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16
Connectors, Indicators, Controls and Jumpers
Encoder/Decoder
TB2
Transceiver Interface - External
1 – PTT Common
2 – PTT Normally Open
3 – PTT Normally Closed
4 – Local TX Audio, audio is disconnected
when transmits
5 – TX Audio Hi
6 – TX Audio Low
7 – RX Audio Hi
8 – RX Audio Low
9 – Carrier Detect
10 – GND
Figure 4 Back of
J6 is located on the side of the desktop and in front on the 19-inch rack.
J6
Local Mic Input – External
1
Mic audio
2
PTT active low
3
Ground