General Home Automation Surveillance camera wiring

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Subject Author Date
Surveillance camera wiring betty 11-03-07
Posted by betty on November 3, 2007, 2:43 pm
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My intent was to set up a surveillance camera and put it on one of my
cable channels to view it. I know I need to get some sort of
modulator or even get it built in like the ones Net Media offers.

I have some questions though about the video signal. A camera such as
the Sanyo vcc-4794 has a BNC connector for the video output. I was
planning to connect this to a coax cable to bring it from my garage to
my house. Is this signal from the camera the same as the video
component of RCA cables?

Is a coax cable the best choice or should I just run a single wire
equivalent to the RCA video wire? Many of the modulators take in RCA
and put them on coax but I just want to make sure I buy the right
stuff.

Any information would be great.


Posted by Frank Olson on November 3, 2007, 4:04 pm
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betty wrote:
> My intent was to set up a surveillance camera and put it on one of my
> cable channels to view it. I know I need to get some sort of
> modulator or even get it built in like the ones Net Media offers.
>
> I have some questions though about the video signal. A camera such as
> the Sanyo vcc-4794 has a BNC connector for the video output. I was
> planning to connect this to a coax cable to bring it from my garage to
> my house. Is this signal from the camera the same as the video
> component of RCA cables?
>
> Is a coax cable the best choice or should I just run a single wire
> equivalent to the RCA video wire? Many of the modulators take in RCA
> and put them on coax but I just want to make sure I buy the right
> stuff.
>
> Any information would be great.
>


The output on a BNC can be converted to an RCA with no problem (there
are adapters you can buy that work well (with very little in the way of
signal loss). It's best to buy a good quality Coax for the run from the
camera to where-ever it is you're going to hook it up to. RG-6 would
work well (and is readily available). RG-59U is also a good choice but
more expensive. Good luck!

Posted by Robert L Bass on November 3, 2007, 6:30 pm
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On Nov 3, 5:04 pm, Frank Olson
> betty wrote:
> > My intent was to set up a surveillance camera and put it on one of my
> > cable channels to view it. I know I need to get some sort of
> > modulator or even get it built in like the ones Net Media offers.
>
> > I have some questions though about the video signal. A camera such as
> > the Sanyo vcc-4794 has a BNC connector for the video output. I was
> > planning to connect this to a coax cable to bring it from my garage to
> > my house. Is this signal from the camera the same as the video
> > component of RCA cables?
>
> > Is a coax cable the best choice or should I just run a single wire
> > equivalent to the RCA video wire? Many of the modulators take in RCA
> > and put them on coax but I just want to make sure I buy the right
> > stuff.
>
> > Any information would be great.
>
> The output on a BNC can be converted to an RCA with no problem (there
> are adapters you can buy that work well (with very little in the way of
> signal loss). It's best to buy a good quality Coax for the run from the
> camera to where-ever it is you're going to hook it up to. RG-6 would
> work well (and is readily available). RG-59U is also a good choice but
> more expensive. Good luck!

Huh? RG6 is almost invariably more costly than RG59. Professional
installers have been using RG59 for CCTV systems for years. If you
were using high definition (HDTV) cameras you'd need to use RG6,
preferably quad shielded. However, it is highly unlikely you'll find a
need for HD in a typical surveillance project.

--

Regards,
Robert L Bass
Bass Home Electronics
www.BassBurglarAlarms.com


Posted by Dan Lanciani on November 3, 2007, 6:45 pm
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betty111111@gmail.com (betty) writes:

| I have some questions though about the video signal. A camera such as
| the Sanyo vcc-4794 has a BNC connector for the video output. I was
| planning to connect this to a coax cable to bring it from my garage to
| my house. Is this signal from the camera the same as the video
| component of RCA cables?

Yes.

| Is a coax cable the best choice or should I just run a single wire
| equivalent to the RCA video wire? Many of the modulators take in RCA
| and put them on coax but I just want to make sure I buy the right
| stuff.

Yes, coax is suitable for both baseband video and RF applications. Any
good "RCA video wire" *is* coax. I terminate all RG59 and RG6 cable with
F connectors and then use suitable adapters (usually F to RCA or F to BNC)
at the camera and equipment ends. This makes it easy to change equipment
(so-called "professional" is usually BNC while "consumer" is RCA) and also
means I need remember only one crimping procedure (which also covers RF
applications). :) Note that you can often get bags of adapters on eBay
for the cost of one or two at Radio Shack, but watch the shipping charges.

                                Dan Lanciani
                                ddl@danlan.*com

Posted by betty on November 5, 2007, 4:29 pm
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At some point I have to put the signal through an RF modulator to
transfer the camera video onto a cable channel.

Should the modulation happen near the camera (ie. garage) or in my
house? In other words, it is better to have the signal travel as the
video component or as an RF signal?


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