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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 hard-disk drive.
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
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 HIGH quality at a 60 fps
record rate, normally a 20GB hard-disk drive will be filled in 3 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 12 hours (4 times the rate of a 20GB 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 is can be done by either of methods detailed below.
(1) If a 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) Connect the SW. OUT terminal 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 change the
recording speed, the multiplexer will automatically adjust the record to match. A 2-hour timing signal in
NTSC or 3-hour one in PAL is constantly negative/falling.
NTSC System
Possible Recording Time HDD=20 Gigabytes
HIGH 3 hr 9 hr 18 hr 36 hr 72 hr 144 hr 252 hr 720 hr 1080 hr 1440 hr
STANDARD 4.5 hr 13.5 hr 27 hr 54 hr 108 hr 216 hr 378 hr 1080 hr 1620 hr 2160 hr
Image
Quality
Setting
BASIC
6 hr 18 hr 36 hr 72 hr 144 hr 288 hr 504 hr 1440 hr 2160 hr 2880 hr
Refresh Rate (Field/Sec) 60 20 10 5 2.5 1.25 0.63 0.25 0.16 0.13
REC Time Mode 2 hr 6 hr 12 hr 24 hr 48 hr 96 hr 168 hr 480 hr 720 hr 960 hr