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dechowireless

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Posts posted by dechowireless


  1. Hello i have a DVR1604HD-L and i have installed all 16 HDSDI cameras to it everything works correctly but from time to time certain cameras would blink out for like 2 secs. I wonder is its the power so i went to buy a brand new power supply box each one of these cameras without IR take up 300mA with IR on it takes 900mA i have 2 power box one is 10A 9CH and the other is 18CH 11A the 10A is a off brand power box and the 11A is an ALtronix SAV1820. i dont think the power is the issue but i could be wrong... there are 6 cameras going into the 9CH box and 10 cameras going into the 18CH box... i calculated all the power ratios and its all correct. Now i wonder if its the compression of the DVR.. i dropped all the videos down to 720P @ 14fps and now i only get 2 cameras that blink... please help if you ever encountered this problem... thanks

    What type of RG59 are you using?

    Extracted from Videcon SDI camera brochure

    Important - Please Note

    For HD-SDI installations, we recommend that this device is used with RG59 cable, with an inner

    conductor made of bare copper, with a minimum diameter of 0.7mm. Using a copper clad cable,

    or one with a smaller inner conductor, is very likely to reduce cable lengths or cause signal loss.

    Using the recommended cable should ensure that cable lengths of 100 metres can be achieved.

    thanks!!


  2. Hello i have a DVR1604HD-L and i have installed all 16 HDSDI cameras to it everything works correctly but from time to time certain cameras would blink out for like 2 secs. I wonder is its the power so i went to buy a brand new power supply box each one of these cameras without IR take up 300mA with IR on it takes 900mA i have 2 power box one is 10A 9CH and the other is 18CH 11A the 10A is a off brand power box and the 11A is an ALtronix SAV1820. i dont think the power is the issue but i could be wrong... there are 6 cameras going into the 9CH box and 10 cameras going into the 18CH box... i calculated all the power ratios and its all correct. Now i wonder if its the compression of the DVR.. i dropped all the videos down to 720P @ 14fps and now i only get 2 cameras that blink... please help if you ever encountered this problem... thanks


  3. Hello i have a DVR1604HD-L and i have installed all 16 HDSDI cameras to it everything works correctly but from time to time certain cameras would blink out for like 2 secs. I wonder is its the power so i went to buy a brand new power supply box each one of these cameras without IR take up 300mA with IR on it takes 900mA i have 2 power box one is 10A 9CH and the other is 18CH 11A the 10A is a off brand power box and the 11A is an ALtronix SAV1820. i dont think the power is the issue but i could be wrong... there are 6 cameras going into the 9CH box and 10 cameras going into the 18CH box... i calculated all the power ratios and its all correct. Now i wonder if its the compression of the DVR.. i dropped all the videos down to 720P @ 14fps and now i only get 2 cameras that blink... please help if you ever encountered this problem... thanks


  4. Hello all

     

    I know this problem is beat to death but I tried an alternative and I still have the problem, wonder if anyone can point me in the right direction.

     

    I have 16 cams all ran from 50ft to 370ft (6 under 100ft/ 4 under 300ft / 2 under 370 ft) all the close ones seem to have power... 50-100 ft I understand that it could have been a power I originally have a psu that was 18ch 12V/10amps my cameras are 500mA each so

     

    16cams x .5A = 8A total do I figure 10A will do the job.

    It didn't. Only for the short runs now I have one that is borderline and it provides power but it have a gray screen flickers but that's about all. So my solution was go buy a new psu. Bout a 18ch 12A still all the same problems... I'm stumped like analog ill attach pics of what I am seeing.

     

    hope someone can help me out thank you.

    image.jpg.97e192c28e0af8de4331fa8f2b336e9e.jpg

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