Re: S-parameter test sets

Forgot to mention pros and cons :

Obviously, you want to be matched to your target device, although it is
possible to do the transform (because you know the mismatch).

In general, 50/100 ohms is the most prevalent impedance for high speed
stuff (where S parameters become very important), so 50 is probably a
good choice, unless you have some particular equipment in mind that is
something else.

The tradeoff in systems for each impedance is really a balance between
drive (higher impedance, longer distances, generally) and lower noise
(lower impedance, lower noise).

Cheers

PeteS

.

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