MM-014763-001, Rev. E
56
the radio is receiving a call and one is the transmitter-enabled indicator that lights when the radio is
transmitting. The front panel also has an ambient light sensor for automatic display dimming.
Figure 8-7: CH-721 Rear Panel (both control head models)
Prior to installing the control head, verify it has the proper software version installed and
verify it has been properly configured for customer use.
Because Installation Kit MAMW-NZN7R contains the most complete set of materials for
installing the radio and control head, the following instructions make repeated reference
to items within this kit. Item numbers given in parenthesis refer to items in the kit as
listed in Table 4-4 on page 22.
In a mobile installation, more than one control head can be connected to one mobile radio for multi-head
installations. A multi-head installation may be required in a vehicle such as a fire truck or any large
vehicle where more than one operator may require use of the radio. Multi-head installations also provide
other benefits such as intercom functionality between different operator positions.
CAN Port
Connectors
(2 places)
Speaker Audio
Connecto
Serial Port Connecto
(DB-9)
DC Power
Connector
Accessory Connecto
(DB-25)
Note: Serial and Accessory connectors are
shown without waterproof covers.
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