13 Jul
2005
13 Jul
'05
8:13 p.m.
Paul wrote....
Sounds right. I couldn't find the doc you
mentioned -- the ones I
checked on bitsavers don't show the frequencies, but they do show that
you get your choice of four "speed groups" according to the crystal
you pick.
That chart should have the frequencies at the top over each speed group.
I
think it was the DL11-A,B,C,D printset I was looking at that listed the
frequencies.
Anyway, Jameco or Digikey may work, if the frequency
you need happens
to be a stock one. If not, contact a crystal manufacturer. In years
past, I've ordered crystals for a custom frequency, quantity one,
completely painlessly from International Crystal. It seems odd, but
they have no trouble with custom orders for just a single part.
Yeah, I tried Jan
Crystals, they said they couldn't sell me a new crystal
unless I knew something called the "load factor" of the existing crystal.
That tidbit I don't see in the documentation. They also wanted $20 each, and
that seemed a bit steep.
At some point in the future I'd like to upgrade the crystals on both my
M7800's. However, in the mean time I have found a M7856 which makes for a
much more usable console speed :)
Jay