Last_Mavrik
- Nov 15, 2012
- 9
- Joined
- Nov 15, 2012
- Messages
- 9
Hello again all!
For those of you who helped with my previous questions, thank you! Our new camera system is up and running, with a few minor issues, but most of them easily addressable. This one however, not so much.
For those of you with no clue what I'm talking about, the system in question is basically this:
[Power Cable] --pwr120vAC--> [Transformer] --pwr12vDC--> [130ft 6-Conductor Cable] --pwr12vDC--> [UBEC Voltage Reducer] --pwr5vDC--> [Camera Assembly] --vid--> [Same 130ft 6-Conductor Cable] --vid--> [Monitor]
Simple, but here's the catch: The video signal produced by the camera is beautiful, if you hook it up directly to the monitor. Once you put the [130ft Cable] in the line, the video has minor diagonally scrolling lines of distortion. Still usable video, but not the high-quality you'd expect of a finished product.
So, I've troubleshot this extensively, and here's what I've found:
- Excluded all components from the system save the Camera, Cable, and Voltage Reducer. Direct 12v power from an external source and direct video feed to an externally powered monitor, no change.
- Move power to just behind the Voltage reducer, no real change so long as video is still being pulled from the opposite end of the cable.
- Power fed through the cable, video pulled from just behind the camera assembly (before the 130ft of cable) and the video gets white-washed.
- Put power in just behind the voltage reducer and take video directly from the camera, awesome video.
My most educated guess with all this is either video signal strength loss over distance or power bleed-over from the wires being in close proximity inside 130ft of cable. None of the 6 wires in the cable are shielded, just 22AWG stranded conductors with assorted colors of insulation and a thick outer insulation.
Q: Is there any way I can strengthen the video signal or clean it up before it hits the monitor?
Q: Would a Ferrite Ring be of any use on the video line?
Q: Is there any plausible solution that doesn't require replacing the cable with one that has a shielded Video line?
For those of you who helped with my previous questions, thank you! Our new camera system is up and running, with a few minor issues, but most of them easily addressable. This one however, not so much.
For those of you with no clue what I'm talking about, the system in question is basically this:
[Power Cable] --pwr120vAC--> [Transformer] --pwr12vDC--> [130ft 6-Conductor Cable] --pwr12vDC--> [UBEC Voltage Reducer] --pwr5vDC--> [Camera Assembly] --vid--> [Same 130ft 6-Conductor Cable] --vid--> [Monitor]
Simple, but here's the catch: The video signal produced by the camera is beautiful, if you hook it up directly to the monitor. Once you put the [130ft Cable] in the line, the video has minor diagonally scrolling lines of distortion. Still usable video, but not the high-quality you'd expect of a finished product.
So, I've troubleshot this extensively, and here's what I've found:
- Excluded all components from the system save the Camera, Cable, and Voltage Reducer. Direct 12v power from an external source and direct video feed to an externally powered monitor, no change.
- Move power to just behind the Voltage reducer, no real change so long as video is still being pulled from the opposite end of the cable.
- Power fed through the cable, video pulled from just behind the camera assembly (before the 130ft of cable) and the video gets white-washed.
- Put power in just behind the voltage reducer and take video directly from the camera, awesome video.
My most educated guess with all this is either video signal strength loss over distance or power bleed-over from the wires being in close proximity inside 130ft of cable. None of the 6 wires in the cable are shielded, just 22AWG stranded conductors with assorted colors of insulation and a thick outer insulation.
Q: Is there any way I can strengthen the video signal or clean it up before it hits the monitor?
Q: Would a Ferrite Ring be of any use on the video line?
Q: Is there any plausible solution that doesn't require replacing the cable with one that has a shielded Video line?
Last edited: