Codan NGT 2010 RF Technical & Service Manual page 766

8571—Overview and specifications
Figure 7: Front view of the Option 4-wire connector on the 8571
6
Table 5: Pinouts of the Option 4-wire connector on the 8571 (15-10510-001)
Pin no. Function
1–2
3–4
5
6
7–8
328
4
5 3
8
2
7 1
Balanced Tx audio
Balanced Rx audio
Frame
Ground
PTT relay contacts
Input/output Signal level
Input Impedance > 3 kΩ
Impedance 600 Ω
Output
0 V
Output To key link transmitter
NGT Transceiver System Technical Service Manual