SW-D7000U, 9CH. COLOR VIDEO MULTIPLEXER
JVC PROFESSIONAL, IMAGING PRODUCTS 47
The following pull down menu is displayed.
Record List
Normal Record Speed
Alarm Record Speed
Exit
You may wish to review the description of “How multiplexed recording works” in Section 2.0.
RECORD LIST
A programmer programmed RECORD LIST
controls the sequence in which the single fields from
each camera are multiplexed to the VCR during record mode.
The list can contain any camera several times. For example, if the list is set to the equivalent of “1 2
3 3 3 4 5 6 7 8 5__”, then camera 3 will be recorded once in the record list cycle, but for three times
the selected dwell time, and camera 5 will be recorded twice in the cycle. For a multiplexer, the
programming for camera 5 is the preferred way to repeat a camera because it results in more evenly
spaced updates for that camera. Repeat a camera only if it should normally have priority over other
cameras in the list.
A blank entry ends the list. For example a list set to the equivalent of “1 2 3 _ 5 6 7 8 _” will only
record cameras 1, 2 and 3. The first ‘blank’ after the ‘3’ ends the record list.
Automatic modification of the record list:
The
SW-D7000U
will automatically modify the record list in the case of alarms and/or activity
detection, according to the parameters selected by the programmer in the ALARM and MOTION
DETECTION menus. For example, the programmer can select ‘INTERLEAVED' recording on alarm.
In this case, a camera in alarm will be recorded in virtual real time.
NOTE:
If alarms and activity detection occur at the same time, the alarm’s modifications to the
record list will take precedence and will cancel all modifications made to the record list
via activity detection. (Refer to the Alarm and Motion Detection sections in this manual
for more detail.)
NOTE:
The
SW-D7000U
does not control the setup of the VCR itself. The installer must ensure
that the VCR is correctly programmed and has correct alarm inputs.
NORMAL AND ALARM RECORD SPEEDS
Unless VEXT (see 2.2) is used, it is important that the
SW-D7000U
be programmed with the same
record speeds as those to which the VCR has been set for NORMAL and ALARM recording.
Time-lapse VCRs are usually capable of dual speed operation, allowing two different speeds of
recording during NORMAL operation and ALARM situations. The ALARM recording speed are
usually the faster speed and normally the fastest that the recorder will go, which is the 2 HR speed
setting for EIA. Normal time-lapse recording is typically set to a slower speed, such as 12 hour to
960 hour, resulting in a tape saving while no alarm events are occurring. If the VCR switch input
(VEXT) is not active (see VCR SETUP sub-menu), then the recording speeds in the
SW-D7000U
menus must match those set in the VCR. The factory default setting is 2 hour for NTSC/EIA.
