Agilent Technologies 4000 X-Series User Manual page 101

5 To make other measurements, press the [Meas] key and set the Source
The following FFT spectrum was obtained by connecting a 2.5 V, 100 kHz
square wave to channel 1. 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 •
•
Agilent InfiniiVision 4000 X-Series Oscilloscopes User's Guide
Use the X1 and X2 cursors to measure frequency values and difference
between two frequency values ( X). Use the Y1 and Y2 cursors to
measure amplitude in dB and difference in amplitude ( Y).
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.
"FFT Measurement Hints"
"FFT Units" on page 103
on page 102
4
Math Waveforms
101