Re: A possibly sick 7904A
Indeed, but that didn't stop the tek engineers from tryingtoggle quoted messageShow quoted text
to make FOCUS a universal control that worked equally well
on both beams, and the readout.
They failed, of course, but got a pretty good compromise that
worked on most normal intensity levels.
You have to get the internal controls adjusted right, though...
If focus stayed constant irrespective of beam intensity, there would have been no need for a front panel focus control.