You guys are missing a key point. The OP stated he tried the cam via the cable in question on a different POE switch and had the same problem.
Ethernet Cable Problem
- Thread starter regone
- Start date
I have been in this kind of situation before, Sounds like the OP is running out of options, I have used your Idea of using a power injector or 12v power at the camera itself at the end of the run, that should tell it all.
Then the wire or camera is bad.
A damage/kinked/pinched cable is most likely the issue.
But the camera has to be taken down and plugged into a known good switch with a known good jumper to really test it.
I guess you did not read the thread. Cam works on a short cable plugged directly into the POE switch. Cam does not work using the installed cable plugged into the original POE or a different POE switch. A second cam does not work using the installed cable.
He has re-terminated the ends. Still not working.
It is the cable.
I did. I was just rephrasing the troubleshooting that should have been done already.
A tiny pinhole anywhere in the covering of Cu clad Al cable is death to the cable. Sometimes it takes years for the Al to oxidize to the point of failure. If you're serious about your system, don't use it.
Personally, I love climbing up and down a 25 ft ladder and holding a the cable with one hand and stapling with the other on an overhead installation
Even if it's not Cu clad Al that's what you're going to have to do. It's the cable.OSD
Had the same problem went through same fault finding it was the camera faulty in the end this was done by replacement (desperation) sorry not a good answer for you
fenderman
Staff member
- Mar 9, 2014
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It cannot be the camera if it works fine on a short cable as is the case with the OP.
I can see a scenario where the power regulator in the camera is heading south (eg. a capacitor going bad) and the voltage after the IR drop is on the wrong side of the hairy edge.
Testing with a 150' length of cable may be prudent. I'd do that for sure before climbing up on the ladder again!
-OSD
fenderman
Staff member
- Mar 9, 2014
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I have never seen this, ever. When there is an issue like this, it is always the cable. Most relevant is the part where he says that he tried a new good working camera and it failed as well. Temperature is only a factor if you have a bad crimp or a damaged cable, and therefore breaks connectivity in the cold. A proper copper cable running poe will not be affected for two reasons. First, while temperature can effect conductivity, it is higher temps that will reduce it not lower. Second the poe negotiation will address the amount of power needed to be supplied.
I hear you what I’m saying is I did your tests including changing cable and after a few minutes in it’s installed position it failed and we had to order a second camera to prove it We lost out but didn’t lose our customer
fenderman
Staff member
- Mar 9, 2014
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You tested a new camera and it failed. A new cable and it failed. The only other options are a bad poe switch/injector, some sort of severe electrical interference introduced or junk cable or poor termination skills on your end. Buy a premade cable and test with another switch.
If it were me I would test the voltage output of the POE at the camera. If it is near or less than the camera requires add an injector. Some POE switches provide poor documentation on rated POE output so if you are at the edge of sufficient an injector can solve the problem.