IPVMU Certified | 08/18/15 01:04am
I guess they technically they 'prefer' DC, since that's what they use ultimately, but if you are running 24VAC already, I would think it best to let the camera bring it down itself, instead of another device.
Maybe there was a different camera inside the dome originally that only took DC, and got replaced. Maybe the slammer just used the law of 'bare minimum effort' in connecting the 233d.
I always ran mine on 24VAC, the loss running 12VDC was too great and would make the PTZ movement impossible. I believe the inline adapter that it came with was 3A, so 500ma sounds light.
According to Axis, that converter should be removed and the cameras should work fine using the 24VAC supply.
I have no idea why they converted 24VAC (which the camera accepts) to 12VDC (which is below its input voltage range). Chris may have the right idea, that something else was in the housing at some point.
IPVMU Certified | 08/21/15 02:01pm
Well I did get a little information which kind of sends the message that they didn't know what they were doing. The same contractor that installed the cameras also installed the fiber for the parking lot in question. I guess there were a lot of fiber issues. That was OK though because they had a 5 year maintenance agreement. A year after install they went out of business.
I was thinking about going to all remaining working 233D cameras in the parking lot and making sure if these devices are still present in those, they be removed.
Thanks for the replies back Ethan and Chris.