User manual

User Manual
man_905K_1.10.doc Page 51
Radio Transmitter
Frequency 902 - 928 Mhz 250 kHz channel spacing
Transmit power
1 Watt
Expected line-of-sight range
(subject to local conditions)
20 Miles + @ 4W EIRP
15 km @ 1W EIRP
USA/Canada
Australia / New Zealand
Range may be extended by using
up to 5 intermediate 905U
modules as repeaters,
Antenna Connector
SMA coaxial
Serial Ports
RS232 Port DB9 female DCE 9600 baud, no parity, 8 data bits,
1 stop bit
Inputs
Digital Inputs
2 inputs
Suitable for voltage free contacts
NPN transistor or TTL
Pulse Inputs
2 inputs
Share digital inputs. Max rate
300Hz for contact or transistor
inputs, 10KHz for TTL inputs
(50KHz on PI2 using divider)
PI2 has a configurable 1-255
integer divider
Max value for pulse rate is
1KHz.
Analogue Input One 0 - 24 mA, 0 - 10 V
Range user-configurable
“floating” differential input,
common mode voltage 24V.
Resolution 12 bit, Accuracy <
0.1%. Transducer warm-up time
configurable 0.5-100 seconds.
Analogue Input Setpoint
Configurable high & low setpoint
may be transmitted to remote
units, allowing set/reset of
remote digital outputs
System Parameters