Industrial Control Unit Specifications

General, All Boards
Operating Temperature	-40 C to +65 C
Humidity	+95% non-condensing
Altitude	10,000' AMSL
Environmental Protection	PCB treatment for corrosion
	Conformally coated for mild H2S environment
	Gold plating, all signal connectors
	Nickel plating, Power and interface connectors

TER-070 CPU
Dimensions	2.5" x 3.875"
CPU	Hitachi 64180
Operating Crystal Frequencies	9.216/12.288 MHz
Instruction Set	Z-80/8085 compatible
RAM	32K/64K/96K bytes
PROM	2 28-pin sockets
	32K/64K/96K bytes
Communication Ports	2; Programmable Baud rates
Timers	2 Programmable, 1 Hardware Watchdog
Memory Management Unit	Allows greater than 64K address range
DMA controller	Onboard
Non-volatile Memory Support	Separate Power Rails allow RAM to be battery backed up from motherboard

TER-071 Motherboard
Dimensions	3.25" x 8.0" SnapTrack Compatible
A/D Converter	12 bit, 200 microsecond, CMOS
DIP Switches	2 8-bit, user definable
Indicators	4 LEDs, user definable
Communication Support	RS232 conversion, 2 Ports, 9 Pin D connector configured as DTE, 15 pin D connector configured as DCE
RAM Backup	Lithium Cell, 30 day backup
Expansion Module Support	Buffered interface to CPU, appropriate wait states added

TER-073 Power Supply
Dimensions	3.25" x 6.0"
Input	117 V AC +/- 15%
Outputs	12 V DC, 5.7 V DC, unregulated 24 V DC
Battery Support	Trickle Charger, Low voltage disconnect, 12/24 Volt cells
AC voltage detect	Optocoupler
Connectors	Pluggable terminal blocks
Fuses	3 AG
Technology	Linear, Simple design for field maintenance purposes, intended where efficiency is not a concern

Modem
Dimensions	3.25" x 5.0"
Power Input	12 - 28 V DC
Baud Rate	1200 Bps, Bell 202 compatible
FM Radio Keyer	Optocoupler image of RTS
Isolation	Transformer coupled
Watchdog capability	Shutdwn if RTS time exceeds 10 seconds, can be disengaged for constant carrier applications
Indicators	LEDs on TXD, RXD, RTS TIMEOUT
Digital Interface	RS232 via 25-pin D connector
CTS Selection	Jumper selectable from 10, 50, 110, 250, 400, 800, and 1700 milliseconds
Modem Transmit Level	Jumper selectable from -20, -10, -6, and 0 dbm

TER-078 4-4-2 Expansion Module
Dimensions	3.25" x 10.0"
Optocoupled, transient protected Status inputs	4
Differential 4-20 mA, +/- mA, 0-5 V Analog Inputs	4
10 Amp rated relay Form C contacts	2

TER-080 Status Input Expansion Module
Dimensions	3.25" x 8.5"
Number of points	16
Transient Protection	Industrial grade
Type	Optocoupled
Field Connectors	Pluggable terminal blocks
Indicators	LEDs in series with each point