452 TMAA10-02 Handset TM9100 Service Manual
© Tait Electronics Limited August 2005
20.2 Interface Specification
The following table and diagram summarizes the signals used for the handset
on the radio’s microphone connector and shows the interface between the
handset and the radio.
.
Table 20.5 Handset microphone connector - pins and signals
Pin Signal
Handset PCB
Connector
Colour Description
1 RX_AUD 8 brown receive audio to handset
2 — — — not connected
3 — — — not connected
4 PTT 2 white PTT and hookswitch
5 MIC 9 yellow audio from the handset to dynamic-mic
support board
6 GND 10 green analog ground
7 — — — not connected
8 CH_GPIO1 3 blue programmable line controlling private mode
Figure 20.2 Handset to radio interface
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