Park Air Systems Limited B63300HS Manuel D’Utilisation
T6T 300 Watt VHF Transmitter
Page 89
Installation
MARC Audio Connector
The MARC Audio connector is an 8-way RJ48 socket. It can be used as an alternative to the MARC
connector for audio and PTT connections. The connector pin-out is shown below and detailed in
Table 19.
The MARC Audio connector is an 8-way RJ48 socket. It can be used as an alternative to the MARC
connector for audio and PTT connections. The connector pin-out is shown below and detailed in
Table 19.
Note:
The line level figures shown for the MARC Audio connector are the limits when testing the
transmitter using a sine wave; the line level will be 10 dB above the line level setting. See the
information supplied under the heading ‘Line Level Setting’ in Operation.
transmitter using a sine wave; the line level will be 10 dB above the line level setting. See the
information supplied under the heading ‘Line Level Setting’ in Operation.
Table 19 MARC Audio Connector
Pin Number
Signal
Characteristic
1
2
Audio line in (-)
Audio line in (+)
Balanced 600 ohm, -30 to +10 dBm.
Phantom keying can be superimposed on the audio
lines. See
lines. See
3
Fast antenna
change-over/PTT
(output)
change-over/PTT
(output)
Open collector NPN transistor grounding output,
200 mA maximum, configurable normally open or
normally closed.
200 mA maximum, configurable normally open or
normally closed.
4
Not used
-
5
Not used
-
6
PTT (input)
Remote PTT signal input. See
7
Ground
0 V.
8
Not used
-
Pin 1
RJ48 Plug
Numbering is shown looking from the top of the connector.
The top is being viewed when the lever is on the bottom.