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Comparison Dahua DH-XVR5108C-S2 vs Dahua DH-HCVR5108C-S3

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Dahua DH-XVR5108C-S2
Dahua DH-HCVR5108C-S3
Dahua DH-XVR5108C-S2Dahua DH-HCVR5108C-S3
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Typehybrid HVR (HDVR)hybrid HVR (HDVR)
Camera connection8 channels8 channels
Hybrid mode (AHD+IP)8+4 cameras
IP only12 cameras
Features
Features
motion response
mobile app
motion response
mobile app
Connectors
BNC video input88
RCA audio input11
RCA audio output11
USB 2.022
HDMI1
/maximum 1920x1080 px/
VGA1
/maximum 1920x1080 px/
LAN11
Video recording
Resolution (all channels)720x576 px960x1080 px
Frame rate25 fps
Video compression formatH.264, H.264+H.264
Max. resolution (IP)2 MP (~1920x1080 px)
2 MP (~1920x1080 px) /15 frame/s/
Drives
Number of SATA11
Max. total capacity8 TB6 TB
General
Power supply12В12В
Power consumption10 W10 W
Operating temperature-10 °C ~ +55 °С-10 °C ~ +55 °С
Maximum humidity90 %90 %
ONVIF
CMS
Dimensions205x211x45 mm205x205x45 mm
Weight0.55 kg0.5 kg
Added to E-Catalogjuly 2018april 2017

Hybrid mode (AHD+IP)

The number of cameras supported by the recorder when operating in hybrid mode — that is, when using traditional (AHD) and network IP cameras at the same time. For details about hybrid recorders, see "Type". And in this paragraph, the first number indicates the number of conventional cameras, the second — IP devices: for example, the entry "4 + 2" indicates that this model can simultaneously receive a signal from 4 conventional and 2 IP cameras.

Also note that some hybrid recorders allow different ratios between the number of cameras of different types (with the same total number of cameras). For example, a 12-channel model may have 6+6, 8+4, and 10+2 hybrid modes. In such cases, this paragraph takes into account the mode with the largest number of AHD cameras; for the model described in our example, “10+2” will be written in this paragraph.

It is also worth mentioning that when working only with IP cameras, the hybrid recorder can support a greater number of video channels than in hybrid mode — for example, in the “2 + 8” format model, the number of supported only network cameras can reach 16. This information is specified in "IP Only".

IP only

The number of cameras (video channels) supported by the hybrid recorder (see "Type") when working with IP cameras only.

Most often, this number corresponds to the total number of channels available in hybrid mode (when IP cameras are combined with traditional, so-called AHD cameras). For example, for a DVR with 8+2 hybrid mode (10 in total), the number of cameras in IP only mode is also usually 10. However, there are exceptions: some models in pure network mode are able to work with more cameras than in hybrid. For example, the same hybrid format "8 + 2" can be combined with support for 16 or even 24 network cameras at the same time.

Resolution (all channels)

The highest resolution in which the recorder can record video when a signal is received from all channels simultaneously. If cameras are not connected to some channels, the recording resolution may be higher (see “Maximum Resolution”).

Higher resolution has a positive effect on detail, but takes up more space and requires more computing power for processing, which accordingly affects the price of the registrar.

Frame rate

The highest frame rate in the recorded video that the recorder can support when recording from all available channels simultaneously. If not all channels are occupied by cameras, this figure may be higher.

The minimum required for comfortable viewing is 24 fps. And in the most modern video standards, the frame rate can be much higher — 50 – 60 fps. Higher values result in better quality and smoother video that allows you to clearly see fast movement; however, such video takes up more space and requires powerful hardware, which affects the price of recorders.

Video compression format

Standards (codecs) used by the recorder to compress the recorded video.

This parameter is important when viewing recorded materials on another device — for example, a media centre, into which a "flash drive" with files from the recorder is inserted. For normal viewing, it is necessary that the player supports the appropriate codec — otherwise the video will be displayed with distortion or will not work at all. Technical details on various standards can be found in special sources.

Note that if you plan to view the materials on a computer, you can not pay much attention to this parameter: most modern operating systems have extensive built-in sets of codecs, and if you don’t have the right codec, you can easily find it on the Internet.

Max. total capacity

The largest total storage capacity with which the recorder is able to work correctly. By default, it is indicated only for internal media with a SATA interface (see above), however, in some models, data is also provided separately for external devices connected via eSATA.

Note that the limit on the total capacity follows from the fact that each individual port has its own limit on the capacity of the drive. In this case, the maximum capacity is distributed equally between the ports. This should be taken into account when choosing drives for the registrar: for example, in a 32 TB model with 8 SATA connectors, the limit for each connector will be 32/8 = 4 TB. This means that installing two internal 8 TB disks in such a registrar will not work, although their total capacity will be less than the maximum.
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