ELPRO 905U - Radio and Serial Specifications

Chapter Five Specifications
man_905-105_2.16 Page 59
Mains fail status Monitored Can be transmitted to remote modules
Battery voltage Monitored As above
Radio Transceiver (905U)
Spread spectrum Frequency hopping
Frequency USA/Canada
Australia
New Zealand
902 – 928 MHz
915 – 928 MHz
922 – 928 MHz
Transmission Power 1W
Signal detect / RSSI -120 to –50 dBm
Expected line-of-sight range
(subject to local conditions)
20 miles + @ 4W ERP
15 km + @ 1W ERP
depending on local
conditions
USA / Canada
Australia / New Zealand
Range may be extended by up to 5
intermediate modules as repeaters
Antenna Connector Female SMA coaxial
Data transmission rate 19200 baud
Radio Transceiver (105U)
Fixed Frequency Channel spacing 12.5 / 25
KHz
380 – 400 MHz; 400 – 420 MHz;
420 – 440 MHz; 430 – 450 MHz;
450 – 470 MHz; 470 – 490 MHz,
490 – 512 MHz
Transmission Power Configurable 0.5 – 5W
Signal detect / RSSI -120 to –50 dBm
Expected line-of-sight range
(subject to local conditions)
70 miles @ 10W ERP
25 miles @ 2W ERP
depending on local
conditions
ERP allowed depends on license conditions
Range may be extended by up to 5
intermediate modules as repeaters
Antenna Connector Female SMA coaxial
Data transmission rate 905U
105U
19200 b/s
9600 b/s (12.5KHz); 19200 b/s (25KHz)
Serial Ports
RS232 Port DB9 female DCE 9600 baud, no parity, 8 data bits, 1 stop bit
RS485 Port 2 pin terminal block 9600 baud, no parity, 8 data bits, 1 stop bit,
Typical distance 1 mile / 2km
Data transmission On change-of-state
+ integrity update
Update time configurable
Protocol - serial
- radio
asynchronous ARQ, with
16 bit CRC
synchronous ARQ
Automatic acknowledgements with up to 4
retries
Communications fail status May be mapped to local or
remote output
Resetting of outputs on comms fail
configurable