WatchDog Alert Monitor Receiver User Manual - page 5
Auto Reset with N Time Delay - Adding the N time delay to revert operation causes the
WatchDog pager to disregard the state of the carrier during the N time. The N time
begins immediately after the alerting cycle and ends on N timeout. At this time the
WatchDog will enter normal auto reset operation.
LOW BATTERY ALERT
The WatchDog LT pager will provide an audible tone alert “beep beep” to indicate a low
battery condition. The audible low battery reminder is every 2 minutes.
Additionally, the WatchDog LT has a three level LED battery level indicator on top of
the pager. All three bars lit represents fully charged batteries.
WatchDog Scan Operation
The WatchDog LT pager provides three types of scan. Channel scan, selective call scan
and priority scan.
Channel Scan - When the WatchDog LT is in the channel scan mode it will alternately
search from frequency 1 to frequency 2 looking for presence of carrier. The primary
function of channel scan is to allow monitoring any activity on either channel. Only one
channel can be actively monitored at a time. If activity is detected on either F1 or F2 the
WatchDog LT pager will lock on that channel until channel activity ceases. At this time
the pager will resume scanning between channels.
Priority Scan - If priority scan is selected the WatchDog LT pager will alternately
search from frequency 1 to frequency 2 looking for the presence of carrier. Alerting can
only occur on priority channel (F1). If channel activity is detected on F1 then the
WatchDog LT pager will lock on F1 and remain on F1 until channel activity ceases. At
this time the scan function will resume. If channel activity is detected on F2 then the
WatchDog LT pager will process voice on F2 and periodically scan back to F1 looking
for presence of carrier. Anytime channel activity is detected on the primary channel the
pager will lock on that channel.
Selective Call Scan - The selective call scan mode allows the WatchDog LT to silently
scan from channel to channel looking for address tones. The pager will only open the
audio path based on detection of an address and not just channel activity. If a proper
address is detected the WatchDog LT will alert and open the audio path for messaging.
After the messaging period the pager will continue to function based on the “audio
function” programmed such as “revert to carrier squelch”, “auto reset”, manual reset and
so on.
In order to return to the scan mode the pager must first enter selective call standby. This
is done automatically if the audio function is programmed for “auto reset” or “timeout”.
If programmed for “revert” or “manual reset” then the reset button must be depressed and
released. The WatchDog LT will then resume selective calls scan.