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How to - Custom Security Camera (Power/Video) Cable.

 
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Banshee77
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PostPosted: Sat Oct 06, 2007 9:41 pm    Post subject: How to - Custom Security Camera (Power/Video) Cable. Reply with quote

Hello,
i'm trying to get an old Microta Security Camera that i got from a discount store to work. it runs on 12VDC and has Infrared, a Speaker, Microphone and the Camera. the only output is a 4pin mini-Din jack. i've tried using a S-video cable to the tv and it didn't work, i assume from Lack of power to the camera. so i'm wondering if anyone has any suggestions on how to identify what wires out of the 4 are for Power/Video/Audio & Ground. and how to make a custom cable to power the camera and hook-up to my TV. thank you for any help. any is greatly appriciated

-Banshee
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torbjorn



Joined: 07 Jun 2007
Posts: 370
Location: Sweden

PostPosted: Tue Oct 09, 2007 9:20 am    Post subject: Reply with quote

Usually, it is fairly easy to trace the wiring inside the camera to at least find out which pins go to ground and +12V. Then, power up the camera and check with oscilloscope on which other pin there is video signal.

Note that many cheap security cameras do not use standardized video signal levels and impedances. Often, the interface is intended for a twisted pair cable with 120 ohms termination instead of coaxial cable with 75 ohms termination as is common for a tv's video input.
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Banshee



Joined: 06 Oct 2007
Posts: 4
Location: Ontario, Canada

PostPosted: Wed Oct 10, 2007 3:59 am    Post subject: Reply with quote

Thank you for your reply. however i don't have an Osilloscope

so Here are some pictures, i hope this will Help with getting my problem solved. again thank you for your help and time.

(Note: I Fliped pictures 6 & 7 because i figured it would be easier to compair the the with picture 5 which is the other side the 6&7.

(1) http://i241.photobucket.com/albums/ff23/Banshee-Scream/Security%20Camera/SecurityCameraconnectors.jpg

(5) http://i241.photobucket.com/albums/ff23/Banshee-Scream/Security%20Camera/Part1CamerasBasewithin.jpg

(6) http://i241.photobucket.com/albums/ff23/Banshee-Scream/Security%20Camera/Part1BasePCBTracesClose-up.jpg

(7) http://i241.photobucket.com/albums/ff23/Banshee-Scream/Security%20Camera/Part1BasePCBTraces.jpg

-Banshee
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vtech



Joined: 08 May 2006
Posts: 1264
Location: USA

PostPosted: Wed Oct 10, 2007 3:56 pm    Post subject: Reply with quote

Looking at the pictures, sort of reminds me of a (Radio- Shack/Micronta) system I had set up in my business years ago and If I'm not mistaking , it was actually an audio sensor/detector made to look like a camera which was set up to be controlled by a main switching box located somwhere in the building. --Can't say for sure if this is the same though??

Your pc board picture appears to be an Audio amplifier circuit controled by some sort of a relay. KA2201 is nothing but a simple audio amp----Do not see any path or a link/connection for any "video" whatsoever?

So, unless there are other connection/pcb, Just don't see where/how you get any"video" to be able to monitor? Confused
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Banshee



Joined: 06 Oct 2007
Posts: 4
Location: Ontario, Canada

PostPosted: Wed Oct 10, 2007 6:16 pm    Post subject: Reply with quote

yes there are more pics of the Actual Camera PCB, this site however only allowed 4 pics....so nice :S

it is a Radio shack Micronta... how ever this one Deffinatly is a Real Camera with IR as well. all i want to do is make a custom cable.. since i didn't get one when i baught it. to plug in to the wall, have RCA for audio and Video.

http://i241.photobucket.com/albums/ff23/Banshee-Scream/Security%20Camera/SecurityCamera.jpg

http://i241.photobucket.com/albums/ff23/Banshee-Scream/Security%20Camera/ProductLableonPart2.jpg

http://i241.photobucket.com/albums/ff23/Banshee-Scream/Security%20Camera/Part2CameraModule.jpg

http://i241.photobucket.com/albums/ff23/Banshee-Scream/Security%20Camera/Part2-CameraModule.jpg
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vtech



Joined: 08 May 2006
Posts: 1264
Location: USA

PostPosted: Wed Oct 10, 2007 7:50 pm    Post subject: Reply with quote

Ok, I see

No doubt it has a camera.....have U tried RS site?

matter of fact it is posted as part of a CCTV surveillance system. Surprised

Specs/pinout also shown>> http://tinyurl.com/2e88kt
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Banshee



Joined: 06 Oct 2007
Posts: 4
Location: Ontario, Canada

PostPosted: Wed Oct 10, 2007 8:52 pm    Post subject: Reply with quote

Wow Thank You!, however I fail to see how you don't think it has a camera. when the Pictures Clearly show it.. however the site you posted has the Pin layout of All The Wires. Red - Video Black - 12V Audio - White Mic - Blue.. i Thank you for posting that for me, not all i have to do it make my cable and i will have my Video and Audio, i will also build a device to take advantage of the Intercom feature in it Very Happy thank you again!

-Banshee
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Banshee



Joined: 06 Oct 2007
Posts: 4
Location: Ontario, Canada

PostPosted: Wed Oct 10, 2007 9:05 pm    Post subject: Reply with quote

ok, Sorry i just realized that i misread. i thaught you were still telling me that it didn't have a Camera. i'm sorry for that oversight and thank you again.
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