"egb" wrote in
oups.com:

Jim, thanks for the reply. The display is just fine in every other
respect. Single trace,or 4 trace everything works, regardless of
amplitude.


Some CRTs had more halo than others,and depended on trace brightness and
sweep speeds.Also Z-axis unblanking could be a problem.

--
Jim Yanik
jyanik
at
kua.net