Re: Video "ringing" with PBXGA but not Mach64 or Elsa Gloria

From: Bob Koehler (koehler_at_eisner.nospam.encompasserve.org)
Date: 10/29/03 

Date: 29 Oct 2003 16:09:31 -0600

In article <3F9FEA39.8060405@Flying-Disk.com>, Alan Frisbie <Usenet01REMOVE@Flying-Disk.com> writes:
> Alan Frisbie wrote:
>
>> BINGO! That was it! Even though an ohmmeter showed zero resistance
>> between the three analog grounds (pins 6, 7, & 8), a small wire (I
>> used 30ga wire-wrap wire) soldered across all three pins cured the
>> problem. Now I can use the ZLXp-E2 at all 1280x1024 rates, including
>> the most "agressive", setting 13 (80 KHz Horiz, 75 Hz Vert).
>
> Just to be complete, I should add that before adding the wire, I
> tried Hoff's suggestion that I test other switch settings (i.e.
> different scan rates) on the ZLXp-E2. No matter what the switch
> setting, the video ringing still occured.

   Where the ground is located can be quite important at the data rates
   your getting over that cable. I've seen lots of data cables ring
   when common ground was over 3 feet away from the end of a cable.

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