Bosch Appliances NDN-921 operation manual 9.5.3Retention Time, Alarm recording, Alarm triggers

Models: NDN-921

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Alarm recording

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Alarm recording

Select the Pre-alarm time from the list box. Select the Post-alarm time from the list box. Select the Alarm stream to use for alarm recording.

Check the with encoding interval from profile: box and select a predefined profile to set a specific encoding interval for alarm recording.

Check the Export to FTP box to send standard H.264 files to the FTP server whose address is displayed.

Alarm triggers

Select the alarm type (Alarm input/ Motion/Audio alarm / Video loss alarm) that is to trigger a recording. Select the Virtual alarm sensors that are to trigger a recording, via RCP+ commands or alarm scripts, for example.

9.5.3Retention Time

Specify the retention times for recordings. If the available memory capacity of a medium has been used, older recordings are only overwritten if the retention time entered here has expired.

Make sure that the retention time corresponds with the available memory capacity. A rule of thumb for the memory requirement is as follows: 1 GB per hour retention time with 4CIF for complete frame rate and high image quality.

Enter the required retention time in hours or days for each recording. Recording 1 corresponds to Stream 1; Recording 2 corresponds to Stream 2.

AR18-10-B013 v1.52 2011.06 Installation and Operation Manual

Bosch Security Systems

Page 78
Image 78
Bosch Appliances NDN-921 operation manual 9.5.3Retention Time, Alarm recording, Alarm triggers