Motorcycle & Remote Mount Connection - Pin Functions - Motorola MTM800 User Manual

CONNECTOR PIN FUNCTIONS
Pin Function
16 Internal Mic Audio
17 SB9600-Reset
18 NC
19 GROUND
20 IGNITION
21 ON/OFF
22 EXPANSION-
PTT
23 SB9600_SW
24 HANDSET_AUDIO
25 NC
Table A-8 Pin Assignment of the 25 Pin subD Connector of the Data Expansion Head Enhanced
Motorcycle & Remote Mount Connection - Pin Functions
Figure A-7 Front View of the Motorcycle Enhanced Control Head
Description
This input depends on radio programming mode. This microphone sig-
nal is independent of the microphone signal on the accessory connec-
tor. The nominal input level is 80 mV. The DC impedance is 660 ohms
and the AC impedance is 560 ohms.
This output can be used to reset a SB9600 device.
Not Connected
Ground
The radio can be switched on by connecting this pin with pin 6 (FLT A+).
As long as both pins are connected, the radio will be switched on.
On/Off control.
When this input is used to key up the transmitter, the internal Mic Audio
input (pin 16) is selected.
This input is intended to switch the 4 wire RS232 interface into SB9600
mode. The radio must be switched off and then this input must be con-
nected to pin 6 (FLT A+). When the radio is switched on again, the 4
wire RS232 interface will be disabled and the SB9600 mode will be
active.
This is a low power audio output primarily intended for a connected
handset. the Dc level is 4.6 V and the AC level depends on the volume
setting.
Not Connected
A - 9