T6-D-USER-RV-EN
Page 7-3
Connector information
© Park Air Systems Limited 2017
Connector
Pin
Signal
Characteristics
LINK RJ45
White cable
1
2
3
Link Status input/output
Voltage level is 0 V to +5 V.
4
5
6
7
Ground (0 V)
Connected to pin 7 of the Audio connector.
8
The amber LED is illuminated
when the radio is selected as the active radio.
Notes:
When two radios are connected via LINK connectors with the J4 LINK cable, ACTIVE/INACTIVE
signalling is routed between them.
The white J4 LINK cable is a non-standard cable. It connects a pair of radios configured for automatic
ACTIVE/INACTIVE control with the Park Air J4-4WEMSWITCH. Only pins 3 and 7 are connected.
Connector
Pin
Signal
Configuration
Characteristics
FAC RJ45
Yellow cable
1
Active/Inactive
STANDARD - closed when
active (default).
INVERTED - open when active.
Normally open, grounding output, 200 mA
maximum.
2
RSSI output
Analogue voltage, from 1 V at -110 dBm RF
input, increasing linearly by 0.075 V/dB, to
10 V at +10 dBm RF input. Accuracy of ±5 dB.
3
RX tape
Fixed 0 dBm ±2 dB for 90% modulation,
600 ohm output.
4
Squelch relay
STANDARD - closed on squelch
lift (default).
INVERTED - open on squelch
lift.
Normally open, grounding solid-state relay.
Maximum ratings:
±60 V AC or DC, 100 mA.
5
Ready output
STANDARD - closed when BIT
status is Full Service and radio
is not inhibited (default).
INVERTED - open when BIT
status is Full Service and radio
is not inhibited.
Normally open, grounding output, 200 mA
maximum. Active Ready output illuminates
green LED
.
6
7
Ground (0 V)
8
Supply output
28 V ± 1 V.
A total of <250 mA can be drawn from all
Supply output pins.
1
1
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