Oscilloscope FFT Data Availability
How to access and use FFT data from an oscilloscope
Chris Armstrong
Last Update één jaar geleden
SIGLENT’s newer 12 bit scopes including the SDS800X HD, SDS1000X HD, and more include the capability to save FFT data to a USB drive or internal by setting the source in the save menu. Data sources for CSV data include: C1 ~ C4, Z1 ~ Z4 and F1 ~ F4.
That is all 4 channels, zoom windows, and math functions.
Additionally, other analysis can be done offline or in remote mode using SigScopeLab or custom programming.
SigScopeLab mirrors the capabilities of the instruments with some small additions.
A programming language like python can extract the data and either plot the FFT directly or recalculate it from the underlying data:
Some of the 8 bit oscilloscopes such as the SDS1000X-E series do not have the capability to save or transfer the math or FFT data directly. Users can capture the underlying waveform data either over the bus or to a USB stick and then conduct offline custom analysis.
This is the case for the following families: SDS1000CFL, SDS1000CML+/CNL+/DL+/E+/F+, SDS2000/2000X, SDS1000X/1000X+, SDS1000X-E/X-C, SDS2000X-E, and SDS1000X-U oscilloscopes.
To get access to the FFT data directly from the scope, consider a SDS2000X Plus or higher 8 bit scope or a 12 bit HD scope.