43
Controls and Jumpers
Table 5: Terminal Pinouts for TB2
Table 6: Terminal Pinouts for TB3
Figure 14: Terminal Numbering for TB1, TB2, and TB3
Pin #
Label
Description
1
4W+2
Line 2 4-Wire Audio (+) [RX Audio only]
2
2W+2
Line 2 2-Wire Audio (+) [TX Audio when used in 4-wire]
3
2W–2
Line 2 2-Wire Audio (–) [TX Audio when used in 4-wire]
4
4W–2
Line 2 4-Wire Audio (–) [RX Audio only]
5
4W+3
Line 3 4-Wire Audio (+) [RX Audio only]
6
2W+3
Line 3 2-Wire Audio (+) [TX Audio when used in 4-wire]
7
2W–3
Line 3 2-Wire Audio (–) [TX Audio when used in 4-wire]
8
4W–3
Line 3 4-Wire Audio (–) [RX Audio only]
9
4W+4
Line 4 4-Wire Audio (+) [RX Audio only]
10
2W+4
Line 4 2-Wire Audio (+) [TX Audio when used in 4-wire]
11
2W–4
Line 4 2-Wire Audio (–) [TX Audio when used in 4-wire]
12
4W–4
Line 4 4-Wire Audio (–) [RX Audio only]
Pin #
Label
Description
1
AC1
12V
AC
Input 1
2
AC2
12V
AC
Input 2
3
GND
Ground
4
DC+
+V
DC
Input
5
GND
Ground
6
SUP
Supervisory Control Output
7
PTT
External PTT Input
8
MIC
External Microphone Input
9
SPK
External Speaker Output
10
GND
Ground
TB2
12
1
1
TB3
TB1
1
10
10