Operating instructions

32 1892 1335 - Orion Radio Modem Operating Instructions - v2.9 / Aug 2009
Connections
Power
Front panel, locking power plug, 2 pole with 2.1mm centre pin.
Centre conductor: +9 to +15V DC
Outer conductor: 0V (connected to unit ground)
Antenna
Female BNC, 50O (or as radio connector on PCB version)
Antenna connection for both transmit and receive. The antenna will typically be mounted
directly onto this connector; otherwise the connection to the antenna should be as short as
possible and made in high-quality low-loss coaxial cable.
v Caution: do not power the Orion without an antenna or dummy load
connected, or the unit may be damaged.
Telemetry Ports (when fitted)
Four RJ45 8-way female connectors:
RJ45
Pin No.
Port 1
Digital Out
Port 2
Digital In
Port 3
Analogue In
Port 4
Analogue Out
Alert option
Relay Open collector
1 N/C no connection 0V 0V 0V
2 COM no connection Digital In 1 Analogue In 1 Analogue Out 1
3 N/O output 0V 0V 0V
4 Digital Out 1 Digital In 2 Analogue In 2 Analogue Out 2
5 Digital Out 2 0V 0V 0V
6 Digital Out 3 Digital In 3 Analogue In 3 Analogue Out 3
7 Digital Out 4 0V 0V 0V
8 GND Digital In 4 Analogue In 4 Analogue Out 4
v Note the different wiring of Port 1 when making up cables.
The analogue in ports can be used to transmit digital data if required by pulling them up to the
supply voltage via a 10K resistor, setting them to 0-10V, and applying a pull-down input as for
the digital inputs. Where outputs are used directly at the Master, they can be set to 0-5V.
Notes: The value of the RSSI can be programmed by command ATS310 to appear on any
one of the analogue outputs if required.
In order to test the transmitter, one of the digital inputs can be programmed by
command ATS316 to operate as PTT, i.e. pull to 0V to transmit.