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able1

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Posts posted by able1

  2. Posted

    Hi Tom, 

    I am not sure but I may have my answer.  I located the install manual.

    I noticed the selection spot on the screen is either a White Square or a Black Square.

    Clicking on change the color.  What is a bit confusing is which color is the active selection??

    I was thinking when I was there today that I should use White.  However, I am starting to think 

    that I was wrong and it should be Black.   Can you direct me towards the correct Color??

    Not that I read the "entire" install manual but it does not show up that I can see.

    Thanks for the assist,

    Les

     

     

  4. Posted

    I have a customer with a FLIR DNR208P1 NVR and I have a few questions.

    Wondering if anyone here is knowable enough to answer the following.  

     First, I have set the recorder for video motion. But when I playback video

    and I turn off the full time record and only have Motion Checked it appears 

    nothing is shown.  This is even when their is actual motion detected by a red

    icon in the lower left of the screen and all cameras are programmed to record

    during motion.  

    Then again any chance anyone knows of a Tech Support phone number for

    the FLIR NVR products.

    OR  Is this product line non-existent and I am beating a dead horse??

    Thanks in advance for any assist.

    Les

     

     

     

  5. Posted

    cant see the pic you posted so a verbal description of what you found would be appreciated. BUT - I dont know why you persisted with the screw on BNC

     

    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.

     

    Coax%20Cable.JPG?dl=0

    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

  6. Posted

    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

  7. Posted

    Hi. Les.

     

    The dots on image Could also mean 12v into a 24v camera.

     

    Also bad BNC but this usually also shows camera white out every now and again.

     

    If your looking for a temp fix till you run new cable I would do this.... Disconnect power to enclosure (your 24v) and then I would use that cable for the 12v for your camera........ Your shotgun cable I would use the power as your video ....using baluns and don't use the coax. Then see what your image is like

     

    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

  8. Posted

     

    >> When I disconnect camera power the video picture goes away

    however the distortion remains on the screen intermittently.

     

    this would indicate the distortion does not originate from the camera

     

    >> 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.

    this would indicate the distortion is generated by the cable /connectors or camera.

    Since the test above has discounted the camera then we are left with the

    cable/connectors as the source of the problem

     

    >> When I check video from the existing camera on my test monitor

    there is NO video.

     

    since your monitor is showing distorted video this would indicate your test monitor is faulty

     

    Actually my test monitor is not faulty it just can't see

    the distorted video from the camera on the existing cable.

    It works just fine on all other video feeds.

     

    >> When I install a new camera at enclosure on existing coax NO video

    is received at the monitor. Uses existing power.

    this would again point to your cable/connectors being the problem>>

     

    I'm beginning to think you may have more than one problem here since you have conflicting test results , but generally it looks like being your cable/connectors. Coax will not degrade with age unless it is damaged somehow so start with replacing your BNC connectors and see how you go

     

    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

  9. Posted

    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.

     

    Special2018?preview=IMG_5102.JPG

     

    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

  10. Posted

    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

  11. Posted

    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

  12. Posted

    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.

     

    Special2018?preview=IMG_5102.JPG

     

    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

  13. Posted

    Hi. Ground loop would be associated to one or a few cameras no point making 4 8 or 16 way

     

    Ground loop with modern cameras and recorders is a thing of the past

     

     

    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

  16. Posted

    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

  25. Posted

    Are you sure it is not an electrical surge which is taking out the camera? Have you tried plugging the camera into a surge protector on the power side as well as the video side?

     

    There is lies the paradox. Which came first the chicken or the egg.

     

    It seems that the video is getting hit since the power supply does not get zapped. BTW I typed wrongly before about the power source be 24vac. The cameras are powered by 12vdc wall warts.

     

    Thanks for the input.

     

    Les

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