@tautech,
@all,
sorry - I have confirm that I had made an wrong adjustment on my sig. gen.
SDS6022X when doing my TDR measurements.
The observed offset mentioned above was ingested by the peak-2-peak
configuration instead of high/low level configuration where low should be zero
voltage.
That's an issue that should be taken into account when using the waveforms
sinus, triangle or rectangle and changing to puls waveform later.
So "mia culpa" ;-)
As you mentioned above - it's a mandatory thing to know his measurement device.
What's concerns the period/frequency value displayed during measurement mode,
I could confirm too, that my HMO scope behaves in the same manner, so you are
again right.
Yesterday I was not able to check this on the very old HP54503A as promised due
to an config nvmem error that prevent my device from booting.
I use it very seldom and It's now laying around for months unused.
I have to change the battery buffered config ram device DS1230. Hoepfully finding
one.
So thanks for your explanation and patience.
Until next issue.
Btw. I forgot to upload the orig FW to check the other issue written about.
Will check that on Friday. Today night I'm offline ond off ;-)
Markus