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Re: HP 140B Calibrator

 

Well, I am the buyer. Hope I did not get burned, considering the cost of shipping to the west coast from Pennsyltucky (as my father called it). We shall see what turns up on my doorstep in the next couple of weeks.?

Jeremy?
N6WFO


On Fri, Mar 22, 2024 at 2:35?PM Dave_G0WBX via <g8kbvdave=[email protected]> wrote:
The screen photo's in that HP140B add, appear to show a Z axis problem
(blanking, or not.)

The impression of a square wave I think, is caused by the timebase
triggering on the incoming power line frequency (50/60Hz) with the sweep
speed high enough (10uS/div) to see the vertical A/B "chop" signal, with
the brightness turned up high enough to see the low duty trace, but the
sweep blanking might not be functioning correctly, and/or the CRT bias
setting is out of adjustment.

Probably fixable, the rest of it looks clean, save for a dent in the top
cover.

Shame it's not in the UK, but I do know West Chester PA from trips over
there for the past day job.


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