JVC SW-D8000U Instruction Manual page 52

SW-D8000U, 16CH. COLOR VIDEO MULTIPLEXER
faster update to tape of a camera in alarm. This is a system wide (global) setting, and is not set up
individually for each alarm input.
Normal:
NORMAL recording during alarms means that there is no priority recording for the cameras in
alarm, and the record list will be unchanged while alarms are active. However, the programmer can
still program the VCR and the unit to switch from a time lapse speed to a faster recording speed
during alarms, which by itself can ensure that alarm events have a faster update speed.
Exclusive:
EXCLUSIVE recording will cause the system to record only alarmed cameras. All non-alarmed
cameras are omitted from the record list while an alarm is active. EXCLUSIVE recording mode is
typically chosen only when several simultaneous alarms can be expected to occur very often, and
where a near real-time record of those alarm events are needed. The disadvantage of choosing
this mode is that other cameras will not be recorded at all while any alarm is active.
If EXCLUSIVE alarm recording is selected, then the alarm-input sensors used need to be:
q very comprehensive, so that alarm events are not missed, and
q reliable, so that the system does not start exclusive alarm mode recordings for false alarms.
NOTE: If only one camera is in alarm and the alarm speed is set to the 2 hour mode, then the
unit will automatically select INTERLEAVED recording even though EXCLUSIVE mode
is selected.
Interleaved:
During INTERLEAVED recording both the alarmed cameras and non-alarmed cameras are
recorded, but alarmed cameras, having a higher priority, are interleaved between non-alarmed
cameras. INTERLEAVED mode offers increased recording of cameras in alarm, without stopping
the recording of other cameras. This is the mode recommended for most installations.
Example:
Non-alarmed cameras: 1,2,3,5,7
Cameras in alarm:
NOTE: Because of the fast update rate of the SW-D8000U, if one camera is in alarm then
INTERLEAVED mode will result in real-time Playback of the camera in alarm. In
general, on the SW-D8000U, INTERLEAVED recording will give very fast update
speeds of cameras in alarm even for multiple alarms. INTERLEAVED mode is the
recommended setting.
ENABLE / DISABLE
Any alarm input can be set up as being active (enabled) or inactive (disabled). In this option you
may select:
q INDVIDUAL ENABLE
q ENABLE ALL
q DISABLE ALL
ALARM HISTORY
52 JVC PROFESSIONAL, IMAGING PRODUCTS
4,6
INTERLEAVED recording sequence:
1,4,6,2,4,6,3,4,6,5,4,6,7,4,6,1, ....etc.