JVC VR 601 - Manual (Page 22)

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4. BASIC OPERATIONS
This section shows you how to operate and manage the DVR when it gets in the way.
4.1 Configuring Recording Settings
Recording Time settings (Recording Rate and Picture Quality Setting)
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 80GB hard-disk drive at certain refresh rates and the corresponding image quality. With one or
more hard-disk drive(s) in operation, please calculate the recording time using the table below in
accordance with your requirement. For a NTSC unit, for example, if the unit is set to record images with
BEST quality at a 60 fps record rate, normally a 80GB hard-disk drive will be filled in 15 hours (See the
gray area in the table). If the total capacity of 240GB hard-disk drives is in use under the same refresh
rate and picture quality, it will be filled in 45 hours (3 times the rate of a 80GB hard-disk drive).
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 methods detailed below.
Connect the SW. OUT terminal in 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.
NTSC (MUX ON)
Audio ON Possible Recording Time HDD=80GB ( hour )
BEST 44.4 95.8 208.5 380.6 598.5
HIGH 55.3 118.8 255.7 459.6 708.9
STANDARD 73.2 156.1 330.5 580.0 869.5
Image
Quality
BASIC 108.4 227.6 467.3 785.9 1124.0
Refresh Rate (Field/Sec)
60 30 20 12 5.5 2.4 1.22 0.71 1/4 1/6 1/8
REC Time Mode
2 hr 4 hr 6 hr 12 hr 24 hr 48 hr 96 hr 168 hr 480 hr 720 hr 960 hr