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From: gnome@olivee.UUCP (Gary Traveis)
Newsgroups: net.video
Subject: Re: Re: counters on VCRS
Message-ID: <403@olivee.UUCP>
Date: Thu, 27-Jun-85 16:00:50 EDT
Article-I.D.: olivee.403
Posted: Thu Jun 27 16:00:50 1985
Date-Received: Tue, 2-Jul-85 06:32:43 EDT
References: <433@zinfandel.UUCP> <1346@hammer.UUCP>
Organization: Olivetti ATC; Cupertino, Ca
Lines: 39

> In article <433@zinfandel.UUCP> russt@zinfandel.UUCP (Russ Tremain) writes:
> >I recently purchased a Fisher stereo VHS VCR.  In general, I am very happy
> >with its performance, but I've noticed the record-length timer is non-linear.
> >
> >In other words, a half-hour recording at the begining of the tape is not
> >equivalent in counter-units to a half-hour recording at the middle or end
> >of the tape. (as the tape rolls, the counter units are longer with respect
> >to time).
> >
> >Is this normal?
> 
> That's what happens when the tape counter runs off the spool drive.
> As the tape runs, the diameter of the spool of tape changes, and
> the spool rpms change.  *Real* VCRs, like the Sony SL-2700, run
> the tape counter off the signals recorded on the tape.  The tape
> counter reads in hours/minutes/seconds, and is *correct*.  I doubt
> if any VHS machines do this, since the tape has to come off the
> head for fast-wind, and you couldn't pick up the timing signals.
> 
> Snoopy
> tektronix!hammer!seifert

Actually, I know of at least two Hitachi VHS decks that have both
tape-count (off the reels) and time count (updated in minutes and
tenth minutes, I think) which runs from the capstan drive circuit.
Both counters are independent and can be
viewed and reset sepparately.  My 9700 also has "search for 000 (tape
counter)"  and "search for beginning of record" which can be turned
on and of individually.

This is nothing new.  The 9700 came out 4 years ago.





"You want quality?  Use a laser!"

		Gary