Ronald

Sounds good! Well, not really as I find it quite dangerous up there. I still haven't found proper safety harness in case I fall off the ladder. Regards, -Ron

My client is located some 75 km north of Montreal. The coldest temperature I've seen there is -38 degrees Celsius, but temperatures below -25 degrees is rare nonetheless, probably occurring only a few days per winter season. Well, the camera housing is sealed for the most part, but there's a fan at the back with a vent opening below it. So, no doubt humidity could get in there. When humidity freezes, God knows what can happen. Regards, -Ro n

Hi, I have a client at a campground site that has a box camera installed in a heated enclosure, but during off-season (winter), the power is off throughout the premises, therefore the camera is not longer heated, but then again the camera is OFF as well. Can humidity and cold somehow affect or damage the camera for when it is turned on again the following spring? I usually take it off, but since it is located at 20 ft high on a bending pole, I am hoping I don't have to. Can someone confirm? Regards, -Ron

I'm responding to questions from the original poster of this thread, I'm not sure what you mean? Sorry, I didn't realize that I would be receiving email notifications for this topic's messages even though they are not directed to me personally. Ronald

You must be replying to the wrong person.

You are replying to the wrong person. Ronald

Pas de problème. Oops sorry, I meant to say "nolo problemo". Ron

Never mind. I was able to pull it through. Everything is working now. Regards, Ron

I still have a problem with the RS-485 connections though. I used (it was already there) Cat5 UTP cables to run from the PTZ control keyboard to the camera, in series. The last PTZ cam is terminated via dip switches. Can't pan or tilt! I dismounted the last PTZ cama and tested it near the control keyboard, it works fine that way. Any ideas? If I were to double or triple the number of wires utilized within the Cat5 cable, would that help? I know there are high voltage (240v) power lines running nearby in a metallic pipe of its own, for a short distance of about 3m. Regards, Ronald

>^If it's a transformer-type PSU, the line and output grounds will - or SHOULD - be physically separated anyway. < Ok, I did test the small in-line power supplies. They provide more than adequate voltage (12.39v) under load. Those are not grounded to anything. Anyhow, I ended replacing those with one big 9-port 5A power supply distribution box (w/ fuses). The interference is gone! Can anyone explain how the in-line power supplies could do such a thing, especially since when I plug them to the cameras nearby (less than 2m distance) everything works fine, but when I extend the output cable to 15~25m distance then I get ghosting horizontal lines in images? Regards, Ronald

is "residencial" in spanish?

>you could also try disconecting the earth to the post and psu.< The 12VDC PSU is just a in-line adapter, can't remember if the 120v side has a three-prong plug or not, I presume it does. As for the post or pole, you mean for me to find something that is grounded to it and remove it? > i take its 24vac. most domes with heater running pull around 3to4 amp?is your psu up to the job?< The PSU is a 12vdc rated at 3.3a. It came along with the PTZ. If there is a heater, I don't know where it is. Nonetheless, the PTZ housing is rated for -35 celcius. Regards, Ron

I guess I could use grey duck tape then. Ron

Ok, thanks! I will check this out on-site. No screws go through the pole, so adding a round piece of plastics around the pole should not be too difficult. Not sure how thick it has to be though. As for the possibility of high voltage power lines interferring, what remedy would there be? Shielding the PTZ cables in metallic flexible pipe? Regards, Ronald

The power supply reads 3.35A. The distance between the PTZ and the power supply is roughly 12 meters. The power cable is 16 AWG. The distance between the DVR and the PTZ is about 50m via RG59 coax. I cannot pan and tilt the camera at this point. Reason? Possibly because the PTZ is set to UNTERMINATED via the dip switches. I have yet to power the second PTZ which is TERMINATED. I presume that's the cause, I don't know for sure as I really don't have much experience with PTZ's. Ronald