CONVENTIONAL FEATURES
30
then becomes the default list for all conventional chan-
nels in that zone (it overrides the system program-
ming). This slave feature is programmed on the Edit
Zone screen.
If the
SCAN
option switch is programmed, the
default list selected by all conventional channels (even
those belonging to slaved zones) is temporarily
changed. The preceding default scan lists are automat-
ically reselected whenever radio power is cycled.
Conventional Scan List Select Procedure
The scan list select procedure is revised with later
53xx models. The procedures for revised and early
models are as follows:
Revised 53xx Models (Firmware 1.28/2.6/3.6/4.2
or Later)
1. With scanning off, press and hold the
SCAN
option switch until a tone sounds (scanning is off
when the rotating is not indicated in the right
status display). If required, turn scanning off by
briefly pressing this switch. If the
SCAN
option
switch is pressed while scanning, Nuisance
Channel Delete described in Section 4.11.6 is
performed.
2. The currently selected list is then indicated in the
display as “SCAN LIST x”, where “x” is the scan
list number. Rotate the Select switch to select the
desired list and then exit this mode by pressing
the Select or
SCAN
option switch.
Early 53xx Models (Prior Firmware Versions)
With firmware versions prior to those listed above,
conventional mode scan lists are selected and scan-
ning is turned on and off by repeatedly pressing the
SCAN
option switch. For example, if three scan
lists are programmed, the first press activates scan-
ning and scan list 1, the second activates scan list 2,
the third activates scan list 3, and the fourth disables
scanning and the cycle repeats. The currently
selected scan list is indicated as described above.
5.11.3 TRANSMITTING IN SCAN MODE
Each conventional scan list can be programmed
for one of the following modes. These modes deter-
mine if priority sampling occurs and also the channel
on which transmissions occur while scanning. Refer to
the next section for more information on priority
sampling.
No Priority -
No priority channel sampling occurs
when the list is selected. The radio transmits on the
selected channel.
Priority/Tx Selected -
Priority sampling occurs and
the priority channel or channels are those programmed
in the selected scan list. The radio transmits on the
selected channel.
Priority/Tx Priority (1) -
Priority sampling occurs
and the priority channel or channels are those
programmed in the selected scan list. The radio trans-
mits on the priority (1) channel.
Priority (1) on Selected -
The priority (1) channel is
always the selected channel. The radio transmits on
the selected channel.
Talkback -
No priority sampling occurs. The radio
transmits on the channel of a call while scanning is
halted. Then once scanning resumes, it transmits on
the selected channel.
5.11.4 PRIORITY CHANNEL SAMPLING
NOTE: The following describes priority sampling
when scanning conventional channels. Priority
sampling when scanning SMARTNET/SmartZone/P25
Trunked channels is described in Section 6.12.2.
General
The priority channel sampling feature ensures
that when priority scanning, messages on the priority
channel are not missed while listening to a message on
some other channel. The radio can be programmed as
just described so that the priority channel is a fixed
channel programmed in the current scan list, the
currently selected channel, or not used.
NOTE: Priority channel sampling is not available
when receiving analog encrypted (DES/DES-XL) calls,
and also when receiving P25 calls if equipped with
ARM firmware 1.23 or earlier. In addition, the priority
channel is not scanned if the active channel is an
