strange color camera problem - Electronic Circuits Projects Diagrams Free

schrodingerscat · 27th September 2003, 06:25 PM

Im after getting my hands on a color cctv camera module with audio, and a wireless transmitter and reciever. When i went to try it out, the picture stays color for about 2 seconds, and then changes to B&W. To see if it was the transmitters fault, i dis and re-connected the camera to the transmitter and found the same problem happen again. I cannot see any visible problem with the pcb of the module.Is this a common problem? i would be very gratefull for any suggestions for ways to go about solving the problem.

Sebi · 27th September 2003, 10:05 PM

Have You checked the direct video out without the transmitter?

schrodingerscat · 28th September 2003, 02:24 PM

im after checking it now with a scart connecter, its the camera that's having the problem.

**mechie** · 29th September 2003, 08:48 AM

Try the camera with a different monitor-
I have had problems where the TV SCART input is just not capable of displaying some colour sources correctly.

If the CCTV signal is a bit low and the monitor expects a big signal then the first casualty is colour!

Maybe this is more common than we think :?

schrodingerscat · 4th October 2003, 06:36 PM

thank you for the replies, it looks like you were right: when i connected up the reciever to another tv, it didnt revert to b@w. Thanks again!

Sebi · 4th October 2003, 07:25 PM

Just increase the color decoder (killer) sensitivity. Always have poti.

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27th September 2003, 06:25 PM	(permalink)
schrodingerscat	strange color camera problem Im after getting my hands on a color cctv camera module with audio, and a wireless transmitter and reciever. When i went to try it out, the picture stays color for about 2 seconds, and then changes to B&W. To see if it was the transmitters fault, i dis and re-connected the camera to the transmitter and found the same problem happen again. I cannot see any visible problem with the pcb of the module.Is this a common problem? i would be very gratefull for any suggestions for ways to go about solving the problem. __________________ Mike Bradley ate my hamster.

27th September 2003, 10:05 PM	(permalink)
Sebi	Have You checked the direct video out without the transmitter?

28th September 2003, 02:24 PM	(permalink)
schrodingerscat	im after checking it now with a scart connecter, its the camera that's having the problem. __________________ Mike Bradley ate my hamster.

29th September 2003, 08:48 AM	(permalink)
mechie	Colour CCTV Try the camera with a different monitor- I have had problems where the TV SCART input is just not capable of displaying some colour sources correctly. If the CCTV signal is a bit low and the monitor expects a big signal then the first casualty is colour! Maybe this is more common than we think :? __________________ I need a memory upgrade ... My head is full !

4th October 2003, 06:36 PM	(permalink)
schrodingerscat	thank you for the replies, it looks like you were right: when i connected up the reciever to another tv, it didnt revert to b@w. Thanks again! __________________ Mike Bradley ate my hamster.

4th October 2003, 07:25 PM	(permalink)
Sebi	Just increase the color decoder (killer) sensitivity. Always have poti.