REL #14 RBW, Frequency Interval △f, FFT Resolution, and Bin Width on an FFT oscilloscope
In this video, I explore various resolution-related values used in FFT oscilloscope. The video covers the theory, but also how this can be applied to three oscilloscopes.
And look into a mystery of the Rohde & Schwarz RTB2004 oscilloscope...
00:00 Welcome
01:06 What the manuals tell us
02:24 Meaning of Resolution BandWidth (RBW)
04:20 RBW on a classic Spectrum Analyzer
05:39 The concept of FFT bins
06:27 Formula to calculate bin width and RBW
08:08 Applying the formula on the Siglent SDS2000X+
12:13 Applying the formula on the Keysight DSOX1204G
14:32 Applying the formula on the Rohde & Schwarz RTB2004
18:26 The FFT mystery of the RTB
20:08 Conclusions