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AVCONSULTING

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Posts posted by AVCONSULTING


  1. 2002 Electron Blue convertible. Also to the Ohio guy, I grew up in MO so I don't consider someone saying I'm from MO is an insult. Take what is said here in a spirit of good comradeship. You will find a very likeable bunch of people on this board unlike what you might find on Yahoo sites.

    Plus no one has a lock on a common name like Security Solutions. I'm sure every state has a few of them listed.


  2. That's ok Hermin. My old nickname in the industry was CCTV King, looks like someone else inherited it after me. I think Larry Haimson in your area at Royal Sales styled himself that way after I retired. I still have a license plate on my Corvette that is CCTVKNG. Security Solutions is out here also. I guess it can be incorporated in different states.


  3. Any 1 channel video servers that can handle dynamic ip internally without having to resort to No IP, etc. I'm going to have multiple Extreme CCTV license plate cameras that have to be accessed through cable modems so highly unlikely that a static IP would be available. The cameras are standard video output so will need a converter. Total number of cameras will be around 18 so also any input on an NVR to handle this would be appreciated.


  4. Not everyone is looking for object tracking, human recognition and the rest.

    In fact a huge numbert of installations are looking for simplicity, not complexity, and systems like the Sanyo, DM, Kalatel, Vitek, Nuvico, etc are just right for them. The last thing they need is a delicate PC based system with all the inherent problems of instability due to Microsoft based operating systems, trojan horse programs, virus', etc. Sometimes a robust standalone product is what works best without all the bells and whistles. Perhaps it is most important to find out what this person is looking for first before throwing out everyone's favorite DVR. BTW just as a note, the Kodicom based systems are very picky about the video card and many installations require a total change of video cards in the remote viewing stations which can be a royal pain. Having sold many Kodicom systems and suffering through problems like that I wouldn't say that I-3 or any Kodicom board based system is the end all solution to many applications.


  5. I've got someone who is saying their DVR is recording even if there is no motion at night and I've been telling them that if their camera has a poor signal to noise ratio then the random noise is triggering the motion detector. He thinks the DVR has a problem.

     

    Anyone know of an article or articles written regarding motion detection being tripped by high camera noise? Thanks.


  6. Considering how low the price has gone on DVRs it might just be the time to get one. You can use it with your existing cameras since the DVR uses the same type of inputs as does your multiplexer. Go over to the digital forum and read up on the numerous low cost DVRs that we have been discussing to see what is available. Buying a VCR now even under $200 would be a waste of your money. Perhaps the VCR failure is a sign from the electronic gnomes that it is time for you to upgrade.


  7. Looks like they dropped the VCR out of the line. Most likely on your VCR in order to get out of the lockup situation you need to press a combination of buttons at the same time, or find a small reset button that has to be accessed with a paper clip. Look carefully on the front and back of the unit for any small hole about the size of a paper clip. There should be mention of a master reset in the manual so you might want to look through the manual once more to see if there is any mention of a key sequence or reset switch. Failing that, new time lapse VCRs are so low cost now that you could easily buy one for the interim until you upgrade to a DVR.


  8. This is a pretty complicated situation. First problem - Are they taking the switched output from the DVR and splitting it to the DA's by using a T connector? If so this is not good since you are now dividing the impedance by 2 and that alone could be a problem. If so then a possible solution would be to first feed the switched out to only one DA, you will get 8 outputs. Take 7 of those outputs to monitors and take the 8th output to the second DA where you will then get another 8 outputs or a total of 15. From your initial description this sounds like what they are doing but wanted to cover that just in case.

     

    Second problem is your camera sync. The cameras are most likely out of sync and depending on the camera you may or may not be able to put them in sync. First you have to find if there is a phase adjustment on the camera. Second you have to make sure that all the cameras are being fed with the same phase from the power supply. Is this a multi output power supply or are there multiple supplies? Either way you have to feed all the cameras the same. Think of it as plus and minus even though it is 24vac. If your power cable has a ridge or color then make sure you feed each camera's power with the same side, otherwise you will have cameras 180 deg out of phase. Once you have made sure all cameras are being powered correctly and if you still have a phasing problem then you need to fine tune the phasing or sync.

     

    To do it the right way you need a sync meter but they are not easy to find so a quick and dirty method is to take a t connector and a monitor and take one camera as the master. Take the master camera and another camera, take the outputs of each camera into the T and then out of the T into the monitor. You'll get two pictures overlapping but if they are out of phase then one picture will be rolling or out of phase. Turn the phase adjustment on the non master camera until it stabilizes. Then take another camera using the same original master and repeat. Keep doing this until all are in phase. Hopefully then all will be in phase and your rolling will stop. This isn't perfect and may not work but it is the best you can do. Picture flipping on a switcher is pretty common and that is one of the reasons switchers got replaced by quads and then by multiplexers.

     

    Hope that helps somewhat, good luck.


  9. In most cases regarding Korean DVR cards they are supplied as OEM cards to various companies that build their own DVR and then give it a unique name. So you can find several companies that use Kodicom capture boards that are being sold under many different names but all using the same core product. This isn't unusual in our industry. You might check out this site since they do list the Kodicom brand name on their DVRs and I'm sure there are a few others out there.

     

    http://www.surveillancetechnologies.com/

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