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The PRISM HP operating controls are located on the
radio's front, top and left panels. A 6-button (scan model)
or 15-button (system model) keypad, Liquid Crystal Dis-
play (LCD), microphone and speaker are on the front
panel. The top panel houses a rotary SYSTEM/GROUP/
CHANNEL knob, POWER ON-OFF/VOLUME control
knob and an EMERGENCY button. An OPTION button,
CLEAR/MONITOR button and the Push-To-Talk (PTT)
button are all located on the left side panel. The Universal
Device Connector (UDC) is located on the right panel
and is used while programming the radio and for acces-
sory connection. A battery release button is located on
the back adjacent to the PPT button.
The display has three, twelve character alphanumeric
lines used to show the operational mode of the radio. A
back light illuminates the display and the keypad for
nighttime use. An LED is located on the front top edge of
the radio. Red indicates transmit.
8
USER INTERFACE
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