13-6
IM DL350-01EN
Cursor Measurement on FFT Waveforms
Turning Cursor Measurement On and Off
• ON: Cursor measurement is performed.
• OFF: Cursor measurement is not performed.
Cursor Type (Type)
The following types of FFT waveform cursors are available.
•
: You can use four marker cursors to measure frequencies, levels, and the distances
between markers.
•
: You can use peak cursors to measure peak frequency and level values.
Marker Cursors (Marker)
You can measure the frequency and level at each marker and the frequency and level differences between
markers. You can select a measurement source waveform for each cursor.
Marker Settings (Marker Setup)
• Measurement Source Waveform (Trace)
Set the measurement source waveform for each marker to one of the waveforms below.
• OFF: Disables measurement.
• FFT1: The waveform in the FFT1 window is measured.
• FFT2: The waveform in the FFT2 window is measured.
• Marker Shape (Marker Form)
Set the shape of the displayed marker to one of the options below.
• Mark: A dot
• Line: A crosshair
Display Item (Display Item)
Marker cursors move on the waveform data. You can measure the following values at the markers.
X1
Frequency at Marker1
X2
Frequency at Marker2
X3
Frequency at Marker3
X4
Frequency at Marker4
Δ(X2-X1)
Frequency difference between Marker1 and Marker2
Δ(X3-X1)
Frequency difference between Marker1 and Marker3
Δ(X4-X1)
Frequency difference between Marker1 and Marker4
Δ(X3-X2)
Frequency difference between Marker2 and Marker3
Δ(X4-X2)
Frequency difference between Marker2 and Marker4
Δ(X4-X3)
Frequency difference between Marker3 and Marker4
Y1
Level at Marker1
Y2
Level at Marker2
Y3
Level at Marker3
Y4
Level at Marker4
Δ(Y2-Y1)
Level difference between Marker1 and Marker2
Δ(Y3-Y1)
Level difference between Marker1 and Marker3
Δ(Y4-Y1)
Level difference between Marker1 and Marker4
Δ(Y3-Y2)
Level difference between Marker2 and Marker3
Δ(Y4-Y2)
Level difference between Marker2 and Marker4
Δ(Y4-Y3)
Level difference between Marker3 and Marker4
13 FFT