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MM-012099-001, Rev. B
25
POWER ON-OFF/VOLUME
KNOB
Applies power to the radio and adjusts audio 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
Used to select groups/channels. This is a 16-position rotary knob.
Note: A mechanical stop, used to limit the number of accessible
positions, 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 BUTTON
Used to declare an emergency by pressing and holding for a
programmed duration.
PTT BUTTON
The Push-To-Talk button must be pressed before voice
transmission begins.
SIDE OPTION BUTTON 1
SIDE OPTION BUTTON 2
Scrolls UP or DOWN thru available items within a sub-menu
(available talk groups, pre-programmed speed dial numbers,
canned alert messages, etc.).
7.1.2 Keypad
The front mounted keypad of the P5450 “Scan” model has six buttons and P5470 “System” model has 15
buttons. Refer to Figure 7-4: P5450 “Scan” Model Front Panel and Figure 7-5: P5470 “System” Model
Front Panel, respectively
.