Maxtor 4W040H3 Technické informace stáhnout pdf (Strana 16)

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

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 65 66

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Maxtor 4W040H3 Technické informace Strana 16