Chris Chapman
Active Member
Hey gang, I need some trouble shooting advice on this one.
It's that magic time for Commencement again, and the District uses our Theatre for overflow seating. We take a live video feed of our Commencement Ceremony and project it onto our RP screen. Nice for the gray hair crowd, since the theatre is air conditioned and the gym isn't. Anyway.. I digress.
The inhouse video distro system is, to put it bluntly, sucky. Last year we ran a video over Cat5 (RJ45 Connections) to the projector postion to get a clean video send. As soon as commencement ended last year, we struck the gear, and it has patiently sat in a box for 12 months.
This year, as we set up we run into this snag. The video feed has a rolling band in it, indicitive of a ground problem. SO when I grab the BNC connector to disconnect the video send to trouble shoot it, ZAP. Got shock #1. As I troubleshoot on the projector end, every time I ground out grabbing the physical end of the cable, ZAP. Hmmmmm. On the send side, as we clean up our sources I run into this interesting issue. When I take the video lift off of a stand alone DVD player, no roll, no zap. As soon as I connect to their Video mixer or a source connected to their mixer, ZAP. I tried placing the mixer on different power and the zaps continue. SHould I (ulp) try to lift the ground on the mixer to eliminate the ground issue (hopefully) or try a different source?
The Video over Cat 5 has NO power on it, so the fault has to be coming from the Video send side, right?
Thanks for any advice on this one, video is not my baliwick.
-Chris Chapman
TD, Greenville Performing Arts Center
It's that magic time for Commencement again, and the District uses our Theatre for overflow seating. We take a live video feed of our Commencement Ceremony and project it onto our RP screen. Nice for the gray hair crowd, since the theatre is air conditioned and the gym isn't. Anyway.. I digress.
The inhouse video distro system is, to put it bluntly, sucky. Last year we ran a video over Cat5 (RJ45 Connections) to the projector postion to get a clean video send. As soon as commencement ended last year, we struck the gear, and it has patiently sat in a box for 12 months.
This year, as we set up we run into this snag. The video feed has a rolling band in it, indicitive of a ground problem. SO when I grab the BNC connector to disconnect the video send to trouble shoot it, ZAP. Got shock #1. As I troubleshoot on the projector end, every time I ground out grabbing the physical end of the cable, ZAP. Hmmmmm. On the send side, as we clean up our sources I run into this interesting issue. When I take the video lift off of a stand alone DVD player, no roll, no zap. As soon as I connect to their Video mixer or a source connected to their mixer, ZAP. I tried placing the mixer on different power and the zaps continue. SHould I (ulp) try to lift the ground on the mixer to eliminate the ground issue (hopefully) or try a different source?
The Video over Cat 5 has NO power on it, so the fault has to be coming from the Video send side, right?
Thanks for any advice on this one, video is not my baliwick.
-Chris Chapman
TD, Greenville Performing Arts Center
Last edited: