FFT Spectral Analysis 5
Keysight InfiniiVision 1200 X-Series and EDUX1052A/G Oscilloscopes User's Guide 59
3 To make cursor measurements, press the [Cursors] key and set the Source
softkey to Math N.
Use the X1 and X2 cursors to measure frequency values and difference between
two frequency values (ΔX). Use the Y1 and Y2 cursors to measure amplitude in
dB and difference in amplitude (ΔY).
4 To make other measurements, press the [Meas] key and set the Source softkey to
Math N.
You can make peak-to-peak, maximum, minimum, and average dB
measurements on the FFT waveform. You can also find the frequency value at
the first occurrence of the waveform maximum by using the X at Max Y
measurement.
To adjust the FFT waveform scale and offset, use the multiplexed scale and
position knobs next to the [Math] key to re-size and re-position the math
waveform.
The following FFT spectrum was obtained by connecting a 2.5 V, 100 kHz square
wave to channel 2. Set the horizontal scale to 50 µs/div, vertical sensitivity to
1 V/div, Units/div to 20 dBV, Offset to -40.0 dBV, Center frequency to 500 kHz,
frequency Span to 1 MHz, and window to Hanning.
See Also • "FFT Measurement Hints" on page 60
To Next Page
Loading...
