Vantech VP-454CVI User Manual page 78

Is there any heaven current installation surrounding and external video device, heavy current surging
video cable, caused the DVR can not work properly and the system halted;
06：Firmware upgrade failure?
U drive is not good compatible with the DVR, cause the DVR can not detected it, suggested to try one
or two more different kind of U drive in the market;
USB interface is not good;
The voltage hunting fearfulness during the system firmware upgrade in progress;
07：Why the display color is black and white in TV and VGA monitor?
Check the video system is it matching the video input, DVR, TV or VGA monitor, if there is not on all
fours, please set the video system mode in auto automatic recognition;
08：Why does nothing display on the TV or VGA monitor?
①please make sure if the power supply of TV or VGA monitor turn on or not; if the illumination located
in the lowest status?
②if the video connected with TV or VGA monitor properly? Check if there is any video signal input?
And make sure the line faulty or not?
09：Why does the video like water wave, to appear obstruction distortion?
①if there is short circuit, open circuit or insufficient solder and connection failure of video cable?
②If the video cable obstruction by high voltage interference, please separate the video and high
voltage in linkup cabling, at the meantime, please select the better quality, shield video cable for the project;
③In the whole system, only select the central point to grounding, please do not multi port to grounding,
then, cause the common mode obstruction, please connect the screw in DVR rear panel to grounding;
④Check if there is the become old problem in the camera or TV monitor and cable?
10：Why do the color of live video and record video data distortion?
①Make sure the input and output video parameter of main menu setting correct;
②Make sure the connection is correct;
11：Why does the video skew became deformed, color cast?
①Make sure the VGA cable and DVR be connected with grounding properly;
② The DVR working atmosphere temperature high, or no good in radiating, cause the VGA chipset
working exceptional, or the mention circuit parameter is abnormal;
12：Why does the record video playback in mosaic under local DVR?
①The recording parameter setting is too low cause the record video quality overall down, sometime
appears to mosaic;
②The record video file locates where there is a bad sector in a hard disk drive, it will cause the mosaic
raising;
Postscript
HDCVI Product parameter Table
Compress
standard
Video in
4CH
H.264 baseline profile@L3.1
BNC（1.0Vp-p/75Ω）
8CH
BNC（1.0Vp-p/75Ω）