30 Installing the Radio TM8100/TM8200 Installation Guide
© Tait Limited November 2012
3.11 Blank Control Head
The blank control head on the TM8105 radio has a 9-way D-range plug on
the control head for programming (using the TMAA20-02 RJ45 to 9-way
D-range adaptor).
Notice When the programming connector is not in use, the connec-
tor seal must be installed. This ensures that the control head is sealed
against water, dust and other environmental hazards.
The pin allocations for the programming connector are explained in the
following table.
Figure 3.8 TM8105 radio with the blank control head
Table 3.5 Programming connector for the blank control head - pins and
signals
Pinout Pin Signal name Description
1 RX AUD Receive audio output (after
volume control)
2 TXD Asynchronous serial port: transmit data
3 MIC AUD Microphone audio input
4 RXD Asynchronous serial port: receive data
5 ON/OFF Hardware power on/software power off
input (active low)
6 +13.8V Unswitched 13.8V power supply
7 PTT PTT input
8 AGND Analogue ground
9 DGND Digital ground
programming
connector
(connector seal
installed)
front view
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