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Filter frequency response

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Filter frequency response

Postby erchanik » Sun Aug 24, 2014 12:24 pm

HI

Recently i have got PicoScope 6404C model and i know that it has AWG max 20mhz

How actually i can measure frequency response of sample filter
300px-Bandpass_Filter.svg.png
Sample Filter
300px-Bandpass_Filter.svg.png (3 KiB) Viewed 800 times
?
What and where i must connect?

Thank you
erchanik
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Re: Filter frequency response

Postby Karunen » Mon Sep 01, 2014 9:50 am

HI erchanik,

To check the frequency response you could connect the signal generator to channel A and the input of the filter.
Then connect channel B to the to the output of the filter.

You can then look at the signals in spectrum mode and this will show what frequencies exist in the signal.
http://www.picoscope.tv/general/spectrum-mode.html

Please note spectrum mode does not measure phase,
you can measure phase using the phase markers or using a maths channel in scope mode (http://www.picotech.com/support/topic13773.html?hilit=phase)

Kind Regards,
Karunen

Technical Specialist
Pico Technology
Karunen
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Re: Filter frequency response

Postby erchanik » Tue Sep 09, 2014 9:52 pm

Thank you
erchanik
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