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MM-012099-001, Rev. B
65
9.1.1 Buttons and Knobs
This section describes the primary function of the button and knob controls. Refer to Figure 9-1 and
Figure 9-2.
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=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.
VOICE GROUP
SELECTION
CONTROL KNOB
Selects pre-programmed channels. 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 1.27mm 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. Re-
install the Voice Group Selection control knob metal base, tighten the set
screw, and re-install the Voice Group Selection control knob.
EMERGENCY/
HOME BUTTON
Automatically selects the pre-programmed Group/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 1
Unsquelches the receiver and allows channel monitoring prior to
transmission. Momentarily removes the Receiver Channel Guard decoding
from the channel.
SIDE OPTION
BUTTON 2
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.