Digital Data Communications LEVEL ONE FCS-4400 - Manual (Page 82)

Alarm Buffer
You can set the Pre-alarm image and audio (the image and audio before the alarm detection) and the Post
- alarm image and audio. These can be set when Alarm sending FTP client setting menu or Image memory
setting menu is set to On, and besides when Use alarm buffer is selected.
Setting
Alarm buffer：To activate the Alarm buffer function, select On. The basic setting options are displayed below.
When you do not use the Alarm output function, select Off.
Recording capacity
Pre-alarm period：Display the maximum recording capacity of image/audio before the alarm detection.
Post-alarm period：Display the maximum recording capacity of image/audio after the alarm detection.
Recording time
Set the recording time for the Pre-alarm image/audio and Post alarm image/audio.
Pre alarm period：Type it with recording time of the image/audio before the alarm detection.
Post alarm period：Type it with recording time of the image/audio after the alarm detection.
Note ：
• The value of Recording capacity differs depending on Image size, Bitrate (for MPEG4) and Image quality
(for MPEG4 and MJPEG) in the camera setting menu.