Motorola MTM700

A - 8 MTM700 Mobile Radio / Detailed Service Manual CONNECTOR PIN FUNCTIONS
Expansion Head - Pin Function
Figure 6 View of the Expansion Head Connectors
Pin Function Description
1FLT_A+ Filtered A+
2 5V + 5V regulated / 100mA
3 ON_OFF_CONTROL Radio On/Off Control
4 GROUND Ground
5 SPEAKER - Analogue Speaker output +;Speaker impedance has to be > 20Ohms
6 INT_MIC Microphone analogue input of 80mVRMS,600 Ohm impedance,9V=
7 BUS + SBEP Bus
8 SPEAKER + Analogue Speaker output +;Speaker impedance has to be > 20 Ohms
9 HANDSET_AUDIO Handset audio to earpiece impedance has to be > 200 Ohms
10 EXPANSION_PTT Expansion PTT, works together with INT_MIC
Table 23 Pin Assignment of the 10 Pin TELCO Connector of the Expansion Head
Pin Function Description PC direction
1 DCD Data Carrier Detect Input
2 RXD Received Data Serial IN
3 TXD Transmitted Data Serial OUT
4 DTR Data Terminal Ready Output
5 GND Ground Output
Table 24 Pin Assignment of 9 Pin subD Connector of the Expansion Head
98765432110
Front View
Caution:
NO Microphone Connector
25 Pin subD
Connector
9 Pin subD
Connector
1
13
14
25
1
5
6
9