Sooooooooo. It turns out the client was noticing artifacts that were only present in the bars. Spikes up to 107 IRE but only showing as artifacts inbetween each bar. Looking at a waveform, showing bars, at the intersection of each bar, apparently the FCP (using AJA) would show a spike and one could see artifacting in the picture at those intersections. The F500 deck was causing this in E to E, but the signal did not look that way going in. A recording would record this issue as well.
On the other hand, when bars were fed from a Smoke or Flame, it was fine. We brought in an SR deck as a substitute machine, and the SR did not have this problem. Only the F500, and only when looking at FCP.
In the end, there was nothing wrong with either the F500 or the 5500 decks. And the problem only showed itself coming from FCP. And it was the F500 that showed the artifacts only in the color bars, but the issues were probably not visible within the program itself. So presumably, these are artifacts that are only presenti bars, as bar represent an extreme video signal.
I've explained it as clearly as I understand it, and I was not there, but I will check it out when we have the deck back, so I can at least see what it looks like. This should be repeatable. And I will snap some photos of the scope with my trusty iPhone 4!
Thanks to all who chimed in.
--- In Avid-L2@yahoogroups.com, "millervideo_sf" <millervideo@...> wrote:
>
> We have a client who is using our Sony HDCAM F-500 deck. The client states that when inputing bars, the deck changes the video levels on throughput (e to e). 100 IRE jumps to 107 IRE and Black level drops. Also the decks input check button shows input bars are correct. And the client states that one of his known HDCAM masters plays back fine.
>
> Any ideas of what might be going wrong here? I have never had this happen before. Is this deck broken or is there some internal setting that may cause this issue?
>
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