Service manual

OPERATION
3-20
April 2001
Part No. 001-9800-203
Other Scan Information
With all models, calls on the priority and block
ID codes are detected regardless of group scan
programming. All that is required is that the system
with those codes be selected or scanned.
The microphone must be on-hook for scanning to
occur (unless off-hook detection has been disabled by
programming). Scanning is sequential through the
programmed systems and groups that are in the scan
list (see Section 3.7.2). With the low tier models, scan-
ning is in system order, not display number order.
When a message is detected that the transceiver is
programmed to receive, scanning stops and the
message is received. Shortly after the message is
complete, scanning resumes (unless it has been
disabled). The length of this delay is set as described
in Section 3.7.3. The selected system and group (if
applicable) can be changed while scanning in the
normal manner. Scanning resumes shortly after the
change is made.
When scanning is occurring (see preceding illus-
trations), transmissions always occur on the displayed
system/group. However, when a message is received,
scanning temporarily stops and the display changes to
the system/group of the call (see Section 3.8.3 for a
possible exception). A response may then occur on the
displayed or selected group, depending on the
programming described in Section 3.7.4
Scan Types
The type of scanning is determined by the menu
SCN TYPE parameter (high tier only) or default
programming. The available types are as follows:
Low Tier Models
SYS-GRP - System/group scanning enabled
OFF - System/group scanning disabled, SCAN
switch non-functional
High Tier Models
SYS-GRP - Both system and group enabled
GRP ONLY - Group scanning only enabled
OFF - Both system and group scanning disabled,
SCAN switch non-functional
With low tier models, if the Scan option switch is
disabled, scanning is fixed in the programmed default
condition. With high tier models, the following config-
urations can also be programmed:
• If the Scan switch is disabled, the SCN TYPE menu
parameter can be used to select one of the preceding
three modes.
• If both the Scan switch and menu parameter are
disabled, scanning is fixed in the programmed
default condition.
• If the SCN TYPE menu parameter is disabled, the
user can enable only the type of scanning selected
by programming.
With high tier models, group scanning can be
disabled on systems by programming Group Scan =
“No”. It then does not occur on those systems even if
it is enabled as described. Calls are then received on
only the last selected group of those systems.
3.7.2 SCAN LIST PROGRAMMING
NOTE: Calls are always detected on the revert
(selected) system/group while scanning, even if it is
deleted from the scan list.
The scan list can be programmed without
selecting the scan mode. Operation with the different
models is as follows:
Low Tier Models
Only the selectable groups can be added to or
deleted from the scan list. To change the status of the
displayed system/group combination, press the A/D
option switch. The displayed system/group is not
in
the scan list (not scanned) when “–” is displayed (see
preceding illustration). If the A/D switch has been
disabled by programming, scan list programming is
not available.
The status of individual systems cannot be
changed. For example, if two or more groups of the
same system can be selected, only the group that is
displayed is deleted. Assume “1” selects System 1/
Group 1 and “2” selects System 1/Group 2. Deleting
the “1” system/group does not delete the “2” group
even though it belongs to the same system.