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iamatemple

"ADT" CCD Color Camera DIY RJ11 to BNC (a case of necesity)

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A friends old system went down and to get it up till the new system came some wiring needed to be done.

 

Locally I wasn't finding RJ11 to BNC converters so I made some.

 

The cameras were A-CC3MH type in model number and similar A-c*** model numbers.

 

All used RJ11 which went to a multiplexer that accepted that type of input.

 

The multiplexer also had BNC output and converted the signal which then went to a DVR for storage.

 

CCD camera 1 ---> RJ11 multiplexer input ---> multiplexer BNC output (of CCD camera 1) -----> DVR BNC input

 

These cameras labelled "ADT" made in Korea didn't show up anyplace on the web that I looked.

 

Turns out it seems they're made by Ultrak which I found looking for monitor/interphone in hopes of describing the connection type.

 

A poster who I'm not able to credit mentioned they were able to get this type of camera to work using the following:

 

RJ11 pin 1 = Power (-) - bare wire or shielding for video which is ground

pin 5 = red - POWER (+) requires 12volt 1amp to work for me though says it can take 15volt 4w MAX DC

pin 3 = white foam shielded copper - Video (+) goes to the BNC center pin / solid copper wire on BNC male

pin ? = yellow wire which went to the BNC shielding for Video (-)

 

I cut rj11 connector off and did what is below:

 

CCD wiring (was RJ11)___________________BNC male connector_____________________Power source 12v-15v DC 1amp-4 amp MAX

 

Green skinny wire (not used by me)

Black skinny wire (not used by me)

Yellow skinny wire ====================>> BNC shielding wire / outside of connector (Video -)

Red thicker wire =============================================================>> Power source (+)

white foam copper solid wire ===========>> BNC copper center wire / center pin (Video +)

shielding wires from around white foam copper wire ===============================>> Power source (-)

bare skinny wire =============================================================>> Power source (-)

 

This had all the cameras up and working and thanks to flea markets and thrift stores the power supplies were reasonably priced and plentiful.

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