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64
Pin
Function
14
ON_OFF_CONTROL /
FLASH_MODE
15
16
INT_MIC
17
18
NC
19
GROUND
20
IGNITION
21
ON_OFF_GND
22
EXPANSION_PTT
23
24
HANDSET_AUDIO
25
NC
9-Pin subD Connector
The pin assignment of this 9-pin subD connector will follow the requirements of an RS232 standard
interface with RS232 voltage level. The cable (see section "Connecting Cables" on page 68) which
has to be used is a standardized serial interface cable which allows to connect a data device with an
RS232 Interface such as for example PC, Laptop, Console.
Pin
Function
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
MTM5400 Mobile Terminal Installation Manual
Table 11 25-Pin subD Connector
•
Switch into flash mode (connect pin14 with 6)
•
On/Off control for Std. Control Head
•
Microphone analogue input of 80mV
Not Connected
Ground
Connecting this pin to the ignition line of the vehicle that will automatically turn
on the radio if ignition of the vehicle is turned on. High active
This is On/Off control for the old Control Head "J" (MTM300 Control Head)
Expansion PTT, works together with INT_MIC
Handset audio to earpiece Earpiece impedance has to be > 200 Ohm
Not Connected
Table 12 9-Pin subD Connector
Description
Data Carrier Detect
Received Data
Transmitted Data
Data Terminal Ready
Ground
Data Set Ready
Request to Send
Clear to Send
Ring Indicator
Description
, 600ohm impedance, 9V
RMS
PC Direction
Input
Serial IN
Serial OUT
Output
Output
Input
Output
Input
Input
INSTALLATION
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