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14
3. OPERATIONS
This section shows you how to operate and
manage the DVR when it gets in the way.
3.1 Configuring Recording
Settings
Recording time will vary depending on the
image size, recording rate, and the capacity of
the hard-disk drives. Generally, the DVR
comes with a built-in hard-disk drive for
continuous recording from one to four weeks
under most recording conditions. The table
below shows the possible recording times
based on a 20GB hard-disk drive at certain
refresh rates and the corresponding image
quality. With one or more hard-disk drives in
operation, please calculate the recording time
using the table below in accordance with your
requirement. For an NTSC unit, for example, if
the unit is set to record images with BEST
quality at a 60 fps record rate, normally a
20GB hard-disk drive will be filled in 3.7 hours
(see the gray area in the table). If the total
capacity of 80GB hard-disk drives is in use
under the same refresh rate and picture quality,
it will be filled in 14.8 hours (4 times the rate of
a 20GB hard-disk drive).
Note: Set up the REC Time Mode when a
multiplexer is connected.
If a multiplexer is connected, for optimum
image recording and playback, the record
speed of the multiplexer must be correctly
adjusted to match the DVR and set the
MULTIPLEXER option on the setup menu to
ON. This can be done by either of the two
methods detailed below.
(1) If an APPRO multiplexer is connected for use,
you can program the REC time mode of the
multiplexer by referring to the table below (each
refresh rate refers to one REC time mode).
(2) For a multiplexer other than APPRO, please
connect the SW. OUT terminal in the 9-PIN
D-SUB connector on the rear panel of the DVR
to the multiplexer’s trigger contact. The DVR will
provide the timing signal (Negative/Falling) to
the multiplexer. Thus, if the DVR changes the
recording speed, the multiplexer will
automatically adjust the record to match. A
2-hour and 4-hour timing signal in NTSC or a
3-hour and 6-hour one in PAL is constantly
negative / falling.
3. OPERATIONS