Alarm Video Check Dial-Up Standby - Panasonic WJ-AV20 Operating Instructions Manual

ALARM VIDEO CHECK DIAL-UP STANDBY

The video before and after an alarm is detected by the sensor can be reproduced and checked using the video storage func-
tion.
When the AV Codec is on standby (not in communication), then the video and audio of the camera selected at that time are
compressed and stored in the video memory. This stored video is called the alarm video. When the video memory becomes
full, new video is recorded over the oldest part of the video data stored in the memory. Storage operation is suspended during
communication and resumes after it is over.
When the sensor at a remote site detects an error, the AV Codec performs one of the following operations depending on the
settings.
Post-alarm storage OFF:
Post-alarm storage ON:
Alarm video is transferred from the remote site to the control site as controlled at the control site. The transferred alarm video
is stored in the video memory at the control site for later verification whenever necessary.
Notes
Only about 35 seconds of video and audio can be stored per alarm in the video memory. There is an error of about ±5
seconds of recording time.
Alarm video is deleted in the following cases.
• Alarm video stored at a remote site is deleted upon termination of communication by alarm dialing. The stored
alarm video is kept in the memory during alarm redialing (until the period of the specified times repeats).
• The alarm video already transferred to the control site is deleted when a new alarm video is transferred.
• Alarm video is deleted when power is switched off at the remote site or control site.
The video stored before an alarm is the compressed video of the camera selected at that time. If the view points are set so
that they will be switched together with the alarms, then the video stored before an alarm may be different from that stored
after it. To specify the video stored before an alarm, set a default view point and set the sequential scan to OFF in
24
Video write to the video memory is stopped and the control site is immediately called.
After video write is continued for about 20 seconds, the control site is called.