Figure 58: Remote Head Enhanced – Front View and Connector Location
CAUTION: Connector to the Control Head.
5.4.1
10-Pin TELCO Connector
Data Expansion Head Enhanced:
1 The 10-pin TELCO connector can be used to connect a customized adapter, for example,
for connecting the helmet including microphone/earpiece (non-Motorola Solutions accessory) or an
external PTT. The customized adapter is connected using the cable RKN4077_.
2 The 10-pin TELCO connector can be used to connect a remote mount Enhanced Control Head.
CAUTION: DO NOT connect any other accessories (for example, microphone). This might
result in malfunctioning hardware failure.
Remote Head Enhanced:
The 10-pin TELCO connector of the Remote Head Enhanced can be used in the same way as
described in point 2.
Table 50: 10–Pin TELCO Connector Pins
PIN Function Description
1 Audio + Balanced Audio + (Bidirectional)
2 Not Connected NC
3 BUS+ This is used for communication between the radio and an En-
hanced Control Head.
4 Audio- Balanced Audio - (Bidirectional)
5 Not Connected NC
6 Ground Ground
7 Radio On/Off Control This is the Enhanced Control Head service request input. A level
of 5 V indicates that the Enhanced Control Head needs to com-
Table continued…
68015000553-KC
Chapter 5: Connectors and PIN Assignment
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