Jens,
The CRT monitor may not be adjusted properly. The horizontal oscillator
probably has a frequency control. This what we called Horizontal Hold on TV
sets.
Do you have any documentation such as a schematic, service manual or
similar for it?




On Fri, Feb 25, 2022, 9:34 PM jb-electronics <[email protected]>
wrote:

> Hey David, I had a few minutes spare time tonight and I verified that both
> the hsync and vsync signals appear at exactly the right frequency (19.2kHz
> and 60Hz, respectively) and have the correct duration. Yet, the image is
> still garbage. How can that be, any ideas?
>
> Jens
>
>

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