Connecting The Power Supply; External Power Supplies - 4RF Aprisa SR User Manual

Connecting the Power Supply

The nominal input voltage for a radio is +13.8 VDC (negative earth) with an input voltage range of +10 to
+30 VDC. The maximum power input is 35 W.
The power connector required is a Molex 2 pin female screw fitting part. This connector is supplied fitted
to the radio.
The negative supply of the Aprisa SR power connection is internally connected to the Aprisa SR enclosure.
Power must be supplied from a Negative Earthed power supply.
Wire your power source to power connector and plug the connector into the radio. The connector screws
can be fastened to secure the connector.
Spare Molex 2 pin female power connectors can be ordered from 4RF:
Part Number
APST-CML2-FEM-01
Turn your power source on:

All the radio LEDs will flash orange for one second and then the OK, MODE and AUX LEDs will light
green, the TX and RX LEDs will flash red.

The Aprisa SR radio is ready to operate

The TX and RX LEDs will be green (steady or flashing) when the radio is registered with the
network.
If the LEDs fail to light, carefully check the supply polarity. If the power supply connections have been
accidentally reversed, internal fuses will have blown to protect the unit.
Spare fuses are contained within the radio, see 'Spare Fuses' on page 60 for instructions on how to locate
and replace the fuses.

External Power Supplies

The following external power supplies are available from 4RF as accessories:
Part Number
APSA-P230-030-24-TS
APSA-P230-048-24-TE
APSA-P230-060-24-TS
APSA-P48D-050-24-TA
Part Description
4RF SR+ Spare, Connector, Molex 2 pin, Female, 1 item
Part Description
4RF SR Acc, PSU, 230 VAC, 30W, 24 VDC, -10 to +60C
4RF SR Acc, PSU, 230 VAC, 48W, 24 VDC, -20 to +75C
4RF SR Acc, PSU, 230 VAC, 60W, 24 VDC, -10 to +60C
4RF SR Acc, PSU, 48 VDC, 50W, 24 VDC, 0 to +50C
Aprisa SRx User Manual 1.3.0
Installing the Radio | 59