Motorola MTM5400 Onoffcontrol, Flashmode, Intmic, Ground, Onoffgnd, Expansionptt, Handsetaudio

64MTM5400 Mobile Terminal Installation ManualINSTALLATION

			Table 11 25-Pin subD Connector
Pin	Function		Description
14	ON_OFF_CONTROL /	•	Switch into flash mode (connect pin14 with 6)
	FLASH_MODE	•	On/Off control for Std. Control Head
15		•
16	INT_MIC	Microphone analogue input of 80mVRMS, 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
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

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.

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