Installation Guide

Table Of Contents
Figure 21: Pin Configuration of Rear Accessory Connector (as viewed from the rear of the
radio)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
D+
Vbus
SW B+
Spkr-
Tx Audio
Aux Audio Out 1 / RxD
Aux Audio Out 2 / TxD
GP5_1 (PTT)
GP5_2 (Monitor)
GP5_3 (Chan Act)
Emerg Sw
Ign Sense
D-
USB / MAP_ID Ground
MAP_ID_1
Power Ground
Spkr+
Audio Ground
Rx Audio
Ground
Ground
GP5_6
GP5_7
GP5_8
VIP_1 (Ext Alarm)
MAP_ID_2
Table 4: Rear Accessory Connector Pin Functions
Pin No. Pin Name Pin Function
1 USB+ USB + (Data)
2 USB- USB - (Data)
3 VBUS USB Power (5 V from USB ac-
cessory/cable)
4 USB/MAP_ID GDN USB/MAP_ID Ground
5 MAP_ID_2 Accessory Identifier
6 MAP_ID_1 Accessory Identifier
7 SW B+ Switched Battery Voltage
8 PWRGND Ground
9 SPKR- Speaker - (3.2 Ω minimum im-
pedance)
10 SPKR+ Speaker + (3.2 Ω minimum
impedance)
11 Tx Audio Rear External Microphone In-
put
1
12 Audio GND Audio Ground
1
This microphone signal is independent of the microphone signal on the front microphone con-
nector. The nominal input level is 80mVrms for 60% deviation. The DC impedance is 660 Ω
and the AC impedance is 560 Ω.
6880309T23-FB
Chapter 3: Options and Accessories Installation
38