Cemar Electro Inc. MAXX-1100 Laser Positioning System. Installation and Set-up Manual

Transcription

1 Cemar Electro Inc. MAXX-1100 Laser Positioning System Installation and Set-up Manual Cemar Electro Inc th Avenue Lachine, QC H8T 3J8 Canada Phone: Fax: Toll free:

2 WARNING This manual contains the latest information at the time of publication. Cemar Electro Inc. reserves the right to revise this manual without notice. The MAXX-1100 Moving Laser Patient Positioning System is intended for use only by physicians qualified in diagnostic radiology and radiation therapy and experienced in marking patients utilizing patient positioning lasers or by therapists at the specific direction of such a qualified physician. It is the sole responsibility of the physician to judge whether the use of the MAXX-1100 Moving Laser Patient Positioning System is clinically appropriate. Page 2

3 TABLE OF CONTENTS Section 1: Introduction - Pg.8 Section 2: System Overview - Pg.9 Section 3: Laser Safety Considerations for MAXX-1100 Units - Pg General Safety 3.2 Safety and Functionality 3.3 Safety Labels Required for MAXX-1100 Units 3.4 Technical Specifications 3.5 Protective Eyewear 3.6 Storage Section 4: System Components Pg MAXX-1100 Moving Laser (MML) Laser Line Adjustment Tilt Adjustment Rotation Adjustment 4.2 System Controller Section 5: Treatment Room Preparation Pg General Room Layout 5.2 Moving Laser and Fixed Laser Base Plates 5.3 MML Mounting Options Ceiling Mount Wall Mount Pedestal Mount 5.4 Cable Routing 5.5 Power Requirements Page 3

4 Section 6: Laser Installation Pg Establishing Isocentre Offset Reference Marks 6.2 Finding the Treatment Room Radiographic Centre Using a Scan to Find Radiographic Centre Using Treatment Room Internal Lasers to Find Radiographic Centre Using Physical Measurements to Find Radiographic Centre 6.3 Using the Rotating Laser To Establish the Y Plane To Establish the X Plane To Establish the Z Plane 6.4 Using the Laser Level or Theodolite To Establish the Y Plane To Establish the X Plane To Establish the Z Plane 6.5 Installing Lasers Locating Mounting Hardware Wall and Ceiling Mounting Installation Components and Hardware Pedestal Mounting Installation Components and Hardware Sagittal Mounting Installation Components and Hardware Section 7: System Connection Pg System Cable Connections 7.2 System Power-up System Controller Power-up Page 4

5 Section 8: System Alignment Pg Basic Laser Alignment Concepts Laser Origin Point must be in the Correct Plane Tilt the Laser Plane to the Correct Alignment Y Plane X Plane Z Plane Rotate the Laser Plane to the Correct Alignment Y Plane X Plane Z Plane 8.2 Specific Laser Alignment Procedures Locating the LOP for all MML Fixed Lasers in the Correct Plane Lop Location of MML Using the Rotating Laser Z Plane Y Plane LOP Location of MML Fixed Lasers Using the Laser Level or Theodolite Ceiling-Mounted MML Side MMLs LOP Location for DLL Side Lasers (MML-1 System) Aligning Lasers in the Y Plane Align the Fixed Laser on the Ceiling MML Align Fixed Lasers on the Side MMLs or DLLs Aligning Lasers in the Z Plane MML-3 System MML-1 System Aligning the Laser in the X Plane Final Alignment Verification Page 5

6 Section 9: Remote Control User Guide Pg Powering Up the System Charging Remote Control Powering Up Remote Control Laser Unit Displays 9.2 Remote Control Operation Pan ID Box Laser Operations Icon Remote Control Settings Icon General Use of Remote Control 9.3 Linking and Status Checking Wireless Communication Status Laser Status Indicators Check Status Icon 9.4 Laser Unit Status Laser Status Indicators Laser Operations Icons 9.5 Home/CT Zero Operations Current Zero Box Unit-Axis Selection Current Laser Position Laser Moving Icons CT Zero Function Icons Set CT Zero Point Homing Lasers to CT Zero Changing Zero Settings Zero Settings Icons Switching from CT Zero to Patient Zero Switching from CT Zero/Patient Zero to Reset Zero Switching from Patient Zero/Reset Zero to CT Zero 9.6 Laser Configuration/Adjustment Navigation Icons Unit Selection Icons Power Level Grid Power Function Icons Page 6

7 9.6.3 Laser Speed Adjustment Speed Bar Speed Function Icons 9.7 Laser Line Positioning Navigation Icons Axis Selection Icon Current Laser Position User Input Icons Laser Positioning 9.8 Express Points Operations Navigation Icons Express Points Function Icons Unit Number Icons Position Fields Express Points Main Operations 9.9 Remote Control Settings Revision Number Box Battery Capacity Indication Local Function Icons Low Battery Warning Power Saving Settings LCD-off Timer Setting Sleep Timer Setting Save Changes Icon Wake-up Methods 9.10 Network ID Configuration Password Input Other Icons 9.11 Troubleshooting Appendix A: Warranty Pg-86 Page 7

8 SECTION 1: INTRODUCTION This Installation and User s Guide includes all the information you need to safely and efficiently install, operate and maintain your MAX1100 Laser Alignment System. The Treatment Room Moving Laser Patient Positioning System consists of the MAXX-1100 moving laser (MML); the MML is connected to a central system controller. Operators interface with the controller using a remote control. The controller can also be configured for a network interface to the treatment planning system. The purpose of this manual is to provide instructions on the installation and setup of the moving lasers within the treatment room. This manual also includes basic operating instructions for the MAXX-1100 laser, its controller, and its computer software system. This Installation and Set-up Manual pertains to Revision 1.1.3, of the MAXX-1100 laser. Please make sure that your remote control and all the documents have the same revision number. Page 8

9 SECTION 2: SYSTEM OVERVIEW The MAXX-1100 laser system consists of several moveable crosshair lasers, a handheld remote control, and a PC controller, operated by a comprehensive software system. The lasers within the MAXX-1100 define the planes of the treatment room. Within an appropriately established treatment room, the MAXX-1100 permits the successful preparation and treatment of patients via radiation therapy. The lasers are adjusted to the offset point of the treatment room. Offset points allow medical personnel easy access to the patient for marking purposes. This system allows medical personnel and system operators to directly identify tumour locations and mark patients for treatment. Note: Use of the MAXX-1100 laser system other than its intended use is carried out entirely at the user's risk. Page 9

10 SECTION 3: LASER SAFETY CONSIDERATIONS 3.1 GENERAL SAFETY To help ensure safe operation of your MAXX-1100 system, please read this section carefully and follow the instructions and procedures in this manual before installing and operating the units. At all times during installation, operation, or adjustment of a MAXX-1100 unit avoid staring into the beams or other sources of bright light emanating from the unit. The MAXX-1100 is a class ll 1mW laser. The American National Standards Institute (ANSI) notes that Class 2 lasers are CW and repetitively pulsed lasers with wavelengths between 0.4 µm and 0.7 µm that can emit energy in excess of the Class 1 AEL, but do not exceed the Class 1 AEL for an emission duration less than 0.25 seconds and have an average radiant power of 1mW or less. Should adjustment or alignment be necessary at any time once the laser is activated the patient s eyes should be protected. 3.2 SAFETY, FUNCTIONALITY and MAINTENANCE For accuracy integrity, Isocentre of diagnostic and treatment equipment must match the Isocentre of alignment lasers. All positioning equipment in the treatment room should be measured at least twice: once upon initial installation and once before service to ensure that construction materials in the walls, floor, and ceiling have settled into position. Realign lasers to Isocentre before use, if they have moved. Testing the alignment of lasers to Isocentre of diagnostic or treatment equipment is based on hospital procedures. The MAXX-1100 is a class ll 1mW laser. Replace laser diode only with assembly provided by Cemar Electro Inc. to ensure that laser power levels do not exceed class ll 1mW limits. The Maxx-1100 unit is virtually maintenance free requiring only visual inspection and cleaning of the encoder glass annually (with a dry lint free cloth) the exterior can be cleaned with a damp cloth. Page 10

11 3.3 SAFETY LABELS FOR MAXX-1100 UNITS The labels on all MAXX-1100 units are required for compliance with federal regulations. Do not remove these labels. Safety labels are located on the laser unit: Figure 3.1 Safety label. Figure 3.2 Class II laser product label. Page 11

12 3.4 TECHNICAL SPECIFICATIONS Specifications for MAXX-1100 used in treatment rooms are as follows: Technical Specifications for Treatment Room Category Feature Specification Laser control Number of axes 4 Electrical Remote X axis: Horizontal movement Y axis: Vertical movement Z-axis: X axis line Roll axis: Horizontal rotation Micro-step Course Accuracy Power supply Fuse Charging Base 600 mm total travel +/- 25 mm 600mm from encoder zero 1mm = 25 steps; degrees 0.2 mm Continuous movement 0.1 mm V AC, 2.0A, 50-60Hz 3.0A Slow blow Replaceable fuse Input: V AC, 50-60Hz, 0.8A(Output 5Vdc.8A) MAXX-1100RC Remote Battery (Not serviceable return to Cemar Electro for service or disposal) *Do not attempt to change battery. Do not attempt to charge nonrechargeable Batteries. Rated Capacity Min. 2300mAh Nominal Voltage 3.7V Charging CC CV, Std. <2.4A, 4.20V, 3.0 hrs. Weight 48.0g Temperature Charge: 0 to +45 Deg. C Discharge: 20 to +60 Deg. C Storage: <35 Deg. C Mechanical Laser unit dimensions Length: mm (63 in) Weight Width: mm (4.5 in) Height: mm (4 in) 16.8 kg (37 lbs.) Environmental Operating temperature 5 C - 35 C (40-95 F) Operating humidity Others Cleaning Instructions 0% - 85 % relative humidity Ensure no dew or condensation IP20 No flammable anaesthetics No corrosives, (no ammonia); use a soft lint free cloth to wipe down encoder annually or when errors occur and a moist cloth for the unit. Page 12

13 3.5 PROTECTIVE EYEWEAR Protective eyewear is not necessary for typical applications where direct papillary impingement by the beams is a random momentary event. Under typical conditions requiring more protracted ocular exposure, protective eyewear or other protective measures may be required. Consult the user standards of the ANSI for further guidance ( 3.6 STORAGE To ensure optimal functionality of the MAXX-1100 unit, ensure the following: Do not drop Store all components in a non-corrosive environment Maintain storage temperature between -20 C and +75 C (-4 F and 167 F) Maintain storage humidity between 20% and 85% relative humidity. Do not permit dew condensation Page 13

14 SECTION 4: SYSTEM COMPONENTS The overview of the system configuration for the MAXX-1100 is shown in Figure 4.1. The configuration table should be completed at the time of purchase. Before beginning installation of the laser system, verify that all components shown on the system configuration chart have been provided. If any required system components are missing, please contact Cemar Electro Inc. immediately for assistance. A description of the major system components in a moving laser patient positioning system is given in the following paragraphs. Figure 4.1 shows the typical system components. Figure 4.1. System components. Page 14

15 4.1 MAXX-1100 MOVING LASER The MAXX-1100 moving laser (MML) is the system component that produces and positions the laser lines. Each MML generates a pair of orthogonal laser lines, one parallel to the long axis of the actuator, and one perpendicular to the long axis of the actuator. Moving laser: The line perpendicular to the axis of the actuator is generated by a diode that can be moved along the axis of the actuator. Fixed laser: The line parallel to the axis of the actuator is generated by a laser diode that is fixed in position at one end of the actuator LASER LINE ADJUSTMENT Proper alignment of the laser lines requires precise adjustment of the laser lines within the confines of the treatment room. Two adjustments are possible for each laser diode, namely, tilt adjustment and rotation adjustment, detailed below TILT ADJUSTMENT Tilt adjustment allows the laser line to pivot from top to bottom, adjusting the positioning relative to the base of the actuator, and side to side for the fixed laser ROTATION ADJUSTMENT Rotation adjustment alters the angle between the laser line and the axis of the actuator by the rotation of the laser diode. The rotation adjustment knob rotates the laser diode upon its axis of rotation perpendicular to the axis of the actuator. This knob adjusts the fixed laser line so that it is parallel to the direction of travel of the moving laser. The moving laser line is adjusted perpendicular to the fixed laser line. 4.2 SYSTEM CONTROLLER PC. The system controller (PC) is able to control multiple-axis configurations, allowing the movement of up to three MMLs. All controllers include a Monitor, a router and all necessary cabling. Page 15

16 4.2.1 CONTROLLER CONNECTIONS The system controller has a multiple output router; this is used to communicate with each MML which are connected to the router with a Cat6 cable. Page 16

17 SECTION 5: TREATMENT ROOM PREPARATION Correct treatment room set-up is crucial to the successful installation of a patient positioning system. Preparation work on the treatment room should be completed before the system components are shipped to the installation site. Necessary preparation work comprises: Establishing where various system components will be located within the room Determining the mounting configuration for each laser unit Providing an adequate structure to mount all of the laser units in the system Determining routings for cables Establishing necessary power for the system In the case where the treatment room is not yet constructed, Cemar Electro Inc. recommends that a rigid steel support frame for the moving lasers is incorporated into the room construction. 5.1 GENERAL ROOM LAYOUT The treatment room must meet the following specifications to permit for installation of the MAXX-1100 unit. Treatment Room Specifications Category Feature Specification Electrical Power supply V AC, 0.25A, 50-60Hz Mechanical Laser unit dimensions Length: mm (63 in) Width: mm (4.5 in) Height: mm (4 in) Weight 16.8 kg (37 lbs) Environmental Room size 10 by 16 by 7.5 Operating temperature Operating humidity Others 5 C - 35 C (40-95 F) 10% - 85 % relative humidity Ensure no dew or condensation No flammable anaesthetics No corrosives Room layout begins by identifying the location of the point in the room that will be the isocenter for the patient positioning system (Figure 5.1). Page 17

18 Note: The radiographic centre point of the room is not the same as the isocenter of the laser positioning system. Both the radiographic centre and the isocenter typically have the same X and Z coordinate, their Y coordinates differ. In this manual, the isocenter will always be referred to as such. Figure 5.1. Isocentre position. Once the isocenter location has been determined, the installation location of the system lasers can be determined. The X actuator should ideally be mounted directly over the isocenter point, using a ceiling mount configuration. This permits the X line to be view at consistent intensities. The Y actuator should be aligned in the X plane in the room, co-planar with the fixed lasers from the two Z lasers. The Z actuators (of which there are two) should be located on either side of the treatment couch, aligned perpendicularly to the long side of the couch. Page 18

19 5.2 MOVING LASER AND FIXED LASER BASE PLATES Steel or aluminum base plates must be installed in the walls and ceiling where laser units are to be mounted. The location, size, and stability of these base plates are critical to a satisfactory installation of a moving laser system. 5.3 MML MOUNTING OPTIONS Two mounting options are available for the X actuator in the system (Figure 5.2). Option 1. The preferred option is a ceiling mount directly over the treatment table. This allows the fixed laser in the X actuator to be aligned as part of the Y plane in the system. This permits the X line to extend unobstructed over the full length of the patient s body. Option 2. A second option for the X actuator is a Gantry system. In this case, the X actuator is mounted to the tops of the side lasers, but the Lasers are positioned closer to the treatment couch. There are also two mounting options are available for the Z actuators in the system. Option 1. If the walls of the treatment room are parallel to the treatment couch, the actuators can be mounted directly to the walls. Option 2. If the treatment couch is not parallel to the walls of the treatment room, a Floor mount should be used for the Z1 and Z2 actuators. The laser lines are focused to a distance of 2 to 3 meters from the actuator. If the Z actuators must be mounted at an angle relative to the wall, or at a distance closer to the treatment couch than the wall, a pedestal mount should be used. Finally, consider mounting the Z actuators on or as close to the walls as possible; this avoids possible interference with treatment room personnel. Page 19

20 Figure 5.2. Mounting and fitting bracket CEILING MOUNT The ceiling mount arrangement is shown in Figure 4.1. Ceiling mount plate dimensions and locations of mounting holes relative to the actuator centre of travel are shown in Figure 5.2. The ceiling must feature a rigid structure within its construction. Typically, this rigid structure is a metal plate built into or affixed on the ceiling. It is to this plate that the ceiling mount installation will be done. Page 20

21 5.3.2 WALL MOUNT The wall mount arrangement is shown in Figure 5.2. For a wall mounting, a mount plate is affixed to each wall. As with the ceiling, the walls must feature a rigid structure within their construction. Typically, this rigid structure is a metal plate built into or affixed to the wall to which these two mount plates can be attached. This rigid structure is required because any movement of the mounting structure for the actuator will result in movement of the laser lines PEDESTAL MOUNT The MML of the MAXX-1100 unit is contained within the body of the unit. An MML can be mounted to the floor in a vertical configuration using a pedestal mount. The pedestal mount arrangement in Figure 5.2. In the case of the MML, the centre line of the pedestal and the centre line of the laser lines are identical. 5.4 CABLE ROUTING Each actuator in the system must be connected to the computer controller by an Ethernet cable. Cables are provided at specified lengths. Provisions should be made in the treatment room to route these cables as directly as possible to the system controller while not posing any hazard to personnel working in the room. Actuator cables may also be routed through conduit. If this is done, the conduit should be of a minimum inside diameter and any bends should be a large and gradual enough to allow the cable connectors to be pulled through the conduit without undue stress. 5.5 POWER REQUIREMENTS For the MAXX-1100 system, four separate power outlets are required for installation: One for the system controller PC, and one for each of the laser units. If treatment room configuration allows, it may be desirable to install a single switch to control all three outlets to the Lasers. The system controller PC requires V AC 8/4 A, 50-60Hz power. Each MML requires VAC 1 A,50-60Hz. The MML s have a power on/off switch. If the controller is to be located where this switch is not accessible, the power to the controller should be switched, allowing power to be easily turned on and off. Detachable mains supply cords are provided, use of other detachable mains supply cord must meet adequate ratings, (see technical Specification table). Page 21

22 SECTION 6: LASER INSTALLATION Before the MMLs or fixed laser can be correctly installed in the treatment room, the system isocenter must first be identified. Once identified, appropriate reference marks should be placed on the wall to determine the precise location of the mounting, as well as aid in the alignment of the laser lines once the lasers have been installed. Accurate positioning is crucial; failure in installation can result in inaccurate laser readings. Please contact Cemar Electro Inc. if you wish to coordinate installation by one of our professionals. 6.1 ESTABLISHING ISOCENTRE REFERENCE MARKS The primary task in system installation is establishing reference marks for each of the three planes for the moving laser system. Ideally, the X and Z coordinates of the laser system centre will correspond with the radiographic zero of the treatment room. Some distance from the centre of the radiographic scan plane will offset the Y-axis of the laser system. This offset distance typically is set in the range of 500 mm to 600 mm, usually a convenient round value (i.e., 550 mm). The distance must be large enough so that no part of the laser line in the Y plane is blocked by a part of the MAXX-1100 system, and to allow the technicians access to mark the patient at the intersection of the laser lines. Note: If the offset distance is too large, it may limit the length of the patient that can be scanned after the patient has been set up to the moving laser system lines. 6.2 FINDING THE TREATMENT ROOM RADIOGRAPHIC CENTRE Three options are possible for determining the treatment room radiographic centre; options are listed in order of preference: 1. Using a scan to find the radiographic centre 2. Using treatment room internal lasers to find the radiographic centre 3. Using physical measurement to find the radiographic centre These options are outlined in the following sections. Page 22

23 6.2.1 USING A SCAN TO FIND RADIOGRAPHIC CENTRE Scanning a phantom is the most accurate way to determine radiographic centre of the MAXX-1100 system. A phantom is an object of human form specially designed for use in the field of medical imaging; the phantom serves as a test subject upon which to evaluate, analyze, and tune the performance of various imaging devices. Using a scan to find the radiographic centre can be executed as follows: Step 1. Set the installation phantom on its base plate on the treatment room couch. Step 2. Make sure that the base plate is level in both directions. Step 3. Orient the phantom so that its centre plane is aligned with the internal lasers in the MML. Step 4. Scan the phantom, using the minimum slice thickness available. Begin the scan at approximately 5 mm above (superior to) the centre of the phantom, and ending approximately 5 mm below (inferior to) the centre of the phantom. This ensures that the centre plane of the phantom is included in one of the scan planes. Step 5. Find the slice that corresponds to the centre of the phantom. The centre is distinguishable as the only slice where the two 1 mm holes are visible in the top surface of the phantom. Step 6. If both 1 mm holes are not visible in the same slice, then the phantom has not been oriented perpendicular to the scan plane. Adjust the position of the phantom and repeat the scan process until both 1 mm holes can be seen in the same scan plane. This indicates correct alignment of the phantom relative to the scan plane. Step 7. Identify the position of the centre slice as the radiographic zero in the Y direction. Step 8. Once the correct centre slice has been established, select a nearby slice where the grooves on the sides and top of the phantom are visible. Place a grid on the scanned image, with the origin of the grid at the radiographic centre of the scan. Step 9. Compare the grid with the centres of the grooves on the sides and the top of the phantom. Step 10. Adjust the phantom position up or down (using couch motion) and/or side to side (by manually sliding the phantom base plate) and repeat the scan until the grid indicating radiographic centre indicates that the phantom is aligned in both the X and Z directions with the centre of the radiographic scan. Page 23

24 Figure 6.1. Phantom overview. Note: When moving the phantom side to side, be careful not to change the angle of the phantom, or else the steps to align the phantom with the scan plan will need to be repeated. While performing the above scan procedures, the grooves on the sides of the phantom may not line up with the grid on the scan image (i.e., the image of the phantom is rotated relative to the grid). If this occurs, verify that the phantom is level. If the phantom is level, and the image of the phantom is still rotated relative to the grid, then the MML does not indicate the horizontal plane correctly. If this error is more than 1 degree, contact Cemar Electro Inc. for follow up. The patient positioning lasers should be installed in a correct horizontal orientation, consistent with the patient positioning lasers that are installed in the treatment room. If the image in the CT simulator is not oriented correctly with respect to the horizontal plane, it will be difficult or impossible to correctly mark and position the patient for treatment. Page 24

25 6.2.2 USING TREATMENT ROOM INTERNAL LASERS TO FIND RADIOGRAPHIC CENTRE There may be instances where it is not possible to use a scan to establish the radiographic centre, for example, if the MML system does not have the capability to place a grid at the radiographic centre. Should it not be possible to use a scan to establish the radiographic centre, the next best option is to use the treatment room internal lasers for this purpose. It is important to be aware that the internal lasers may or may not be correctly aligned with radiographic centre. There is no way to determine alignment without a scan. In this case, simply move the installation phantom until the internal lasers line up with the external grooves on the sides and top of the phantom. This alignment will correspond with the centre of the phantom and thus establish the radiographic centre USING PHYSICAL MEASUREMENTS TO FIND RADIOGRAPHIC CENTRE The last and least preferable method of finding the radiographic centre is to use physical measurements of the treatment in order to determine the location of the centre. In instances where one or more of the internal lasers is not working, or the internal laser is obviously not aligned correctly, the installer must assume that the radiographic centre of the scan corresponds to the physical centre of the opening in the MML. Measurements to the edges of the opening in the MML can be used to locate the installation phantom as close to the centre of the treatment room as possible. Note: The alignment of the MML laser system centre with the radiographic centre is not necessary from the point of view of patient setup and marking. In the typical setup procedure, before the patient is scanned, markers are placed on the patient s skin at the intersection of the laser lines from the MML system. In the process of finding the zero point from which the new isocentre for treatment will be located, the markers placed on the patient prior to the scan are used to indicate the zero position of the MML lasers. Offset values for new laser line positions for marking the new isocenter on the patient are measured relative to this zero position. When the patient is set up to be re-marked, they are aligned so that the three markers that were placed on their skin prior to scanning are again aligned with the intersection of the laser lines from the MML system. Offsets for the new laser line position are moved from this zero position. Finally, the isocenter position and laser line movements are both calculated relative to the skin markers, and any differences between the radiographic centre and the MML system centre are compensated for with this method. Although establishing the same centre point for the MML system and the radiographic centre of the room is not required, it is important that the three markers placed on the patients skin prior to scanning are visible in the same single slice of the patient scan. This allows an accurate zero position scan plane to be determined for the patient. In order for this to be accomplished, the MML laser system needs to be set so that the Y plane of the MML lasers is parallel to the scan plane. This can be accomplished by aligning the installation Page 25

26 phantom with the scan plane (Section 6.2.1), and then aligning the MML laser system to the installation phantom as described in the paragraphs below. If markers are not used to specify the intersection of the laser lines on the patient s skin, then the procedure for determining the location of the laser zero position in the patient scan will vary slightly from that described above. Options are thus as follow: Option 1. Place visible marks on the patient s skin that correspond with the MML laser lines. The patient would then be aligned below the MML so that the internal lasers on the apparatus line up with these visible marks. In this case, the internal lasers on the MML must be aligned correctly to correspond with the radiographic centre or some other known point on the scan. Option 2. Alternatively, the patient could simply be aligned with the MML laser lines, and then moved the known offset distance from the MML system to the radiographic scan plane. This new position is then assumed to be the zero position of the laser lines in the scan. This technique requires that the MML laser lines be aligned precisely with the radiographic centre of the treatment room. Ensure that the treatment room couch is firm and solid; any couch sag will result in errors in the laser offset positions that are ultimately calculated. Quality control and verification of laser movement is simplified if the treatment room radiographic centre and the MML system centre are aligned with each other, and the offset between the scan plane and the laser system zero is a round number. 6.3 USING THE ROTATING LASER A rotating laser can be used to establish the Y, Z, and X planes for the MML system based on the scan of the installation phantom. The steps to establish reference marks for this plane using the rotating laser are detailed in the following sections TO ESTABLISH THE Y PLANE The steps to establish the Y plane for the MML system using a rotating laser are as follows: Step 1. Orient the installation phantom correctly at the centre of the treatment room radiographic centre, and align with the scan plane. Remove the installation phantom from its base plate, being very careful not to change the position of the base plate. Replace the installation phantom with the rotating laser. Place the rotating laser on the base plate with its centre pointer set in the indentation between the centering pins for the installation phantom. This places the centre of the rotating laser at the same point as the centre of the installation phantom. Page 26

27 Step 2. Pivot the rotating laser about the centre pointer until the plane of the rotating laser is parallel with the scan plane. This can be verified by comparing the position of the rotating laser beam with the internal rotating laser beam of the MML or with the marks on the base plate. This can also be accomplished by using a base plate with specially machined indentation marks for each of the three feet of the rotating laser, where these indentation marks assure that the rotating laser is parallel to the mounting pins for the installation phantom, and also parallel to the scan plane of the MML. Step 3. Move the rotating laser out to the correct offset distance for the Y, Z, or X plane of the MML system. With the rotating laser set at the scan plane for the MML, set the couch position longitudinal indicator to zero. Without changing the couch vertical position, move the couch out the required offset distance (e.g., 500 mm, 550 mm, or 600 mm). Step 4. Use the rotating laser to mark the plane in question for the MML system. Make a minimum of two marks on the floor, the ceiling and on each of the two walls. Step 5. Mark the wall behind the CT where the pointer out of the end of the rotating laser hits the wall TO ESTABLISH THE X PLANE Begin with the installation phantom base plate located as it was to set up the Y plane, and the centre pointer of the rotating laser located in the indentation between the phantomcentering pins on the base plate. The steps to establish the X plane for the MML system using a rotating laser are as follows: Step 1. Rotate the base of the rotating laser 90 degrees about the centre pointer until the laser pointers at the two ends of the rotating laser coincide with the marks on both walls for the Y plane. Step 2. Verify that the rotating laser is level. Step 3. Use the rotating laser line to make a minimum of two marks on the ceiling in the X plane. Step 4. Use a plumb bob to transfer these marks on the ceiling to corresponding marks on the floor TO ESTABLISH THE Z PLANE The Z plane for the MML system must be level, and if possible, at the same height as the centre of the radiographic scan. The steps to establish the Z plane for the MML system using a rotating laser are as follows: Step 1. Set up the rotating laser so that the rotating laser is situated in the horizontal plane. Ensure that the rotating laser is sitting level on the base plate. Page 27

28 Step 2. Adjust the table height up or down until the rotating laser corresponds with the mark that was made on the wall behind the MML when the rotating laser was first set up to coincide with the radiographic centre. Alternatively, the height of the rotating laser could be set to coincide with the height of the internal side lasers on the MML. Step 3. Use the rotating laser to make at least two marks on each of the two side walls that define the Z plane. These marks should be far enough apart to allow the rotation angle of the MML lasers to be adjusted accurately. 6.4 USING THE LASER LEVEL OR THEODOLITE The Y, X, and Z planes can also be established using a laser level, otherwise known as a theodolite. A theodolite is a surveying instrument with a rotating telescope for measuring horizontal and vertical angles. A theodolite provides five orthogonal laser beams to help locate perpendicular and parallel planes TO ESTABLISH THE Y PLANE The steps to establish the Y plane for the MML system using a theodolite are as follows: Step 1. Orient the installation phantom correctly at the centre of the treatment room radiographic centre, and align with the scan plane. Remove the installation phantom from its base plate, being very careful not to change the position of the base plate. Replace the installation phantom with the theodolite. This places the centre of the rotating laser at the same point as the centre of the installation phantom. Pivot the theodolite about the centre pointer until the two side beams from the theodolite are aligned with the internal rotating laser beam on the MML on both sides of the MML opening. The side beams of the theodolite should now be parallel to the scan plane. Step 2. Move the theodolite out to the correct offset distance for the Y plane of the MML system. With the theodolite set at the scan plane, set the couch position longitudinal indicator to zero. Without changing the couch vertical position, move the couch to achieve the required offset distance (e.g., 500 mm, 550 mm, or 600 mm). Step 3. Use the pointers from the theodolite to mark the walls, floor, and ceiling. Make a mark on the ceiling, floor, and each of three walls (two sides and the wall behind the MML) where the theodolite pointers hit the surface. Step 4. Add additional marks to the side walls, floor, and ceiling. Using a plumb bob, suspended so that one of the theodolite beams intersects the plumb bob string, make two additional marks on the floor, the ceiling and on both of the side walls. All three surfaces (floor, ceiling, and two side walls) should now have three marks each, defining a line on that surface that is the intersection of the Y plane with that surface. Page 28

29 6.4.2 TO ESTABLISH THE X PLANE To establish the X plane for the MML system, begin with the installation of the phantom base plate as done for the Y plane, with the theodolite centered over the indentation on the base plate. The steps to establish the X plane using a theodolite are as follows: Step 1. Mark the ceiling at the point indicated by the vertical pointer on the theodolite. Step 2. Slide the theodolite about 25 cm along the line marked on the installation phantom base plate. Ensure the bottom pointer on the theodolite is pointing at this line. Step 3. When the theodolite has been moved about 25 cm along this line, mark a new point on the ceiling. Step 4. Move the theodolite to the end of the base plate nearest the head of the couch. Step 5. Move the base plate towards the head of the couch until the bottom pointer on the theodolite can be seen on the floor. Step 6. Move the couch and the theodolite until the vertical pointer again coincides with the point on the ceiling that is in the Y plane. Step 7. Make a mark on the floor where the bottom pointer on the theodolite indicates. This point should be in both the X and Y planes. If it is not, continue adjusting the theodolite until this is the case TO ESTABLISH THE Z PLANE The Z plane for the MML system must be level, and if possible, at the same height as the centre of the radiographic scan. The steps to establish the Z plane using a theodolite are as follows: Step 1. Set the theodolite on the base plate so that it corresponds approximately with the Y plane that has previously been established. Step 2. Adjust the table height up or down until the height of the horizontal pointers correspond with the height of the internal side lasers on the MML. The theodolite can be pivoted on its base so that one of the horizontal pointers points at the MML internal side laser or at the line it generates at the centre of the MML. Step 3. Once the horizontal pointers on the theodolite are at the correct height, rotate the base of the theodolite to move the horizontal pointers to different locations on the side walls. Make a minimum of two marks on each side wall to indicate the intersection of the Z plane with that wall. Make the marks far enough apart so that the rotation angle of the beam from the far wall can easily be judged and adjusted to the marks. Page 29

30 6.5 INSTALLING LASERS Once the room has been marked with appropriate reference marks, the various lasers (fixed and/or moving) can be mounted in the room. Z1 and Z2 lasers can be installed using either a wall mount or a pedestal mount. The X actuator can be installed using either a ceiling mount or a sagittal mount. Note: If the walls are not parallel to the CT table motion, an angled-bracket mount, similar to the sagittal mount for the moving laser, can be used for the Z1 and Z2 lasers instead of a Floor mount. In the following sections on laser installation, it is assumed that a mounting base plate has already been installed in the correct location to mount the lasers. The process of mounting the lasers can be divided into two steps; correctly locating the mounting hardware, and mounting the laser. The process for each of these steps depends on how that laser will be mounted LOCATING THE MOUNTING HARDWARE A paper template is provided with each MML. This template situates the centre of the lasers for the MML unit relative to the mounting holes on the laser mount plate. In all cases the objective is for the laser origin to be placed in the correct MML reference plane (i.e., X, Y, or Z) WALL AND CEILING MOUNTING The MML can be mounted to either the wall or ceiling if structural criteria are met. If the laser will be mounted directly to a base plate on the wall or ceiling, the process of locating the mounting hardware is straightforward: Draw perpendicular lines through the point on the template that corresponds with the centre of the lasers. Tape this template on the base plate so that the lines corresponding with the centre of the lasers are aligned with the X, Y, and/or Z plane marks that were established using the rotating laser (Section 6.3) or the theodolite (Section 6.4) INSTALLATION COMPONENTS AND HARDWARE Moving laser actuators are mounted to a vertical wall using two wall-mount plates. Both plates are mounted to the wall using identical four-hole patterns for 6mm flat head machine screws. The hole pattern for these mount plates and their location relative to the centre of travel of the actuator is shown in the included templates. Carefully align the two hole patterns perpendicular to the actuator mounting line and parallel to each other. Page 30

31 To install a laser in a wall or ceiling mounting: Step 1. Position the MML so that the fixed laser is aligned exactly in the Y plane. Typically, the cover is left off until final laser alignment is complete. Once final laser alignment is complete, reinstall the cover. Step 2. In the case of ceiling-mounted MML s alignment planes must be carefully considered FLOOR MOUNTING For Floor mounts, the mounting template used for wall or ceiling mounting cannot be used. In order for the laser centre to be located in the MML s Y reference plane, the base of the pedestal must be mounted in the correct location. The floor template can be used to position the MML s in the correct reference plane. The base of the MML can be marked with one line through the centre corresponding to the center of the template. Align the template on the floor so that the line corresponding to the centre of the laser that will be mounted to the floor corresponds with the line determined by the two marks made on the floor to define the MML Y reference plane INSTALLATION COMPONENTS AND HARDWARE Floor mounting allows lasers to be mounted vertically, but attached to the floor. This configuration is advantageous in allowing the user to easily orient the actuator at any angle with respect to the room. This is particularly convenient in treatment rooms where the couch is installed at some angle other than 90 degrees relative to the walls of the room. Installation of a Floor-mount MML requires four studs to be installed in the floor. Care should be taken to align the pedestal base hole pattern with the desired location of the Y line in the room, and at an angle so that the laser points correctly towards the zero reference point for the laser system. The holes in the base plate of the pedestal are oversized to allow for some adjustment of both angle and the lateral position. Before the base plate is secured tightly to the floor, shim under the base plate as required to make the pedestal vertical. Page 31

32 6.5.4 MOUNTING For angle-bracket mounting, the laser(s) must be placed in the correct MML reference plane. This positioning should be established as follows: Step 1. Step 2. Step 3. Step 4. Step 5. Step 6. Step 7. Assemble the angle bracket and mount the laser to the angle bracket. Adjust the angle bracket so that the plate that mounts to the base plate is parallel to the base plate on the wall or ceiling. Adjust the angle bracket so that the side of the laser housing is parallel to the MML reference plane of interest. Tighten the angle bracket in this position. Hold the angle bracket (with laser attached at the correct angle) against the base plate and move the unit until the centre of the laser is coincident with the MML reference plane of interest. To verify that the centre of the laser is in the correct plane, use another laser unit, or any line-generating device, to project a plane that corresponds with the MML reference plane of interest. This projected line will intersect the reference marks placed on the wall behind the laser being installed, as well as at least one other reference point in the same plane. This second point cannot be on the same wall. When the unit is held in the correct position as indicated above, mark the position of the angle bracket INSTALLATION COMPONENTS AND HARDWARE A ceiling mount plate is required; this plate must be installed so that its long axis is parallel to the Y line in the system. This Y plane cannot be in the same plane as the long axis of the two Z actuators. The ceiling mount plate includes two pivoting angle mounts attached to the face of the ceiling mount plate. A bolt tightens the joint of each of these pivoting angle mounts. To install a laser in a mounting: Step 1. Step 2. Step 3. Step 4. Step 5. Mount them to the actuator adapter of the pivot mount assembly. Attach the ceiling adapter side of the pivot mount assemblies to the ceiling mount plate. Mount the ceiling plate to the base plate in the location marked in the Mounting procedure (Section 6.5.4). This is done by drilling and tapping four M6x20 or ¼-20 holes in the base plate to correspond with the counter-sunk holes along the edges of the ceiling plate. Place two washers over the fixed stud and install the MML over two studs. Secure the moving laser with the studs centered in the mounting slots as in the wall or ceiling mount. Once the actuator is secured to the mount plates, loosen the two hex head bolts in the pivot point of the angle mounts. The actuator can now be rotated freely about these pivots, moving the midpoint Page 32

33 Step 6. Step 7. of the X line generated by this laser up and down along the length of the treatment room couch. Rotate the MML until the midpoint of this X line is approximately in the centre of the treatment room couch, and the ends of the X line extend to each end of the couch. Tighten the two hex head bolts in the angle mounts to secure the MML at the desired mounting angle. This final angle adjustment is most easily made after the system has been connected and the lasers are turned on. See Section 7 for system connection procedures. Page 33

34 SECTION 7: SYSTEM CONNECTION 7.1 SYSTEM CABLE CONNECTIONS Final alignment of the three actuators necessitates the following system connections be made, the laser lines be powered on, and their position appropriately situated. The system cable connections can be seen in Figure 7.1. Before you can complete final alignment of the three actuators, the power cord must be connect to the power connection on the controller; this must be complete before the laser lines can be turned on and their position controlled. These connections can be seen in Figure 7.1. Figure 7.1. System connection. 7.2 SYSTEM POWER-UP The system is now ready to have power turned on. Automatic power-up procedures are executed any time power is applied to the system. Power-up operations for the system controller and for the remote control are outlined below. Note: Before applying power to the system, remove the actuator covers from each actuator and confirm that the strapping tape that secures the beam steering platforms during shipment has also been removed. Page 34

35 7.2.1 SYSTEM CONTROLLER POWER-UP The system controller provides control to the entire MAXX-1100 system. Power is applied by turning on the power switch on the control enclosure; the computer then run the Maxx-1100 control software. Page 35

36 SECTION 8: SYSTEM ALIGNMENT 8.1 BASIC LASER ALIGNMENT CONCEPTS The following basic principles apply to alignment of laser lines independent of the model or application. For each individual laser diode, the following steps must be followed in sequence LASER ORIGIN POINT MUST BE IN THE CORRECT PLANE The Laser Origin Point (LOP) is the point where the laser line exits the line-generating optics on the laser diode. This is typically a point at the end of the laser diode, in the centre of the laser diode barrel. If more than one laser diode defines a particular plane (e.g., the Y plane of a MML moving laser system), then the LOP for each of the lasers must lie in that plane before other alignment adjustments can be made effectively TILT THE LASER PLANE TO THE CORRECT ALIGNMENT The tilt adjustment for each laser allows the laser diode barrel to be tilted about the LOP. The LOP does not change position as a result of this adjustment. The requirements for this adjustment are slightly different for each plane in the system. Tilt adjustment cannot be made correctly until the LOP has been located accurately in the correct plane Y PLANE Lasers that form the Y plane in the MML system (e.g., the fixed lasers on the two actuators mounted on either side of the treatment room couch) must be tilted to be co-planar. This can be accomplished by using the tilt control on the fixed laser to move the laser line until it passes through the LOP of the laser on the opposite wall. Note: If the rotation adjustment of the two opposing lasers is not correct, then the tilt adjustment described above may not be correct. Therefore, in the case of the Y plane, it may be more efficient to adjust rotation before tilt is adjusted X PLANE The X plane is a vertical plane. The moving laser on the ceiling laser actuator defines the X plane. The tilt control for this laser is used to adjust the X plane so that it is perfectly vertical (plumb). Page 36

37 Z PLANE The Z plane is a horizontal plane. The two lasers (e.g., the moving lasers on the two actuators mounted on either side of the treatment room couch) must be in the same horizontal plane (i.e., level across the room). If the two opposing lasers have been correctly located with their LOP in the Z plane, then the tilt control can be used to move the projected laser line until it passes through the origin of the opposing laser ROTATE THE LASER PLANE TO THE CORRECT ALIGNMENT When the first two adjustments have been made correctly, rotation of the laser plane should be the final required adjustment. This adjustment consists of rotating the laser diode barrel about its long axis, effectively rotating a line generated by a perpendicular intersecting plane about the centre point of the line. In the case of the Y plane, laser alignment is most effectively accomplished if rotation adjustment of the side lasers precedes the tilt adjustment of these lasers. Again, the requirements for this adjustment are slightly different for each plane of the system, as described in the following sections Y PLANE In the case of the two lasers on either side of the room that help define the Y plane, the laser lines must be rotated so that the lines are vertical (plumb). In the case of the laser in the ceiling actuator that helps define the Y plane, the line must be rotated until it is parallel with the Y plane defined in the room X PLANE Rotation of the X line (generated by the moving laser on the ceiling actuator) allows it to be made perpendicular to the Y plane Z PLANE The rotation adjustment for the two lasers that define the Z plane for the MML system allow these lines to be adjusted so that the line that is generated on the opposite wall is horizontal (level) from end to end, in the direction perpendicular to the long axis of the laser diode. 8.2 SPECIFIC LASER ALIGNMENT PROCEDURES Once power to the lasers has been established (see Section 7 for more details on system and power connections) and the MMLs positioned in the zero position, final system alignment can take place as follows: Page 37

38 Step 1. Locate each laser actuator or fixed laser in the system so that the LOP for each laser is accurately located in the correct plane. Step 2. Use tilt and rotation controls to align laser lines so that the vertical and horizontal lines are aligned with their respective counterpart. Step 3. Adjust the zero position of the moving laser on each actuator so that the moving laser zero corresponds with the MML system zero and that the Z1 and Z2 actuators are aligned at the same zero position LOCATING THE LOP FOR ALL MML FIXED LASERS IN THE CORRECT PLANE The purpose of this task is to physically move the actuators so that the origin of each laser is in the correct plane. Once the origins of all of the lasers are correctly positioned, the rotation and tilt of each laser can be adjusted so that all of the laser lines in the room fall within the correct plane. Note: This task must be accurately completed accurately, otherwise subsequent adjustment(s) cannot be made correctly. The procedures for this task vary depending on the equipment that is being used to align the MML system LOP LOCATION OF MMLs USING THE ROTATING LASER The primary purpose of the rotating laser in this procedure is to locate the fixed lasers on the laser actuators in the correct Y plane. If the installation includes pedestal-mounted MMLs, the rotating laser can also be used to determine the height at which these side lasers should be located Z PLANE If there are pedestal-mounted lasers in the system (Section 6.5.3), the first step is to position the actuators in correct vertical position. This can be done using the rotating laser, set in a horizontal orientation on the treatment room couch. The couch is moved up or down until the rotating laser light passes through all four of the marks that were made on the side wall to define the Z plane in the room (Section 6.5.3). The vertical position of the Z actuators can then be adjusted so that the rotating laser passes through the origin of the moving laser when it is positioned at the centre of travel. A pedestal installation fixture can be used to ensure that the Z actuators remain at this correct height when making subsequent rotational adjustments. Page 38

39 Y PLANE The rotating laser can be used to locate the LOP for the fixed lasers on the MMLs that form the Y plane in the MML system. For a MML-1 system, this is the fixed laser from the ceilingmounted MML. For a MML-3 system, this includes the fixed laser from all three MMLs. This is accomplished as follows: Step 1. Set up the rotating laser so that it is rotating in the Y plane. Step 2. Adjust the rotating laser position until the rotating laser passes through all eight marks that were initially made on the floor, ceiling and walls to define the Y plane (Section 6.3.1). Step 3. Reposition laser unit until the rotating laser passes directly through the origin of the fixed laser on the actuator. Note: It is not essential that the rotating laser pass through the origin of moving lasers on the MMLs LOP LOCATION OF MML FIXED LASERS USING THE LASER LEVEL OR THEODOLITE If a theodolite was used to define the location of the MML Y plane, the theodolite cannot be set up a second time to duplicate the original Y plane because the marks on the floor, ceiling and walls that correspond to the initial position of the theodolite are now covered with laser units. A different procedure must therefore be followed to correctly position the MMLs. This procedure is different for a ceiling-mounted MML than for those mounted on the sides of the room CEILING-MOUNTED MML Locate the LOP of the fixed laser on the ceiling-mounted MML should be done as follows: Step 1. Use the rotation control on the MML fixed laser to adjust the line until it is parallel with the two marks on the floor that identify the Y plane. Step 2. Use a plumb bob and the tilt control on the MML fixed laser to adjust the plane of the laser until it is vertical. If the plane is vertical and the plumb bob is held in the laser plane, the laser will simultaneously illuminate the entire length of the plumb bob string. Step 3. When the laser has been positioned and the line from the fixed laser passes through the two marks on the floor, use a plumb bob to recheck that the laser plane is still vertical. If the plane is no longer vertical, repeat the process starting at Step 2. Page 39

40 SIDE MMLS The opposing fixed lasers on the sides of the treatment room couch can be used to correctly locate the opposite laser LOP. The procedure is as follows: Step 1. Use the rotation control for the fixed laser on one MML (e.g., actuator Z1) to make the laser line vertical. This can be done using a plumb bob (as described in Section , Step 2), or by making the line parallel to the marks for the Y plane on the opposite wall. Step 2. Use the tilt control to move the vertical line on top of the two marks for the Y plane on the opposite wall. Step 3. Adjust the position of the opposing laser (e.g., Z2) until the LOP of its fixed laser corresponds with the line that is projected from the other side of the room, and which is aligned with the Y plane marks on the wall to which the MML is mounted. Step 4. When the first MML (Z2 in this example) is positioned correctly, tighten the ¼-20 mounting nuts to approximately 50 in-lbs. Step 5. Repeat Steps 1 through 4 to position the second MML, this time adjusting the line from Z2 over the Y plane marks on the opposite wall. Then use this line as a reference to align the Z1 MML s fixed laser with the Y plane. Step 6. Repeat Steps 1 through 4 to verify that the fixed laser for the Z2 MML is still located correctly in the Y plane. Adjust the position of the Z2 MML if necessary LOP LOCATION FOR DLL SIDE LASERS (MML-1 SYSTEM) The DLL lasers are part of the MML-1 and MML-3 systems. As both lasers in the DLL are fixed lasers and any movement of the DLL housing potentially affects the LOP location for both lasers the procedure to correctly obtain the LOP location for the DLL lasers is different than the procedures described above for MMLs. The LOP for both lasers in the unit must be correctly located at the same time. Fortunately, because the DLLs are always mounted as opposing pairs in a MML-1 system, they can be used to help correctly locate the DLL on the opposite wall. To make this procedure as clear as possible, one DLL will be designated DLL-1 and the other DLL-2. This designation is purely arbitrary, and is made simply for the purpose of distinguishing the two DLLs in the steps that follow: Step 1. Locate both DLL-1 and DLL-2 so that the LOP for all four lasers are approximately aligned with the marks for the Y and Z planes on the wall behind them. Step 2. Turn on both DLLs. Step 3. Use the rotation control for the vertical laser on DLL-1 to make the laser line vertical. This can be done using a plumb bob, or by making the line parallel to the marks for the Y plane on the opposite wall. Step 4. Use the tilt control to move the vertical line on top of the two marks for the Y plane on the opposite wall. Page 40

41 Step 5. Use the rotation control for the horizontal laser for DLL-1 to make the line horizontal. Making the line parallel to the marks for the Z plane on the opposite wall accomplishes this task. Step 6. Use the tilt control to move the horizontal line on top of the two marks for the Z plane on the opposite wall. Step 7. Loosen the mounting nuts on DLL-2, and move it until both laser LOPs are aligned exactly with the corresponding line (horizontal or vertical) projected from DLL-1. Re-tighten the mounting nuts on DLL-2 and verify that the laser LOPs are still correctly aligned. Step 8. Use the rotation control for the vertical laser on DLL-2 to make the laser line vertical. This can be done using a plumb bob, or by making the line parallel to the marks for the Y plane on the opposite wall. Step 9. Use the tilt control to move the vertical line on top of the two marks for the Y plane on the opposite wall. Step 10. Use the rotation control for the horizontal laser for DLL-2 to make the line horizontal. Making the line parallel to the marks for the Z plane on the opposite wall accomplishes this task. Step 11. Use the tilt control to move the horizontal line on top of the two marks for the Z plane on the opposite wall. Step 12. Loosen the mounting nuts on DLL-1, and move it until both laser LOPs are aligned exactly with the corresponding line (horizontal or vertical) projected from DLL-2. Re-tighten the mounting nuts on DLL-1 and verify that the laser LOPs are still correctly aligned ALIGNING LASERS IN THE Y PLANE Aligning lasers in the Y plane is usually the most difficult part of MML system laser alignment because you must align all three fixed lasers in this plane. Again, this can only be accomplished successfully if the LOP for these three lasers has been located correctly in the Y plane, as described in the previous procedures (Section 8.2.1). Once this LOP is correct for all three lasers, use the tilt and rotation controls for the lasers for final alignment ALIGN THE FIXED LASER ON THE CEILING MML Depending on the alignment tools that are being used, some of the steps outlined below may have been completed in previous procedures. Step 1. Use the rotation control on the MML fixed laser to adjust the line until it is parallel with the two marks on the floor that identify the Y plane. Step 2. Use the tilt control on the MML fixed laser to move the line until it passes through both marks on the floor that identify the Y plane. Step 3. Use a plumb bob to verify that the plane of the laser is vertical. If the plane is vertical and the plumb bob is held in the laser plane, the laser will simultaneously illuminate the entire length of the plumb bob string. Page 41

42 Step 4. If the laser line is not vertical, then the LOP of the fixed laser is not located in the same vertical plane as the marks on the floor, and corrective steps must be taken to locate the LOP of this laser correctly (Section 8.2.1) ALIGN FIXED LASERS ON THE SIDE MMLS OR DLLS To align fixed laser on the side MMLs or DLLs, follow the steps below. Note: Some of the steps outlined below may have been completed in previous procedures. Step 1. Use the rotation controls on both of the side-mounted fixed lasers to make both projected lines vertical. This can be done using a plumb bob, or by making the line parallel to the marks for the Y plane on the opposite wall. Step 2. Use the tilt controls for these two opposing lasers to bring the lines directly over both marks on the opposite wall that define the Y plane. At this point, all three fixed lasers that define the Y plane for the MML system should be coplanar throughout the room. This can be confirmed by turning all three lasers on, walking through the room with a piece of white paper, and verifying that when one laser is obstructed at any given time or position in the room, the position of the line on the paper does not change. If this is not the case, revisit the preceding alignment steps to determine which was not carried out correctly or with sufficient accuracy ALIGNING LASERS IN THE Z PLANE Only two lasers are involved in aligning lasers in the Z plane; the process is thus simpler than that required aligning lasers in the Y plane. The same principles do apply. Once the LOP for the two lasers involved is correct, then only rotation and tilt adjustments need be made. In the case of a MML-3 system, the LOP has not yet been located correctly. Since the lasers that make up the Z plane in the MML-3 system are moving lasers, the ability to move these lasers will be used to set the LOP correctly MML-3 SYSTEM Correct laser alignment requires that the laser LOP is first correctly set. The ability to move the Z lasers on the MMLs will be used for this purpose, as follows: Step 1. Begin with both moving lasers at zero (i.e., approximately aligned with the Z plane in the MML system). Step 2. Use the rotation control on the moving laser on the Z2 MML to adjust the line so that it is parallel to the marks defining the Z plane on the opposite wall. Step 3. Use the tilt control on the moving laser for the Z2 MML to move the line so that it passes through both marks on the opposite wall that define the Z plane. Page 42

43 Step 4. Use the Align function on the remote control to move the Z1 moving laser until its LOP corresponds with the Z line projected from the Z2 MML. Use the remote control to set this as the new zero position for the Z1 MML. Step 5. Repeat the process to set the zero position of the Z2 MML so that the LOP of the moving laser is correctly located in the Z plane. Step 6. Adjust the tilt of the repositioned Z2 laser so that the line passes through the marks defining the Z plane on the opposite wall and through the LOP of the Z1 laser. Step 7. Make any minor adjustments to rotation and tilt of the two Z lasers so that the two projected lines pass through the two marks defining the Z plane on the opposite wall, and are co-planar with each other throughout the room. Note: If the two Z lasers are not co-planar throughout the room at this point, you must determine which of the preceding alignment steps was not carried out correctly or carefully enough MML-1 SYSTEM In the case of the MML-1 system, if the steps for locating the LOP for the two DLLs in the system were performed correctly, the Z plane lasers should already be aligned across the room. The process that used the opposing DLL to set the LOP for each laser on the DLL required that rotation and tilt be adjusted correctly as part of the process. If the two lasers that form the Z plane in the MML system are not now co-planar throughout the room, then the process outlined in Section should be reviewed, and repeated as necessary ALIGNING THE LASER IN THE X PLANE In this case, there is only a single laser to align, the moving laser on the ceiling-mounted MML. This process is as follows: Step 1. Use the rotation control to rotate the line until it is parallel to the X plane in the system. This is most easily defined by a line on the installation phantom base plate that is marked perpendicular to the Y plane in the system. Note: This line may not be parallel to the direction of the treatment room couch longitudinal travel, if the couch has not been installed exactly perpendicular to the MML scan plane. Step 2. Use a plumb bob and the tilt control on the MML moving laser to adjust the plane of the laser until it is vertical. If the plane is vertical and the plumb bob is held in the laser plane, the laser will simultaneously illuminate the entire length of the plumb bob string. Page 43

44 8.2.5 FINAL ALIGNMENT VERIFICATION Once all three planes have been aligned, and the appropriate lasers are co-planar throughout the room, the installation phantom should be scanned one more time to verify system alignment. This verification is most easily accomplished if three skin markers (i.e., BB s) are mounted to the installation phantom, one on each side, and one on the top, all in the same Y plane of the installation phantom. Alignment verification would then proceed as follows: Step 1. Set the installation phantom on the base plate on top of the treatment room couch. Step 2. Set all the MML system lasers to zero. Step 3. Align the installation phantom so that the two skin markers on the side are located at the intersection of the Y and Z lines, and the skin marker on the top is located at the intersection of the X and Y lines. Step 4. Without changing the couch height, move the couch in until the skin markers are aligned with the MML scan plane. Step 5. Perform a scan. Step 6. Verify that all three BB markers are visible in the same slice. If they are not, either an error was made in setting up the installation phantom, or the Y plane of the MML system has not been made properly parallel to the MML scan plane. If this is the case, the MML room most likely need be re-marked, and lasers repositioned and re-aligned. Step 7. Verify the offset distance between the scan plane and the MML Y plane. This number does not need to be any specific number, or a round number, but its value should be noted for future use in patient setup. Step 8. Verify that the centre of the BB markers corresponds at least approximately to the centre of the radiographic scan. Note: Final alignment verification should be included in the normal room verification procedures initiated and maintained by the end user and should be performed and documented regularly. Page 44

45 Figure 8.1. Calibration procedure. SECTION 9: REMOTE CONTROL USER GUIDE 9.1 POWERING UP THE SYSTEM Each Maxx-1100 has a detachable mains supply cord, replacement cords should have A minimum 10 A Rating grounded 18AWG cord. The on switch is located near the entry point of this cord. Plug in unit with the switch in the off position then switch unit on. The power input also contains a replaceable fuse which Cemar Electro recommends replacing with a rated 1.0A. fuse. The following instructions outline how to initialize power to the remote control. Page 45

46 9.1.1 CHARGING REMOTE CONTROL The remote control is a battery-powered handheld electronic device. Before first time use, charge the remote as follows: Step 1. Place the charging board on a flat, clean surface and plug it in to a power outlet. Step 2. Gently insert the remote control into the charging slot. The charging LED will turn red. Step 3. Leave remote control in charger until the charging LED turns green. This may take several hours. Once the LED is green, the remote control battery is fully charged. Note: The remote control uses a 3.6 Volt Lithium ion battery return damaged or no longer used Remotes to Cemar Electro for proper disposal. Note: Whenever possible, rest the remote control on the charging board to ensure the battery is constantly charged POWERING UP REMOTE CONTROL Power the remote control on by toggling down the switch at the bottom of the remote control. Allow approximately 10 seconds before the Start page appears on the screen LASER UNIT DISPLAYS Figure 9-1. LED Display Panel on top of MAXX-1100 unit. These LEDs indicate status of different modules of the unit. WARNING: Repeatedly turning on and off the laser units can cause damage to your laser units. Page 46

47 Unit Number Display: This 8-segment LED displays the unit number, which should be 1, 2, or 3 for this revision. No two units can have the same unit number in a single room. System LED: The green LED indicates the system status of the unit. It is dark during calibration at power up and turns solid green when calibration is successfully completed. It blinks in different patterns indicating errors encountered during calibration or regular operation. Refer to Table 9-1 for details about System LED blinking. Ethernet LED: The amber LED indicates status of Ethernet connection between the unit and the router. Solid amber indicates the connection is correctly established. A dark LED indicates there is no valid Ethernet connection between the router and the unit. It starts blinking when Ethernet initialization and static IP address assignment cannot be completed. Zigbee LED: The red LED indicates status of Zigbee wireless connection between the unit and the remote control. Solid red indicates the connection is correctly established. A blinking LED means the connection cannot be established. During power up, the following events should occur in order. Step 1. Lighting Unit Number Display will become illuminated. Step 2. Establishing wireless connection: Zigbee LED starts blinking, indicating the unit firmware is searching for a remote control with the same PAN ID. Zigbee LED turns solid red once it is connected to the remote control. Step 3. Starting laser beams: Both the fixed and movable lasers start beaming. If laser beams cannot be started, the subsequent events will not occur. Step 4. Establishing Ethernet connection: Ethernet LED is solid amber if the unit is connected to a router via Ethernet cable; otherwise, the Ethernet LED is off. If neither wireless connection nor Ethernet connection can be established, the subsequent events will not occur. Step 5. Encoder checking and calibration: The movable laser starts moving in the negative direction (i.e., moving further away from the fixed laser). It changes direction when it hits the stopper on the negative end. The movable laser will travel the length of the encoder rail and hits the stopper on the positive end, close to the fixed laser. If no error is detected during the process, System LED becomes solid green indicating the calibration was successful. Note: For assistance in all aspects of troubleshooting, contact Cemar Electro Inc. for technical support. Step 6. Moving to CT zero: The movable laser keeps moving towards CT zero, if available. At initial power up, the laser will remain at the positive end as CT zero has not yet been established. Refer to Section for instructions on how to set up CT Zero of MAXX-1100 system. Step 7. Following successful completion of the above steps, the laser unit is ready to accept commands from desktop application via the Ethernet interface and/or from remote control via the Zigbee interface. Page 47

48 Table 9-1. Summary of LED blinking patterns during laser unit power up Code Blinking LED Blinking Pattern (per second) Cause Z0 E0 Zigbee LED Ethernet LED Zigbee module in the laser unit cannot connect to remote control Fails to assign static IP address based on unit number E1 System LED Fails to detect encoder zero E2 System LED Receives bad data signal from encoder E3 System LED Motor has jammed Note: In case of code E0, E1, E2, or E3, and/or associated blinking, contact Cemar Electro Inc. immediately to provide error information to technical support personnel. 9.2 REMOTE CONTROL OPERATION The Start page (Figure 9-2) is the entry point to all the operations on the remote control. Figure 9-2. Start page. Page 48

49 9.2.1 PAN ID BOX Each remote control and all the laser units in the same room share a network ID. If multiple rooms are equipped with MAXX-1100 units, each room has a unique network ID. The network ID of each remote control is displayed at the bottom of the screen. Depicts a PAN ID Box noting PAN 11, which means this remote control has a network ID of 11. The PAN ID of remote control is configurable. Refer to Section for more details LASER OPERATIONS ICON The remote control must verify connection to a laser unit via Zigbee protocol before sending any commands. Refer to Section to learn how to check wireless connection and to laser units and retrieve status data from connected units. Refer to Section 9.2 to learn how to use the remote control to perform various operations on connected units REMOTE CONTROL SETTINGS ICON You may also check status and update important configurations of the remote control itself. Section 9.2 provides more details. Page 49

50 9.2.4 GENERAL USE OF REMOTE CONTROL Remote Control Elements Name Navigation icons Icons and Descriptions Located at the upper left corner of the screen. previous page Appears at the up right corner of the screen and indicates status of operation on the selected laser units. The remote control and lasers are ready. Status bar The latest laser operation is in process. IMPORTANT: DO NOT touch the screen while the remote is in this state. If it lingers in this state much longer than the estimated time, restart the remote control. The latest laser operation has succeeded. The latest laser operation has failed. Refer to Section Error! Reference source not found. for troubleshooting instructions. For all the operations, wait until the status bar turns from yellow to green or red before you click the next icon. Note: It takes about one second for a single unit to process and reply to a non-lasermoving command. If a command is sent to all the connected units, it takes up to three seconds for the remote control to receive and process replies from all the units. For laser-moving commands, the responding time naturally depends on the distance that lasers have to travel. 9.3 LINKING AND STATUS CHECKING The following details how to link units and check their status. Page 50

51 9.3.1 WIRELESS COMMUNICATION STATUS There are three laser units in a fully equipped MAXX-1100 Laser System. The remote control checks laser units in the same network automatically every time when it enters the Connection page from the Start page. The Laser Status Checking page on the remote control will display as shown in Figure 9-3 if any of the following cases applies: Remote control has just been powered up PAN ID of the remote control has just been changed Laser connection status has just changed (e.g., new units have joined network or existing units have left network) Figure 9-3. Connection page; all lasers are connected LASER STATUS INDICATORS The most important information on Connection page are the Laser Status indicators. These indicators can display the following: : This laser is connected. : This laser is not connected. Figure 9-4 shows all three MAXX-1100 laser units connected in the wireless network of remote control. If only Unit #3 is connected, the Laser Status Indicators will display as. Laser operations will be available only on the Unit #3 laser. If none of the lasers are connected, the Laser Status indicators will display as. No operation is available if none of the three lasers is connected. Page 51

52 CHECK STATUS ICON Click Check Status icon to update status of laser units, including the current position, speed and power settings, and zero-point settings of every connected unit. This icon is always available regardless the status of wireless connections. 9.4 LASER UNIT STATUS If at least one laser is connected, click Check Status icon to bring up the Laser Operation icons on the Laser Operation page, as shown in Figure 9-4. Figure 9-4. Laser Operation page LASER STATUS INDICATORS Laser status indicators are updated based on the result of status checking. : This laser has reported its status and it is calibrated. All the operations are available on this unit. : This laser has failed to report its status or it is not calibrated. All the position-related operations are disabled on this unit. Laser power and speed configuration is still available. Page 52

53 9.4.2 LASER OPERATIONS ICONS Click one of the following Laser Operation icons to open the corresponding laser operation page. Each icon is referenced to a section where group operations are detailed in full. Home/CT Zero operations (Section 9.5) Zero Point settings (Section ) Laser Configuration (Section 9.6) Laser Line Positioning (Section 9.7) Express Points operations (Section 9.8). These operations are only available when the current reference system is based on CT Zero (See details in Section 9.5). You may refresh laser status at any time. 9.5 HOME/CT ZERO OPERATIONS Figure 9-5 shows an example of CT Zero page of the remote control. This page shares many common elements with other position-related pages including Zero Settings page, Laser Position page, and Express Point page. These elements are explained in detail in this section. Figure 9-5. CT Zero page: Reset zero. Page 53

54 9.5.1 CURRENT ZERO BOX The Current Zero box displays the current setting of the reference system. Three possible reference systems are based on a zero-point setup: CT Zero: Zero point of MAXX-1100 system is aligned with CT machine zero. PAT Zero: Zero point of MAXX-1100 system is set to be a temporary point other than CT machine zero. Reset Zero: Zero point of MAXX-1100 system is set to be reset zero, which is the absolute zero point in the middle of the encoder rail. A group of operations are dedicated to switching between different zero systems, as introduced in Section Current Zero box can also be found at the same location on Zero Settings page, Laser Position page, and Express Point page. Any zero setting change on one of these pages will update Current Zero box on all of these pages UNIT-AXIS SELECTION Click the Unit-Axis Selection icon multiple times to work with all the connected units one by one. The same icon also appears on Zero Settings page and Laser Position page for unit-axis selection. In a fully-installed MAXX-1100 system, there are three possible unit-axis selections. 1-Z1: the movable laser on Unit #1. 2-Z2: the movable laser on Unit #2. 3-X: the movable laser on Unit #3. Click the Unit-axis Selection icon repeatedly to go through the above unit-axis selections sequentially. If one laser unit is not connected to the remote control, the corresponding unit-axis selection will be skipped CURRENT LASER POSITION This text field shows the current position of selected unit-axis, relative to current zero setting. The following rules apply to all the laser position displays on the remote control. All the position values are in unit of millimeter (mm). A positive position value means the laser is closer to the fixed laser on the same unit compared to current zero point. A negative value means the laser is further away from the fixed laser compared to current zero point. A value of zero means the laser is right at current zero point. The position text becomes >>>>>> while the lasers are moving. Page 54

55 9.5.4 LASER MOVING ICONS These icons send commands to the selected laser only. Current Laser Position will be updated upon completion of any movements. The same group of icons also appear on the Zero Settings page. Click the icon once to move the selected laser one step towards the negative direction. Click the icon once to move the selected laser one step towards the positive direction. Press and hold the icon to move the selected laser towards the negative direction; release the icon to stop the movement. Press and hold the icon to move the selected laser towards the positive direction; release the icon to stop the movement. Note: The remote control will ignore the command if the operator clicks the icons faster than twice per second. It takes about one second from sending a command to a unit to getting a positive reply from the unit, excluding time of laser movement. Clicking laser moving icons too fast does not speed up the process CT ZERO FUNCTION ICONS Save CT Zero: Save current position as CT Zero point on all connected lasers. Go Home: Move all connected lasers back to CT Zero point. This icon is hidden if CT Zero point is not set SET CT ZERO POINT All MAXX-1100 units from Cemar Electro Inc. have been set to Reset Zero before shipping. At the first power-up after installation, the movable laser stops at the furthest positive end of the rail after calibration. The first step to complete immediately following mechanical installation is to set CT Zero on all the installed units. On the remote control, Figure 9-6 shows the CT Zero page at the first power up. Current Zero box displays Reset Zero. Current Laser Position shows the position relative to the mechanical zero point. This value is the distance from the mechanical zero point to the stopper at the fixed laser side, where the movable laser is stopped after encoder calibration. This distance is slightly different on each unit. Page 55

56 Figure 9-6. CT Zero page: First power up. Figure 9-7. CT Zero page: Laser 1-Z1 is aligned to CT Zero. The operations to set a new CT Zero point include two steps: Moving lasers to the desired coordination and saving the coordination as the new CT Zero. Step 1. Align lasers to CT machine zero. Select a unit-axis, and use the laser moving icons to align this laser to CT machine zero on the corresponding axis (Figure 9-6). Select next unit-axis and repeat until all the connected lasers are aligned to CT machine zero (Figure 9-7). Step 2. Save current laser position as CT Zero. Click the Save CT Zero icon to save the current coordination as CT Zero point of the reference system (Figure 9-8). The Save CT Zero command is sent to all connected laser units (Figure 9-9). This command overwrites the existing CT Zero settings on laser unit firmware, if any. Figure CT Zero page: Saving new CT Zero. Figure CT Zero page: New CT Zero has been set. Page 56

57 Upon successful completion the status bar will turn green. Current Laser Position becomes 0.0 mm for all connected lasers. The Current Zero box displays CT Zero. The previously hidden Go Home icon appears. Now CT Zero has been set. CT Zero can be updated as many times as needed. The procedure is the same HOMING LASERS TO CT ZERO At any point lasers need be returned to CT Zero point, simply open Laser Home page and click Go to Home icon (Figures 9-10, 9-11). The Go to CT Zero command is sent to all connected lasers; each moveable laser will return to the saved CT Zero position and stop. The remote control updates Current Laser Position to be 0.0 mm for all lasers. Figure CT Zero page: Away from CT Zero. Figure CT Zero page: Back to CT Zero CHANGING ZERO SETTINGS Laser reference system can be switched between CT Zero, Patient Zero, and Reset Zero. Note: Remember that the MAXX-1100 system works in CT Zero reference system by default at power up, if CT Zero has been set. Any Patient Zero settings will be lost at power cycle. If you wish to keep certain coordination persistent after power cycle, use the Express Point settings (Section 9.8). Page 57

58 Figure Zero Settings page. The Zero Settings page (Figure 9-12) is very similar to the Laser Home page. The only difference is the Zero Settings icons ZERO SETTINGS ICONS Switch to CT Zero. See details in Section Switch to PAT Zero. See details in Section Reset Lasers. See details in Section Page 58

59 SWITCHING FROM CT ZERO TO PATIENT ZERO The procedure to switch reference system from CT Zero to Patient Zero is similar to setting new CT Zero point. Figure Zero Settings page: Moving lasers to desired coordination. Figure Zero Settings page: New PAT Zero saved. Step 1. Move lasers to a designated coordination. Select the laser axis with the Axis Selection icon. Move the selected laser to desired position with Laser Moving icons on this page or specifying target position on Laser Position page (Section 9.7). Repeat until all the lasers have moved to the future zero point. In the example of Error! Reference source not found.figure 9-13, the movable laser of Unit #1 is moved to mm on the X axis in the CT Zero reference system. We assume that the movable lasers on the other two units have also been moved to the designated coordination. Step 2. Save current laser position as PAT Zero point and switch reference system to PAT Zero. Click the Switch to PAT Zero icon; the Switch to PAT Zero command is sent to all three units. Each unit updates their own zero settings and current laser position based on new zero point. Upon receiving positive replies from the units, the remote control updates related UI components on Zero Settings page: PAT Zero in Zero Settings box and 0.0 mm in Current Laser Position (Figure 9-14). The operator can click the Axis Selection icon to check position updates of other lasers. From now on, all the position values are based on the saved PAT Zero point, until the operator switches the reference system to be based on another zero point. Page 59

60 SWITCHING FROM CT ZERO/PATIENT ZERO TO RESET ZERO During installation or maintenance procedure, it may be necessary to move lasers to their Reset Zero positions. One click on Reset icon will drive all connected lasers to the middle point of their rails. The time duration for this operation depends on where the CT Zero is from Reset Zero. Figure Zero Settings page: CT Zero. Figure Zero Settings page: Lasers are at Reset Zero. When lasers are at CT Zero point (Figure 9-15), the operator will click the Reset Lasers icon, and the movable lasers start to move towards the mechanical zero point. Once the lasers arrive at the zero point, the units send replies to the remote control, which updates related UI elements on Zero Settings page (Figure 9-16). At this time, the Zero Settings box will display Reset Zero; the current position is 0.0 mm relative to Reset Zero. The Reset Lasers and Switch to PAT Zero icons are hidden because these functions are not applicable when the reference system is based on Reset Zero. Page 60

61 SWITCHING FROM PATIENT ZERO/RESET ZERO TO CT ZERO To switch back to CT Zero reference system, click Switch to CT Zero icon and wait for the command to be completed. Figure Zero Settings page: Lasers are at Reset Zero. Figure Zero Settings page: Reference system is switched back to CT Zero. When the movable lasers are at Reset Zero point and the reference system is based on Reset Zero point, the operator will click the Switch to CT Zero icon, and the remote control sends the Switch to CT Zero command to all lasers (Figure 9-17). The firmware on each unit switches the reference system to CT Zero, and calculates the current position relative to CT Zero. The remote control updates the UI upon receiving positive replies from the units. The updated position of movable laser will be displayed (Figure 9-18). The Reset Lasers and Switch to PAT Zero icons appear again because the lasers are in the CT Zero reference system, indicated in Zero Settings box. Note: Lasers will not move during the switch from Patient Zero/Reset Zero to Ct Zero. Only the reference system is switched. The operation is the same to change reference system from PAT Zero to CT Zero. Page 61

62 9.6 LASER CONFIGURATION / ADJUSTMENT Click the Laser Configuration icon to open the Laser Power page (Figure 9-19). Figure Laser Power page NAVIGATION ICONS Return to Laser Functions page. Jump to Laser Speed page UNIT SELECTION ICONS This unit is connected and selected. This unit is connected but not selected. This unit is not connected. By default, all the connected units are selected. Click the Unit Selection icon to select the current unit only; click the icon a second time to select all the connected units POWER LEVEL GRID The number of green cells in the power level grid corresponds to the power level setting of the lasers on this unit. By default, all lasers are powered up at level 4 (Figure 9-19). Power level can only be adjusted individually on the selected unit. Page 62

63 POWER FUNCTION ICONS Note: Power of multiple lasers on the same unit cannot be independently adjusted or switched. Power-on: Turn on the laser beam of selected unit(s), available when at least one selected laser is off. Power-off: Turn off laser beam of selected unit(s), available when at least one selected laser is on. Power-down: Decrease laser power by one level on selected unit, only available when a single unit is selected and its lasers are beaming. Power-up: Increase laser power by one level on selected unit, only available when a single unit is selected and its lasers are beaming. Typical laser power functions are illustrated below. Switch laser power on all units. Click the Power-on icon to turn on all connected lasers (Figure 9-20). Click the Poweroff icon to turn off all connected lasers (Figure 9-21). Figure Laser Power page: All lasers are beaming. Figure Laser Power page: No laser is beaming. Page 63

64 Switch laser power on a single unit. Click the Unit Selection icon to select the unit (Figure 9-22) and click the Power-off icon or the Power-on icon to switch power of the lasers on the selected unit (Figure 9-23). Figure Laser Power page: Unit #3 is selected. Figure Laser Power page: Lasers on Unit #3 are beaming. Adjust laser power level on a single unit. The two power adjustment icons will appear if the selected laser is currently beaming. The effect is immediate and persistent (i.e., this laser will beam at the same level of brightness even after a power cycle). The remote control always displays the updated information on laser power status. In the example of Figure 9-24, the lasers on Unit #3 are beaming at power level 4. The operator clicks the Power-up icon twice to increase the power level to 6, as shown in Figure The same procedure applies if the laser power level needs to be reduced. Figure Laser Power page: Lasers on Unit #3 are beaming at level 4. Figure Laser Power page: Lasers on Unit #3 are beaming at level 6. Page 64

65 9.6.3 LASER SPEED ADJUSTMENT Click the Laser Configuration icon to open the Laser Speed page (Figure 9-26). Figure Laser Speed page: Factory settings SPEED BAR Laser moving speed can be set to five different levels. The default speed is medium, about 40 mm/second. Laser moving speed can be adjusted individually on the selected unit or on all the connected units (Figure 9-26). If a laser unit is not connected, the speed bar is hidden SPEED FUNCTION ICONS Speed-up: Increase moving speed of movable laser on selected unit(s) by one level. Slow-down: Decrease moving speed of movable laser on selected unit(s) by one level. Save Changes: Send any speed adjustment command to selected unit(s). Page 65

66 Typical usages of laser power functions are explained and illustrated below. Adjust moving speed of movable lasers on all connected units. With all the unit icons in selected mode, click Speed-up or Slow-down icon to change the moving speed. The Save Changes icon appears when there is any change. Then click Save Changes icon to send command to all connected units to actually change the speed settings on laser unit firmware. Any unsaved changes will be ignored. In the example of Figure 9-27, the operator will click the Speed-up icon twice to change moving speed to Fastest. There is no color change in status bar because these changes are only on remote control side for now. The Speed-up icon is hidden because the tentative speed is already at the maximum value. Similarly, Slow-down icon will be hidden if the current or tentative speed is at the minimum value. The operator will click the Save Changes icon to send commands to all the units to complete the operation. As shown in Figure 9-28 the movable lasers on all the units will move at the highest speed from now on. Figure Laser Speed page: Changing speed to fastest. Figure Laser Speed page: Speed change is saved. Page 66

67 Adjust moving speed of movable laser on a single unit. Click the Unit Selection icon to select a single unit; click the Speed-up or Slow-down icon to set value of desired speed. Finally click the Save Changes icon to send the Save Changes command to the selected unit to complete the operation. If the operation is successful, the movable laser on the selected unit will move at the new speed in the future. In the example of Figure 9-29, Unit #3 is selected. The current speed is Highest. The operator changes the setting to Slower, as shown in Figure Figure Laser Speed page: Figure Laser Speed page: Unit #3 is selected. Set new speed for Unit #3 9.7 LASER LINE POSITIONING The operator can specify a target position for the movable lasers and fine tune the final positions with micro-stepping functions (Figure 9-31). Figure Laser Position page. Page 67

68 9.7.1 NAVIGATION ICONS Return to Laser Functions page. Jump to Express Points page. Move Lasers. Click this icon to send the Move to Target command to all connected lasers if input target position value is valid for each selection. All lasers that receive this command will move to target position and send reply message to the remote control, reporting their current position. Micro-stepping. These icons are not available for axis selection Z1 = Z AXIS SELECTION ICON Click the Axis Selection icon to select next available laser-axis in order to input target position value or use micro-stepping icons to adjust the final position of the selected laser-axis. There are four possible Axis Selection options: Z1 = Z2, 1-Z1, 2-Z2, and 3-X. In most cases, Z1 and Z2 are both aligned to the Z axis of CT Zero. The operator can therefore specify one target position for both Z1 and Z2. However, it is also possible to specify different target positions for Z1 and Z CURRENT LASER POSITION The current position value is based on current zero setting, which is shown in the Zero Setting box on the Laser Home page. If Z1 and Z2 are not at the same position, the Current Position shows N/A when axis selection is Z1 = Z2. For all the other axis selections, the Current Position shows a valid position value or N/A if the remote control has no knowledge of valid position value of the selected laser-axis. In the example of Error! Reference source not found. Figure 9-31, the movable laser of Unit #1 is at position 0.0 mm (i.e., aligned with CT Zero). Page 68

69 9.7.4 USER INPUT ICONS The operator can use the digits, negative sign, and dot icons on the remote control to enter a positive or negative value as the target position for selected laser. Clear Input icon: This icon will clear all the input LASER POSITIONING Typical usages of laser position functions are explained and illustrated below. Move lasers to a target position. Select a laser-axis, and provide a valid target position. Repeat this step until target positions are specified for all the available selections of laser-axis. Click Move Lasers icon to move all connected lasers. Wait until the remote control receives replies from all lasers. Figure Laser Position page: Figure Laser Position page: Z1 = Z2 selected. Input for Z1 = Z2. In the example of Figure 9-32, Z1 and Z2 are initially at CT Zero point. The operator will enter the target position 79.5 for the Z axis, as shown in Error! Reference source not found. Figure The operator will click the Axis Selection icon twice, to check that target position for Z1 and Z2 are both Clicking the Axis Selection icon again will select 3-X, as shown in Error! Reference source not found. Figure Page 69

70 Figure Laser Position page: Input for 3-X. Figure Laser Position page: All lasers moving to target. The operator will then click the Move Lasers icon to start moving the lasers. Figure 9-35 illustrates the Laser Position page while lasers are moving towards the target. The status bar will turn yellow; Current Position will appear as >>>>>> because the remote control has no knowledge of lasers current position while lasers are moving. Figure Laser Position page: Z1 and Z2 at target position. Figure Laser Position page: 3-X at target position When lasers successfully arrive at their destinations, the status bar turns green. The current position is updated to the actual value; due to calibration, this may not be exactly the same value as the input number. The difference between the target position and the actual position is ± 0.2 mm, as shown in Figure 9-36 and Figure Invalid input for target position. If the input value is not a valid target position, the input field will show tips on how to enter a valid target position value when the Move Lasers icon is clicked. There are two types of invalidity: Input is in wrong format and input is out of range. Page 70

71 Option 1. Input is in wrong format. The input value should be a valid positive or negative decimal number. Only one digit after the decimal point is permitted because the accuracy of laser positioning is 0.1 mm. Figure Laser Position page: Input in wrong format. Figure Laser Position page: Correct input format. In the example of Figure 9-38, the operator entered an invalid target position then clicked the Move Lasers icon. The remote control checked the input string and detected the input was in the wrong format. The correct format will then display onscreen, as shown in Figure The operator will need to click the Clear Input icon to clear the input box before entering the correct target position. Option 2. Input is out of range. The moving range of each laser is 600 mm. Depending on zero-point setup, input range is calculated and given as [ zero offset, zero offset]. Figure Laser Position page: Input is out of range. Figure Laser Position page: Current input range. In the example of Figure 9-40, the operator entered a large number as the target position then clicked the Move Lasers icon. The remote control shows the current input range in the input box (Figure 9-41). The operator needs to click the Clear Input icon to clear the input box before entering the correct target position. Page 71

72 Adjust laser position in micro steps. The micro-stepping icons can be used to adjust laser positions at high accuracy of less than 0.3 mm. Each micro-step is approximately 0.2 mm of distance. Note: The first few steps after changing direction of movement may not result in any actual position updates because of motor backlash. Save current position as an Express Point. If it is necessary to move lasers to a certain position multiple times, the operator can save this position as an Express Point, allowing the lasers to move to this exact positioning the next time. Click the Go to Express Point icon to open Express Point page and follow instructions in the next section to set and visit Express Points. 9.8 EXPRESS POINTS OPERATIONS An Express Point is a user-defined point that is saved in the system. System operators can move lasers to an Express Point on one-click operation, rather than adjusting lasers to specific positions every time. You may save up to five points in the current MAXX-1100 system. You may define or clear an Express Point at any time by visiting the Express Points page (Figure 9-42) from the Laser Functions page or the Laser Position page. Figure Express Points page. Note: All Express Point positions mentioned in this section are based on CT Zero, as the Express Points operations are only available when reference system is based on CT Zero. Page 72

73 9.8.1 NAVIGATION ICONS Return to Laser Functions page. Jump to Laser Position page. Point Selection. Use these icons to select the Express Point to be manipulated. Express Points are labeled as P1, P2, etc EXPRESS POINTS FUNCTION ICONS Point Save. Point Clear. Move Lasers to Point UNIT NUMBER ICONS This unit is connected and selected. This unit is connected but not selected. This unit is not connected. By default, all the connected units are selected. Click on the Unit Selection icon to select this unit, and click it again to select all the connected units POSITION FIELDS Current Laser Position (in blue) illustrates the current position of the corresponding laser axis. Current Point Position (in red) illustrates the position value of the current point for the corresponding laser axis. If the current Point is not defined yet, Current Point Position is /, as shown in Figure Otherwise, Current Point Position displays the saved position of this Point, as shown in Figure Page 73

74 Figure P3 is selected. If a unit is not connected, Current Laser Position and Current Point Position fields are hidden EXPRESS POINTS MAIN OPERATIONS Retrieving Express Points. The remote control retrieves and displays Express Point information automatically when the operator has selected an Express Point. The remote control will retrieve Express Point information from each connected laser unit, if it is the first time the Express Points page is loaded, or the operator has clicked the Laser Status icon ( ) on the Laser Operations page (Figure 9-43). In these cases, the operator should expect a short delay when a defined Point is selected, while the remote control is loading data from laser firmware. Once the information is loaded, there should be no delay when switching between different points. Setting up Express Points on all lasers. Follow the three steps below to set up an Express Point. The operation is the same for both defining a new point and overwriting an existing point. Step 1. Move lasers into the position to be saved as an Express Point. Position the laser at the desired coordinates, following the positioning instructed detailed in Section Step 2. Select an Express Point. Open the Express Points page, and use the Point Selection icon to select an Express Point. In the example of Figure 9-44, Express Point P3 is selected. The current laser coordination is (Z1 = 50, Z2 = 50, X = -100). Page 74

75 Figure Express Points page: P3 is saved. Step 3. Save the position to the selected Express Point. Click the Point Save icon to save the current position to the selected Express Point. The Save Point command is sent to all connected lasers. Lasers do not move upon receiving this command. Each laser saves the current position to the selected Express Point and replies to the remote control to confirm the result of this operation. The Point Position fields are updated accordingly if the remote control receives positive replies from all the connected lasers. In the example of Figure 9-44, P3 is successfully defined. From now on, the lasers can move to P3 (Z1 = 50, Z2 = 50, X = -100) on one click. Moving Lasers to Express Points. The purpose of setting up an Express Point is to move lasers quickly to the position later. Follow these two steps to move laser to a defined Express Point. Step 1. Select an Express Point. Follow the same protocol as Setting up an Express Point (Section 9.8.3). Step 2. Move all lasers to the selected Point. Click Move Lasers to Point icon to send command Move Lasers to Point to all connected lasers. The lasers move to the selected Point and report the current position to remote control. In the example of Figure 9-45, the lasers are at CT Zero point and P3 is selected as the target Express Point. In Figure 9-46, all lasers have moved to P3 at one click of Move Lasers to Point icon; positioning via this function is within ± 0.2 mm of the target value. If the exact position is required, use the micro-stepping functions on Laser Position page to do fine adjustment. Page 75

76 Figure P3 is selected as the Figure Laser has moved to target point. P3. Setting up Express Points on selected laser axis. In case only one laser axis needs to be defined or modified for an Express Point, the operator can set up Express Point on the selected unit only. Step 1. Move lasers into the position to be saved as an Express Point. Please use laser positioning functions on other pages, such as the Laser Position page, to move laser to the desired position. In the example of Figure 9-47, laser 3-X has been moved to position mm. Step 2. Select an Express Point. Open the Express Points page, and use the Point Selection icons to select an Expression Point. In Figure 9-48, Express Point P3 is selected. The existing position value of P3 for laser 3-X is mm. Step 3. Select a unit. Click one of the Unit Number icons to select the laser unit and its movable laser. Page 76

77 Figure Express Points page: Laser 3-X at new position. Figure Express Points page: Laser 3 is selected. Figure Express Points page: P3 of Laser 3-X is updated. Step 4. Save the position to the selected Express Point Click Point Save icon to save the current position of the selected laser to the selected Express Point. The Save Point command is only sent to the selected laser, which saves the current position to the selected Express Point and sends reply to remote control indicating the result of operation. The Point Position field of the selected laser is updated accordingly if the remote control receives positive reply. No laser movement is triggered during this operation. In the example of Figure 9-49, P3 has been updated on Laser 3-X from to Moving selected laser axis to Express Points It is also possible to move only one laser axis to a saved position without affecting other lasers. Step 1. Select an Express Point. Step 2. Select a unit. The first two steps of this operation are the same as Steps 2 and 3 of the previous operation. Page 77

78 Step 3. Move selected laser to selected Point. Click Move Lasers to Point icon to send command Move Lasers to Point to the selected laser only. The laser moves to the selected point and reports its current position to the remote control. The other lasers are not affected. In the example of Figure 9-50, the operator selects Express Point P2 on laser 3-X (i.e., the movable laser on Unit #3). The current position of laser 3-X is The operator clicks the Move Lasers to Point icon and laser 3-X moves to its P2 position of As shown in Figure 9-51, the updated position of laser 3-X is Lasers Z1 and Z2 stay at the initial position. Figure Express Points page: Figure Express Points page: P2 on laser 3-X selected. Laser 3-X arrives at P2. Clearing an Express Point definition A defined Express Point can be cleared. Please note that this operation is not available for individual laser. Step 1. Select an Express Point. Step 2. Clear the selected Point. Click Point Clear icon to clear the definition of the selected Point. In the example shown in Figure 9-52 and Figure 9-53, the definition of P3 has been cleared. No laser movement is triggered by this command. Page 78

79 Figure Express Points page: P3 is selected. Figure Express Points page: P3 has been cleared. 9.9 REMOTE CONTROL SETTINGS Click the Remote Control Settings icon on the Start page, and the remote control will open the Remote Control Settings page (Figure 9-54) immediately. Figure Remote Control Settings REVISION NUMBER BOX This box shows the revision number of remote control software. This User Guide pertains to Revision Please make sure that your remote control and all the documents have the same revision number. Page 79

80 9.9.2 BATTERY CAPACITY INDICATION Battery Capacity Indication informs users how much capacity is remaining in the battery. Both the battery capacity percentage and the battery image are updated every 30 seconds. The battery image shows green blocks if the capacity is greater than 25%. The last remaining block turns yellow if the capacity is between 20% and 25%. The last remaining block turns red if the capacity is below 20%. Low Battery Warning starts to pop up. Please refer to Section for more information about Low Battery Warning LOCAL FUNCTION ICONS There are two categories of remote control-oriented settings: Power saving settings and PAN ID configuration. Power Saving Settings: Click this icon to open Power Saving Settings page. See details in Section PAN ID Configuration: Click this icon to open Password page to enter password for PAN ID configuration. See details in Section LOW BATTERY WARNING The Low Battery Warning, as shown in Figure 9-55, starts popping up every five seconds if the battery capacity is below 20%. All the regular operations are not affected as long as the icons are not blocked by the popup. You may click the Close Popup icon warning, or wait five seconds until it disappears automatically. to dismiss the We strongly suggest that you put the remote control to a charger immediately as soon as the first Low Battery Warning shows up. If you ignore the warning and continue using the remote control without charging, the remote control will enter sleep mode automatically as soon as the remaining capacity is below 15%, which may cause service disruption and unexpected results. Page 80

81 Figure Low battery warning popup POWER SAVING SETTINGS Minimize power consumption will maximize the operation time of the remote control. Two power-saving configurations are available on the remote control (Figure 9-56): LCD-off Timer and the Sleep Timer. Figure Power Saving settings LCD-OFF TIMER SETTING The LCD-off Timer will begin counting whenever there is no user activity on the LCD screen. The backlight of the LCD screen will shut off if the LCD-off Timer expires. The default value of LCD-off Timer is 2 minutes. The operator can change it to any integer value between 1 and 10 by clicking the and icons. Page 81

82 SLEEP TIMER SETTING The Sleep Timer will begin counting whenever there is no user activity on the LCD screen. The remote control will enter sleep mode if the Sleep Timer expires. The default value of Sleep Timer is 15 minutes. The operator can change it to any integer value between 10 and 30 by clicking the and icons SAVE CHANGES ICON If any of the timer settings are changed, the Save Changes icon will appear to enable saving changes to the remote control. The new settings take effect immediately WAKE-UP METHODS Option 1. LCD-off: Tapping the touch screen at the top right corner will reactivate the LCD screen and allow users to resume previous operation. WARNING: Do not touch anywhere else to wake up the screen, control icons may inadvertently be activated, causing unwanted laser movements. Option 2. Sleep: Toggling the power switch upwards will reactivate the remote control and allow users to resume previous operation NETWORK ID CONFIGURATION This function allows operators to change PAN ID of the remote control. Cemar Electro Inc. recommends permanently associating one remote control to one set of lasers. It may, however, be practical to use one remote control to adjust lasers in multiple rooms in such cases as: A remote control is dysfunctional. Operators may temporarily use another remote control in place of the original to ensure uninterrupted medical service. Some operators prefer to use one remote control to set up and adjust laser units in all rooms to ensure better equipment management. A single remote control need be used to configure the spare unit. In any of the above cases, PAN ID of the remote control must be changed before it can be used to control lasers in the room. Please follow the steps below to switch PAN ID of a remote control. Page 82

83 PASSWORD INPUT Click corresponding digit icons to input password. All the input digits will be displayed as * in the Password Input field. Click the PAN ID Configuration icon on the Remote Control Settings page to open the Password page (Figure 9-57). The system will permit three chances to enter the correct password. After three unsuccessful trials, the remote control will disable this function and jump back to Remote Control Settings page (Figure 9-54) automatically. Figure PAN ID Configuration Password page. Step 1. Enter password. Note: Improper use of this function may cause communication chaos in multiple rooms equipped with MAXX-1100 laser units. This function is password-protected. Please contact Cemar Electro Inc. for more information. Step 2. Change PAN ID number. If password input was correct, the PAN ID Configuration page will open, as shown in Figure Figure PAN ID Configuration page. Page 83

84 Step 3. PAN ID Configuration Area The current PAN ID of the remote control is displayed on the page (Figure 9-58). Valid values of PAN ID for MAXX-1100 system include 11, 21, 31, 41, 51, 61, 71, 81, 91, A1, B1, C1, D0, E1, and F1. Contact Cemar Electro Inc. if you have more than 15 rooms to be equipped with MAXX-1100 laser systems. Step 4. Save Changes Click this icon to make the actual changes of PAN ID. The saving procedure should finish within five seconds. The status bar turns green on success and the Save Changes icon will be hidden until new changes are made, as shown in Figure Figure PAN ID Configuration page: Change is saved. Step 5. Verify new PAN ID. The new PAN ID can be verified by returning to the Main page and checking PAN ID there. Figure 9-60 shows that the current PAN ID is 31. Once this set-up is complete, the remote control is ready to send commands to laser units in the new PAN network. Figure Main page: PAN ID is updated. Page 84