[Ron Shaw]

Hi I’m new here but have been in the video production business since 1984, having started with production formats like Beta I (That’s Betamax kids, not Betacam), then 3/4 U-Matic, 3/4 SP, Betacam, Betacam SP, Digital Betacam (still in use), Betacam SX, IMX, and now XDCam and XDCam HD 4:2:2

OK I won’t bore you any more. I just thought I would comment on a new BM Videohub that we got recently. We are trying it in live production, where seamless “glitchfree” switching is desirable. We have noticed the same issues mentioned in this thread and have sent it back to our dealer for evaluation. It has just been returned after being tested without issue, so we are going to try it again.

We had two situations where noise was visible in the video picture when the Videohub was in the signal path and immediately went away when the unit was bypassed. These were both temporary set-ups for field multi-camera productions.

One was with SD-SDI signals from/to gear like a Sony DVS-2000 switcher, CCU-550D camera control, DVW Digital Betacam decks, BVM/PVM SDI monitors etc. Noise was visible on a Tektronics SDI scope (although I confess that I’m not an expert when it comes to signal evaluation) In this set-up we were also using a legacy Miranda (Nvision) 16×16 SDI router for many of the same sources/destinations, all without issue.

The other was with HD-SDI signals from/to the new Sony BRS-200 switcher, PDW-HD1500 XDcam decks, LMD monitors.

In both cases, we were feeding the Videohub analog blackburst reference and in both cases we ended up pulling the Videohub and manually patching to complete the jobs.

I’ll post if we ever figure this out… take care all.