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MM23772, Rev. F
105
11.1.1 Buttons and Knobs
This section describes the primary function of the button and knob controls. Other functions associated
with these controls are detailed in later sections.
POWER ON/OFF
VOLUME KNOB
Applies power to and adjusts the receiver’s volume. Rotating the control
clockwise applies power to the radio. A single alert tone (if enabled through
programming) indicates the radio is operational.
Rotating the control clockwise increases the volume level. Minimum volume
levels may be programmed into the radio to prevent missed calls due to a low
volume setting. While adjusting the volume, the display will momentarily
indicate the volume level (i.e. VOL=40). The volume range is from a minimum
programmed level of zero (displayed as OFF in the display) up to 40, which is the
loudest level.
SYSTEM/CHANNEL
SELECTION KNOB
Selects systems or channels (depending on programming). This is a 16-position
rotary knob.
Note: A mechanical stop, which can limit the positions accessed, is shipped with
the radio but must be installed. To install the mechanical stop, remove the
channel knob, loosen the set screw on the channel knob metal base (using a
1.27mm hex wrench), and remove the channel knob metal base. Replace the 16
channel ring with the channel stop ring located at the desired channel. Reinstall
the channel knob metal base, tighten the set screw, and reinstall the channel
knob.
EMERGENCY/
HOME BUTTON
Automatically selects the pre-programmed System by pressing and holding for a
programmed duration. It can also be used to declare an emergency by pressing
and holding for a programmed duration. The button must be pre-programmed for
either operation, but not both.
PTT BUTTON
Push-To-Talk must be pressed before voice transmission begins.
SIDE OPTION
BUTTON 2
Unsquelches the receiver and allows channel monitoring prior to transmission.
Momentarily removes the Channel Guard decoding from the channel.
SIDE OPTION
BUTTON 1
Activates one of a number of programmable software options selected during PC
programming. Programmable options include hi/low power settings, keypad lock,
LCD contrast, LCD and keypad back lighting.