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able1

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  1. able1

    Odd Video Output

    Sorry Toss, Don't know why the pics don't show up. Try clicking on the below. Hopefully one of them will get you there. Right Click here and choose "Open in a New Tab" https://www.dropbox.com/s/yo4dcafwr05v31r/Coax%20Cable.JPG?dl=0 The picture shows serious corrosion on the wire braid. I didn't "persist" with the twist on BNC. I only wanted to see if they were the problem on not. I certainly did not use them on the new cameras. Thanks, Les
  2. able1

    Odd Video Output

    Hello all again, Returning with followup information on this odd video issue. https://www.dropbox.com/s/7y8kgnnt2fd382f/IMG_5102.JPG?dl=0 The decision was made after much testing that the problem must be with the cable or terminations and the manager needed something to work properly. The decision was to replace the camera and cable. AND to install a second camera be a backup spare for any future problems. Just a matter of swapping cables and plug in the other power supply. During the tear out I pulled in two new Siamese cables using the existing as a pull string. I cut off the cable ends with some extra cable so that I could test and evaluate later. Saved the camera and the power supply. The new camera install was difficult (way beyond normal) but the install is now completed and both new cameras have very good pictures. The second camera is idle and not powered, and is ready at any time, if needed. That was yesterday and today had a little time to investigate the other camera a cable. I first powered up the camera with the original power supply and connected to my test monitor. Excellent Picture?? I then trimmed back the coax cable and checked and it is a solid copper core. I then soldered the center cores together as well as the braided shield. Again patched to my test monitor. Excellent Picture?? I then jiggled around with the "twist on" BNC connectors. No change in the picture, not even a flicker. I then unscrewed a little at a time the connectors and at some point at about two turns or so, no picture. Screwed back on and picture. Nothing I did re-created the video pattern from before. Except for a missing chunk of cable of about 80 feet and the fact that it is not connected actually on site as it was, the difference is really not understandable. Honestly what am I missing here?? All indications were the cable or the connectors were the issue somehow. Some may say "Just give up and move along". Well I could........... but won't!! I then took the actual cable and did a resistance check on the center core and the copper braid. I had ended up with two sections each about 40 feet long or so. I checked the one and got .8 ohms end to end on both the center core and braid. There was no short between the two. I then checked the other section. Center core about .8 ohms. The braid showed an OPEN. WHAT??? I then cut that section in half and one was good the other was open. I then cut in half again, and again one was good the other was open. I then cut in half again, now the sections were about 5-6 feet long. I noticed a small section on the one about 2" long that did not appear as the rest of the cable. I used my razor knife and split the sheath. The attached picture is what was found. https://www.dropbox.com/s/yo4dcafwr05v31r/Coax%20Cable.JPG?dl=0 This is labeled Honeywell P/N6508 RG59/U CCTV+2 cable. https://www.honeywellcable.com/Pages/Product.aspx?pid=6508 Please note that it specs out with (CCA) Copper Clad Aluminum for the Braid Shield. The bad section is about 10"-11" long. on either side the braid looks great. The outer sheath shows no obvious damage or cuts. Keep in mind that this was INSIDE of Rigid Conduit. Estimated time installed to be about 15 years or maybe 5 years since this particular camera was installed. Unknown to be sure. I am going to guess 5 years since I think the original box camera would have not needed Siamese cable. Some how this has been growing for many years and just got so bad it distorted the video. I am a bit curious, if it had been solid copper braid I wonder if it would have ever been an issue. TOTALLY Boggles the mind!!! But, I can NOW sleep nights. Sorry for the long read. But, it was worth the typing so the read had to be easy. Maybe, (just maybe) it will help some other struggling Tech with a similar challenge in the future. Sweet dreams all. Les
  3. able1

    Odd Video Output

    Hi Tom, The camera uses Siamese cable and has a 12VDC wall wart connected to the 18/2 power leads that feeds direct to the camera. This particular camera has been in (so I am told) about 4 years. This problem started just last week. I don't know the make and model of the camera but it appears to be small bullet that was put inside a very old enclosure. I am very sure it is a 12VDC camera because of the above. The 24VAC feeds through a separate conduit and goes directly to the Heater/Blower circuit board. Power source is unknown. Although it does come out of a 8" x 8" junction box that has a lot of other 14 gauge wires, some are 120VAC. There is no way to do as you suggest. I do thank you for your thoughts. Have a good week. Les
  4. able1

    Odd Video Output

    Thanks Toss, The plan is to install a second camera in the future. Will be replacing the existing coax and at the same time pull in a second for the new camera. I will be using the existing coax as a pull string. So regardless if the problem goes away, I will never know if it is the cable or the connectors. I was thinking cable but now with your input the connectors would be suspect since they are the PITA twist on type. I hate those connectors. They are this type. https://www.ebay.com/itm/BNC-Male-Twist-on-RG59-Connector-for-CCTV-Coax-Coaxial-Security-Cameras/142224223950?hash=item211d396ece:g:1DkAAOSw0hlZJVww I would like to play around and replace the connectors just to prove or disprove but because of the time involved to do so, it is not cost effective. Also there is really no service loop to speak of. So cable length is another issue. What is puzzling is how a connector (if that is what is going on) can cause such a distortion and strange test results. Thanks for the input!! Les
  5. able1

    Odd Video Output

    Hello All, I continue this thread (1) because it is Sunday and I have nothing else better to do and (2) I will consider this educational. Maybe the dissertation will help someone in the future. As the original poster on this challenge I was hoping for a quick solution. With about 60 views in about 4 days since I posted the question this seems to NOT have a easy solution. Or maybe the right person has not logged in as of yet. So I will list again what has NOT worked to isolate the problem. I will post again the picture. If it does not show then right click and open the image in another tab. The camera is powered by a 12VDC wall wart on Siamese Cable The enclosure has a heater/blower that is powered by another source and I suspect it it 24VAC. All is in separate conduits up to the enclosure. The video is on CVBS video format. The bigger challenge is that the camera is about 24 feet up on a outside wall and only accessible by extension ladder. The cable is inside a 3/4" rigid conduit from camera to monitor. >> When I disconnect camera power the video picture goes away however the distortion remains on the screen intermittently. >> When I switch to the CVBS2 input to the monitor nothing changes. >> When I disconnect the BNC at the monitor and replace with a new camera the video is clear and good. >> When I check video from the existing camera on my test monitor there is NO video. >> When I install a new camera at enclosure on existing coax NO video is received at the monitor. Uses existing power. >> When I disconnect the 24VAC power at the enclosure to disable the heater/blower the distorted video does not change. (Did this late Friday) The oldest part of this install is the Siamese RG59 cable. Maybe 15 Years old The plan is replace the cable with new and see what changes if anything. Personally I am baffled as to what is causing the problem. I would like to remove the camera and connect to my test monitor but this camera is a critical part of the operation. I tried to swap it out but with no video to the monitor I had to revert back to the original and work on a different plan. I really want to know what I am fighting here. Nothing I do points it a specific direction. Sorry this got to be a long read. At this point I don't expect a reader to jump in with a "Ahh Haa Moment" that will break the open what I am missing. If the new cable fixes or not I will post that information. Should happen later this coming week. Thanks for reading. Les
  6. able1

    Odd Video Output

    After having a night to sleep on this issue I realized and forgot to mention that at the camera it is installed in a box camera type enclosure. This is set up with a heater and blower that may be powered at 24vac. The camera is a something brand that operates on 12vdc. The enclosure is maybe 15 years old and may have had a box camera installed at that time. It was repalced with a bullet camera about 4 years ago. I know anything is possible but, could it be that the 24vac fan now be causing some bad RF that is getting into the signal of the camera feed?? Yesterday I connected another camera at the enclosure to test and got NO video at all. Reconnected original camera and went back to distorted video. Anybody have any thoughts or experience with this sort of video distortion?? Thanks in advance!! Les
  7. able1

    Odd Video Output

    toss, I placed another camera directly to the monitor and the picture was good. This is a Neovo SK-19P monitor that has multiple inputs. I tried the CVBS1 and CVBS2 and got the same results. The camera/monitor setup has been in since about 2014 and this distortion just started about 3 days ago. Were you able to see the picture i posted on dropbox?? Thanks for the quick response. Les
  8. Hello all, I have customer with one camera that is showing a strange video distortion. This is a CVBS video direct to a monitor. No DVR is involved. Please look at the picture that is on dropbox. Well it seems that the image link is not working. At least for me. Not sure what I might be doing wrong. The following is a almost simulation. It is overlaid on the video picture. ............................................. ............................................. ............................................. ............................................. ............................................. ............................................. Although I can simulate it here the dots above are at an angle on the screen and are white in color. The white dot lines are moving up across the screen. I have never seen this type of signal distortion before and was wondering if anyone would know what would cause the problem. I have connected another camera to the monitor and it is good. I switched to a 2nd input to the monitor distortion dots still there. I have power cycled everything and it returns on power up. When I connect my test monitor to the coax nothing is displayed. This is very odd so looking for some insight. Thanks in advance. Les
  9. I get it Tom. Ground loops are not as prevalent as they use to be but they still exist even with newer equipment. It is a long story and I was hoping that something was out there. I will end my quest since my brain is fried searching for something that is not there. Thanks for the input. Les
  10. Thanks for the quick response Tom. Ok, sorry but maybe the wrong terminology. What I am trying to find is a device that provide Ground Loop Isolation that has 16 channels with BNC IN to BNC Out. Is that something that exist?? And where/what?? Thanks, Les
  11. Hello, Anyone know of a 16 Channel Video Passive Transceiver with Ground Loop Isolation with BNC in and BNC Out?? I can find units for UTP to BNC but not BNC to BNC. Any help or input would be appreciated. Thanks, Les
  12. Hello all, I am curious if anyone has used a convex mirror that is focused on with a camera from a distance to see in the opposite direction?? I have a project that involves getting a view of a roof. The problem is that the roof is the only place for the camera to be mounted and getting the right view is a challenge. So I was wondering if a convex mirror were mounted on a light pole and zoom in on the convex mirror would provide the necessary view. Now I know physically and technically it is possible. What I don't know are what are the challenges or unknown problems involved in setting this up. The camera distance to the convex mirror will be about 60' and I will need at least a 60mm lens to zoom in on the mirror. Anyone here ever done this and what are the difficulties experienced?? Thanks in advance for any insight. Les
  13. Hello all, Has anyone used the GeoVision GVPOEX0100 Extenders?? http://www.geovision.com.tw/english/Prod_GVPoEX0100.asp It would be nice to know if they perform as advertised. Thanks for any thoughts and suggestions. ABLE1
  14. Hi Blue, Thanks for the input. However, the potential customer has decided that having exterior motion lights was their better choice to handle the the current condition. Go figure???? As for the software it might do the job but it would be very difficult to evaluate since I don't do Apple stuff, etc. Life goes on. Les
  15. Hello all, I am being asked to install a camera at a barn that can be accessed on a Apple/Mac something. Anyone have any knowledge on that mix. Really don't have the brain juice for the Mac World. Any help would be appreciated. Thanks, Les
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