7 Apr
2020
7 Apr
'20
11:37 p.m.
-----Original Message-----
From: cctalk <cctalk-bounces at classiccmp.org> On Behalf Of Matt Burke via
cctalk
Sent: 08 April 2020 01:25
To: cctalk at classiccmp.org
Subject: Re: VAXmate PSU
On 07/04/2020 23:34, Rob Jarratt via cctalk wrote:
The timebase will also affect the sampling rate (due to the finite memory
depth) so some finer details of the waveform may not be captured when
running at a slower rate.
I did have this in mind but it seemed to me that the sampling was fine enough. To be sure
though, I just now changed my trigger to capture the drop in the D19 anode voltage and set
the timebase to 10us, but the results looked identical. I couldn't see any spikes that
were different to the pictures I posted last night.
Thanks
Rob
I have seen the suggestions to study the
waveforms at a much higher
resolution. What I am doing is setting the overall timebase in the
100ms range so that I can trigger on when the 555 starts to oscillate
and capture the whole period of operation until the SCR triggers. I
can then zoom in, as can be seen from the trace provided in this
email. I hope that is good enough, or am I missing some problem with doing
it this
way?
Matt