JVC S-VHS AV grounding

[Darren Stanley]

Can anyone say why JVC would be grounding the RF modulator and AV ports
(SCART connectors) to the video decks metal case?
Would performance be any better if this ground system were defeated?


Darren

 

[Tim Kettring]

I dont know , but just hate chancing a design change that could introduce
problems .

tim

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"Darren Stanley" <darren.stanley@ic24.net> wrote in message
news:MTTrb.2040$gS4.1213@newsfep4-winn.server.ntli.net...

Can anyone say why JVC would be grounding the RF modulator and AV ports
(SCART connectors) to the video decks metal case?
Would performance be any better if this ground system were defeated?


Darren

 

[Mjolinor]

"Darren Stanley" <darren.stanley@ic24.net> wrote in message
news:MTTrb.2040$gS4.1213@newsfep4-winn.server.ntli.net...

Can anyone say why JVC would be grounding the RF modulator and AV ports
(SCART connectors) to the video decks metal case?
Would performance be any better if this ground system were defeated?


Darren

Are you saying they are grounded or do you mean they are connected to the
metal work of the VCR. They are connected together so you don't get a
voltage difference between them. They are also (probably) floating somewhere
around 100 volts depending on the PSU design of the video, unless it has a
three wire plug on and I don't think any domestic VCRs have nowadays.
Performance is not likely to be any better with the metal parts seperated,
not that I can see anyway.

 

[Richard Crowley]

"Darren Stanley" wrote ...

Can anyone say why JVC would be grounding the RF modulator
and AV ports (SCART connectors) to the video decks metal case?

Sure makes circuit design more straightforward. The tone of your
question makes it seem like you think this is a bad idea. Why?

Would performance be any better if this ground system were defeated?

Is there a specific problem you are trying to solve?
How do you think it would be "better" (by your definition)?