No Filter option

Forum for discussing PicoScope version 6 (non-automotive version)
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Nanoxav
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Joined: Thu Feb 22, 2018 8:57 am

No Filter option

Post by Nanoxav »

Hi,

I am trying to measure the photocurrent generated with highly resistive sample. To have the current I place a resistor in series to measure the voltage change at its terminals using the picoscope 6. But when I am using a resistor higher than 1Mohm, problem appears (Might come from the intern resistance of the Picoscope, I'm using a picoscope 2204A). The signal is perturbated by another one with a higher frequency than the one I try to measure.

So I want to use a low pass filter to extract my signal but when I click to "Edit a measure" I do not have "advanced" button, so I cannot use a filter.

I tried to do it using math channel but there is still the syntax problem... (French version of Picoscope 6.12.9)

Any advice would me very helpful.

Thanks in advance,
Xavier

Martyn
Site Admin
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Posts: 4491
Joined: Fri Jun 10, 2011 8:15 am
Location: St. Neots

Re: No Filter option

Post by Martyn »

Can you send a psdata file to support@picotech.com we can then take a look in more detail. Please include a circuit diagram showing where and how you are measuring the current.
Martyn
Technical Support Manager

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