Videoswitch VDM - Manual (Page 38)

Videoswitch
VDM Digital Recorder
Vdm601t.doc
30
9 Information Screens
9.1 Viewing Drive Information
To see what drives are fitted and whether a CD is in the CD drive press these keys:
ALT and DRIVES
Press ALT and DRIVES to see whether a CD has been detected in
the CD drive, what size and type hard disc drives are fitted, and
which hard drive is currently allocated for recording.
This screen displays this information:
• Drive
Type
• CD
status
• Drive
Capacity
• Earliest Date and Time of recorded video
• Latest Date and Time of recorded video
• Which drive is currently being used to record
9.1.1 Re-Scan Drives
If for any reason the start and end dates of images on the hard drives need updating, the drives may be re-
scanned by pressing the
YES
key. This is normally necessary only if a drive has been changed.
YES
Press this key to update the information on all drives. This will cause a momentary interruption to
the recording process while drive information is updated.
9.2 Viewing Image Information
This screen displays different information in LIVE and PLAY modes.
• In LIVE mode, use this screen to see the current update rate and images size, together with a
summary of update rates for normal, custom and alarm/activity conditions.
• In PLAY mode, information about the currently displayed image is shown. Press first to ensure
that the displayed information is static before selecting this screen.
ALT and EVENT
Press
ALT and EVENT to see image rate and quality information.
9.2.1 Image Authentication
Each image contains 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, so
the replay software may also authenticate the image.