Motorola JT 1000 User Manual page 16

Channel Scan™ Features
A. Description
The scan feature allows the user to monitor activity on different channels.
The radio is capable of scanning up to 16 channels in the scan list, with one list
available per radio. A radio can be programmed via Radio Service Software for
either non-priority or priority channel scan with PL/DPL or carrier squelch
operation.
Notes:
• A radio programmed for non-priority channel scan, will not have priority-
channel capability.
• With scan on, the menu system and the DTMF feature are both
non-functional.
Non-priority channel scan means no scan channel has priority over another.
The scanner stops on the first scan channel with activity. When activity is over
and the "hang time" has expired, scan proceeds to the next active channel. Hang
time is the amount of time that the radio user has to respond to a received
transmission. Hang time is programmable on a per-radio basis.
Priority channel scan means that any one of the radio's scan channels may
be designated as a priority channel. The priority channel is checked for activity
more frequently than non-priority channels. If the radio is locked on a non-priority
channel and activity is detected on the priority channel, the radio will leave the
non-priority channel and lock onto the priority channel. An alert tone is generated
to indicate that a priority message is being received.
Note: With scan on, the channel selected automatically becomes a member
of the scan list.
Three types of scan are available:
1. Automatic Scanning (Auto Scan) – is preprogrammed in the radio using
Radio Service Software, and slaved to one or more channels. A radio with
auto scan will automatically begin scanning whenever the auto scan channel
position is selected. When auto scan is programmed to a channel, that
channel will always operate in the scan mode. The number of auto-scan
channels is equal to one less than the number of channels in the radio.
2. Preprogrammed Conventional Channel Scan – is preprogrammed in the
radio using Radio Service Software.
3. Operator-Selectable Conventional Channel Scan - lets the user program the
scan list by using a combination of side buttons or toggle switch, and the
channel selector knob. The programming procedure is explained, in detail, in
paragraphs titled "Programming Operator-Selectable Channel Scan."
Transmitting (pressing the PTT) while in the scan mode is accomplished in
one of three ways (programmed via Radio Service Software):
• Revert to Selected Mode – lets you transmit while scanning is in
progress. The transmission will occur on the channel selected by the
channel selector.
16 Radio Operation
with Features (cont.)