SPECIAL SPECIFICATION 1332 Variable Message Sign Cabinet and Controller Replacement

Transcription

1 1993 Specifications CSJ , etc. SPECIAL SPECIFICATION 1332 Variable Message Sign Cabinet and Controller Replacement 1. Description. This Item shall govern for the furnishing and installation of Variable Message Sign Cabinets and Controllers with all necessary associated electronic devices and hardware in locations as shown on the plans, as detailed in accordance with this Special Specification, and as directed by the Engineer. 2. Material. General Requirements. The Contractor shall disconnect all cables and remove existing Variable Message Sign (VMS) cabinet and controller from an existing foundation and replace it with a new VMS cabinet and controller at locations as shown on plans. The new cabinet and controller shall be installed on the existing foundation. The new cabinet and controller shall be by the same manufacturer as that being removed (Mark IV Industries Limited). All disconnected cables shall be reconnected to the new cabinet and controller and the new cabinet and controller made fully operational with the TransGuide system and the VMS that it operates. The Contractor shall dispose of the removed Cabinet and Controller. All foreign matter (dirt, silt, etc.) shall be removed from ground boxes and conduit associated with the VMS cabinet. All materials furnished, assembled, fabricated or installed under this Item shall be new, corrosion resistant and in strict accordance with the details shown on the plans and as detailed in this Specification. All new equipment shall be fully compatible with existing software and hardware. Equipment to be furnished at VMS field site shown on the plans shall include, but not be limited to the following: - VMS Controller (Sign Controller) - VMS Cabinet with all internal components - Telephone voice communications type line circuit with telephone jack and wall telephone (2554) shall be provided for voice communication. 3. Sign Controller. The sign controller shall be a software-oriented microprocessor and shall be provided with resident software stored in non-volatile memory. EEPROM of sufficient size to hold 12 messages and a test pattern shall be provided in the VMS sign controller. The sign controller shall be designed for fail-safe prevention of improper information display in the case of a system malfunction

2 Failure of any sign shall not affect operation of any other sign in the system. The sign controller shall be 19 in. rack mountable. The controller shall consist of the following: Local control panel status indicators, including: - power on/off - communications status Shutter Power Supply Module Power Supply Module (Rack) Central Processor Module Shutter Driver Module(s) Lamp Control Module(s) The rack shall include an inter-pcb (printed circuit board) connection bus carrying signals and power, onto which all PCB s are connected. Connections from the controller shall be accomplished via industry standard, keyed type connectors with a retaining mechanism. The VMS field controller shall provide maintenance personnel with a clear visual indication of VMS sign lamp status at the ground mounted field controller, without having to plug in a portable notebook microcomputer, or contact TransGuide Operations Control Center. Light emitting red/green status indicators shall be installed on the VMS controller front panel. The indicators shall provide information on sign lamp status, regardless of whether or not the sign is displaying a message. The indicators shall provide precise information as to the exact location, on the sign, of any non-functioning lamp. (1) Sign Controller Cabinet. The controller cabinet shall be located as shown on the plans and shall contain the following subassemblies: Outer key lockable, protective enclosure Inner key lockable, non-vented enclosure Sign controller Local control panel 19 in. rack Communication equipment and a transient voltage surge suppressor (TVSS) Power supply and power distribution Lamp driver system Photoelectric controller devices Internal cabinet lighting Internal cabinet heating, as required by the plans Phone Jack The controller cabinet and its sub-assemblies shall be designed for continuous operation over an outside temperature range of 13 F to +149 F without requiring fans or heaters. (a) Protective Enclosures. The controller cabinet shall be of the double enclosure type specified below:

3 The cabinets shall be constructed using unpainted aluminum with a minimum thickness of in. No wood, wood fiber products, or other flammable material shall be used in the cabinet. All welds shall be neat and of uniform consistency. The cabinet shall be completely weatherproofed to prevent the entry of water. All unwelded seams shall be sealed with a clear or aluminum colored weather-seal compound. The external enclosure shall be fitted with louvers ensuring natural cooling. The inside enclosure shall comply with the NEMA type 3S standard (IEC 55). Both internal and external enclosures shall be fitted with Corbin 2 lockable access doors. Locks shall be keyed alike. The external cabinet shall be base mounted on the existing concrete foundation, as detailed on the plans. The transformer supplying power to the lamps shall be housed inside the external cabinet outside the internal cabinet enclosure. (b) Main Power Supply and Energy Distribution. The controller shall be designed for use on the following: Power Line Voltage - 120VAC Nominal - the system shall operate within a voltage range of 95VAC to 135VAC. Frequency - 60Hz +/- 3Hz Under normal operation, the drop in voltage between no load and full load of the sign and its controller shall not exceed 10% of the nominal voltage. The power required for sign operation shall not exceed the following: 100 watts for the controller cabinet 50 watts (one lamp) for every 3 characters in day mode or 100 watts in overbright mode for the nominal 12 in. or 18 in. character height 50 watts (one lamp) for every 6 characters in day mode or 100 watts in overbright mode for the nominal 8 in. character height 1800 watts for thermostatically controlled heat strips on faceplates Power protection shall be provided by a thermal magnetic circuit breaker associated with a 300 ma ground fault circuit interruption (GFCI) device. A GFCI device shall be installed on all service outlets. The system shall also be protected by a transient voltage surge suppressor (TVSS). (c) Lamp Drive System. The system providing power to the lamp(s) shall consist of the following:

4 A transformer to supply voltage to the lamps. The transformer shall be equipped with taps enabling voltage adjustment to correct input voltage and compensate for the voltage drop between the controller cabinet and the sign. Relays for switching between the "day" and "night" light output levels. A static "on/off" relay, which shall control overall extinguishing of the sign lamps (see Lamps Test section). Protection against overcurrent and short-circuits at the transformer secondary level. Relays for the above shall be "Solid State" relays when possible. Static discharge protection shall be provided for all relays. (d) Sign Controller Communication Interface. The sign controller shall include 2 separate EIA RS-232D serial interfaces for communication with the VMS Master Controller and a notebook computer. One EIA RS-232D serial interface shall drive asynchronous modems or DSUs for full duplex communication with the VMS Master Controller over dial up lines or on a multi-drop network. Switching between dial-up and multi-drop operation shall not require software modification. For dial-up operation, the Contractor shall acquire and bear the charges of installing and connecting the dial-up telephone line. The Contractor shall provide all needed modems. A cable for communications between a notebook computer and the second EIA RS- 232D serial interface shall be permanently installed inside the sign controller cabinet. The communications cable shall be easily accessible when the cabinet door is open. (e) Photoelectric Sensor Devices. Two fully adjustable photoelectric switches shall be provided with each controller. One switch shall change between "DAY" and "NIGHT" light intensity levels, and the other shall control the "OVERBRIGHT" light intensity level. (f) Lighting. A fluorescent lamp shall be used to illuminate the internal controller cabinet when the cabinet door is opened. The lamp shall be extinguished when the cabinet door is closed. (g) Voice Communications. A telephone jack shall be provided at a location inside the cabinet at the same location as that in the removed cabinet. A telephone headset with microphone and a 50 ft. coiled cord shall be stored in a convenient location in the cabinet as approved by the Engineer. The headset shall have sound dampening earphones and a hands-off operation. (2) Sign Controller Functions. The sign controller shall be controlled from the VMS Master Controller or a notebook computer, which shall specify the appropriate display. The sign controller and its software shall perform the following functions: A. Display a message, including:

5 (1) Static messages (2) Flashing messages (3) Alternating messages It shall be possible to separately vary the flashing and alternating frequency. The flashing frequency shall vary between 0.3 and 2 seconds in 0.1 second increments. The alternating frequency shall vary between 0.5 and 8 seconds in 0.5 second increments. B. Report errors and failures, including: (1) Data transmission error (2) Receipt of invalid data (3) Communications failure recovery (4) VMS sign controller failure (5) Power recovery (6) Lamps status C. Message and status monitoring: The sign controller shall transmit a return message to the VMS Master Controller whenever it receives a valid transmission. The return message shall contain the following: (1) Address of the sign controller (2) Message being displayed (3) Current sign illumination level (4) Contents of any message stored in memory when requested (5) Local Control Panel switch position (Master or Local) (6) High Occupancy Vehicle (HOV) Panel switch position (Master or HOVL) D. The sign controller shall blank any message displayed in the event of power or sign controller failure. E. Out-of-service lamps shall be detected by the sign controller and reported to the VMS Master Controller. F. Switching from the "primary lamp" to the "backup lamp" (and vice versa) shall be automatic in the event of failure. G. If a primary lamp and the associated backup lamp are both not operational, the controller shall turn off the entire sign. H. In the event that a lamp does not turn off on command, the controller shall automatically turn off the lamp power supply. I. The sign controller shall turn off the lamps during sign erasure and writing periods and when the sign is blank

6 J. When the display time of a message has expired, the controller shall set the sign to neutral. A sign is considered to be neutral when the sign is blank or a default (predefined) message in sign controller memory is displayed. K. In the event of a communications failure with the VMS Master Controller, the sign controller shall set the sign to neutral after a user-defined number of minutes unless communications have been restored within this period. This function shall apply only when the sign controller is in the Master Control mode. L. The VMS sign controller shall have 12 messages and a test pattern stored in EEPROM. The VMS sign controller shall be capable of displaying the EEPROM message indicated by the rotary switch on the Local/HOVL Control Panel when in LOCAL or HOVL mode. M. The VMS sign controller shall be capable of directing a test pattern which will exercise each element in the sign from the rotary switch on the Local/HOVL Control Panel or from a command from the VMS Master controller. N. The VMS sign controller shall, at user programmed time intervals, activate all the shutters. This procedure shall be used as a self-maintenance feature. O. The VMS sign controller shall be capable of reprogramming the messages stored in the EEPROM. (a) Message Loading. The Contractor shall load the initial EEPROM message libraries at both the VMS Master Controller and the VMS sign controllers. The messages to be placed in these libraries shall be furnished by the Engineer. It shall also be possible to write and download messages to the EEPROM libraries from the VMS Master Controller. (b) Lamp Control. The sign controller shall turn off the lamps during sign erasure and writing periods and when the sign is blank. Flashing of a message shall be controlled by turning the lamps on and off at a programmed speed. (3) Modes of Operation. The mode of operation determines which level of control governs the VMS message selection. The 3 modes of operation are: Master - the VMS Master Controller determines the appropriate message or test pattern. Local - the local control panel rotary switch or notebook computer is used to determine the appropriate message or test pattern. HOVL - the HOV Lane Control Panel rotary switch determines the appropriate message or test pattern. (For HOV Lane VMS only) (a) Local Control Panel. There shall be a Local Control Panel in the sign controller cabinet. The panel shall have waterproof switches for the following functions:

7 Control mode - determines the VMS mode of operation (Master or Local). Message selection - rotary switch to select a blank message or any 1 of the EEPROM Messages stored in the VMS sign controller when Control mode is set to Local. Message Implementation - a push button switch to activate the message selected. Test - when in the Local mode of operation, activates the test pattern. For non-hov lane VMS, the mode of operation is determined by the position of the mode switch on the local control panel. If the switch on the local control panel is set to "Local," the mode of operation is local. Otherwise, the mode of operation will be Master. (4) Safety of Operation. (a) Lamps Test. Primary mode - All "primary" lamps are operational. Backup mode - If a primary lamp is found not to be operational, the controller shall automatically turn on the associated backup lamp. If a primary lamp and the associated backup lamp are both not operational, the controller shall turn off the entire sign to prevent the display of an incomplete message. Abort - In the event that a lamp does not turn off on command, the sign controller shall automatically switch off the lamp power supply. This "Abort" function shall also be controlled by the VMS Master Controller. (b) Primary Input Power Interruption. All VMS Equipment shall meet all of the requirements in Section "Power Interruption" of the National Electrical Manufacturers Association (NEMA) Standard TS for Traffic Control Systems or latest revision. (c) Power Service Transients. All VMS Equipment shall meet all of the requirements in Section "Transients, Power Service" of NEMA Standard TS or latest revision. (d) Communications Link Failure. In the event of a communications failure with the VMS Master Controller, the sign controller shall set the sign to neutral after a defined number of minutes as determined by the Engineer, unless communications have been restored within this period (whatever the remaining display time). The function described above shall apply only when the sign controller is in the Master Control Mode

8 (5) Communications with VMS Master Controller. The sign controller shall be addressable by the VMS Master Controller via the communications system and shall be in accordance with Special Specification, National Transportation Communications for ITS Protocol for Dynamic Message Signs. Protocol changes may be accomplished by changes to firmware, as needed. Each VMS sign controller shall be provided with error detection and reporting features, which shall be utilized to guard against incomplete or inaccurate transmission. These shall include: A. Redundancy checking of all data received from the VMS Master Controller, with positive acknowledgement for all transmissions. B. Status monitoring for communication line malfunction or break. C. Content validation of all received transmissions for logic or data errors. The communication line circuits shall be point-to-point or multi-point and shall be full duplex asynchronous data transmission at a minimum of 9,600 bps. The Contractor shall provide necessary modems or DSUs at each location. Each sign controller shall be assigned an address unique within the circuit to which the sign is connected. All data transmitted between the VMS Master Controller and the VMS sign controller shall be encoded in the ASCII representation using 1 start bit, 7 data bits, 1 parity bit, and 1 stop bit. Parity shall be even. All data transmissions shall be of the form: Where: : SOH : ADR : Type : Content : LRC : ETX : SOH = ASCII start of header character ADR = selected controller address character Type = identifier for type of transmission Content = information as appropriate to type of transmission (possibly null) LRC = Longitudinal redundancy check character, consisting of the modulo-128 sum of the 7 data bits in all preceding characters in the transmission (including SOH), with proper even parity. ETX = ASCII end-of-text character The sign controller shall acknowledge all transmissions from the VMS Master Controller. A negative acknowledgement shall be sent if a parity, LRC, or data content error is detected; a positive acknowledgement shall be sent if no error is detected. Any variations to the above requirements shall be submitted in writing for written approval by the Engineer

9 (6) Description of the Various Commands. As a minimum, the following commands shall be available at the sign controller: A. Display command from the VMS Master Controller (Master Control Mode). B. Display command from a notebook computer (Local Control Mode). C. Sign Status request - This command shall provide a report concerning the: Sign appearance (lit, blank or neutral) Lamp operating mode (primary/backup/abort) Mode of the displayed message (local/hovl/master) Status of the photoelectric sensors Light output level (day/night/overbright) Sign number, location, or ID D. Lamp status request - This command shall provide an instantaneous indication of the status of all the primary and backup lamps (operational/non-operational). E. Day/Night switching command F. Overbright command G. "Abort" command H. Sign off command (set to neutral or blank-out) I. Echo command - This command shall provide a report concerning the message currently displayed by the controller (texts, display parameters, remaining display time, received or memory resident messages). J. Simulation Command - This command shall turn off lights but controller continues to function in simulators. (7) Message Display Time. For each message, the operator shall be able to define either a display time in minutes (maximum 65,000 minutes), or an unlimited display time. For alternating messages, the operator shall be able to select a display time for each message and the blank-out time between the 2 messages in 0.5 second increments (from 0.5 second to 8 seconds). (8) Communications with the Transguide Operations Control Center Computer Network. From the VMS Master Controller, the operator shall be able to select TMS Control Mode for a sign. The TMS Control Mode shall allow the TransGuide Operations Control Center Mainframe to take over or release the message selection control of a sign or signs at any time during this mode. When the TransGuide Operations Control Center Mainframe releases the message selection control of a sign or signs, the VMS Master Controller shall return each sign to its previous operation status

10 The status of each sign shall be stored on hard disk. Following a power restoration, the VMS Master Controller shall restore each sign to its previous status without operator intervention. 4. Construction Methods. (1) General. The equipment design and construction shall utilize the latest available techniques with a minimum number of different parts, subassemblies, circuits, cards and modules to maximize standardization and commonality. The equipment shall be designed for ease of maintenance. All component parts shall be readily accessible for inspection and maintenance. Test points shall be provided for checking essential voltages. (2) Electronic Components. All electronic components shall comply with Special Specification, "Electronic Components". (3) Mechanical Components. All external screws, nuts, and locking washers shall be stainless steel. No self-tapping screws shall be used unless specifically approved by the Engineer. All parts shall be made of corrosion resistant materials, such as plastic, stainless steel, aluminum or brass. All materials used in construction shall be resistant to fungus growth and moisture deterioration. Dissimilar metals shall be separated by an inert dielectric material. (4) Documentation. Sufficient documentation shall be provided to reflect "as-built" conditions and to facilitate operation, maintenance, modification, and expansion of the system or any of its individual components. Manufacturer supplied documentation which covers the intent of this requirement may be used, subject to the approval of the Engineer. (a) Submittal Documentation. Each applicable equipment item or component shall be documented in a manual and submitted to the Engineer for approval. Five copies of the manual shall be required. The manual shall include the following information: (1) A general description of the equipment including all information necessary to describe the basic use or function of the system components. This shall include a general "block diagram" presentation of the equipment. Where auxiliary equipment is required, tabular charts shall be included, listing such equipment. These charts shall include the nomenclature, physical and electrical characteristics, and functions of the auxiliary equipment unless such information is contained elsewhere in an associated manual. In the latter case, a reference shall be made to the location of the information pertaining to the auxiliary equipment. (2) The theory of operation of the system components in a clear, concise manner supported by simplified schematics, logic, data flow diagrams, one-function diagrams, etc. Timing and waveform diagrams, and voltage levels shall be shown as required. A logical development shall be used starting with a system block level and proceeding to a circuit analysis. Circuit analysis shall be detailed whenever circuits are not normally found in standard text books. The

11 application of new theoretical concepts shall be fully described. Where the design allows operation in a number of different modes, an operational description of each mode shall be included. (3) In simple, clear language, the routine of operation, from necessary preparations for placing the equipment into operation, to securing the equipment after operation. This section shall contain appropriate illustrations, with the sequence of operations presented in tabular form wherever feasible. This section shall also contain a list of applicable test instruments, aids and tools required in the performance of necessary measurements and techniques of each system component. In addition, set-up test, and calibration procedures shall be described. (4) The manufacturer's recommended procedures and checks necessary for preventive maintenance. This shall be specified for pre-operation, weekly, monthly, quarterly, semi-annual, annual, and "as required" checks as necessary to assure reliable equipment operation. Specifications, including tolerances, for all electrical, mechanical, and other applicable measurement, adjustments, or both, shall be listed. (5) Data necessary for isolation and repair of failures or malfunctions, assuming the maintenance technicians to be capable of analytical reasoning using the information provided in this specification. Accuracies, limits, and tolerances for all electrical, physical or other applicable measurements shall be described. General instructions shall be included for disassembly, overhaul, and reassembly, including shop specifications or performance requirements. (6) Detailed instructions shall be given only where failure to follow special procedures would result in damage to the equipment, improper operation, danger to operating or maintenance personnel, consumption of excessive manhours, etc. Such instructions and specifications shall be included only for such maintenance as may be accomplished by specialized technicians and engineers in a modern electro-mechanical shop. The instructions shall describe special test setup, component fabrication, the use of special tools, jigs, and test equipment. (7) A detailed physical description of size, weight, special mounting requirements, electrical connections, and all other pertinent information necessary for proper installation and use of the equipment shall be provided. (8) The parts list shall contain all information required to describe the characteristics of the individual parts, as required for identification. It shall include a list of all equipment within a group and list of all assemblies, subassemblies, and replacement parts of units. The tabular arrangement shall be in alphanumerical order of the schematic reference symbols and shall give the associated description, manufacturer's name, and part number. A table of contents or some other convenient means, e.g., appropriate grouping, shall be provided for the purpose of identifying major components, assemblies, etc

12 (9) Schematic diagrams shall be complete and accurate as required to supplement the text material and to allow the books to be a self-contained technical information source. Maximum size of these diagrams should be limited to allow their use in close proximity of the equipment, in the classroom, etc., part reference symbols, test voltages, waveforms, and other aids to understanding of the circuit's function shall be included on the diagrams. Test voltages, waveforms, and other aids to understand the circuit's function may be shown on either the simplified schematics and other drawings (as required in the above sections) on theory of operation or maintenance or on the schematic diagrams required for this section. The overall scope of information shall not be less, however, than that stated for the schematic diagrams. (b) Final Documentation. Final documentation shall reflect all change orders and software modifications and shall be provided before installation. Final documentation shall be approved before final system acceptance has begun. This documentation shall include drawings of conduit layouts, cable diagrams, wiring lists, cabinet layouts, wiring diagrams and schematics for all elements of the communications system. This shall also include detailed drawings identifying by cable type, color code and function, the routing of all conductors (pairs) in the communications system. Upon completion of the installation, the Contractor shall submit these plans, maps, and/or drawings to reflect an as-built condition, incorporationg all changes made during installation, such as in pair identification and routing. (5) Technical Assistance. The Contractor shall ensure that a manufacturer's representative is available to assist the Contractor's technical personnel at each cabinet/controller installation site. The manufacturer's representative shall provide technical assistance in following area: Sign Controller/Cabinet installation 5. Testing Requirements. It is the policy of the Department to require performance testing of materials and equipment not previously tested and approved. If technical data are not considered adequate for approval, samples may be requested for testing by the Engineer. The contract period will be not extended for time lost or delays caused by testing prior to final Department approval of any items. The equipment covered by this Specification shall be subjected to design approval tests and factory demonstration tests (FDT) at the equipment manufacturer's facility to determine conformance with all the Specification requirements. The Engineer may accept certification by an independent testing lab in lieu of the design approval tests, to verify that the design approval tests have previously been satisfactorily completed. The Contractor shall arrange for and conduct the tests in accordance with the testing requirements stated herein. Unless otherwise specified, the Contractor is responsible for satisfying all inspection requirements prior to submission for the Engineer's inspection and acceptance. The Engineer reserves the right to witness all design approval tests and factory demonstration tests. The results of each test shall be compared with the requirements

13 specified herein. Failure to conform to the requirements of any test shall be counted as a defect, and the equipment shall be subject to rejection by the Engineer. Rejected equipment may be offered again for a retest, provided that all non-compliances have been corrected and retested by the Contractor and evidence thereof submitted to the Engineer. The tests on all or 1 type of equipment must be completed within 5 days. Any delays in performing all these tests will result in the Contractor paying the additional costs of providing the Engineer's representatives for the additional testing. Final inspection and acceptance of equipment shall be made after installation at the designated location as shown on the plans, unless otherwise specified herein. All tests shall be performed in the continental United States. (1) Test Procedures. The contractor shall provide 5 copies of all design approval, factory demonstration, stand-alone and subsystem test procedures and data forms for the Engineer s approval at least 60 days prior to the day the tests are to begin. The test procedures shall include the sequence in which the tests will be conducted. The test procedures shall have the Engineer s approval prior to submission of equipment for tests. The contractor shall furnish data forms containing all of the data taken, as well as quantitative results for all tests. The data forms shall be signed by an authorized representative (company official) of the equipment manufacturer. At least 1 copy of the data forms shall be sent to the Engineer. (2) Design Approval Tests. Design approval tests shall be conducted by the Contractor on 1 or more samples of equipment of each type, as approved by the Engineer, to determine if the design of the equipment meets the requirements of this Specification. The test shall be conducted in accordance with the approved test procedures as described in this specification. The Engineer shall be notified a minimum of 30 calendar days in advance of the time these tests are to be conducted. The design approval tests shall cover the following: (a) Temperature and Condensation. The field equipment shall be successfully performed under the following conditions in the order specified below: A. The equipment shall be stabilized at 13 F. After stabilization at this temperature, the equipment shall be operated without degradation for 2 hours. B. Moisture shall be caused to condense on the equipment by allowing it to warm up to room temperature in an atmosphere having relative humidity of at least 40% and the equipment shall be satisfactorily operated for 2 hours while wet. C. The equipment shall be stabilized at 149 F. After stabilization, the equipment shall be satisfactorily operated for 2 hours without degradation or failure. (b) Primary Power Variation. The equipment shall meet the specified performance requirements when the nominal input voltage is 115V ± 11.5V. The equipment

14 shall be operated at the extreme limits for at least 15 minutes during which the operational test of the FDT shall be successfully performed. (c) Relative Humidity. The equipment shall meet its performance requirements when subjected to a temperature of 149 F (65 C) and a relative humidity of 95%. The equipment shall be maintained at the above condition for 48 hours. At the conclusion of the 48 hour soak, the equipment shall meet the requirements of the operational test of the FDT within 30 minutes of beginning the test. (d) Consequences of Design Approval Test Failure. If the unit fails the design approval test, the design fault shall be corrected and the entire design approval test shall be repeated. All deliverable units shall be modified, without additional costs to the Department, to include design changes required to pass the design approval tests. (3) Demonstration Tests. The Contractor shall be responsible for conducting demonstration tests on all units at a facility within the metropolitan area. The Engineer shall be notified a minimum of 30 calendar days before the start of tests. All tests shall be conducted in accordance with the approved test procedure in this specification. Each equipment shall have passed the following individual tests: (a) Examination of Product. Each equipment shall be examined carefully to verify that the materials, design, construction, markings and workmanship comply with the requirements of the Specification. (b) Continuity Tests. The wiring shall be checked to determine conformance with the requirements of the appropriate paragraphs in the Specifications. (c) Operational Test. Each equipment shall be operated long enough to permit equipment temperature stabilization, and to check and record an adequate number of performance characteristics to ensure compliance with the requirements of this Specification. (d) Consequences of Demonstration Test Failure. If any unit fails to pass its demonstration test, the unit shall be corrected and another unit substituted in its place and the test successfully repeated. If a unit has been modified as a result of a demonstration test failure, a report shall be prepared and delivered to the Engineer prior to shipment of the unit. The report shall describe the nature of the failure and the corrective action taken. If a failure pattern develops, the Engineer may direct that design and construction modifications be made to all units without additional cost to the Department for extension of the contract period. (4) Stand-Alone Tests. The Contractor shall conduct an approved stand-alone test of the equipment installation at the field site. The test shall, as a minimum, exercise all standalone (non-network) functional operations of the field equipment with all of the equipment installed as per the plans, or as directed by the Engineer

15 Approved data forms shall be completed and turned over to the Engineer as the basis for review and rejection or acceptance. At least 30 working days notice shall be given prior to all tests to permit the Engineer to observe each test. If any unit fails to pass its stand-alone test, the unit shall be corrected or another unit substituted in its place and the test successfully repeated. If a unit has been modified as a result of a stand-alone test failure, a report shall be prepared and delivered to the Engineer prior to the retesting of the unit. The report shall describe the nature of the failure and the corrective action taken. If a failure pattern develops, the Engineer may direct that design and construction modifications be made to all units without additional cost to the Department or extension of the contract period. (5) System Tests. The Contractor shall conduct approved VMS system tests on the field equipment with the central equipment. The tests shall, as a minimum, exercise all remote control functions and display the return status codes from the controller for a minimum of 72 hours. Approved data forms shall be completed and turned over to the Engineer as the basis for review and for rejection or acceptance. If system tests fail because of any component(s) in the subsystem, the particular component(s) shall be corrected or substituted with other components(s) and the tests shall be repeated. If a component has been modified as result of the system test failure, a report shall be prepared and delivered to the Engineer prior to retesting. 6. Final System Acceptance. Final system acceptance shall be defined as when all work and materials provided for in this item have been furnished and completely installed by the Contractor, and all parts of the work have been approved and accepted by the Engineer and the Variable Message Sign System has been operated continuously for a minimum of 90 calendar days or as shown on the plans in a satisfactory manner as determined by the Engineer. 7. Requirements for Shop Drawings. The cabinet/controller supplier shall submit 5 copies of shop drawing for approval of the Engineer before fabrication. 8. References. The cabinet /controller manufacturer shall submit 3 references, preferably Texas Department of Transportation, that have been successfully operating a fiber optic variable message sign system manufactured by this manufacturer, for a period of no less than 1 year. Reference data shall include name and address of organization, and the name and telephone number of an individual from the organization who can be contacted to verify system operation. This information shall be provided prior to documentation submittal. Failure to furnish the above references will be sufficient reason for rejection of the manufacturer's equipment. A quality assurance program shall be in effect with the VMS cabinet/controller supplier providing proof of being ISO 9001 certified for the manufacturing of the Fiber Optic Variable Message Sign cabinet & controller. 9. Experience Requirements. Personnel involved in the installation and testing of the VMS Cabinet & Controller shall meet the following requirements:

16 1. Three years experience in the manufacturing, installation and testing of Fiber Optic Variable Message sign systems. 2. Two installed VMS systems where the system has been in continuously satisfactory operation for at least 2 years. The Contractor shall submit as proof, photographs or other supporting documents, and the names, addresses and telephone numbers of the operating personnel who can be contacted regarding the system. 3. One VMS system (which may be 1 of the 2 in the preceding paragraph) which the Contractor can arrange for demonstration to the Engineer. 10. Warranty. Equipment furnished and installed for this project shall be guaranteed to perform according to the manufacturer's published specifications. Equipment shall be warranted against defects and/or failure in design, materials and workmanship in accordance with the manufacturer's standard warranty. The Contractor shall assign, to the Department, all manufacturer's normal warranties or guarantees on all such electronic, electrical, and mechanical equipment, materials, technical data, and products furnished for and installed on the project. Defective equipment shall be repaired or replaced, at the manufacturer's option, during the warranty period at no cost to the Department. All equipment used on this project shall have no less than 95% of the manufacturer's standard warranty remaining on the date that equipment invoices are submitted by the Contractor for payment. Any equipment with less than 95% of its warranty remaining will not be accepted by the Department. 11. Measurement. Fiber Optic Variable Message Sign Cabinet & Controller shall be measured as each Fiber Optic Variable Message Sign Cabinet & Controller furnished, installed, made fully operational, and tested in accordance with these Special Specifications or as directed by the Engineer. 12. Payment. The work performed and materials furnished in accordance with this Item and measured as provided under "Measurement", will be paid for at the unit price bid for "Variable Message Sign Cabinet & Controller Replacement. This price shall be full compensation for furnishing, placing, and testing all materials and equipment, and for all tools, labor, equipment, hardware, supplies, support, shop drawings, documentation, and incidentals necessary to complete the work