On Wednesday (04/30/2025 at 10:29PM +0200), Christian Eisert via groups.io wrote:
sorry Dave, I didn't mean to be rude. It may have something to do with my
English skills.
So no, they fall out because they don't meet the original criterion with the
blanking circuit ;).
I just read that on the wiki.
FWIW, you might want to double check that. 465 has a Z-axis BNC input
on the back panel.
From page 2-8 of the 465B service manual,
EXT Z-AXIS -- Input bnc connector permits the application of an
external signal to intensity modulate the crt display. Does not
affect display wave-shape. Signals with fast rise time and fall
time provide the most abrupt intensity change. Signals must be
time-related to the display for a stable presentation on the crt.
The connector is useful for adding time markers in uncalibrated
modes of operation.
What isn't clearly defined, that I have yet found, is what voltage levels
you would present to this input to get maximum and minimum intensity.
Chris
--
Chris Elmquist
