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timsa

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  1. timsa

    IR Illuminators

    Thanks Kawboy... Yes after a bunch of research I believe you are right. The camera has a 940nm illuminator. Unfortunately the IR illuminator I purchased is an 850nm. I also found out that 850nm is more popular because they have better range than a 940nm. A longer range 940nm illuminator is way more expensive than an 850nm of the same range also. So now it's up to me to decide if I should replace the camera with one that responds to 850nm or keep trying to find a longer range (80 -100 ft), inexpensive 940nm illuminator. ... maybe I'll just mount a regular motion light out at the end of the driveway... Thanks much for your help.
  2. I have one of the low cost SAMSUNG SDE-4001, 8 camera setups you can get from SAM's Club. It's working well enough but I need more IR range for my driveway. The IR illuminator in the camera only lights out to about 20 feet or so and I need about 80. I purchased an IR24, 150' IR illuminator from Supercircuits. I can see the red glow from the IR24 so I know it's working but the camera does not see the IR light from it. I'm assuming the IR illuminator frequency of the IR24 and camera IR frequency response are mismatched. Another note is that I can NOT see the IR from the illuminator which is in the camera (which indicates it's at a different, lower IR frequency). Can anyone recommend an IR illuminator that will work with the cameras provided with the SDE-4001? Does anyone know which IR frequency these cameras respond to? Thanks for any help.
  3. timsa

    IR Illuminators

    I have one of the low cost SAMSUNG SDE-4001, 8 camera setups you can get from SAM's Club. It's working well enough but I need more IR range for my driveway. The IR illuminator in the camera only lights out to about 20 feet or so and I need about 80. I purchased an IR24, 150' IR illuminator from Supercircuits. I can see the red glow from the IR24 so I know it's working but the camera does not see the IR light from it. I'm assuming the IR illuminator frequency of the IR24 and camera IR frequency response are mismatched. Another note is that I can NOT see the IR from the illuminator which is in the camera (which indicates it's at a different, lower IR frequency). Can anyone recommend an IR illuminator that will work with the cameras provided with the SDE-4001? Does anyone know which IR frequency these cameras respond to? Thanks for any help.
  4. I'm trying to find non-samsung cameras that are compatible with the Samsung SDE-4001 DVR. I understand that I could use the 2 BNC ports for use with just about any standard video camera. My goal is to find a way of connecting non-samsung cameras to ports other than 1 and 2. (which are all RJ45 with seemingly Samsung only pinout). The Unshielded Twisted Pair (UTP) (RJ45) pinout for the DVR has the following: Pin 1 CVBS+ Pin 2 CVBS- Pin 3 Audio Pin 4 Ground Pin 5 12V Pin 6 No connection Pin 7 No connection Pin 8 No connection The video is sent on Pin 1 and 2 with a differential signal. Unfortunately this pinout is incompatible with many other cams that send differential video over UTP (RJ45). It is possible to rewire Pin 1 and Pin 2 to some other pins for other cameras, but the question is.. what are the signal levels for pins 1 and 2. A typical standard would be RS422. If these two pins are using the RS422 standard then there are a number of cams which could be made to work with a little cable rewiring. Does anyone know? Thx, Tim
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