Q-See QC3016 Wartungshandbuch PDF herunterladen (Seite 41)

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7.2 CALCULATING THE RECORDING CAPACITY OF A

HARD DISK DRIVE

While the physical data capacity of a hard drive is ﬁxed, how much video you can record upon it depends

on your recording conﬁgurations. Higher quality recordings will take up more space on the drive and setting

the DVR to record for more frequently will ﬁll it up more rapidly.

To determine the optimal capacity for your purposes, the chart below to estimate the size of hard drive that

you’ll need.

VIDEO

FORMAT

RESOLUTION FRAME

RATE

(FPS)

VIDEO

QUALITY

BIT

RATE

(kbps)

SPACE

USED

(MB/h)

NTSC CIF 30 Highest 1M 465

Higher 768k 297

Medium 512k 230

Low 384k 173

Lower 256k 115

Lowest 128k 56

D1 Highest 2M 910

Higher 1.5M 712

Medium 1M 468

Lower 768K 297

Lowest 512K 241

PAL CIF 25 Highest 1M 466

Higher 768k 295

Medium 512k 235

Low 384k 175

Lower 256k 112

Lowest 128k 56.4

D1 Highest 2M 915

Higher 1.5M 700

Medium 1M 465

Lower 768K 297

Lowest 512K 241

The formula for calculating the required disk space is:

Total Recording Capacity = Used space per hour (MB/h) x Recording time (hour) x

number of channels

Example: A customer is using the NTSC format (30 frames per second), CIF resolution

with video quality set to Lowest and a total of 16 Channels. He wants the unit to record

continuously for a month. Therefore, the calculation will look like this:

56(MB/h), x 24 (hours/day) x 30 (days) x 16 (channels) = 645,120MB or 650GB

Installing a 750GB SATA hard drive should provide enough space for one month’s continuous

recording time at those settings.

A.1 TROUBLESHOOTING

1. The DVR does not boot up properly Possible Causes:

a. Input power is not correct, check power supply.

b. Power switch button is damaged.

c. Updated ﬁrmware using wrong ﬁle.

d. Hard drive malfunction or something wrong with hard drive cable.

e. Front panel error.

f. Main board is damaged.

2. DVR often automatically shuts down or stops running. Possible Causes:

a. Input voltage is not stable or it is too low.

b. Hard drive malfunction or something is wrong with the cable.

c. Device is not getting enough power.

d. Front video signal is not stable.

e. Working environment is too hot, or too much dust.

f. System board malfunction.

3. System cannot detect hard drive. Possible Causes:

a. No hard drive is installed

b. Hard drive is damaged.

c. Hard drive cable connection is loose.

d. Main board SATA port is damaged.

4. There is no video output to one or more channels. Possible Causes:

a. Updated ﬁrmware using wrong ﬁle.

b. Brightness is 0. Please restore factory default setup.

c. There is no video input signal or it is too weak.

d. Check privacy mask setup.

e. Combo DVR hardware malfunctions.

5. Real-time video color is distorted. Possible Causes:

a. When using BNC output, NTSC and PAL setup is not correct. The real-time video

becomes black and white.

b. DVR and monitor resolution settings are not compatible.

c. Video cable is too long signal is becoming degraded.

d. Combo DVR color or brightness setup is not correct.

6. Cannot search local records. Possible Causes:

a. HDD ribbon is damaged.

b. HDD has failed.

c. The recorded ﬁle has been overwritten.

d. Record function has been disabled.

7. Video is distorted when searching local records. Possible Causes:

a. Video quality setting is too low.

b. Program read error, bit data is too small. There is mosaic in the full screen. Please restart

the DVR to solve this problem.

c. Hard drive data cable error.

d. Hard drive malfunction.

e. DVR hardware malfunction.

APPENDIX

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