A - 6 CONNECTOR PIN FUNCTIONS
Remote Head Enhanced - Pin Function
Figure A-5 View of the Remote Head Enhanced Connector
Pin Function Description
1 Audio + Balanced Audio + (Bidirectional)
2 Speaker + Positive output of the radio's audio PA.
3 BUS+ This is used for communication between the radio and an
Enhanced Control Head.
4 Audio- Balanced Audio - (Bidirectional)
5 Speaker - Negative output of the radio’s audio PA.
6 Ground Ground
7 Radio On/Off Control This is the Enhanced Control Head service request input. A level of
5 volts indicates that the Enhanced Control Head needs to
communicate with the radio. In addition it switches on the radio's
voltage regulators. The idle state is a level below 0.6V.
8 SCI_TX This if for communication between the radio and the Enhanced
Control Head.
9 FLT_A+ This voltage is at battery voltage level and is available as long as
the radio is connected to the supply voltage. The maximum current
is 300mA. A fuse in the radio prevents further circuit damage in
case of shorting this pin to ground.
10 Analog Ground Analog Ground
Table A-5 Pin Assignment of the 10 Pin TELCO-Connector of the Remote Head Enhanced
Front View
CAUTION:
NOT
a Microphone Connector
J302
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910
6866539D31.book Page 6 Tuesday, March 20, 2007 6:32 PM
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