0
\$\begingroup\$

I am fresher and doing a semi-conductor experiment at my university. I have some problems with my oscilloscope.

Signal from my university's oscilloscope:

Signal got from my University's oscilloscope

My input signal is 2V peak to peak, with the schematic below (capacitor measured by VOM).

Schematic

The oscilloscope amplified my input signal to 10x. How do we fix it? The oscilloscope is a Tektronix, 2 channels, 100MHz.

\$\endgroup\$
4
  • \$\begingroup\$ The scope thinks you're using a 10X probe. Set the "Probe" parameter to 1X on each channel. \$\endgroup\$
    – John Doty
    Feb 27 at 2:41
  • \$\begingroup\$ ...or toggle the 10x-switch on the probe \$\endgroup\$
    – Sim Son
    Feb 27 at 2:47
  • \$\begingroup\$ First thing you should do when turning on a scope is configuring your probes. \$\endgroup\$
    – DKNguyen
    Feb 27 at 2:50
  • \$\begingroup\$ Thank you very much. I tried to use the oscilloscope myself because the teacher didn't guide us. \$\endgroup\$ Feb 27 at 2:54

1 Answer 1

4
\$\begingroup\$

enter image description here

Set the channel to 10x and set the scope probe to 10x. They should always match.

It's almost always better to use 10x because the bandwidth will be better. The input-referred noise will be more however.

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.