When I was a student at UCLA and also hired as a student engineer there I got a chance to do most of the 3/4 inch maintenance and our chief engineer had a friend who was in charge of the edit room maintenance at the local CBS affiliate. He came in and gave us a great seminar in which he spoke about the color direct vs color processing in great detail. He also explained that at KNXT, now KCBS, they had modified the record lock phase etc... so their decks did head switching 4.5 lines up not the usual 2.5 for BVU decks or the 6.5 lines up for the VO series considered industrial. They had discovered that their frame synchronizers would burp with head switching 2.5 lines up. He also explained and demonstrated how to tweak the clutching system so that you got the same tape tension in play forward and play reverse according to the tentolometer. This made for smoother editing.
I gobbled up the information and was changing head etc... in no time. This was a unique opportunity that ultimately helped me get a job at ABC prospect lot. I was one of the few network engineers that would stoop to working on 3/4 inch. Given my short term memory loss these days I figure I should exercise my brain on things I use to know well. It's either that or brain food but I don't eat fish.
---In avid-l2@yahoogroups.com, <jb30343@...> wrote :
thirst for arcane knowledge or are you working with U format tapes? I
enjoy these looks back to our roots. --J.B.
bigfish@... [Avid-L2] wrote:
>
>
> That's getting close. As was mentioned earlier the dub cable was more
> of a head wheel to head wheel copy. The color direct vs. color
> process was a mode on the TBC and the color direct relied on the TBC
> feeding back a sub carrier signal to the BVU deck that somehow
> dithered the internal chroma oscillator which eliminated the need for
> some sort of processing to the chroma info and made for a cleaner
> signal. Whether there was an obvious visual improvement to the naked
> eye I can't say. I miss my color under days, but not too much.
>
Posted by: bigfish@pacbell.net
| Reply via web post | • | Reply to sender | • | Reply to group | • | Start a New Topic | • | Messages in this topic (17) |
No comments:
Post a Comment