Controller - Institute of Transportation Engineers

4.2.4 Transition Board
A TRANSITION Board (TB) shall be provided to transfer serial communication and
control signals between the MCB and the Interface Master-board. Said signal and
communication lines shall be driven/received off and on the module compliant to EIA-
485. The Transition Board shall provide a 1 K-Ohm pull-up resistor for the A2 & A3
installed lines. If the DC Ground is not present (slot not occupied) at the CPU EIA-485
line drivers/receivers, the drivers/receivers shall be disabled (inactive).
4.2.5 Shielded Interface Harness
A SHIELDED INTERFACE HARNESS shall be provided. It shall include MCB and
Transition Board connectors with strain relief, lock latch, mating connectors, and harness
conductors. A minimum of 25 mm of slack shall be provided. No power shall be routed
through the harness. The harness shall be 100% covered by an aluminum mylar foil and
an extruded black 0.8 mm PVC jacket or equal.
4.2.6 Data Key
A DATAKEY Receptacle (KC4210, KC4210PCB or equal) with Key (DK1000or equal)
resident shall be provided and mounted on the CPU module front panel ( or the Transition
Board of Type 1A). The Black DATAKEY shall be tested, interrogated and all 128
addresses read using Software Interface. Power shall not be applied to the receptacle if
the key is not present.
4.2.7 CPU Module Software
The following shall be supplied:
1. Operating System 5. Validation Suite
2. Drivers and Descriptors 6. Deliverables
3. Application Kernel
4. Error Handler
4.2.7.1 Operating System
The CPU Module shall be supplied with Microware Embedded OS-9 Version 3.03 or
later software and, in addition, the following:
1. Embedded OS-9 Real Time Kernel
2. Sequential Character File Manager (SCFMAN)
3. Sequential Protocol File Manager (SPFMAN)
4. Pipe File Manager (PIPEMAN)
5. Random Block File Manager (RBFMAN)
6. C Input Output Library (CIO)
Standard for the ATC – Type 2070 March 29, 2001
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