User manual

DV-IP User Manual v1.01 Feb 28
th
2003
DV-IP User Manual
14
update the Record Duration. Changing the Record Duration will likewise change the
Standard Record Rate.
Example Record Rates
20ms = 50 pictures per second
40ms = 25pps
50ms = 20pps
100ms =10 pps
125ms = 8pps
200ms = 5 pps
500ms = 2pps
1000ms = 1pps
WARNING: When running the unit at maximum Record Rate (50pps or 20ms in Standard
Record Settings), this will affect viewing and network transmission, as the video codecs will
be running close to capacity – the DV-IP’s priority is to record the footage to the internal
HDD, so transmission performance will be reduced. This is exhibited by slow connection to
the html pages and reduced viewing frame rates. Multi-user viewing will also be affected. It is
not recommended to set the Standard Record rate to 20ms for everyday usage, but rather
only for specific situations where this rate is necessary.
Alarm Record Rate - The DV-IP record rate when any alarm configured to change the
Standard Record Rate is active. For example, the unit may be configured to increase the
recording rate when a door contact is triggered. The Alarm Record Rate is not taken into
account in the calculation for Record Duration.
Video Expiry Period - Indicates the maximum time any image can be stored on the hard
disk. If the record duration is less than the expiry period, the images will automatically be
overwritten.
Camera - Cameras available on the DV-IP.
Title - Displays the Camera titles defined in the Camera Set-up Page
Recording - Enables cameras for recording. If the tick box next to the title is ticked, this will
cause the 8 camera record fields below the title to become ticked. Likewise, if it is unticked,
the boxes below it will also become unticked.
Do not forget to save the pages for any changes to become active. You will need
to reset the unit for certain changes. This is done through the Reset page of the
System menu.