[comp.sys.atari.st] Vertical sync problem on Mitsubishi AUM-1381A multisync monitor

wzg90@TTACS1.TTU.EDU ("NGUYEN, TIEN") (04/03/89)

    Does anyone know why I have a problem with the vertical sync on the hires 
monochrome mode when I connect my 520ST up to the Mitsubishi multisync monitor?

    I constructed the cable using Practical Solutions multisync cable.  The
vertical and horizontal sync outputs from the ST are connected to the vertical
and horizontal sync inputs to the monitor, respectively.  All ground
connections, including sync ground, are connected to the common ground supplied
by the ST. 

    This setup seems to work perfectly in 640x200 and 320x200 resolution modes,
but in monochrome mode the monitor acts as if the vertical hold isn't set
properly (the picture skips from bottom to top).  Unfortunately, the monitor
has no vertical hold control!

    Has anyone come across this problem before?  If so, does anyone know the 
solution?

						Thanks,

						Tien