Camera detection issue - extremely weird

[Ori Givati]

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

 

[Ori Givati]

Yes...

 

[Ori Givati]

Is it possible that something next to the cable interfers with the signal?

 

[fenderman]

Is it possible that something next to the cable interfers with the signal?

Did you wire using the 568 standard?

 

[Ori Givati]

I wired like this:
White orange, orange, white blue, blue, white green, green, white brown, brown.
Same on both ends

 

[58chev]

Have you tried the camera on just a short patch cable to your NVR to eliminate if the camera has an issue?

 

[fenderman]

I wired like this:
White orange, orange, white blue, blue, white green, green, white brown, brown.
Same on both ends

no good...use the 568B standard. You must follow the proper standard or it wont work.

 

[Ori Givati]

DONE. problem solved. by the way, I have two other cameras on which I used the same order and it worked

 

[FrankMCN]

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.

 

[Ori Givati]

Does it harm the cameras themselves?

 

[FrankMCN]

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]

Ok. Thank you

 

[fenderman]

DONE. problem solved. by the way, I have two other cameras on which I used the same order and it worked

that is because the runs were shorter or there is less interference....you should fix them as well...you are very likely dropping packets.