IP cam powered through CAT5e distance..

[kisk]

Short range tests (<10ft) work great when supplying power to this IP cam over cat5e, however not when running only about 60ft.

Camera is rated 12v. Adapter that came with it is rated @ 1000ma (1A). I was expecting a bit of voltage drop over the 60ft, but only went from 12.2v to 11.9-12v @ 60ft.

My cat5 is using two pairs for - and two pairs for +. What is the reason for this not working? I wouldn't think a drop in 0.3v would make that big of a difference. I thought it might be the low amperage rating of the dc adapter but I tried a 12 @ 5A adapter and ended up with the same results. Is it purely a voltage thing? Should I try a 12.5v adapter?

BTW, I know there are more optimal ways of supplying power to this cam (the right way). I just want to know why this isn't working with my current config. I'm not the greatest with electrical.

Thanks!

 

[fergeeks]

I think only certain kinds of IP cams will work off a power supply; your best bet is with a POE switch I'm afraid. Tested two IP cams the other day; one a Acti cube cam and the other a acti outdoor dome. Cube wouldn't work with power supply but the dome would with the power adaptor. Both work perfect on my Poe.

 

[shamrin]

Are you sure your 60ft cable is wired correctly? The longest POE run I've done is over a 45ft but I've seen implementations going 90m. Maybe it's a problem with that particular cable?

 

[fergeeks]

We do 250ft runs all the time with no issues.

 

[LifelineIT]

I've got an ~80 foot run at my home using cat5 + baluns, with no issues whatsoever. You may want to double check which pairs you're using for what.

 

[fergeeks]

I've got an ~80 foot run at my home using cat5 + baluns, with no issues whatsoever. You may want to double check which pairs you're using for what.

If you are using baluns then that sounds like analog over cat5. We just completed a install of 75 cams with the longest analog run over cat5 being 1200ft. The only problem we ran into was voltage drop from the power supply so we ended up putting a new power supply closer to the cameras.

 

[mikeroq]

Sounds like to me he is rigging his own "POE" by wiring up 10/100 to two pairs and using the unused ones for power spliced into the adapter that came with the camera.

If the camera really supports POE it will have a POE adapter in the box. I've got POE access points going over 100' with no issues.

 

[LifelineIT]

Doh, you're right. I totally glossed over the "IP" part, sorry about that.