Hello,
is it normal that an oscilloscope probe put on a oscillating xtal
doesn't stop it from oscillating (yes, it is normal, it has got 1M
impedance and few pF after all).

BUT

if the xtal was stopped (the chip it's connected to was in power
down mode) and I power it up WHILE the oscilloscope probe touches
the xtal terminal, the oscillator will never start up. Now, is THIS
normal?

It seems a xtal has a very hard time starting up, but when started,
it will work robustly. I didn't know this, I haven't read it anywhere
in the past, and am wondering if it's the side effect of some other
problem I haven't identified.

Did you experience anything similar too?

Greets,
Mario

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