Videoswitch VDC - Manual (Page 19)

VDC Digital Recorder
Vdc601c.doc
15
9.2 Image Information
To enter the image information screen, press these keys at the same time:
This screen displays different information in LIVE and PLAY modes:
9.2.1 Live
In LIVE mode, the Image Information screen displays the following:
• Current overall record rate
• Image retention period in days
• Record mode (normal or alarm)
• Connected
cameras
• Average image size
• Date of available images
9.2.2 Play
In PLAY mode, the Image Information screen displays the
following information about the current image:
• Date/Time
• Time zone (summertime, wintertime)
• Camera
number
• Image
size
• Image number (all images are numbered)
• Serial number of VDC on which image was recorded
• Revision of firmware at the time the image was recorded
• Position of the index and image on the hard drive
• Digital signature authentication
Each image includes a digital
signature, which enables the
system to verify its integrity. The
signature is checked on replay, and
this status screen will report either
that it has been authenticated or
rejected.
The signature is carried with the
image if it is copied to CD and
subsequently transferred to a
computer. If any images have been
modified, the authentication
process will fail.