Service manual

OPERATION
3-21
April 2001
Part No. 001-9800-203
High Tier Models
The system and group scan lists are user
programmable using the A/D (add/delete) option
switch. If this switch is not programmed or disabled,
scan list programming is not available. The displayed
system is in the scan list and scanned normally when
is displayed. Likewise, the displayed group is in
the scan list and scanned normally when is
displayed (see illustration in Section 3.7.1).
The system/group select mode described in
Section 3.4.5 also controls if the system or group scan
list is changed when the A/D switch is pressed. If the
switch is pressed with the system select mode enabled,
the status of the displayed system is changed. Then if
it is pressed with the group select mode enabled, the
status of the group is changed. For example, to change
the status of the displayed system, press the Select
switch if necessary so that the system select mode is
indicated and then press the A/D switch.
As described in the preceding section, group scan
list programming is disabled if group scanning is
disabled on the current system. If an attempt is made
to program the group scan list on one of these systems,
the error tone sounds, “GSCN DIS” is flashed in the
display, and no change in the scan list occurs.
Deleting a system only temporarily deletes the
groups associated with that system. When a system is
added back into the scan list, the original group scan
list is again active. Systems and groups can be deleted
from the scan list while listening to a message on the
system or group by pressing the A/D switch in the
normal manner. Scanning resumes shortly after the
system or group is deleted.
Saving Current Scan List Changes
The menu SCN SAVE parameter (high tier only)
or programming determines if changes to the system
and group scan list are saved. If “ON” is selected,
changes are saved to permanent memory as they are
made and the scan list does not change when power is
cycled. If “OFF” is selected, changes are not saved to
permanent memory.
Therefore, with low tier models, if the default
scan list save mode is programmed “ON”, changes are
saved and the scan list returns to the same state when
power is turned back on. Conversely, if “OFF” is
programmed, they are not saved and it reverts to the
programmed default status.
With high tier models, if the SCN SAVE menu
parameter is selectable and “ON” is selected, changes
are saved until “OFF” is selected. Further changes are
then not saved. Therefore, to store a list, select “ON”,
program the list, then select “OFF”. Then when power
is cycled, the scan list returns to the state that existed
when “OFF” was selected.
3.7.3 SCAN DELAY AND CONTINUE TIMERS
NOTE: The following timers are also used in some
circumstances when not scanning, such as when LTR
priority or block ID calls are received as described in
Section 3.8.3.
Receive Delay
When a message is received while scanning, there
is a programmable delay of 0-7 seconds before scan-
ning resumes. This delay is called the Receive Delay
Time, and it prevents another message from being
received before a response can be made. This delay is
also in effect if a control is changed while scanning
such as selecting another system/group. This timer is
reset each time another call is received.
NOTE: Scanning does not resume if it is disabled,
such as by taking the microphone off-hook.
Call Delay Time
The receive delay time controls the scan delay
until the transmitter is keyed and then the Call Delay
Time controls the delay. This time is programmable
for 0-7 seconds, and it ensures that a response to your
message is heard instead of some other message occur-
ring on another system/group. The Call Delay Timer
remains active for the remainder of the conversation,
and controls when normal scanning resumes, even if
additional responses are received.
Scan Continue Timer
There is also a scan continue timer that can be
programmed. This timer controls the maximum time