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Signal and power on same coaxial cable
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smesterj
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June 19, 2014 - 3:07 pm
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Do you know of any new system offered with power and signal over the same coaxial?

I am asking because 2 weeks ago I run by accident into a new product demonstration by 2 Korean guys using a 4 channel recorder don’t know if DVR or NVR or whatever the device is (looks like DVR).

It works exactly like HD-SDI but when looking at the camera I did not see any power feed, when asked, one of the guys say the power was on the same coaxial cable up to 100m, more than that a booster is needed, he show me the booster.

The camera was a 2 megapixels digital camera.

I did not ask more because I was not invited and don’t want to be intrusive, I though the guys were Chinese and salute them in Chinese, they don’t like it, latter was informed they were Koreans.

Latter I try to find out from which factory they were from but the distributor did not give me any information just telling me is a new product not yet in the market.

All I saw as reference is the DVR has the name WESGATE (not WESTGATE), when searching for that brand the only thing found is a division of Daewoo.

I ask because working in a project to renew 10 locations security systems and the best I found (up to 2MP) is that one I saw there.

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Dan Maresca
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June 19, 2014 - 3:21 pm
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Normally we use RG59 Siamese cable. That has the power wires integrated into the same cable as the coax so in essence you only pull 1 cable per camera. You still have your standard power distance limitations. We recommend 150ft dc 300ft AC . I personally have never seen a DVR that provides power to  analog cameras. IP cameras we do have those. Distance limitation is 328 feet or 100 meters. 

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Dan Maresca
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June 19, 2014 - 3:24 pm
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Check out this unit

 

http://www.securitycameraking……-prd1.html

That is probably a good fit for you. 

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smesterj
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June 20, 2014 - 10:01 am
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I had the Korean coaxial cable in my hand, for sure is not a Siamese.

I know is possible to place the signal over any DC voltage and rectify at the end, but that is the first system that I saw using it.

I have a similar NVR like the one you point already in one location with 16 POE. Spent more on CAT6 cabling than the NVR and cameras. Will not do that anymore, all locations have coaxial already.

Will keep looking for those manufacturer, if they sent those guys for demo here is because will go out soon.

Thanks

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Dan Maresca
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June 20, 2014 - 10:26 am
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http://www.securitycameraking……-prd1.html

 

That DVR is CVI technology. It allows mega pixel quality cameras over existing coax cable. That will eliminate the need for different cable for you. We have those in 4, 8, and 16 channel options. 

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