Digital Video Recorder Comparison Chart |
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Video Signal |
Support NTSC & PAL Standards |
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Operation System |
Embedded Linux Operating System |
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Quadruplex Function |
Simutaneuos Record / Playback/ Network / Backup |
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Video Input |
4 |
8 |
16 |
16 |
4 |
16 |
4 |
8 |
Video Output |
1 Main Monitor, 1-S-Video |
1 Composite / 1 S-Video / 1 VGA / 1 Spot Out |
1 BNC / 1 VGA / 1 S-Video / 1 Spot Out |
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Loop Out |
4 |
8 |
N/A |
16 |
4 |
16 |
4 |
8 |
Live Display |
1, 4, PIP |
1, 4, 6, 8 |
1, 4, 6, 8, 9, 13, 16 |
1, 4, 7, 8, 9, 10, 13, 16 |
1, 4 |
1, 4, 6, 8, 9, 13, 16 |
1, 4 |
1, 4, 6, 8 |
Playback Displays |
1, 4 |
1, 4, 6, 8 |
1, 4, 6, 8, 9, 13, 16 |
1, 4, 7, 8, 9, 10, 16 |
1, 4 |
1, 4, 9, 16 |
1, 4 |
1, 4, 6, 8 |
Video Compression Method |
Wavelet |
MPEG 4 |
MPEG 4 |
Wavelet |
Adavanced MJPEG |
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Average File Size |
8 ~ 24 KB |
3 ~ 18 KB |
4 ~ 18 KB |
8 ~ 24 KB |
5 ~ 18 KB |
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Live Display Resolution |
720 x 480 (NTSC), 720 x 576 (PAL) |
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Live Display Rate |
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| - NTSC |
120fps |
240fps |
480fps |
480fps |
120fps |
480fps |
120fps |
240fps |
| - PAL |
100fps |
200fps |
400fps |
400fps |
100fps |
400fps |
100fps |
200fps |
Max Recording Speed & rate |
60fps |
480fps |
120fps |
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Max Recording Speed Per Channel |
15fps |
7.5fps |
3.75fps |
30fps |
30fps |
7.5fps |
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Alarm In / Out |
4 / 1 |
8 / 1 |
16 /1 |
16 / 4 |
4 / 1 |
16 / 4 |
4 / 1 |
8 / 1 |
System Control |
Key Buttons, IR Remote Controller, Remote Client PC |
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Audio |
1-ch. (Line In, Line Out) |
16-ch(In) / 1-ch(out) |
4-ch (2way comm.) |
1-ch. (Line In, Line Out) |
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Power Failure Recovery |
Auto Reboot while Maintaining Previous Record Settings |
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Alarm Notification |
Automatic E-mail: External Alarm, Video Loss, Power Loss, HDD Failure |
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System Utility |
2-Level Password / Auto Lock / Disk Format / Disk Check / Fan Lock Detection |
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External Backup Device |
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| - USB 1.1 |
No |
No |
No |
No |
No |
No |
Yes |
Yes |
| - USB 2.0 |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
No |
No |
| - Built-in CDRW |
No |
No |
No |
Yes |
Yes |
Yes |
No |
No |
Communication Port |
USB, RS-232C, RS-422/485, Ethernet |
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Internal HDD Slot |
2 |
2 |
2 |
2 |
1 |
1 |
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Hot Swappable HDD |
No |
No |
No |
No |
No |
No |
Yes |
Yes |
Storage Capacity |
Up to 800GB |
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Network Interface |
LAN, WAN, Internet, Dynamic/Static IP |
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Remote Client Software |
Proprietary Software or Web Browser (IE 6.0) |
Multi-site Proprietary Software |
Proprietary Software or Web Browser (IE 6.0) |
Multi-site Proprietary Software |
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Supports Dynamic/Static IP |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
IR Remote Controller |
Control Upto 99 DVRs |
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Power |
100 or 230 VAC, Selectable |
Free Voltage |
DC 12 Adaptor |
100 or 230 VAC |
100 or 230 VAC, Universal |
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Dimensions (inch) |
14.2 x 13.25 x 4.25 |
17x17.7x4 |
14x14x1.7 |
17x17x3.5 |
13.2 x 14.6 x 2.8 |
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Weight (pound) |
13.23 |
19.2 |
11 |
18.1 |
13.2 |
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