[SunRescue] A/V question

[Les]

I have seen a (couple of times) an apparently grounded recep
which wasn't.
Cable dropped down near amp or receiver ( I'm sure you checked)
will cause it.
Bad cable occasionally.
When going thru the wall, does it pass near an electrical circuit?
Les
----- Original Message ----- 
From: "Bill Bradford" <mrbill at mrbill.net>
To: <rescue at sunhelp.org>
Sent: Tuesday, January 02, 2001 5:40 AM
Subject: [SunRescue] A/V question


> Okay, as long as we're totally off-topic.. 8-)
> 
> I've got a TiVo digital personal recorder/VCR-type box.  Its only
> the 20-hour model, so I cant keep stuff on it forever.  What I've
> got is a VisionTech MVCast MPEG-2 broadcast-quality encoder card
> (currently installed in the Windows box, until I get the problems
> debugged and I get them to send me the Solaris drivers - then it
> will go in the U60).  I'm "dumping" stuff to the MPEG card by
> hooking the A/V inputs of the card to the A/V (audio L/R, video,
> RCA plugs) outputs of the TiVo.  Then, I hit PLAY on the TiVo, and
> hit RECORD on the MPEG capture card software, etc.  I end up with
> a MPEG-2 file on my HD of the program I recorded on the TiVo.
> 
> One problem I'm running into - the TiVo is in the bedroom with the
> TV, etc, and the computer is in the next room, in the "computer room".
> I'm using a 50' 3-plug A/V dubbing cable to connect the TiVo to the
> card on the computer.  What I'm ending up with is perfect video, and
> good audio - but there's an underlying "hum" on all of the audio that
> isnt present on the TiVo recording.  
> 
> I've checked the direct-output from the TiVo, and its not there - so
> the hum is coming in somewhere from either the cable, the computer I've
> got the card hooked up to, etc.
> 
> One thought - could this be due to a grounding problem?  The computer
> and its setup are on a completely different electrical circuit than
> the TiVo and the TV, etc - I know sometimes not having a common ground
> for stuff can cause problems, and I was wondering if this could be the
> cause (because I dont want to have to go and move the computer into
> the bedroom...)
> 
> Thanks for any ideas or input.
> 
> Bill
> 
> -- 
> Bill Bradford       |    "Do you expect me to talk?"
> mrbill at mrbill.net   |    "No, Mr. Bond, I expect you to die!"
> Austin, TX          |        -- "Goldfinger", 1964
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