SPECIAL SPECIFICATION 1672 ISDN Compressed Video Equipment

Transcription

1 1993 Specifications CSJ s & , etc. SPECIAL SPECIFICATION 1672 ISDN Compressed Video Equipment 1. Description. Furnish and install Integrated Services Digital Network (ISDN) Compressed Video Equipment (CVE) as shown on the plans and as detailed in accordance with these specifications. Provide all compression and decompression equipment from the same manufacturer and model. The specifications referenced in this Item are as follows: - Special Specification, "Electronic Components". - Special Specification, "Testing, Training, Documentation, and Warranty". - Special Specification, "CCTV Field Equipment". - Special Specification, "ISDN Network Termination Unit". 2. General. Provide CVE that is a state of the art digital transmission system capable of rapidly transmitting and receiving very high quality color video and integrated data and control information via an Integrated Services Digital Network (ISDN) line. (1) Functional Requirements. Provide compressed video equipment (field) that accepts video input, compresses and transmits compressed video images and controls video cameras in the field. Provide compressed video equipment (central) that decompresses incoming images, displays video outputs, and controls video cameras in the field. The camera functions to be controlled by the CVE are described in Special Specification, "CCTV Field Equipment". 3. Materials. Furnish, assemble, fabricate or install new, corrosion resistant materials in strict accordance with the details shown on the plans and in the specifications. Provide compressed video equipment (field) with the following minimum requirements: - CVE Encoder. - ISDN Network Termination Unit. - ISDN basic rate interface service drop (2B + 1D channels). Provide compressed video equipment (central) with the following minimum requirements: - CVE Decoder. - Central Setup Software. - ISDN Network Termination Unit. - ISDN Smart Shelf with embedded SNMP - ISDN basic rate interface service drop (2B + 1D channels)

2 4. Interface Requirements. (1) Video Signal. Provide CVE (field) that accepts via BNC terminal, as standard, a video input with a synchronization pulse amplitude between 0.2 and 0.4 volt peak to peak, a peak video amplitude with reference to the black level of between 0.5 to 1 volt, and for color systems, a minimum color burst level of 100 mv. Provide termination impedance of 75 ohms for the video input. Provide CVE (central) that provides via BNC terminal, as standard, a video output of 1 volt peak to peak, designed to drive a 75 ohm load, and capable of both color and monochrome video transmission (2) Communications. Communicate with the CVE via an EIA-422 synchronous interface with data rates externally clocked or programmable by the user up to 2 Mbps. Interface port with the ISDN Network Termination Unit specified in Special Specification, "ISDN Network Termination Unit". (3) RS-232 Interface. Provide CVE with (4) four RS-232/RS-422 bi-directional data channels that utilize the same communication link as the video. The data rate for the 4 channels will be programmable by the user up to 19.2 kbps each. Allocate the bandwidth of the data channels only if data is transmitted; else give full bandwith to the video transmission. Program the unit by way of the user interface software with 1 port. Control the camera and pan/tilt functions as described in Special Specification, "CCTV Field Equipment" with a second port. Remotely configure and monitor the ISDN ISU with a third port. Provide an auxiliary port for future use. 5. Operational Requirements. (1) Equipment Setup. Setup CVE using a laptop computer with the necessary software utilizing the programming port. Provide all cables required to connect the laptop to the CVE for setup. Supply 2 copies of the necessary setup software that is Windows NT compatible. (2) Equipment Operation. Connect the programming port at the central location permanently to the Transportation Management Server. Install 1 copy of the setup software on this server allowing the operators the ability to adjust the frame rate for the video. This adjustment would be necessary if a slower, but clearer picture is necessary from the CCTV camera. Use CVE with ITU-T H.261/H.263 encoding, and separate filtering and processing for luminance and chrominance signals. Support a maximum resolution of 720 X 625 and a maximum of 30 frames per second. (3) Equipment Diagnostics. Provide a CVE with an 80-character LCD display for diagnostic purposes. Display as a minimum the current data rate, quality level, frame rate, video status, and equipment temperature

3 6. Installation Requirements. (1) Physical Characteristics. Provide CVE with a 2 U rack enclosure with 2 units mountable side-by-side in standard 19 in. wide openings or a 1 U rack enclosure mountable in a standard 19 in. wide opening. In the case of the CVE (field) units, provide CVE capable of being mounted on a shelf without obstructing necessary air vents. (2) Cabling. Accommodate all power, video and control cabling at the rear of the CVE chassis. 7. Power Requirements. (1) Chassis Power Source. Operate CVE at 110 Volts AC, 60 Hz, or 8-28 Volts DC, 20 Watts (maximum). Ensure the transient voltages, surges and sags normally experienced on commercial power lines do not affect the equipment operations. Check the local power service to determine if any special design is needed for the equipment. The extra cost, if required, is subsidiary to this Item and will not be paid for directly. (2) Telephone Service Surge Protection. Provide individual telephone line surge protection for each telephone circuit installed in the field cabinet. Install this surge protection on the telephone interface panel, with direct connection to a ground rod. Ensure the connection does not degrade the data communication characteristics of the ISDN line. (3) Second Stage Power And Telephone Line Surge Protection. Supply a second stage of power and data line surge protection by 2 conventional computer power and modem surge protectors. These surge protector units shall each consist of 4 NEMA 5-15R AC receptacles and 2 RJ-11 modular jacks for data line input and output, combined in a case attached to a 3 conductor power cord. Provide AC surge protected circuits rated as follows: 15 amperes per socket. Transient suppression for up to 13,000 ampere spikes. Instantaneous response time. Initial clamping voltage of 140 volts AC RMS. Provide protection for all three modes: hot to neutral, hot to ground, and neutral to ground. Provide high energy noise suppression greater than 20 db at 50 khz, greater than 40 db at 150 khz, greater than 80 db at 1Mhz, and greater than 30 db from 6 MHz to 1,000 MHz

4 Provide data line surge protected circuit rated as follows: Clamping voltage of 200 Volts peak ± 10%. Response time of 5 nanoseconds. Peak transient input voltage of 6 kv, 10 microseconds. Connect each of the high speed modems to a separate surge protection unit and connect the power input for the CVE to 1 of the surge protection units. Provide surge protector with an on/off switch for AC power and backlight the switch to indicate the on position. (4) Primary Input Power Interruption. Meet all the requirements in Section 2.1.4, "Power Interruption," of the National Electrical Manufacturers Associations (NEMA) Standard TS for Traffic Control System, or the latest revision. (5) Power Service Transients. Meet the requirements of Section 2.1.6, "Transients, Power Service," of the NEMA Standard TS2-1992, or the latest revision. (6) Wiring. Meet the requirements of the National Electrical Code. Cut all wires to proper length before assembly. Do not double back wires to take up slack. Neatly lace wires into cable with nylon lacing or plastic straps. Secure cables with clamps. Provide service loops at all connections. Provide RG-59 type coaxial cable between the cameras and the CVE with a stranded center conductor, 100% shield coverage and a cellular polyethlene dielectric. (7) Transient Suppression. Use DC relays, solenoids and holding coils with diodes or other protective devices across the coils for transient suppression. (8) Power Service Protection. Use readily accessible, manually resettable or replaceable circuit protection devices (such as circuit breakers or fuses) for equipment and power source protection. Size and provide circuit breakers or fuses such that no wire, component, connector, PC board or assembly will be subjected to sustained current in excess of their design limits upon the failure of any single circuit element or wiring. (9) Fail Safe Provision. Design the equipment such that the failures of the equipment will not cause the failure of any other unit of equipment. 8. Environmental Design Requirements. Provide CVE capable of operating in temperatures ranging from -4 to 158 F with noncondensing humidity levels up to 95%. 9. Mechanical Requirements. (1) Modular Design. Design modular CVE to allow portions to be readily replaced in the field

5 Clearly identify modules and assemblies with name, model number, serial number and any other pertinent information required to facilitate equipment maintenance. (2) Connectors and Harnesses. Make all external connections by means of connectors. Key connectors to prelude improper hookups. Color code or mark all wires to and from the connectors. Provide connecting harnesses of appropriate length and terminated with matching connectors for interconnection with the communications system equipment. Plate all pins and mating connectors with not less than 30 microns of gold. Use solder type connections covered by a piece of heat shrink tubing securely shrunk to insure that it protects the connection. 10. Construction Methods. (1) General. Use the latest available techniques with a minimum number of parts, subassemblies, circuits, cards, and modules to maximize standardization and commonality. Design for ease of maintenance. Make all component parts readily accessible for inspection and maintenance. Provide test points shall be provided for checking essential voltages and waveforms. (2) Electronic Components. Comply with Special Specification, "Electronic Components". (3) Mechanical Components. Use stainless steel external screws, nuts and locking washers; do not use self-tapping screws unless specifically approved. Use corrosion resistant material, such as plastic, stainless steel, anodized aluminum or brass for all parts. Protect all materials used in construction from fungus growth and moisture deterioration. Separate dissimilar metals with an inert dialectric material. 11. Documentation. Provide documentation in accordance with Special Specification, "Testing, Training, Documentation, and Warranty," Article Testing. Test in accordance with Special Specification, "Testing, Training, Documentation, and Warranty," Article 2. Include the following: (1) Set up the CVE (field) and CVE (central) side by side at a site approved by the Engineer to verify operation of the RS-232 link from the central site to the field site. Provide site with 2 ISDN lines available for this test. Furnish bit error rate test (BERT) equipment to measure data errors on the RS-232 link originating at the first serial port of the CVE (central) and terminating at the first serial port of the CVE (field). Confirm that the RS-232 link, operating at 2400 bps, has an error rate not to exceed 1 bit per 10 million bits transmitted and is not code sensitive. Supply a dual trace oscilloscope and demonstrate that the time delay of characters transmitted over the RS-232 link do not

6 exceed 500 milliseconds and that the delay experienced is relatively constant to within 10 milliseconds. (2) Demonstrate that video images can be transmitted at a satisfactory rate from the field location to the central location. Supply a videocassette recorder (VCR) and tape of traffic scenes for this test. Connect the VCR to the CVE (field) and play the traffic scene tape, to provide input to the CVE (central). Demonstrate that the traffic scene is being received at the central site and displayed on a video monitor. Further, demonstrate with a screen indication at both the field and office sites that the ISDN B channels are bonded. Demonstrate at the field site that the frame rate is at least 6 frames per second for a traffic scene that has 30% of the scene being updated by moving vehicles. Test Equipment. Furnish an ISDN Test Set for proper installation, testing and maintenance of the ISDN service drops. Meet the following minimum requirements: (1) Compatible with AT&T 5ESS, Northern Telecom DMS-100, and National ISDN-1 Switches. (2) U Interface meeting ANSI T (3) 40 khz tone generation (U Interface): 0dBm ± 2-dB output (when terminated with 135 ohms). (4) Ni-cad battery capable of 8-10 hours of use when fully charged. (5) AC wall adapter/charger for the Ni-cad battery capable of charging the battery in 4-5 hours. Provide the following minimum features: (1) Single B channel or dual B channel BERT. (2) Automated call yourself BERT. (3) FEBE and NEBE testing. (4) 64-k and 56-k data and voice calls. (5) On-line assist key that explains complex messages in simple to understand language. (6) 20-location, 19-digit repertory dialer. (7) Last-number redial. (8) Low-battery indication. (9) 12 volt DC vehicle adapter/charger. 13. Training. Train in accordance with Special Specification, "Testing, Training, Documentation, and Warranty," Article

7 14. Warranty. Warranty in accordance with Special Specification, "Testing, Training, Documentation, and Warranty," Article Measurement. The Compressed Video Equipment (field), Compressed Video Equipment (central), Smart Shelf and ISDN Test Set will be measured as each unit furnished, installed, made fully operational and tested in accordance with this special specification. 16. 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 bid price for "ISDN Comp Video Equip (field)", "ISDN Comp Video Equip (central)", "Smart Shelf (central)", or "ISDN Test Set". These prices shall be full compensation for all equipment described under this item, all cables and connectors, all documentation and testing and furnishing all labor, materials, warranty, training and equipment necessary to complete the work