Auto mode detection filter doesn't work in CGA mode for C-Sync with C2=1uF

[yngwiechou]

It seems C2 = 1uF is too low for C-Sync to work properly.

Please see attached graph

Apology for not able to test MDA and Enhanced EGA, since I don't have them in hand.

[Liz1701]

Hi, I don't understand all the technical stuff. I built one of these from kit. I have an LCD that works with the 15khz RGBHV. However I'm wandering if I'm having the C-Sync Issue you describe? My purpose in getting the MCE adapter was to connect my Sony PVM1350. But it apparently isn't detecting the RGBs 15khz. This is using CGA.

[oXL0C0Xo]

Has anyone tested if swapping the capacitor at C2 with a 4.7uf resolves the issue without any negative effects on anything else?

[necroware]

I tested 4.7uf and it seems to work fine. Other features were not affected. Color mode auto-detection works fine.