MM-012099-001, Rev. B
10.1.1Buttons and Knobs
This section describes the primary function of the button and knob controls. Refer to Figure
POWER ON-OFF VOLUME KNOB
VOICE GROUP SELECTION CONTROL KNOB
EMERGENCY/ HOME BUTTON
PTT BUTTON
SIDE OPTION BUTTON 1 
SIDE OPTION BUTTON 2 
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=31). 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.
Selects systems or groups/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 Voice Group Selection control knob, loosen the set screw on the Voice Group Selection control knob metal base (using a 1.27 mm hex wrench), and remove the Voice Group Selection control knob metal base. Replace the 16 channel ring with the channel stop ring located at the desired channel. Reinstall the Voice Group Selection control knob metal base, tighten the set screw, and reinstall the Voice Group Selection control knob.
Automatically selects the
Exits the current operation (removing all displays associated with it) and returns the radio to the selected talk group. Terminates individual and telephone interconnect calls.
Activates one of a number of programmable software options selected during PC programming. Programmable options include hi/low power settings, keypad lock, LCD contrast, and LCD and keypad back lighting.
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