InsightCM Fmax Value Does Not Change Frequency Axis Range

Updated Aug 31, 2018

Reported In

Software

  • InsightCM

Issue Details

I changed the Fmax value on my spectrum graph in the InsightCM Data Explorer, but the range of the frequency axis does not change in response. Why?

Solution

The Fmax value is inherently limited by the sampling rate that you are collecting your data at. The range of your graph will only display up to a certain Fmax value, regardless of what Fmax is set to. The basic equation for sampling rate is as follows:

Fs ≥ 2.56 * fmax

Where:

Fs = sample rate in hertz

fmax = maximum frequency of interest in hertz

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