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GENERAL OPERATION
13
password must also be entered whenever program-
ming data is read or written using the PCConfigure 
software. If this password is lost, all personality infor-
mation must be erased using the PCTune software and 
the radio reprogrammed. Refer to Section 10 for more 
information on passwords.
3.3 BACKLIGHT CONTROL AND DISPLAY 
VIEWING ANGLE ADJUST 
If the BKLHT option switch is programmed, it 
can be used to select high, medium, or off backlight 
modes. Otherwise, the keypad and display backlight is 
fixed in one of these modes by programming. The 
backlight is totally disabled when the Surveillance 
mode is programmed (see Section 4.9).
If the display is difficult to read from the angle 
you normally view it, the viewing angle can be 
adjusted as follows: Press and hold the last option 
switch above the display and then press the first option 
switch above the display. Then release both switches 
and turn the Select switch until the best contrast is 
obtained. This function times out in 3-5 seconds.
NOTE: If the display appears blank or all icons are 
continuously displayed, the viewing angle is probably 
improperly adjusted.
3.4 ZONE/CHANNEL DISPLAY AND SELECT
3.4.1  ZONE/CHANNEL DISPLAY
The selected zone and channel numbers are 
displayed by the zone and channel displays shown in 
the following illustration. In addition, the selected 
zone identification (alias) is displayed in the alphanu-
meric display area when the zone select mode is 
enabled, and the channel alias is displayed when the 
channel select mode is enabled (see following). With 
conventional channels, the channel frequency may be 
displayed instead of the alias if the Display Informa-
tion option switch is programmed (see Section 5.9).
A zone can include any mix of up to 16 channels, 
and up to 16 zones can be programmed. Therefore, up 
to 256 channels can be selected. One use for zones 
may be for operation in different geographical areas. 
3.4.2  ZONE/CHANNEL SELECT 
The front panel Select switch is used to change 
the zone and channel. Pressing this switch toggles 
between the zone and channel select modes, and 
rotating it changes the zone or channel.
The current mode is indicated by the bar over the 
zone or channel display. For example, when the bar is 
over the zone display (see following illustration), the 
zone select mode is enabled. 
Rotating the Select switch clockwise increases 
the zone or channel and rotating it counterclockwise 
decreases the zone or channel number. After the 
highest zone or channel is displayed, wrap-around to 
the lowest zone or channel occurs and vice versa. If an 
unprogrammed channel is selected, 
“UNPROGRAMD”
 
is displayed and a tone sounds. The radio may also be 
programmed so that only programmed channels are 
selected.
The radio can be programmed so that the bar 
defaults to either the zone or channel display when 
power is turned on and after a change is made. The 
delay that occurs before it returns is programmed for 
1-15 seconds. It can also be programmed to remain in 
the last selected mode. 
3.4.3  DIRECT CHANNEL SELECT
The direct Channel Select feature is available 
with the HHC* (Handheld Control Unit) only, and if 
the Channel Select option switch parameter is 
programmed. This feature allows channels to be 
directly selected using the HHC numeric keys or Up/
Down switch. 
Zone
No.
Chnl
No.
Zone Select Indicator
Channel Select Indicator
Later models only