It turns out Chuck was dead on (don't know why he didn't just say so, maybe he
forgot):
http://ftp.qrz.ru/pub/hamradio/schemes/monitors/olivetti/OLIVETTI-MDU-1231/…
on pg.14 according to Adobe or 1-8 in the manual it states the frequency is in fact 31.5
khz, which is very strange. Most computer w/400 line video cards can use one another's
monitors.
I bow my head in shame.