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Model 412C Program Module
412C.jpg (11673 bytes) Features:
  • Most popular in family of Traffic Prom Modules.
  • Meets or exceeds all CALTRANS Specifications.
  • Extended Down Time Accumulator.
  • New larger ring handle design.
  • Positive latch to prevent insertion damage.
  • Supports VLSI Memory Devices.
  • Compatible with Caltrans, Bi-Tran, and Wapiti programs

Description:
The 412C Prom Module is the most popular model in the family of Safetran's Prom Modules and is designed to meet or exceed all CALTRANS Specifications. Memory map and type of memory devices can be selected through a series of soldered jumpers. In addition, the 412C provides extended down time accumulation of up to 72 hours. This is an extension to the 4 hour and 15 minute down time accumulator in the 170 Controller. Two eight position dip-switches mounted on the front panel allow for variable modes of software operation A lithium battery is supplied for back-up power to the volatile memory devices and the down time accumulator circuitry. Battery is not installed during shipment. A write protect feature, under direct software control, provides additional capability to the 412C Prom Module.

Application:
The 412C can be installed in all brand Model 170 Controllers. Based on the software requirements, configured to operate with most popular software packages. The 412C Prom Module provides the user with a platform to interchange data and programs, available at Western Pacific Signal.

Conveniences:
The 412C provides several convenient and useful features for WPS 170 users. A new larger handle design is provided with the module, making insertion and removal faster and easier. In addition, there is a mechanical device to prevent the insertion of the module upside-down, thus eliminating damage to the module. There are four sockets that accept 28-pin memory devices. The standard configuration provides for the installation of two 27128 EPROMs (16K each) one 1225 NOVRAM (8K) and one 6264 RAM (8K). HCT drivers are used in the 412C to increase noise immunity. A battery clip and on/off RTCA logic switch is provided. A lithium battery installed in the clip will provide back-up to onboard RAM and the down time accumulator circuitry.

Specifications:
Memory: Total 64K Memory Map.
Size: Fits standard prom module slot (meets CALTRANS size specs).
Mechanical: Mechanical stop provided to prevent improper insertion.
Battery Back-up: Battery clip to hold one 3V "AA" cell is provided to back-up RAM and down time accumulator circuitry.
Memory Devices: 8K-32K EPROM, RAM, NOVRAM, and EEPROM.
Sockets: Four 28-pin sockets.
Configuration: Four preset configurations are provided. Other configurations available.
Write Protect: Write protect circuitry provided to protect RAM during power downs.
Identification Switches: Two identification switch packages on front panel decoded at address 7000 and 7001.
RTCA circuit: A real time clock adjuster circuit is provided that extends the down time accumulation to 72 hours.
Logic Switch: A SPST logic switch is provided to control standby power to the RTCA circuit only. With switch in the on or off position, RAM back-up power is supplied constantly. Remove battery from clip when storing module for periods longer than 1 week.