CONNECTOR PIN FUNCTIONS MTM700 Mobile Radio / Detailed Service Manual A - 5
Standard Control Head - Pin Function
Figure 4 View of the Standard Control Head’s Microphone Connector and Flex Cable
32 RS232_RTS Request To Send
33 RS232_DTR Data Terminal Ready
34 RS232_CTS Clear To Send
35 RS232_RX RX-Data
36 RS232_RI Ring Indicator
37 OPTION_DET Option Detect; for future applications
38 9V3 Regulated 9V3
39 NC Not Connected
40 Handset Audio Handset Audio to earpiece
Pin Function Description
1 SCI_TX Serial Communication Interface TXD
2 SPEAKER + Analogue Speaker output +
3 Speaker - Analogue Speaker output -
4 GND Ground
5 ExP_BD_PTT Expansion Head PTT
6 5VD + 5V regulated
Table 20 Pin Assignment of the Standard Control Head Interface Flex Cable (12 pins)
Table 19 Transceiver Pin Assignment of the Expansion Board Connector (40 pins)
*) For Expansion Head Connection only.
Mode Menu
98765432110
o
Pin 1
Front View to
Microphone
Connector
Flex
Cable
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