Chinese POE protocol differences??

I just purchased a 4.5" 1080P Outdoor PTZ IP camera with 20x optical zoom. I am NOT any sort of expert on this. The camera came with the standard CAT6 connector  and a 12v power plug. In my short experience with surveillance systems I have never had to use the power connector. I simply use POE and it has worked fine. This particular cam is not performing the same way, DC power wise. The POE switch does not light up when this cam is plugged it. I MUST use the 12 volt connector. I asked the manufacturer about this and he went in to detail way above me that supposedly details a "difference in protocol" between Chinese cameras and U.S.A. cameras. Does this make any sense to anyone? I can wire the CAT6 connectors anyway they want me to but I really do not want to run an additional 12 volt cable when I just finished fishing the CAT6 through. Can anyone shed some light on this for me?

PT-PTZ1384XM-L is the only number on the cam that might be a model number.  NETCAT appears to be the brand name
ptz-zoon.jpg
Need -a- ClueRESEARCHERAsked:
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Wayne88Commented:
You will need a power source to power up the camera.  POE simply means that the power is carried via the ethernet cable.  How are you powering the camera?
Gerwin Jansen, EE MVETopic Advisor Commented:
Network connection uses 4 of the 8 wires in the cable. You could use 2 of the other 4 to create a custom cable. PoE uses 48V instead of 12V so you would only be able to use that cable for your camera. Depending on the length of the cable you may loose some voltage (power) so there is no way for sure to tell you whether the custom cable will work or not. PoE details are here:
https://en.wikipedia.org/wiki/Power_over_Ethernet
Since pins 1,2,3 and 6 are used for network, you could use pins 4 and 7 for your 12V custom 'PoE' cable.
Gerwin Jansen, EE MVETopic Advisor Commented:
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Wayne88Commented:
"PoE uses 48V instead of 12V so you would only be able to use that cable for your camera."

If the camera ask for a 12V power source and you connect a 48V power adapter to it you will burn out the camera.  Whatever the camera specification asked for that's what she should use.  If it spec a 12V power source is needed it's what she should use.  Not higher voltage.

"Note that the device is not advertised with PoE:" - good point.

I think she mistaken the power plug as POE.  Need-a-Clue, can you verify with the camera manufacturer that this device support POE because it doesn't look it.  The black plug that came with the camera is not a POE injector.  I have provided an example of what a POE injector look like.  Please see attached.

From her post, it doesn't seem like she used the power connector that came with the camera so the problem is the camera is not getting power.  She needs to plug a compatible power adapter to the camera go power it up.  I would find a 12V power adapter and connect it to the camera.
power-plug.JPG
poe-injector-example800.jpg
Gerwin Jansen, EE MVETopic Advisor Commented:
@wayne88 - I am not suggesting to use PoE for this camera, I am suggesting to build a custom cable that has a 12V power supply added.

The cable would have to be custom at both ends. And because the asker already tried to connect to a powered switch (didn't work) the device would get damaged by 12V.

@Need-a-clue - Which cables / connectors etc did you get with the device? Can you post some more info?
Need -a- ClueRESEARCHERAuthor Commented:
The camera came standard with a normal female cat6 connector and also the "standard" bullet connector for power. Yes, they do NOT state that this is a POE camera. I just want to make it a POE camera. I am sure that not all of the 8 cat6 conductors are being used for the signal.  I was wondering if there were an easy way to determine which conductors were not being used. I have another similar camera and it was much easier to disassemble than the one I have now. It was easy to see which 4 leads were unterminated. I bridged those 4 into one pair for lower resistance and the system works perfectly. I suppose, if necessary, I could disassemble the camera and look for the unterminated leads once again. It just seems so very simple that I don't know why manufacturers do not do this on all cameras with the stipulation of loss of current handling capability at whatever length. Incidentally, this camera is 12 volts. It seems like a truly incredible bargain at around $200. that I could not let it pass by. The company in China is knowledgable but somewhat non customer friendly. I asked for a schematic and never got any answer at all.
Need -a- ClueRESEARCHERAuthor Commented:
I suppose another way of solving this problem would be to get a schematic of the POE switch I use and determine from that which leads are unused. Thanks all for your opinions. I appreciate you!
Gerwin Jansen, EE MVETopic Advisor Commented:
The PoE specs and wiring details are all nicely specified in the wiki article I referred to. Look for the table in the middle column where you can see exactly which wires are not used.

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Need -a- ClueRESEARCHERAuthor Commented:
Sorry for the late rating / reply. I had a death in my family and had to travel & consume much time.
Gerwin Jansen, EE MVETopic Advisor Commented:
Hello Need-a-Clue, no need at all for excusing yourself. Thanks for your reply.
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