2 Hikvision cameras close to each other not working simultaneously inside NVR

[Caraman Ionut]

Hi everyone!

I recently installed a HIKVISION SYSTEM with a nvr with POE with ftp cables and 8 cameras for now.

5 cameras DS-2CD1123G0-I 2MP
3 cameras DS-2CD2T43G0-I5 4MP
NVR DS-7616NI-K2/16P

I have a problem , 2 of the cameras DS-2CD2T43G0-I5 which are installed one next to the other outside and have the cables in the same junction box

Camera on the left ---- JUNCTION BOX ---- CAMERA ON THE RIGHT

They do not work at the same time on NVR. Once I start the NVR and are all 8 plugged in ,those 2 cameras will not start, I do not get the link lights at the back
of the NVR lit up. Once I remove one of the cameras, the other one comes online. Then if I put that back in nothing happens , the first one stays online,
the second will not start.

So if I start with both none work ,if I leave only 1 out of the 2 , it will work , either one. The other 6 cameras are working perfectly in any condition.

So I have the problem only with these 2, can they interfere somehow because I have the cables on the wall together and in the same box , is there any chance
they could interfere or something ? This is very weird.. I have checked ip settings , set manual ips using SadpTool , did a firmware upgrade on the nvr...
No change, I don t know which logs to look at and what to do , I couldn t find this problem online anywhere.

I connected to camera and reset to factory settings , changed ip from NVR and from camera, enabled and disabled dhcp... no change, they don t work simultaneously.

Inside NVR I get them as offline, Sadp will see both offline , once I remove one , the other will appear online. I tried switching ip of ONE to get the other working after reboot , but regardless of ip address,
only one works . I have rebooted them and the nvr several times, I don t know what else to do and check.


Does anyone have any recommendation or any help please?

 

[alastairstevenson]

What wiring scheme did you use for the ethernet cables?

 

[Caraman Ionut]

I have used T568-B for all the cameras.

 

[alastairstevenson]

I have used T568-B for all the cameras.

OK, so it seems that you have correctly preserved the twisted pairs, which would reduce interference.

 

[Caraman Ionut]

The cables run along for about 35 metres on walls and diff spaces.. can that interfere?

 

[Caraman Ionut]

The cables run along for about 35 metres on walls and diff spaces.. can that interfere?

Actually I ll put the ladder up now and put new rj45 on both and make the cables bit shorter because they barely fit in the junction box and see what happens after.

 

[Caraman Ionut]

I have found that it s a wiring issue, when I use a rj 45 cable tester it shows ok 1 to 8 , but I think the cables somewhere on some corner are bent too much or damaged and they touch each other or something , the cameras work perfectly with other cables. I m only thinking to try and wire one as 568b and one as 568a maybe that would work , so I wouldn`t have to pull all the 35 m each wire again...