Codan NGT 2010 RF Technical & Service Manual page 763

Pinouts of the Option I/O connector on the 8571
This connector is not used.
Pinouts of the Tcvr Audio connector on the 8571
Figure 4: Front view of the Tcvr Audio connector on the 8571
25
Table 2: Pinouts of the Tcvr Audio connector on the 8571
Pin no. Function
1
2
3
4
5–13
14–15 Ground
16
17
18
19–25 N/C
NGT Transceiver System Technical Service Manual
N/C
Remote PTT
N/C
Power on
N/C
Transmit audio
Rx audio pre-mute
Rx audio post-mute
8571—Overview and specifications
1
Input/output Signal level
Output Active Low
Output Momentary Low
0 V
Output Nom. 3 V p–p 10 kΩ
balanced
Input Nom. 1.2 V p–p 10 kΩ
balanced
Input Nom. 1.2 V p–p 10 kΩ
balanced
325