[600MRG] Scopematch question

[J Mcvey]

Not sure if I completely understand your concern, but here's what I can offer you:
Scope are not supposed to "match" what they are monitoring ( a  X10 probe is about 10 megohms), so they are meant to do minimal loading.That being said, they do have some loading and capacitance they present. The less the capacity, the better the BW it can be used on.There are also compensation caps on probes minimize the effects of the capacitance for its design BW.The scope should have a calibrator sqaure wave to perform the compensation.Put both probes on this clip and you can see if there is a phase or amplitude difference between them.
Hopefully you are using the same type probe on both channels...
 

    On Wednesday, December 6, 2017 1:17 PM, N1BUG <paul at n1bug.com> wrote:
 

 I'm embarrassed that I haven't yet found (or figured out on my own) 
an answer to this, but am going to ask...

Assuming one is using a scopematch and there is some reactance so 
one trace leads the other... is there some math that will convert 
from degrees leading or lagging to ohms capacitive or inductive 
reactance? It seems that should be readily possible but I can't 
quite get my mind around it.

I guess this could be complicated or inaccurate if the waveforms are 
distorted, but let's assume for now they're not.

Thanks, 73,
Paul N1BUG

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