User Manual

14221-1200-4000, Rev. A
57
pitch/tilt of the head as needed, and then retightening the thumbscrews. A 150-degree pitch/tilt angle is
provided. A gimbal-type mounting pedestal is also available, as illustrated in Figure 8-9 on page 60.
Figure 8-3: CH-100 Control Head Front Panel
Figure 8-4: CH-100 Control Head Rear Panel (shown with Standard Mounting Bracket)
8.3.2 General Information on the CH-721 Control Head
The CH-721 Scan and System model control heads feature a large easy-to-read 3-line graphical vacuum
fluorescent display, an on/off/volume control, 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 two LED-type indicators. One LED indicator is the busy indicator
that lights when the radio is receiving a call and one is the transmitter-enabled indicator that lights when
the radio is transmitting. All buttons are backlit for viewing in low-light conditions.
As illustrated in Figure 8-5, the CH-721 Scan model control head features three (3) large menu selection
buttons. The System model control head, shown in Figure 8-6, has a 12-key keypad to allow advanced
operations without the need of a DTMF-capable microphone.
On/Off/Volume
Control
System/Group/-
Channel Selection
Control
Ambient Light
Level Sensor
4.3-Inch LCD Touchscreen
Color Display
Emergency Button
Home Button
USB Programming
Port
Microphone
Connector
CAN Port
Connectors
(2 places)
Speaker Audio
Connector
Serial Port Connector
(Female DB-9)
DC Power
Connector
Accessory Connector
(Female DB-25)
Thumb-
screws
(2 places)
Standard
Mounting
Bracket
Note: Serial Port
and Accessory
connectors
are shown without
waterproof covers.
Built-In
Microphone for
Noise-
Suppression