221
Maximum switch currency
1A
Insulation
Between touches with same
polarity
1000VAC 1minute
Between touches with different
polarity
1000VAC 1minute
Between touch and winding
1000VAC 1minute
Surge voltage
Between touches with same
polarity
1500V (10×160us)
Length of open
time
3ms max
Length of close
time
3ms max
Longevity
Mechanical
50×106 times (3Hz)
Electrical
200×103 times (0.5Hz)
Temperature
-40
℃
~+70
℃
3.8
RS485
When the DVR receives a camera control command, it transmits that command up the coaxial
cable to the PTZ device. RS485 is a single-direction protocol; the PTZ
device can’t return any
data to the unit. To enable the operation, connect the PTZ device to the RS485 (A,B) input on
the DVR.
Since RS485 is disabled by default for each camera, you must enable the PTZ settings first.
This series DVRs support multiple protocols such as Pelco-D, Pelco-P.
To connect PTZ devices to the DVR:
1. Connect RS485 A,B on the DVR rear panel.
2. Connect the other end of the cable to the proper pins in the connector on the camera.
3. Please follow the instructions to configure a camera to enable each PTZ device on the
DVR.
Figure 3-3
3.9
Other Interfaces
There are still other interfaces on the DVR, such as USB ports.
485 Port
Содержание HCVR2108C-S2 Series
Страница 1: ...Dahua HDCVI Standalone DVR User s Manual Dahua HDCVI Standalone DVR User s Manual V1 8 2 ...
Страница 11: ...x APPENDIX F COMPATIBLE WIRELESS MOUSE LIST 479 APPENDIX G EARTHING 480 ...
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Страница 351: ...338 Figure 4 145 Figure 4 146 4 11 4 1 2 2Trigger Snapshot ...
Страница 353: ...340 Figure 4 148 Figure 4 149 4 11 4 1 2 3Priority ...
Страница 370: ...357 Figure 4 170 For digital channel the interface is shown as below See Figure 4 171 Figure 4 171 ...
Страница 384: ...371 Figure 4 188 ...
Страница 402: ...389 Figure 5 26 5 8 2 Network 5 8 2 1 TCP IP The single Ethernet port interface is shown as in Figure 5 27 ...
Страница 419: ...406 Figure 5 55 Figure 5 56 ...
Страница 432: ...419 Figure 5 71 Figure 5 72 ...
Страница 439: ...426 Figure 5 81 Figure 5 82 Figure 5 83 Please refer to the following sheet for detailed information ...
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