RE: Response Cameras

["Brian G. Reynolds" <brian.g.reynolds@xxxxxxx>]

Looks like no one has responded so I will have a go.

The following is my findings so far with a lot of help from the following:-

Patrick L(?) and
David Paterson,

hope both of you do not mind me cutting and pasting this?

I bought a number of these with SCART connectors in place so I cut them
off!!!way to go!

Now as the cameras were all the same make I "stupidly" assumed
the cables
would be the same colour! WRONG!

So after a lot of head scratching I have come up with this

Green		Power
Black		Common
Red		Audio
Yellow	Video

I have a few other CCTV cameras and the yellow seems the same on all of
them
but as for the others.....

This copy below was from Patrick L, hope you do not mind me copying it here
Patrice?


> The following applies to the "tail" SCART connector:
>
> The SCART plug comes pre-wired as follows:
>
> pin 2 (Left Audio In), pin 6 (Right Audio In) - commoned, camera Red
> pin 8 (Switching voltage) - camera Brown
> pin 17 (Composite video out ground) - camera white, power black
> pin 19 (Composite video out) - camera yellow
>
> camera green is connected to power red inside the plug, but doesn't
> touch the SCART connector.
>
> Summary (if you want to cut the SCART plug off):
> Camera Red - Audio
> Camera Brown - Switching voltage (V+ supply?)
> Camera White - Ground
> Camera Yellow - Composite Video
> Camera Green - +ve supply


> ---------------------------------------------------------------
>
> The following applies to the "tail" SCART connector:
>
> The SCART plug comes pre-wired as follows:
>
> pin 2 (Left Audio In), pin 6 (Right Audio In) - commoned, camera Red
> pin 8 (Switching voltage) - camera Brown
> pin 17 (Composite video out ground) - camera white, power black
> pin 19 (Composite video out) - camera yellow
>
> camera green is connected to power red inside the plug, but doesn't
> touch the SCART connector.
>
> Summary (if you want to cut the SCART plug off):
> Camera Red - Audio
> Camera Brown - Switching voltage (V+ supply?)
> Camera White - Ground
> Camera Yellow - Composite Video
> Camera Green - +ve supply
>
>  --------------------------------------------------------------
>
> The following applies to the hardwired SCART connector (colour codes
> are different):
>
> The SCART plug comes pre-wired as follows:
>
> pin 2 (Left Audio In), pin 6 (Right Audio In) - commoned, camera
> green or white
> pin 8 (Switching voltage) - power red
> pin 17 (Composite video out ground) - power black
> pin 19 (Composite video out) - camera yellow
>
> Summary:
> Camera red - supply +
> Camera black - supply ground
> Camera green or white - audio
> Camera yellow - composite video
>
>  --------------------------------------------------------------
>
> For cameras with SCART tails, I found it necessary to connect pin 4
> (Audio Ground) to pin 17 (Composite video out ground) in order to get
> a picture on my kit. [This doesn't make much sense, and I think the
> response cameras are mis-wired - it suggests the (video, audio)
> signal grounds are separated from the supply ground. If so, then they
> should have commoned the Audio & Video Ground and not relied on
the
> internal configuration of the kit the camera is connected to to do
> this for them].
>
> To connect to a composite video source, connect the composite video
> signal (pin 19) to the centre of a phono jack. Connect video ground
> (pin 17) to the screen/sleeve of the phone jack.
>
> To connect take out the audio, connect the audio signal (pin 2 or 6)
> to centre of the phono jack. Connect supply ground (pin 17) to supply
> ground.
>
> ----------------------------------------------------------------
>
> General approach:
>
> The secret to getting composite video out of a camera is in the
> signal grounding. Everybody seems to do it a little differently... In
> the worst case, commoning: pin 17, pin 4 and the camera supply ground
> should do the trick. (Usual disclaimers apply)
>
> -----------------------------------------------------------------
> If you want to dismantle a camera and extract the CCD board, perhaps
> to mount it in a PIR sensor:
>
> Response cameras have two parts - a circuit board in the head of the
> unit, which contains the audio components and CCD supply circuitry,
> and a separate CCD board in the swivel camera head, which does the
> actual "picture bit"
>
> Camera Head: Black - supply ground
> Camera Head: Red - supply +ve (12V nominal)
> Camera Head: Green - Audio
> Camera Head: Yellow - Video
>
> Camera CCD: Yellow - Video
> Camera CCD: Black - Supply Ground
> Camera CCD: Red - Supply +Ve *** 3.5V ***
>
> I have also dismantled another camera I bought in the Homebase sale
> which is unbranded. The packaging is pretty distinctive - basically a
> warning triangle, and the camera housing is a "globe" shape,
for want
> of a better description - which, whilst not waterproof, looks like it
> would withstand the elements particularly well. This camera uses an
> all-in-one CCD and audio board, with the same colour codes as the
> response camera head. The single board approach makes it a much
> better candidate for PIR integration IMO.
>
> The aperture for the lens can be very small - making the camera very
> discrete. I used blue tack to mount my camera, allowing for
> repositioning/aiming once in situ.
>
> You do not need to use screened cable to feed the video signal back
> to source over short/medium runs of say less than 20m - twisted pair
> works just fine.
>
> -------------------------------------------------------------------
>
> Scart connections can be found in many places. I found the numbering
> of the pins counter-intuitive. This link has a helpful picture which
> makes it all clear: http://www.mpeg2-dvb.com/scart.htm
>
>
> ------------------------------------------------------------------
>
> Hope this is useful to you all. Mark - if you want to put archive
> this on your site somewhere feel free.
>
> Patrick

> -----Original Message-----
> From: peter.white@xxxxxxx [mailto:peter.white@xxxxxxx]
> Sent: 19 November 2001 13:15
> To: ukha_d@xxxxxxx
> Subject: [ukha_d] Response Cameras
>
>
> Guys
>
> Back in the summer I bought various bits of Response stuff from
Homebase.
> Having finally smuggled them into the house, the cameras have
> different end
> connectors to the switcher unit (which wants rj45).    The
> cameras are both TV
> Eye 4000sc, and the switcher is 4000slb.  The cameras have a
> mini-DIN socket on
> the end - anyone know if I can lop this off and put an rj45 on
> the end instead?
> The outputs from the camera are:
> White - audio
> Yellow - video
> Black - grnd
> Red - +12v
> Blue - trigger


And the following is cut from a posting by David Paterson, hope you do not
mind David?

I haven't heard of a standard for CCTV, but I recently took apart a
Response camera (going to be mounted on my telescope) and the colour
codes they use are :-

Red    : +12V
Black  : 0V
Yellow : video
White  : audio
Blue   : PIR trigger (where fitted)
Green  : not used

I've also got a couple of Kingavon cameras at the front and back of the
house, and although they have apparently identical connectors I haven't
taken one apart to check the colour coding.  Somebody else might have
though and it would be interesting to see if they're the same, or if the
connector pinouts are the same.

HTH,

B.