P/N Operation & Installation Manual Teleprompter Pan/Tilt Head Model PT-LP

Transcription

1 P/N Operation & Installation Manual Teleprompter Pan/Tilt Head Model PT-LP

2 Table of Contents 1.0 Scope Introduction Specifications Installation Pan/Tilt Head Mounting Energizing Head Serial Data Connection Camera Mounting Lens Interface Information End Stop Setting Operational Check Connector Input/Output Signals...15 APPENDIX A Telemetrics Serial Data Protocol...18 APPENDIX B Pan/Tilt Setup For CP-RMQ-3A...24 Table of Figures Figure 1 PT-LP Assembly...1 Figure 2 Pan/Tilt Head Mounting Pattern...4 Figure 3 Pan/Tilt to Televator Mounting...5 Figure 4 Power Cable CA-PWR-6XLR-XXX...6 Figure 5 Power Cable CA-PWR-CMTR-XXX...6 Figure 6 Serial Data Cable CA-RS-XXX...7 Figure 7 Adjusting Vertical Center of Gravity...9 Figure 8 End Stop Setting...11 Figure 9 Drive Block Assembly...12

3 TILT DRIVE BLOCK ASSY. PAN DRIVE BLOCK ASSY. PT-LP Figure 1 PT-LP Assembly 1

4 1.0 SCOPE This manual contains installation and operation information for the Telemetrics Teleprompter Pan/Tilt Head Model PT-LP, Part No This Pan/Tilt is designed for use in studio teleprompter applications. Due to the different types of cameras and lenses the Pan/Tilt interfaces with, many options are manufactured. Some of those options are described in the following paragraphs. Please consult the factory for the specific options available. 2.0 INTRODUCTION The PT-LP is a robotic camera pan/tilt head incorporating zoom and focus lens functions. It is serially controlled with positional feedback for shot storage and recall. The pan/tilt head is powered from a low voltage (+24VDC) external power source. Interconnection between the control unit and Pan/Tilt is accomplished with a serial control cable. The serial data interface is RS-232 standard or RS-422 optional. The PT-LP is typically controlled by a Telemetrics Serial Control Panel (CP-RMQ- 3A, CP-R-2A, or CP-D-2A). Third party RS-232/422 control systems can also be used to interface with the unit. Please consult factory for configuration assistance. See Appendix for Serial Protocol specifications. 2

5 3.0 SPECIFICATIONS Input voltage Input current 24VDC 800mA to 1.5A max Pan travel ±170 Tilt travel ±30 *End stops *Max pan velocity *Max tilt velocity Operating modes Operating modes Preset Feedback Voltage Preset Resolution Accuracy P/T Audible Noise Lens Audible Noise Mounting Dynamic Load Weight Dimensions Continuous Angular Adjustable 4 /sec max 4 /sec max Open loop (proportional velocity) or preset recall. Externally commanded presets or internally stored. open loop (proportional velocity) or preset recall 0 to 4095 per axis for 0 to 340 in pan and tilt 12 bits ±15 arc min. 37 db(a) max, IEC Free Field 36.5 db(a) max, IEC Free Field (Typical Telecon Lens) Pedestal 35 lbs. max. 15 lbs. Pan/Tilt only 15 H x 10 W x 6 D * End stops are set to ±170 Pan and ±30 Tilt unless otherwise specified by customer. 3

6 4.0 INSTALLATION 4.1 Pan/Tilt Head Mounting The PT-LP is primarily designed for a pedestal mount. It can be mounted on a tripod, shelf mounting bracket (MA-SHFBKT) or wall mounting bracket (HP- WMBKT). The unit can also be mounted on a Telemetrics Televator (EP- PT). To mount on a shelf bracket, use (4) ¼-20x ½ machine screws in tapped holes. (Note: Ensure proper screw length is used. Excessive screw length may interfere with the unit and hinder pan motion.) To mount on a tripod, use the 3 / 8-16 and (2) ¼-20 tapped holes in the middle of the mounting plate. Refer to Figure 2 for P/T base mounting arrangement. Always be sure the notch in mounting plate faces the center of the field of view. Avoid excessive widening of one end stop; the Pan/Tilt should swing symmetrically about the notch. Rotate the Pan/Tilt assembly on mounting so the notch is near the center of pan range. 4" Dia CL Notch should be located at center of Field of View Tap ¼-20 2 Holes (Tripod Mounting) Tap 3/ 8-16 (Tripod Mounting) 1½" CL 3" Dia B.C. Tap ¼-20 4 Holes (Shelf or Flange Mounting) Figure 2 Pan/Tilt Head Mounting Pattern To mount the unit on a Telemetrics Televator, attach the mounting plate to the P/T as shown in figure 3. The unit can then be mounted directly on the Televator using x ¾ Socket Head Cap Screws. 4

7 Controls Conn. Pan/Tilt Head Pan/Tilt Mounting Plate ¼ -20 x ½ FH Socket Cap Screw Televator x ¾ Socket Head Cap Screw Figure 3 Pan/Tilt to Televator Mounting 5

8 4.2 Energizing Head Power to the unit is made via interconnect cable CA-PWR-6XLR-XXX to the 6 pin XLR power connector located on the Tilt Chassis Assy (Note: XXX=Feet). The other end of interconnect cable connects to the external power supply (maximum distance = 400 feet). (Note: Power on pins 3 and 4 is used for Televator power.) Figure 4 Power Cable CA-PWR-6XLR- XXX If the unit has the Camera Power Option, power is transmitted via interconnect cable CA-PWR-CMTR-XXX to the 6 pin XLR power connector. 4.3 Serial Data Connection Figure 5 Power Cable CA-PWR-CMTR-XXX Communication to the unit is made through the serial data cable CA-RS-XXX to the 9 pin serial data connector located on the Tilt Chassis Assy (see Figure 1). The other end of the cable connects to the control panel. Units built for RS-232 can have a maximum distance of 100 feet between the unit and the control panel. Units built for RS-422 can have a maximum distance of 4000 feet between the unit and the control panel. (Note: Units are built to accept either RS-232 or RS-422 at the factory. Verify which type of unit is being used.) 6

9 Figure 6 Serial Data Cable CA-RS-XXX 7

10 4.4 Camera Mounting IMPORTANT To obtain proper center-of-gravity of camera, check that the camera wedge plate and any accessories are mounted to the camera. A. Set the camera, with all its accessories mounted (including lens, teleprompter,etc.), on a small round object such as a dowel or pen. B. Move camera back and forward on the dowel until balance or center of gravity has been located. Mark location with pencil or piece of tape. A B C. Determine the center of rotation of the tilt axis on the pan/tilt head. Mark location with pencil or piece of tape. D. Set the camera, with accessories attached, on the tilt cradle and align the center marks. C D E. Install mounting bolts and tighten with camera on center of gravity. F. Adjust the vertical mounting height by loosening the (3) ¼-20 Sockethead screws. G. Position the mounting plate up or down so vertical center of gravity of camera is lined up with the center of rotation of the tilt axis. (See Figure 7) All cables should be dressed and secured to minimize interference with pan and tilt motion. 8

11 Center of Rotation of Tilt Axis Adjustable Mounting Height ¼-20 Sockethead Screws Center of Gravity of Camera & Accessories Figure 7 Adjusting Vertical Center of Gravity 9

12 4.5 Lens Interface Information 1. In order to use Fujinon BMD or Canon KTS series teleconferencing lenses with the Pan/Tilt, simply plug lens controls pendant into the Pan/Tilt lens connector on the Tilt Chassis. NOTE The PT-LP is a Telemetrics preset system, therefore additional modifications must be performed to bring the focus and zoom positional voltages out of the lens. Please contact factory for complete instructions. 2. If the zoom lens is not a teleconference style lens (a teleconference lens has an integral zoom and focus amplifier), an interface cable will be supplied. The connector marked zoom plugs into the zoom servo and the connector marked focus plugs into the focus servo. Please refer to the lens/camera manuals for connections other than remote zoom and focus inputs. NOTE Most focus servos require a modification, please consult factory. 3. If the zoom lens is a CCTV type lens, it must be wired to match the Pan/Tilt. See Section 5.0, 9 Pin D Type for Pan/Tilt/Zoom/Focus output configuration. Some lens modification packages are also published or supplied with unit, please consult factory. 4.6 End Stop Setting NOTE If desired, Pan/Tilt adjustment can be accomplished manually by rotating belt/pulley on motor output shaft by hand. See Figure 9. IMPORTANT If manually adjusting end stops, power to the unit should not be applied. To adjust end stops for Tilt Function: A. Remove Tilt Chassis cover or use End Stop Adjustment access holes. (See Figure 8) 10

13 B. Reposition cradle against the stop to be adjusted (electrically or manually). C. Insert (.050 ) hex key through pot mounting plate access hole into activator end stop set screw that is visible through plate hole and loosen set screw (see Figure 9). D. With hex key engaged in end stop reposition cradle to desired tilt stop location (electrically or manually). E. Tighten set screw at final tilt stop location. Do not overtighten set screw. F. Repeat procedure for other activator end stop. G. Replace cover or reinstall plugs. TILT DRIVE BLOCK ASSY. PAN DRIVE BLOCK ASSY. PT-LP Figure 8 End Stop Setting 11

14 Tilt End Stops (Plate Removed) Timing Pulley 48 Groove Tilt Limit Switches Pot Mounting Plate Motor Mounting Plate Timing Pulley 24 Groove Tilt Motor and Gearbox Assembly Figure 9 Drive Block Assembly 12

15 To adjust end stops for Pan Mode: A. Locate pan stop actuators (See Figure 8). B. Pan unit left to desired stop location. (If stop actuates before desired location is reached, loosen stop and move it.) C. Stop actuators are moved by loosening the screw and rotating the actuators around the radius of the stop mounting groove. Do not overtighten lock screw; it does not have to be tight to hold the stop in the proper location. NOTE Be sure that there is clearance between the stop and the fixed housing assembly when done locking the stop in place. The stop must not drag during operation. D. Once the unit is at the desired location, move appropriate stop up against the switch actuator and lock in place. Do not overtighten. E. Repeat above procedure for opposite (right) pan direction. F. Run unit through entire pan range and confirm that both stop locations are correct and that the stops do not bind. 13

16 4.7 Operational Check At this point the camera and teleprompter should be mounted on the Pan/Tilt Head. Power up the camera and power the Pan/Tilt as described in Energizing Head 4.2. Perform the following checks: 1. Move the pan joystick left. The camera should move to the left of the scene as viewed on a picture monitor. 2. Move the pan joystick right. The camera should move right. The amount of angular deflection on the joystick determines the velocity of the Pan/Tilt. Releasing the joystick will stop movement. 3. Move the tilt joystick down (toward the operator). The camera should move down on the scene. 4. Push the tilt joystick up (away from the operator). The camera should move up on the scene. Again, angular deflection determines velocity. 5. Move the zoom joystick up (away from the operator) or turn the zoom knob clockwise (CP-RMQ-3A). The lens should zoom to telephoto. 6. Move the zoom joystick down (toward the operator) or turn the zoom knob counterclockwise (CP-RMQ-3A). The lens should zoom to wide. 7. Move the focus joystick side to side. The focal length of the lens should change (Left =, Right = Near). Again, angular deflection determines the velocity of zoom and focus. (Note: For the CP-RMQ-3A control panel, turn the focus knob in either direction; clockwise =, counterclockwise = near.) 8. Check full range of pan and tilt motion. Ensure that there is no interference between camera and teleprompter, cables and mounting equipment. If there is interference, readjust end stops accordingly. (See Section 4.6) 14

17 5.0 CONNECTOR INPUT/OUTPUT SIGNALS Controls 9 Pin D Type 1 No Connection 2 TX Data (From P/T) 3 RX Data (to P/T) 4 No Connection 5 Ground 1 TX Data + (From P/T) 2 TX Data - (From P/T) 3 RX Data - (to P/T) 4 RX Data + (to P/T) 5 Ground RS-232 RS-422 Power 6 Pin XLR Type 6 No Connection 7 No Connection 8 No Connection 9 No Connection 6 No Connection 7 No Connection 8 No Connection 9 No Connection Pin Assignment Mating View of Bulkhead 6 Pin XLR Male 1 +24VDC 2 +24V Return 3 +24VDC (Televator Option) 4 +24V Return (Televator Option) 5 +15VDC (Cam Power Option) 6 +15V Return (Cam Power Option) 15

18 Lens 12 Pin Male Type 1 Focus Mode 2 Zoom Mode 3 Ground 4 Iris/Cam Loc 5 Iris Cont 6 Zoom Ref. (Non-teleconferencing Lens Only) 7 Lens Ref or (Focus Ref. Nonteleconferencing Lens) 8 Focus Control Signal 9 Zoom Control Signal 10 Iris Mode 11 Zoom Follow Pot 12 Focus Follow Pot Lens 9 Pin D Type 1 No Connection 2 Zoom Drive 3 Focus Drive 4 Zoom/Focus Motor Return 5 Ground (Pots) 6 +12V (Pots) 7 Zoom Pot 8 Focus Pot 9 No Connection Lens 4 Pin DIN Type 1 Zoom/Focus Motor Return 2 No Connection 3 Focus Drive 4 Zoom Drive 16

19 Pin Assignment Optional Televator Connector 8 Pin DIN Type Mating View of Bulkhead 8 Pin DIN Female 1 Televator - 2 No Connection 3 Televator + 4 No Connection 5 +5VDC (Positional Option) 6 GND (Positional Option) 7 ENC (A) (Positional Option) 8 ENC (B) (Positional Option) Optional Camera Power Connector 4 Pin XLR Type Pin Assignment Mating View of Bulkhead 4 Pin XLR Female 1 +15VDC 2 +15VDC 3 +15V Return 4 +15V Return 17

20 APPENDIX A Telemetrics Serial Data Protocol Telemetrics provides for serial control of many of our camera control products. This summary briefly describes the protocol for serial control of these devices. In the summary, the Telemetrics controlled device will be referred to as the controller and the device commanding the controller will be referred to as the host. Control is accomplished by sending commands consisting of ASCII characters terminated by an ASCII carriage return (<CR>, hex 0D). In most cases, several commands may be sent together on the same line before sending the <CR>. However, in the case of the recall preset command, other commands may precede it but any commands following it on the same line are ignored. A command line will not be executed until the <CR> is received. ASCII backspace (<BS>, hex 08) can be used to correct errors in the command line. After the command line has been executed, a <CR> will be sent back to the host to acknowledge completion. Communication rate is 9600 BAUD. Protocol is 8 data bits, one stop bit, and no parity. Each command consists of either one or two letters, followed by any numerical parameters needed for the command. (Note: The commands are CASE SENSITIVE.) Numerical parameters are specified by the string of ASCII digits representing the decimal value. For example, a value of 26 is sent as a 2 followed by a 6, (i.e., hex 32, hex 36). Where a command has more than one parameter, the parameters should be separated by a space. No other spaces are necessary, though they may be used if desired. Important Note: In cases where the host does not monitor responding carriage returns from the controller, the host will not know whether a command line has been completed. The controller can receive new commands while it is processing previous commands except when the controller is processing a preset position recall. During a preset recall, all incoming characters are ignored except for an ASCII cancel character (<CAN>, control-x, hex 18) which tells the controller to abort the recall. Therefore, the host should send a <CAN> preceding all command lines. This way, if a recall was in progress, it will be aborted and the controller will accept the command. If no recall was in progress, the <CAN> will be ignored. The remainder of this summary describes the general methods for serial camera control. Commands will be introduced as they are needed. Note that while examples are shown enclosed in single quotes, only the characters within the quotes are to be sent; the quotes are simply for clarity. In addition, the examples may use unnecessary spaces for clarity, which need not be used for the actual application. 18

21 Manual Camera Motion The procedure for manually moving a camera is as follows: Reset motion voltages with the R command. Select and enable the camera with an L command. Move the camera using P, T Z and F commands. Disable the camera with an L command. The following 2 sections discuss the commands used. Camera Selection and Enable The L command is used to select and enable cameras. It has a single numerical parameter which corresponds to bits that are used to control switching of the cameras. A pair of bits is used to switch control to a given camera, and another bit determines whether that camera is enabled for motion. The following table shows the selections performed by the L command: Disabled Enabled Select Camera 1 L 0 L 1 Select Camera 2 L 4 L 5 Select Camera 3 L 8 L 9 Select Camera 4 L 12 L 13 Camera Control Voltages Camera motion is controlled by four voltages corresponding to the velocity of pan, tilt, zoom and focus which are set using the P, T Z and F; commands respectively. (An X command is also available to control the trolley, if used.) The commands have a single numerical parameter determining the voltage to which the output is set. The value of the parameter is in the range of 0 to A parameter value of is the point at which no motion occurs. As the value moves away from 16383, the speed of motion increases, and the direction of motion is determined by whether the value is greater or less than as follows: Command < Less than > Greater than P Pan Right Left T Tilt Down Up Z Zoom In (Tele) Out (Wide) F Focus Near Far X Televator Televator Down Televator Up 19

22 In addition, the R command, which has no parameters, will reset all four control voltages to the no motion value. This is useful to use before enabling a camera to ensure that no motion will occur when it is first enabled. There are many methods for determining control voltages. For instance, a joystick can be used and the value it outputs converted to the range 0 to for control voltages. Another example is with buttons. Each function has two buttons, one for each direction of motion (i.e. pan left and pan right). When a button is pressed, the camera is enabled. Initially the control voltage for the function is set for slow movement. Then the longer the button is held down, the faster the camera moves. If there is limited processing ability, button control can be done with simple on/off type control where pressing a button moves the corresponding function at a fixed speed. Preset Position Control NOTE: Due to heavy filtering of the position feedback voltages, proper preset storage requires that the desired camera be selected for at least ¼ second before the camera position is read. This delay allows the position voltages to stabilize through the filters before the preset position is read and stored. The host programming must ensure that this delay is present. For applications where the user must first select the camera then choose a preset, the human delay between these actions is sufficient to allow the filter to stabilize. Therefore, no programmed delay is necessary. There are 64 preset positions, numbered 0 to 63, available in the controller s nonvolatile memory. The information stored in a preset location does not include the camera to which the preset corresponds. Therefore, it is up to the host application to select the proper camera to be used prior to preset operations. The Telemetrics CP- RMQ-S control panel divides the presets into four groups of 16 shots, one group per camera. Positions 0 to 15 correspond to shots 1 to 16 for camera 1, positions 16 to 31 are shots 1 to 16 for camera 2, 32 to 47 for camera 3 and 48 to 63 for camera 4. The normal method for preset control is as follows: Select camera using an L command, delay ¼ second. Read and store preset position with the E command. Select camera using an L command. Recall position using the C command. * If necessary as described in note above. The host can also store presets in its own memory by reading the position of the camera and using a variant of the recall command to recall the position: Select camera using an L command, delay ¼ second. Read position using p, t, z, and f commands. Store data reported by controller. 20

23 Select camera using an L command. Recall position using CX command with stored data. * If necessary as described in note above. There are two additional commands related to presets. The e command, whose parameter is a preset number, which reports to the host the position data stored in that preset number, in pan, tilt, zoom, focus order. The EX command is a variant of the enter command. It stores external data in the controller s preset storage. Its first parameter is the preset number in which to store the data, followed by the four position data to be stored, in pan, tilt, zoom, focus order. The detailed descriptions of preset related commands follow in the next three sections. Preset Storing Commands The E command stores the position of the currently selected camera. Its single parameter is the preset number into which to store the position. As indicated earlier, it is important to ensure that the camera has been selected for at least ¼ second prior to sending the E command. For example, to store the current position of camera 2 into preset number 23: L 4 <CR> Wait ¼ second. E 23 <CR> The EX variant of the enter preset command allows host supplied data to be stored into a preset. The first parameter of this command is the preset number into which to store the data. This parameter is followed by the four position data corresponding to pan, tilt, zoom and focus to be stored into the preset. These data are all in the range of 0 to They are actually 12 bit two s complement values. Consequently, the range is to 2047, which when viewed as unsigned numbers would progress from 2048 to 4095, then 0 up to All position data for the controller are in this format. In most installations, the 0 position is approximately the center position of the full range of motion of a given function. Positive values (0 to 2047) are toward the left for pan and up for tilt. Lenses vary as to which direction is which so data for the lens type used in the particular installation must be consulted if the application requires knowledge of the directions. Here s an example of this command: EX <CR> Stores a pan position of 123, tilt position of 456, zoom position of 789 and focus position of 10 into preset number 5. 21

24 Preset Recalling Commands The C command recalls the preset position stored in the preset number given as its parameter. As noted earlier in this document, once the controller begins a recall command, any commands remaining on the command line are ignored. While the recall is in progress, the only character that will be acted upon is the <CAN> character to abort the shot. If the controller receives a <CAN> while in the midst of a recall, the camera will stop where it is and processing will continue as though the camera had actually reached the shot. After the recall is complete, the controller responds with a <CR>. For example to recall the position stored in preset number 41 for camera three: L 8 C 41 <CR> The CX variant of the recall command allows position data to be supplied directly by the host. The command has four parameters corresponding to the pan, tilt, zoom and focus positions, respectively. These data are in the same range for position data as described in the previous section: CX <CR> Preset Position Data Reporting The e command, whose parameter is a preset number, sends back to the host the four position data stored in that preset number, in pan, tilt, zoom, focus order. These data are in the range for position data described earlier. For example, after externally entering the data in the example in the Preset Storing Commands section: Host sends: e 5 <CR> Controller responds: <CR> The p, t, z and f commands, having no parameters, read the current position of the pan, tilt, zoom and focus, respectively, for the currently selected camera. As with the E command, the camera must have been selected for at least a quarter second prior to reading these data to ensure that they have become stable. These data are also in the range for position data. For example, to read camera two: Host sends: L 4 <CR> Host waits ¼ second. Host sends: p t z f <CR> Controller responds: <CR> 22

25 Command Reference for Standard Receivers Syntax?<CR> Q Description Obtain command of controller in dual-host system. Release command of controller to other host. L <num.> Set camera control latch to value of <num.> to control enabling and disabling of cameras. P <control voltage> Set pan control voltage to <control voltage>. T, Z, F, X R p t, z, f Set tilt, zoom, focus, Televator control voltage, respectively, as in P command. Set all control voltages to no motion. Read pan position of currently selected camera. Read tilt, zoom, focus respectively, as in p command. C <preset num.> Move currently selected camera to position stored in <preset num>. CX <pan pos> <tilt pos> <zoom pos> <focus pos> Move currently selected camera to <pan pos>, <tilt pos>, <zoom pos>, <focus pos>. E <preset num.> Store position of currently selected camera in preset <preset num.>. EX <preset num.> <pan pos> <tilt pos> <zoom pos> <focus pos> Store <pan pos>, <tilt pos>, <zoom pos>, <focus pos> into preset <preset num.>. e <preset num.> Report position stored in preset <preset num.>. <CTRL>X Abort call. If no call was in progress, this command will simply be ignored. 23

26 APPENDIX B PAN/TILT SETUP FOR CP-RMQ-3A Every focus servo has to be calibrated individually to match the lens range. Therefore, to set up a Pan/Tilt for use with the CP-RMQ-3A set a PC to the following parameters (using a terminal program or any communication software setup): Baud Rate: 9600 Data Bits: 8 Stop Bits 1 Parity: N Flow Control: None Conversion: ASCII Communication: RS-232 Note: For more detail of our Serial Protocol, see Appendix A. Serial Pan/Tilt. (PT-LP, PT-HP-S, and CP-SRD) Connect the Serial Pan/Tilt directly to the PC serial port. 1. Type L1<CR> to enable Pan/Tilt. 2. Type!cal<CR>. (This command is case sensitive). The focus servo will move all the way in one direction, then move all the way in the opposite direction. At this point, the focus calibration is done and the Pan/Tilt is ready to accept commands from the CP-RMQ-3A Control Panel. Focus Positional Settings. Pan/tilt units that are controlled using the CP-RMQ-3A utilize a set of parameters to control the response of the focus control. The commands are: 1. to display the settings. The command will return two values. The first value is gain and the second value is tweak. 2. FG[VALUE] <CR> to modify the gain, where value is 0 to FT[VALUE] <CR> to modify the tweak, where value is ± The standard values are a gain of 5 and tweak of 30. COMMAND VALUE FG 5 FT 30 Note: If any of these values are modified (steps 1 and 2), a lens calibration needs to be performed (!cal). 24