No non-IP camera forum?
I have a AMC4KDM28-W 4k 8mp camera and the night vision is powering the camera off and on when dark. During the daytime it works, but there are horizontal lines running across the video. It is set to CVI and I am using a Amcrest 4K DVR (AMDV8M8-H5) with a Amcrest 12v power supply for the AMC4KDM28-W. This is the second camera that has been like that, returned the other to Amazon. I have a short run with a 75ft cable, power is steady 12v at the camera. When at night I hear the camera clicking off and on with the IR lights doing so at the same time. If I shine a light at the camera, it powers on without the IR lights. This does it in all modes, CVI, AHV, TVI and CVBS.
Also the quality of the video is no where near as good as it should be. I was able to read my license plate on my car with a 1080P camera, I cannot with this 4K camera, plus the horizontal line problem.
Video example.
https://youtu.be/Ggjz8sP2Skk
Night vision causing camera to power off & on.
Re: Night vision causing camera to power off & on.
Hello and Welcome to the Forum
So I have a few questions I need to ask to find out why and what and maybe we can clear this up... Sorry I ramble a little and I give things that I have had happen from time to time in my 25 years + of having cameras.. my First Recorder was a Reel To Reel.. It is kind of like but different the the normal music type...
So I hate to say but 12v at the camera don't mean anything... I can tell you as soon as your camera turns on the IR your 12v is no longer 12v...
So your Lines you are seeing are caused by one of 2 things.. One and doubt it is the issue however one is your using a Pal Camera on a NTSC Recorder.. However what I think is the issue and sadly with the cameras being CVI and most likely sharing a Common Power and Video ground your system has introduced a Ground LOOP..
The power supply your using is it for that Camera? Sorry I didn't really understand the Power Supply! Are you using the one for the camera for the Camera and the DVR? Or for camera only?
What is important and I have to say this many times because some people may not know or maybe they don't understand... That is Power over distance Drops... Power Over Distance with under sized cable drops and can burn out cable or camera or power supply...
So lets say this... Lets say that at day times your camera is using 1/4 of an amp also known as 250ma and then when your IR turns on and I am just tossing out numbers as I have not looked that camera will now draw a little over 1/2 of an amp at lets say 530ma where 500 would be 1/2amp... So then if your using a Power supply that came with 1 camera it is designed for 1 camera in most cases would be 550ma as a little give.. However someone tried to run 2 cameras off the supply because at day time it will work however because at night with IR it needs almost all the power and now it don't work...
However maybe it is a 5amp power supply that came with the DVR and the DVR take 4.55amps and it is working at day times with camera because no IR as soon as night happens it needs the extra that is over the supply power provided and because of this it shuts the camera down as a way to keep the DVR going...
DVR and camera should NEVER BE ON SAME WALL WORT.. Now if it was a Power Distribution Center then that is a different story... This one helps keep all the ground in good reference..
Here is a Test... Please not I don't promote anyone to run any Wall Wort on a Extension cord.. however if you have no power by the camera for testing please take the Power supply to the camera using the best Extension cord you own as I don't expect everyone to have Construction grade ones like mine running 10-3 but if you have a good cord and please a 18-3 at 100' yeah not good for wall wort hope you have either a 10-3 100' or 16 -3 at 25 or 50 at max.. Anyway plug in the wall wort as close to the camera to get it to plug into camera cord not the Cord your using from DVR but the cord that is on Camera before cord.. Power camera there... 2 things Lines should be gone and as long as power to the camera form supply is within specs it should run in IR without issue...
Then line from DVR to camera is bad, to small of power wire, wire inside ground is making connection to other and causing cross talk there is loads of issues that can happen.. Some times you can even hold wire and move it and you will see lines will get worse and better... SOme times the wires can be to close to power wire and the CCTV lines are not good enough to keep out power loop or cross talk... But with Power to the camera at camera all that goes away issue with line or the way it was run and I am going to guess under powered supply
So I have a few questions I need to ask to find out why and what and maybe we can clear this up... Sorry I ramble a little and I give things that I have had happen from time to time in my 25 years + of having cameras.. my First Recorder was a Reel To Reel.. It is kind of like but different the the normal music type...
So I hate to say but 12v at the camera don't mean anything... I can tell you as soon as your camera turns on the IR your 12v is no longer 12v...
So your Lines you are seeing are caused by one of 2 things.. One and doubt it is the issue however one is your using a Pal Camera on a NTSC Recorder.. However what I think is the issue and sadly with the cameras being CVI and most likely sharing a Common Power and Video ground your system has introduced a Ground LOOP..
The power supply your using is it for that Camera? Sorry I didn't really understand the Power Supply! Are you using the one for the camera for the Camera and the DVR? Or for camera only?
What is important and I have to say this many times because some people may not know or maybe they don't understand... That is Power over distance Drops... Power Over Distance with under sized cable drops and can burn out cable or camera or power supply...
So lets say this... Lets say that at day times your camera is using 1/4 of an amp also known as 250ma and then when your IR turns on and I am just tossing out numbers as I have not looked that camera will now draw a little over 1/2 of an amp at lets say 530ma where 500 would be 1/2amp... So then if your using a Power supply that came with 1 camera it is designed for 1 camera in most cases would be 550ma as a little give.. However someone tried to run 2 cameras off the supply because at day time it will work however because at night with IR it needs almost all the power and now it don't work...
However maybe it is a 5amp power supply that came with the DVR and the DVR take 4.55amps and it is working at day times with camera because no IR as soon as night happens it needs the extra that is over the supply power provided and because of this it shuts the camera down as a way to keep the DVR going...
DVR and camera should NEVER BE ON SAME WALL WORT.. Now if it was a Power Distribution Center then that is a different story... This one helps keep all the ground in good reference..
Here is a Test... Please not I don't promote anyone to run any Wall Wort on a Extension cord.. however if you have no power by the camera for testing please take the Power supply to the camera using the best Extension cord you own as I don't expect everyone to have Construction grade ones like mine running 10-3 but if you have a good cord and please a 18-3 at 100' yeah not good for wall wort hope you have either a 10-3 100' or 16 -3 at 25 or 50 at max.. Anyway plug in the wall wort as close to the camera to get it to plug into camera cord not the Cord your using from DVR but the cord that is on Camera before cord.. Power camera there... 2 things Lines should be gone and as long as power to the camera form supply is within specs it should run in IR without issue...
Then line from DVR to camera is bad, to small of power wire, wire inside ground is making connection to other and causing cross talk there is loads of issues that can happen.. Some times you can even hold wire and move it and you will see lines will get worse and better... SOme times the wires can be to close to power wire and the CCTV lines are not good enough to keep out power loop or cross talk... But with Power to the camera at camera all that goes away issue with line or the way it was run and I am going to guess under powered supply
Be Safe.
Re: Night vision causing camera to power off & on.
Issue: Bad BNC coaxial cable or insufficient shielding getting interference. My previous 1080P camera worked and works fine on this cable lead. I will be installing a new updated RG6 BNC cable over the cheap combined cable it has now.
No It is NOT a PAL camera.
No I am not sharing power for this camera, single Amcrest 12v power supply.
Testing 12v was to look for drops & voltage with no load comparing each both ends.
DVR own dedicated 12v power supply.
Amcrest 4K Camera dedicated power supply by Amcrest.
I should of done this test before posting, but at the time I was looking for a short F-BNC to F-BNC cable that I later found after this post. So I installed that cable to the camera next to my DVR directly to it and camera direct to Amrest power supply (Shortest runs one could have). That worked and no scan lines daytime or nighttime and night vision IR stayed on. So not a loop ground issue as my home outlet is specifically installed for the security system with a quality power strip and nothing else on this circuit (No microwave, refrigerator, etc...).
No It is NOT a PAL camera.
No I am not sharing power for this camera, single Amcrest 12v power supply.
Testing 12v was to look for drops & voltage with no load comparing each both ends.
DVR own dedicated 12v power supply.
Amcrest 4K Camera dedicated power supply by Amcrest.
I should of done this test before posting, but at the time I was looking for a short F-BNC to F-BNC cable that I later found after this post. So I installed that cable to the camera next to my DVR directly to it and camera direct to Amrest power supply (Shortest runs one could have). That worked and no scan lines daytime or nighttime and night vision IR stayed on. So not a loop ground issue as my home outlet is specifically installed for the security system with a quality power strip and nothing else on this circuit (No microwave, refrigerator, etc...).
Re: Night vision causing camera to power off & on.
Ok So you found the issue this is Great...
Sorry i was offering all things that came to mind with issues I have seen had and have needed to fix on one way or another...
My CCTV Closet is setup with a Orange 20amp outlet that is on a Ground Isolated system and I from time to time will get a ground loop within my system even connection in same outlet.. That is why I use now 1 power supply for most of my CCTV gear and High quality Siamese cables. I have and do use for backup the cables that came with a KIT of DVR and cameras... If I need something to work for a short time i will run this to site while Waiting for replacement to come in if I run out.. However it don't stay in my system long...
Yes it is crazy that there are some cameras that have Better built in Filters then others.. I have a Samsung Camera that was bought with IFB installed on the power and video lines I removed them and sure enough even in my system it was not a good picture lol... I wanted to see just how bad one could be... When they come that way that is because they know there is an issue that another 20 cents could have fixed but easier to just setup the beads lol however might be cheaper solution...
In my Closet I have all my Grounds from each device running back to a Ground Bar, all my Grounds that are on my 24vac camera that have ground wires run back to my ground bar... Once was told it was over kill. Even my DVR's and NVR's are grounded to the bar at the back of the unit with Ground symbol on it to the Bar... I also have a Pure Sine Wave backup system and a 40sec auto start on outage NG Gen set..
Sorry i was offering all things that came to mind with issues I have seen had and have needed to fix on one way or another...
My CCTV Closet is setup with a Orange 20amp outlet that is on a Ground Isolated system and I from time to time will get a ground loop within my system even connection in same outlet.. That is why I use now 1 power supply for most of my CCTV gear and High quality Siamese cables. I have and do use for backup the cables that came with a KIT of DVR and cameras... If I need something to work for a short time i will run this to site while Waiting for replacement to come in if I run out.. However it don't stay in my system long...
Yes it is crazy that there are some cameras that have Better built in Filters then others.. I have a Samsung Camera that was bought with IFB installed on the power and video lines I removed them and sure enough even in my system it was not a good picture lol... I wanted to see just how bad one could be... When they come that way that is because they know there is an issue that another 20 cents could have fixed but easier to just setup the beads lol however might be cheaper solution...
In my Closet I have all my Grounds from each device running back to a Ground Bar, all my Grounds that are on my 24vac camera that have ground wires run back to my ground bar... Once was told it was over kill. Even my DVR's and NVR's are grounded to the bar at the back of the unit with Ground symbol on it to the Bar... I also have a Pure Sine Wave backup system and a 40sec auto start on outage NG Gen set..
Be Safe.
Re: Night vision causing camera to power off & on.
It was all good information, I did read up on ground loop and did not see it on my system. I try to mention everything, but always miss something simple. Thanks for the help and was trying to answer some of your points. It did help me tonight when it got dark and had the IR issue again, but figured it out (See below).
It is now night time and the camera is on, IR working. I am sharing power with the multi 12v camera power supply running all 8 cameras. Seems good so far, but what was strange is that I had this on that same power supply combined before, but maybe it was that bad cable with weak video issue that powered it off.
That single power supply is 12v 2amp and should of worked as it does on my other 1080P cameras. Maybe that supply is weak/ defective. Either way, all seems good now.
BTW, the RG6 cable is custom made with no extra feet, I think it came out to about 30 feet. What I think happened is the old cable the video was kinked when I had siding done. It worked with my 1080P camera, but there is a lot more signal with 4K.
It is now night time and the camera is on, IR working. I am sharing power with the multi 12v camera power supply running all 8 cameras. Seems good so far, but what was strange is that I had this on that same power supply combined before, but maybe it was that bad cable with weak video issue that powered it off.
That single power supply is 12v 2amp and should of worked as it does on my other 1080P cameras. Maybe that supply is weak/ defective. Either way, all seems good now.
BTW, the RG6 cable is custom made with no extra feet, I think it came out to about 30 feet. What I think happened is the old cable the video was kinked when I had siding done. It worked with my 1080P camera, but there is a lot more signal with 4K.
Re: Night vision causing camera to power off & on.
My NVR logs show that my Amcrest IP5M-T1179E lost connection for about a minute this morning. When I viewed the recording it had indeed changed from IR to non-IR mode.
Re: Night vision causing camera to power off & on.
@Spile But are you experiencing complete loss of picture whilst in IR mode and not just a temporary blip during changeover?
My AMCREST Cameras:-
2 x IP3M-941B firmware V2.620.00AC00.3.R, Build Date: 2019-12-18
1 x IP2M-841B firmware V2.420.AC00.18.R, Build Date: 2019-08-03
2 x IP3M-941B firmware V2.620.00AC00.3.R, Build Date: 2019-12-18
1 x IP2M-841B firmware V2.420.AC00.18.R, Build Date: 2019-08-03
Re: Night vision causing camera to power off & on.
It was a loss of connection for about a minute.
Re: Night vision causing camera to power off & on.
Couple of things.. One type of cable your using? Are you sure it is a known good Cable rated for POE
Second type of Power your using NVR poe or a switch? Managed or non?
Could this be a Time between recordings? Like for what ever reason when it switches over to IR or off IR maybe it is inbetween record times and don't have enough time to recover.. However it also could be because you said went from one IR on to OFF aka B/W for night and Color for day it could be there is a power issue caused by cable or power supply and reason the IR is off or in color because that is mode it reloaded into after a reboot? Most Weekly reboots happen longer then a Min so I am wondering if it isn't some type of power issue?
Second type of Power your using NVR poe or a switch? Managed or non?
Could this be a Time between recordings? Like for what ever reason when it switches over to IR or off IR maybe it is inbetween record times and don't have enough time to recover.. However it also could be because you said went from one IR on to OFF aka B/W for night and Color for day it could be there is a power issue caused by cable or power supply and reason the IR is off or in color because that is mode it reloaded into after a reboot? Most Weekly reboots happen longer then a Min so I am wondering if it isn't some type of power issue?
Be Safe.