I wonder if someone would know of a scope that has a feature like the Tektronix FilterVu feature on the MSO and DPO 2000 series (variable low pass filter)?
I need to make a specific measurement of a low voltage (using the math channel to show the difference between 2 channels across a current sense resistor), but the voltage is so low that it gets lost in the background noise of the channels.
Someone performed the exact measurement (in an app note for a product test) using the FilterVu feature with a 60KHz low pass filter and it cleaned the signal right up so only the sense resistor waveform was present.
This series of scopes isn't available to me and I don't see the FilterVu feature on the DPO 4000 or 7000 series (which are available to me).
Does anyone know of a scope of any brand that would allow a feature like that low pass filtering to clean up the waveform or else is there another method you'd suggest (I'm not experienced with using current probes and we're trying to measure down to the low microamps level, even 0.6uA) so I am not sure what methods would work other than duplicating the measurement in the original app note using the FilterVu approach.
I need to make a specific measurement of a low voltage (using the math channel to show the difference between 2 channels across a current sense resistor), but the voltage is so low that it gets lost in the background noise of the channels.
Someone performed the exact measurement (in an app note for a product test) using the FilterVu feature with a 60KHz low pass filter and it cleaned the signal right up so only the sense resistor waveform was present.
This series of scopes isn't available to me and I don't see the FilterVu feature on the DPO 4000 or 7000 series (which are available to me).
Does anyone know of a scope of any brand that would allow a feature like that low pass filtering to clean up the waveform or else is there another method you'd suggest (I'm not experienced with using current probes and we're trying to measure down to the low microamps level, even 0.6uA) so I am not sure what methods would work other than duplicating the measurement in the original app note using the FilterVu approach.