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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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cctv camera probs
Hi all strange problem see if you can come up with a fix.
I have a CCTV camera that i used to run on my SCART on TV or VCR and it works fine, comes with phono leads so i ran it via a SCART to Phono converter plug, all ok. I also have had it plugged into my CCTV monitor directly and thats ok. When i plug it into my CCTV quad i dont get a picture just lines over screen, so i plug it back into monitor direct and its ok, plug other cctv cameras in the quad ports and they work fine, what is up ? Any ideas ? Duncan |
#2
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"Duncan Newell" wrote:
}Hi all strange problem see if you can come up with a fix. } }I have a CCTV camera that i used to run on my SCART on TV or VCR and it }works fine, comes with phono leads so i ran it via a SCART to Phono }converter plug, all ok. I also have had it plugged into my CCTV monitor }directly and thats ok. When i plug it into my CCTV quad i dont get a }picture just lines over screen, so i plug it back into monitor direct and }its ok, plug other cctv cameras in the quad ports and they work fine, what }is up ? }Any ideas ? Is it the same brand/model # as the other working cameras? Stan. |
#3
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Is the camera you are using random interlace, or if it is synchro interlace,
is it locked to the mains for the line frequency? With most (quad box) split boxes, the camera must be of synchro interlace to work with a split box. The box also has some synchronizer circuits in it. If these are defective, the picture will also be running (non synchronized). -- Jerry G. ========================== "Duncan Newell" wrote in message ... Hi all strange problem see if you can come up with a fix. I have a CCTV camera that i used to run on my SCART on TV or VCR and it works fine, comes with phono leads so i ran it via a SCART to Phono converter plug, all ok. I also have had it plugged into my CCTV monitor directly and thats ok. When i plug it into my CCTV quad i dont get a picture just lines over screen, so i plug it back into monitor direct and its ok, plug other cctv cameras in the quad ports and they work fine, what is up ? Any ideas ? Duncan |
#4
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"Jerry G." wrote in message ... Is the camera you are using random interlace, or if it is synchro interlace, is it locked to the mains for the line frequency? With most (quad box) split boxes, the camera must be of synchro interlace to work with a split box. The box also has some synchronizer circuits in it. If these are defective, the picture will also be running (non synchronized). -- Jerry G. ========================== "Duncan Newell" wrote in message ... Hi all strange problem see if you can come up with a fix. I have a CCTV camera that i used to run on my SCART on TV or VCR and it works fine, comes with phono leads so i ran it via a SCART to Phono converter plug, all ok. I also have had it plugged into my CCTV monitor directly and thats ok. When i plug it into my CCTV quad i dont get a picture just lines over screen, so i plug it back into monitor direct and its ok, plug other cctv cameras in the quad ports and they work fine, what is up ? Any ideas ? Duncan The camera is not same as others, its a cheep b/w pin hole type, it works ok on SCART and directly in monitor but not via the quad. Thanks |
#5
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"Duncan Newell" wrote:
}"Jerry G." wrote in message } Is the camera you are using random interlace, or if it is synchro }interlace, }The camera is not same as others, its a cheep b/w pin hole type, it works ok }on SCART and directly in monitor but not via the quad. As Jerry pointed towards, your other cameras are made to work with the quad system...in that the video timimg in the cameras is "tied" to the quad switcher, which has "special" circuitry that syncronizes your cameras. Your cheap camera has no circuitry to use the snyc signals from the quad switcher, hence the results. Stan. |
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