TM8100/TM8200 Service Manual
TMAA10-04 Remote PTT Kit and TMAA10-05 Hands-Free Kit
565
© Tait Electronics Limited
June 2006
.
32.6
Circuit Description
The remote microphone signal is amplified by a pre-amplifier in the
auxiliary connector plug. The power supply to this amplifier is provided by
the +13.8V supply on the auxiliary connector. This supply is filtered and
regulated down to approximately 3.3V. The reference voltage for the
regulator is provided by AUX_GPIO4 line.
The remote microphone signal is fed via AUX_MIC_AUD and an input
selector to the radio’s internal microphone amplifier. The microphone input
selected depends on the PTT source used to make the call. If the remote PTT
is used, then AUX_MIC_AUD is selected. If the control head microphone
PTT is used, then CH_MIC_AUD is selected. Test points for all other
auxiliary connections are provided on the auxiliary connector plug PCB to
facilitate the connection of other devices or signals e.g ignition switch signal.
Figure 32.1
TMAA10-04/TMAA10-05 to radio interface
Содержание TM8235
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Страница 62: ...62 Description TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
Страница 148: ...148 Disassembly and Reassembly TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
Страница 162: ...162 Servicing Procedures TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
Страница 178: ...178 Interface Fault Finding TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
Страница 258: ...258 Receiver Fault Finding TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
Страница 380: ...380 Transmitter Fault Finding 25W TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
Страница 404: ...404 CODEC and Audio Fault Finding TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
Страница 428: ...428 Fault Finding of Control Head with Graphical Display TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
Страница 446: ...446 Spare Parts TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
Страница 447: ...TM8100 TM8200 Service Manual 447 Tait Electronics Limited June 2006 TM8100 mobiles TM8200 mobiles Chapter 3 Accessories...
Страница 470: ...470 TMAA01 01 Line Interface Board TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
Страница 506: ...506 TMAA02 08 Keypad Microphone TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
Страница 523: ...TM8100 TM8200 Service Manual Installing a Remote Kit 523 Tait Electronics Limited June 2006 Circuit Diagram...
Страница 526: ...526 Installing a Remote Kit TM8100 TM8200 Service Manual Tait Electronics Limited June 2006 Circuit Diagram...
Страница 539: ...TM8100 TM8200 Service Manual Installing an Enhanced Remote Kit 539 Tait Electronics Limited June 2006 Circuit Diagram...
Страница 542: ...542 Installing an Enhanced Remote Kit TM8100 TM8200 Service Manual Tait Electronics Limited June 2006 Circuit Diagram...
Страница 550: ...550 TMAA04 05 Ignition Sense Kit TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...
Страница 554: ...554 TMAA10 01 Desktop Microphone TM8100 TM8200 Service Manual Tait Electronics Limited June 2006...