Control Head Installation; General Information; Figure 8-5: Ch-721 Scan Model Control Head Front Panel; Figure 8-6: Ch-721 System Model Control Head Front Panel - Harris M7300 Installation And Product Safety Manual

8.3

CONTROL HEAD INSTALLATION

8.3.1

General Information

The remote-mount M7300 mobile radio must be connected to a control head to provide the operator-to-
radio interface. Two different control heads are available — the CH-721 Scan model and the CH-721
System model. See Figure 8-5 and Figure 8-6 respectively. The CH-721 Scan model control head features
three (3) large menu selection buttons. The System model control head has a 12-button keypad to allow
advanced operations without the need of a DTMF-capable microphone.
Figure 8-7 on page 56 illustrates the rear panel of the two control head models. Both models have
identical rear panels and rear panel connectors.
On/Off/
Volume
Control
Transmit
and Busy
Indicators
System/-
Group/-
Channel
Selection
Control
/ Ramp Control
The CH-721 control heads feature a large easy-to-read 3-line graphical vacuum fluorescent display, an
on/off/volume control knob, menu controls and buttons, trunking mode buttons, an emergency/home
button, a scan on/off button, and three (3) preset buttons. Other front panel components include a
microphone connector and LED-type indictors. One LED indicator is the busy indicator that lights when
Preset/
Softkey
Buttons
Microphone Connector

Figure 8-5: CH-721 Scan Model Control Head Front Panel

(Other controls are same as shown for Scan model.)

Figure 8-6: CH-721 System Model Control Head Front Panel

MM-014763-001, Rev. E
3-Line Graphical Vacuum
Fluorescent Display
+/- Ramp Control
Scan On/Off Button
Ambient Light-Level Sensor
12-Button Keypad
Option Button
Menu Button
Clear Button
Emergency/
Home Button
Option Button
Menu Button
Clear Button
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