Oscillator - scope probe

Thread Starter

Zeeus

Joined Apr 17, 2019
481
Hi...

Made 30Mhz oscillator but could not see the signal on the scope (it was coming and going)

but realized if the probe is set to *10 : could then see the signal

*10 : so the actual signal is *10 of the amplitude displayed by the scope yeah?

"The attenuation circuitry results in higher resistance (generally a good thing) and lower capacitance, which is important for high-frequency measurements."
https://www.allaboutcircuits.com/technical-articles/an-introduction-to-oscilloscope-probes/

Please explain more : Thanks
 

AlbertHall

Joined Jun 4, 2014
8,846
When set to X1 the probe resistance and capacitance presents a greater load on the oscillator and, in this case, it seems that extra loading is enough to stop it oscillating. This is not an entirely unexpected result.
 
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