Motorola MTM5400 User Manual
64
MTM5400 Mobile Terminal Installation Manual
INSTALLATION
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.
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.
14
ON_OFF_CONTROL /
FLASH_MODE
•
Switch into flash mode (connect pin14 with 6)
•
On/Off control for Std. Control Head
15
•
16
INT_MIC
Microphone analogue input of 80mV
RMS
, 600ohm impedance, 9V
=
17
18
NC
Not Connected
19
GROUND
Ground
20
IGNITION
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
on the radio if ignition of the vehicle is turned on. High active
21
ON_OFF_GND
This is On/Off control for the old Control Head “J” (MTM300 Control Head)
22
EXPANSION_PTT
Expansion PTT, works together with INT_MIC
23
24
HANDSET_AUDIO
Handset audio to earpiece Earpiece impedance has to be > 200 Ohm
25
NC
Not Connected
Table 12 9-Pin subD Connector
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
6
DSR
Data Set Ready
Input
7
RTS
Request to Send
Output
8
CTS
Clear to Send
Input
9
RI
Ring Indicator
Input
Table 11 25-Pin subD Connector
Pin
Function
Description