[Coco] World's most expensive Coco RGB -> VGA adapter?

gene heskett gheskett at wdtv.com
Tue Jul 19 22:03:18 EDT 2011


On Tuesday, July 19, 2011 09:49:27 PM Mark McDougall did opine:

> On 19/07/2011 9:21 PM, gene heskett wrote:
> > That's great Mark, obviously your coco3's gime is much healthier than
> > mine, that video is much cleaner.
> 
> Are you shielding your R,G, & B signals? Running ribbon along the bottom
> of the case and into a monitor is probably not going to give you the
> best quality signal...
> 
> Regards,

Agreed, but how are you going to shield a cable that is terminated in a 10 
pin IDC plug?

Actually, I am looking at the possibility of actually mounting this card in 
the right rear of the cover, with its output db15's projecting out the 
rear.  But I haven't lifted the cover yet to check for room so it may not 
be doable.  The vga cables would restrict access to the stock reset button, 
but that is 100% portable if push comes to shove.  The thought of doing 
that reduces the length of the coco's output cable to just 6 or 7 inches, 
which might reduce noise pickup.

But I really think I need to verify the actual voltage the gime is getting 
as I know from past experience that it doesn't work at all well below about 
4.75 volts.  It would be many times happier if I could get say 5.2 volts to 
it, but that may require a whole new power supply to replace the old AT 
supply that is running it all now, and has been for close to 20 years.

I should start trolling the surplus sources I guess, for supplies that are 
tweak able.  Heck, I haven't checked, there may be pots in that old AT 
supply for that, but its been sitting there with zero attention for most of 
those 20 years now.

Cheers, gene
-- 
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