Camera detection issue - extremely weird

Ori Givati

Ori Givati

n3wb
Oct 16, 2017
10
2
Hi All!

I have just set up a new Ip camera system. my NVR is Hikvision DS7600 and the cameras are all Hikvision IR mini dome.
Everything works fine. I connected all the cameras and the LAN connection, I see the live video on the screen and all, BUT! On one specific cable the NVR doesnt detect the camera. I changed the entire cable, changed the plugs like 3 times, changed cameras, and it still doesnt work. When I connect the camera it turns on, sometimes the NVR tries to detect it but fails.

Any ideas on what can cause this?

Thanks a lot
 
I wired like this:
White orange, orange, white blue, blue, white green, green, white brown, brown.
Same on both ends
 
Have you tried the camera on just a short patch cable to your NVR to eliminate if the camera has an issue?
 
DONE. problem solved. by the way, I have two other cameras on which I used the same order and it worked
 
Yeah the wiring order is just wrong, you're actually splitting the blue & green pairs causing loads of signal loss, interference pickup and possibly inducing crosstalk, you may have just got lucky with the other camera's or the're more tollerant but its still wrong.
 
interference won't 'hurt' the camera and keeping your colours the same at both ends will prevent any damage on the power side - a problem could occur if you one day replace a RJ45 plug at one end with wrong wiring at the other (missmatched), you could damage the camera or poe supply (nvr/switch).
 
Ori Givati said:
DONE. problem solved. by the way, I have two other cameras on which I used the same order and it worked
Click to expand...
that is because the runs were shorter or there is less interference....you should fix them as well...you are very likely dropping packets.
 
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