Microprocessor:  32-bit 68331, 16 Mhz, 16 bit data bus, 24 bit address bus.

  Memory:  RAM-256 Kbytes battery backed low power static RAM.  FLASH-512 Kbytes.  Battery Backup Lithium coin cell backs up RAM & realtime clock/calendar min 2 years

  Memory Cartridge:  4 Mbyte to 10 Mbyte  removable Sandisk Flash cartridge.

  I/O Expansion: First card cage can have any I/O, modems, FlashDisk, sleep board, etc., up to 8 cards plus CPU.  Up to 7 card cages attach with ribbon cables, can hold I/O up to 64 ch per cage.

  Display: 20 line X 40 char (320 by 240 dot)  backlit graphic LCD, 6 in diag. detachable from card cage.  Text- All std ASCII chars plus special graphic chars.  Trends-Up to 10 traces per page; pages incorp into user defined text pages, as many as will fit in RAM.  User defined scale grid.  Bargraphs-Up to 20 hor bars/display page to show analog values.

  I/O Surge Protection:  All I/O is optically isolated, meets IEEE surge protection rqmts.

  Keyboard:  16 key sealed tactile membrane with interrupt scanning.

  Documentation:  300 page bound manual.

  Autobooting:  Auto startup on power application

  Analog Inputs:  8 ch per board, 12 bit res., successive approx, optically isolated, 4-20 ma or 0-5 v.  Factory calibrated.

  Analog Outputs:  4 chan per board, 12 bit resolution, optically isolated.

  Digital Inputs :  Status- 8 chan/board, optically isolated, 120VAC or 24 VDC compatible.  Pulse Counting-all DI channels in first card cage count 128 PPS.  Pulse Duration Detecting-all DI in first card cage can convert pulses to analog with 4ms resolution .

  Digital Outputs:  8 ch per board, 3  amp relays.  Pulse Duration Outputs-Base relays can generate PWM or one shot signals with 4 ms res.

  Serial Ports :  Up to 8 RS232/modem ports or 8 dual RS232/printer ports in base card cage.

  Modbus Protocol:  Std RTU master or slave protocol on any port except programming port.

  Modem:  Bell 103/212 standard.

Radio Interface:  4-wire audio, adj. gain, xformer isolated, isolated key line.  Low tones mode for splinter chan.

Phone Interface:  2 wire audio adjustable gain, transformer isolated.

Autodialing:  On/off hook relay, touchtone generate.

Autoanswering:  On/off hook relay and ring detector.

Touchtone Detection:  Standard tones on speech board.

Communications:  Background CRC gen/decode, variable length messages, user defined message lengths.  Can combine status, int, float, and double precision int in any message.

Eavesdrop Mode:  Any RTU can accept data passing between any other stations.

Peer to Peer:  Full RTU to RTU or RTU to master or master to RTU messaging.

Store and Forward:  Initiating station sets path through up to 3 intermediary stations

Address Range:  1 to 255

  Printer /RS232 Port Board:  Standard Centronics compatible  parallel port, dual RS232 ports.  Selectable RS485 port 1; SDI-12  port 2. 

  Flash Cartridge Interface:  Board accepts 4 M to 10 Mbyte removable Compact Flash cartridge.  Dumps logged data in ASCII

  Power Interface:  12 VAC/15 VDC +/-20%, 130 ma. to 2.5 amps max, resettable fuse.

Loop Supply:  Isolated, regulated 24 VDC +/- 5%, fused, 160 ma.

Battery Charger:  160 ma., reverse protected, fused.

  I/O Connections:  All I/O uses removable rising cage screw headers in banks of up to 12 each, 14 ga wire

  Speech Synthesizer:  8 Khz sampling record & playback.  Up to 256 messages in 12 minutes total storage.   

  Operation Security:  Watchdog Timer-Hardware timer resets unit 0.5 sec. after interrupt fail.  Cannot be disabled.  Telemetry Watchdog-Resets rcv buffer if no character received within 1 sec.  Brownout Detector-Halts process if  logic voltage falls below 4.75 V, restarts when voltage rises to 5 V.

  Software:  Storage-operating system and all user config. and programming stored in nonvolatile flash memory.  Flash loader stored in flash  protected boot block.  Security-parameter voting and memory integrity test on boot.   up, CRC gen/detect on serial ports.  Scanning-Built in software scans all I/O, ports, timers, realtime clock.

  Variables:  Supports 32 bit integer, floating point, boolean, strings, arrays.

  Programming:  Modules-applications use precompiled modules resident in flash memory where programmer  interconnects modules and sets properties using supplied Win95/98/NT program.  No programming rqd for  most applications.

  Ladder Logic:  Ladder logic is built in to the WIN95/98/NT configuration program to handle misc controls.

  Error Messages:  Configuration program handles all setup errors.  Run time software is self protecting... no run time errors.

  Enclosure:  16 ga. Steel, blue powder coat 9 slot card cage with detachable display/keyboard module.  Cage: 9.75 X 4.6 X 4.1 in.  DSP:  8.6 X 4.8  X 0.75 in

  Temperature Range:  -40 to +85 deg. C logic.  -20 to +60 C LCD display

  Warranty:  1 year std limited warranty

  Repair:  Nominal 24 hr turnaround