Approach Tech DVR-3024M - Manual (Page 16)

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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
requirements. For an NTSC unit, for example, if
the unit is set to record images with the BEST
quality at a 30 Frame/Sec record rate, normally a
80GB hard-disk drive will be filled in 41 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 123 hours (3 times the rate of a
80GB hard-disk drive).
NOTE:
1. Recording times on the tables below are
estimated. For the actual available recording
time of a recording configuration, refer to the
system information of the DVR. (Please refer to
section 2.3 system information for more
details.)
2. There is no audio function at the refresh rate
in NTSC: 1.2 fields/sec ~ 1 fields/ 16 sec. There
is no audio function at the refresh rate in PAL:
1.4 fields/sec ~ 1 fields / 16 sec.
Possible Recording Time HDD=80GB ( hour )
Record Setting
NTSC PAL
BEST 41 57.3 41 57.3
HIGH 47.8 71.6 47.8 71.6
STANDARD 57.3 95.4 57.3 95.4
Image
Quality
BASIC 71.6 127 71.6 127
Refresh Rate (Frame/Sec) 30 15 25 12.5
3. OPERATIONS