User manual

CHANNEL
Two push type switches. Press CHANNEL (up arrow) to in-
crease the channel number; press CHANNEL (down arrow)
to decrease the channel number. The channel number will be
shown on the display. Unprogrammed channels will be
skipped.
SCAN
A momentary type switch to turn the scan function on or off.
When used in conjunction with the CHANNEL switch it en-
ables the ADD/DELETE Function to allow the scan list to be
modified. When turned on, the display will show "SCN" in
the lower center portion of the display.
MODE
A momentary type switch used in the 128 channel models
only. These models can contain up to 8 modes with each
mode containing up to 16 channels. When the switch is
pressed once, the operating mode will increment one mode.
If continuous pressure is applied, the mode will increment to
mode 8 then back to mode 1. Unprogrammed modes will be
skipped.
INDICATORS
CHANNEL DISPLAY
Displays the current operating channel. In scan opera-
tion,when a carrier is detected on a channel, that channel is
displayed.
PRIORITY 1 (P1)
Illuminates when the channel displayed is a Priority 1 scan
channel.
PRIORITY 2 (P2)
Illuminates when the channel displayed is a Priority 2 scan
channel.
(S)
Illuminates when the channel displayed is a non-priority
scan channel.
SCAN (SCN)
Illuminates when the scan function is activated. Blinks when
the microphone is off-hook to indicate the radio has stopped
scanning.
BUSY (BSY)
Illuminates if the channel displayed is in use.
TRANSMIT
Illuminates whenever the Push-To-Talk (PTT) button is
pressed. Goes out when it is released.
VOLUME INDICATOR
Functions as a bar graph to indicate relative volume level. As
the volume is increased, more segments are illuminated.
MODE DISPLAY
Displays the current mode in a 128 channel radio.
OPTION (OPT)
Illuminates whenever an option is turned on.
SCAN OPERATION
The SCAN function allows monitoring of up to 16 re-
ceive channels. The scanned channels may be any frequency
within the frequency band limits of the radio and may be
Channel Guard protected (tone or digital). All scan functions
are retained in memory, even if the 12 Volt battery is discon-
nected.
Any channel may be scanned with or without a priority
level. One channel may be programmed for Priority 1 (P1)
and another for Priority 2 (P2) with any or all remaining chan-
nels programmed as non-priorities.
When using the scan function with a 128 channel radio, the
scan function works on a per mode basis. Only the current op-
erating mode will be scanned. Scan must be turned off before
changing modes.
RECEIVER SCAN RATE
The scan rate for the radio will vary depending upon the
number of channels programmed into the scan list and whether
or not Channel Guard is programmed. When scanning 16 inac-
tive channels, the priority channels are sampled 11 times/sec-
ond and the non-priority channels 3 times/second. The scan
rate will be faster when fewer channels are programmed into
scan memory.
Scan operation will be determined by the following condi-
tions:
• PRIORITY 1, PRIORITY 2 AND NON-PRIORITY
PROGRAMMED
The Priority 1, Priority 2 and up to 14 remaining channels
will be scanned. Once a carrier is detected (and if programmed
the correct Channel Guard is decoded), the LCD display will
indicate that channel. Sampling of the Priority 1 and Priority 2
channels continues while receiving a message. Should a Prior-
ity 1 or 2 channel carrier (and correct Channel Guard) be de-
tected while a non-priority channel is being received, the
applicable indicator, P1 or P2 lights, and the channel is
switched to the Priority 1 or 2 channel regardless of what is be-
ing received on the non-priority channel.
• NON-PRIORITY PROGRAMMED
Up to 16 non-priority channels may be scanned. Once a
carrier is detected (or correct Channel Guard is decoded) the
digital display will indicate the channel. Scan will stop and re-
main on the channel until the carrier disappears; after a few
seconds scanning resumes. The channels are scanned in de-
scending order.
TO PROGRAM SCAN CHANNELS AND
SELECT PRIORITY
The selection of scan channels and priority is front panel
programmable using the SCAN switch in conjunction with the
CHANNEL UP and DOWN switches.
NON-PRIORITY (S)
1. Confirm that the radio is turned on. If not press the
POWER switch.
2. If SCAN indicator is lit, press and release the SCAN switch
to disable scan function.
3. Select the desired channel using the CHANNEL UP and
DOWN switch.
4. Press and hold the SCAN switch, then press the CHAN-
NEL UP switch once to add the channel to the scan list.
The S indicator will be shown in the display to indicate that
the channel is now in the scan program.
5. Release SCAN switch.
6. Repeat steps 2 through 5 for each channel (up to 16) to be
added to the scan list.
PRIORITY 2 (P2)
1. With scan off, select the desired P2 channel.
2. Press and hold SCAN switch; then press the CHANNEL
UP switch twice. The displayed channel will now become
the Priority 2 channel and the P2 indicator will light to in-
dicate that the channel is now in the scan list as priority 2.
3. Release the SCAN switch.
PRIORITY I (PI)
The Priority 1 channel may be added to the scan list by one of
three methods by PC programming the radio’s personality.
Normally P1 is added using the front control panel (Method 1).
• Method 1: FRONT PROGRAMMABLE
1. With scan off, select the desired PI channel.
2. Press and hold SCAN switch; then press the CHAN-
NEL UP switch three times. The displayed channel will
now become the Priority 1 channel and the P1 indicator
will light to indicate that the channel is now in the scan
list as priority 1.
3. Release the SCAN switch.
• Method 2: FIXED P1 OPTION
The P1 channel is PC programmed into the radio’s per-
sonality.
• Method 3: SELECTED CHANNEL OPTION
This option is PC programmed into the radio’s person-
ality. Each time the scan function is turned on by push-
ing the SCAN switch, the Pl channel becomes the
channel in the display (the SELECTED channel).
TX
A previous channel with priority will become a non-pri-
ority scan channel when a new priority channel is pro-
grammed.
NOTE
LBI-31932
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