Wood and Douglas 1335, Operating Instructions Manual

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1892 1335 - Orion Radio Modem Operating Instructions - v2.9 / Aug 2009
APPENDIX E: SPECIFICATIONS
Versions Radio modem with telemetry, user data or both
Power supply External 9 to 15V DC, 0V earthed (not a floating supply) <100mA
RX, <1000mA TX (1W RF out)
Front panel connection via locking 2.1mm power plug.
Earthing Unit chassis, supply negative, antenna screen, data ground and
telemetry ground connections should be earthed to a common point
external to the unit.
Over-air data rates 19200 baud (20 and 25kHz channel width), 9600 baud (12.5kHz)
RF band and power VHF/UHF (100 - 868MHz) to order, options from 5mW to 2W RF
output
Antenna connection Single TX/RX, BNC female, 50 O
Operation Half-duplex
User Data and telemetry may be both be operational, interleaved in
time.
Control AT commands (proprietary set). Graphical User Interface provided.
Over-air commands to remote units (externally generated)
PTT facility to assist setup - one digital input keys transmitter
RSSI indication - assigned to an analogue output
Addressing Groups 1 - 254
Units 0 (base unit) to 254
Unit 255 broadcasts within Group.
Group 0 suspends addressing, all units accept transmissions with
this Group ID (excepting repeaters).
Telemetry Interface 4 digital in (5V logic or closing contact) - may be independently
programmed as pulse counters
4 digital out (open collector) 20V@200mA (500mA peak)
4 analogue in (0-2.5V, 0-5V, 0-10V, 0-20mA)
4 analogue out (0-2.5V, 0-5V, 0-10V, 0-20mA)
RJ45 8-way connectors
User Data Interface
(also accepts AT
commands)
- Serial Port A
RS232, RS422 or RS485
4800, 9600, 19200, 38400 baud
7or 8 data bits, parity Odd, Even or None
Flow control CTS/RTS, Xon/Xoff or None
Transparent sampling mode for non-standard data
RJ45 8-way connector