[TechAssist] Re: VCR compatability question

  • From: "Phillip R. Hull" <phil245@xxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Tue, 7 May 2002 10:41:24 -0400


Yes and you need to trigger on the switch pulse (30HZ) on Channel one  of
scope and channel2 on playback FM   adjust tape guide rollers for a flat
response on both heads.  I would adjust head switching first.
Phillip R Hull
phil245@xxxxxxxxxxxxx
----- Original Message -----
From: "goodrich" <goodrich@xxxxxxxxxxxxxx>
To: "TECHASSIST" <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, May 07, 2002 10:01 AM
Subject: [TechAssist] VCR compatability question


> When you have a VCR with a tracking problem and after
> you adjust the video tapepath guide post ,using a commercially recorded
tape, and have centered the tracking
> front panel control, you wind up with a VCR that is not
> record compatible with other VCR's. Do I put my
> oscilloscope probe on the output of video head preamp?
> I think the waveform needs to be flat along the top
> of the video head signal.More times than not I
> never have a schematic.
> I apologies if this is a elementary question, but this
> is why I join this group, to learn from the more experience
> Tech's.
>
> Darrell Goodrich/
> Goodrich Electronics
> Lubbock,Texas
> goodrich@xxxxxxxxxxxxxx
>
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