I have already sent a message in PM to you (in portuguese, easier)
regarding that, but it may be helpful to comment here and get some advice
from the group as well on my assumptions...
From what I could see, on the 468, U310 and U466 are microprocessor
controlled (by means of signals /MODE and /VSM, coming out of U358 that
decodes I/O commands from the uP) so, the test that you did just confirm
that the vertical switching logic is working (U408 and U409) but it doesn't
tell much about U310 or U466 because both depend on the uP action to
perform their functions.
=>Am I correct in that the 468 microprocessor controls part of its
operating panel functions and that it can't be used in full if the
microprocessor is inop?...
Or U310 and U466 are just means for the uP to "tap" into the vertical
scope's control functions being transparently and independently read and
translated by U466 and stored on U310.
=>Being the 465B an analog brother to the 468, is it possible to
"down-convert" the 468 to work without the microprocessor, like a 465B? Or
there would be parts missing?
=> I was trying to study the schematics of the 465B, but apparently the
page of Diagram <4> is missing from every manual I could find. Is this
page available in separate somewhere?
2017-07-05 15:56 GMT-03:00 Samuel Rocha py1dkw@... [TekScopes] <
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