Operating instructions

1892 1335 - Orion Radio Modem Operating Instructions - v2.9 / Aug 2009 87
User data rates Depends on over-air rate and transmission mode / packet size
chosen. Can be calculated as follows:
Message overhead: 50 bytes
FEC takes 28% of remaining (non-header) bytes if used.
Packet Mode overhead: 52 bytes per message (plus wait for 50
byte acknowledgement). 1024 byte maximum length.
1 character per byte (start/stop/parity bits stripped and restored)
Control/SCADA
Interface
- Serial Port B
GUI / SCADA / AT commands, RS232 only
9600, 19200, 38400 baud
8 data bits, parity Odd, Even or None, no handshake
RJ45 8-way connector
Indications 3 LED indicators showing status codes
Fault handling Alarm output (open collector 20V@200mA (500mA peak) or SPCO
relay 24V@1A rated optional)
Physical Diecast enclosure 156mm x 91mm x 37mm overall.
Four M4 holes for mounting.
Operating temperature -20°C to +55°C
Weight 560g