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3012—Overview and specifications
The CTS and RTS lines provide hardware flow control between the data modem and the
terminal or PC.
Pinouts of the Transceiver connector on the 3012
The Transceiver connector is a 15-pin D-type socket used to connect the data modem
to the transceiver. This interface also supplies switched DC power from the transceiver to
the data modem.
Figure 4: Front view of the Transceiver connector on the 3012
1
9
Table 2: Pinouts for the Transceiver connector on the 3012
Pin no. Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
298
8
15
Power supply
Power supply
Serial control data Tx
N/C
Quiet
Busy
PTT
Audio
Ground
Ground
Scan
Spare
Busy
Serial control data Rx
Audio
Input/output
Signal description
Input
+12 V
Input
+12 V
Output
TTL
Output
+12 V when in data mode
Output
OC
Output
OC
Output
3 V p−p max
Input
Input
Input
TTL
Input
4 V p–p max
NGT Transceiver System Technical Service Manual
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