User's Manual

ASTRO XTS 4000 5
General Radio Operation
Adjusting the Display Brightness
Press the preprogrammed Dim button or access this feature through the
menu to change the display brightness to one of three levels.
• Off to high
• High to medium
• Medium to off
The level of brightness will remain on for a preprogrammed time before it
turns off automatically, or you can turn it off immediately by pressing the
Dim button again.
Status Icons
At the internal display, the top two display rows contain icons that indicate
radio operating conditions. Some of these icons are also shown in
external display, but in monochrome. The table below shows a list of
these icons.
Table 3: Status Symbols
Icon Description
*Call Received
Blinks when receiving an Individual Call.
Received Signal Strength Indication (RSSI)
The received signal strength for the current site, for
trunking only. The more bars in the symbol, the
stronger the signal.
Fuel Gauge at External Display
Displays the level of charge in the battery. Blinks when
battery is low.
*Fuel Gauge at Internal Display
Displays the level of charge in the battery. Blinks when
battery is low.
Ring Style
Indicates the type of ring style selected for incoming
calls and pages. See “Ring Style” on page 25.