Harris M7300 - 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

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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.
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
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
3-Line Graphical Vacuum
Fluorescent Display
Microphone Connecto
r
On/Off/
Volume
Control
System/-
Group/-
Channel
Selection
Control
/ Ramp Control
Preset/
Softkey
Buttons
Emergency/
Home Button
+/- Ramp Control
Ambient Light-Level Sensor
Transmit
and Busy
Indicators
Scan On/Off Button
Clear Button
Menu Button
Option Button
12-Button Keypad
Clear Button
Menu Button
Option Button