282
FFT Analysis Modes
Phase Spectrum
Shows the phase characteristics of the input signal.
Main uses:
• To inspect the phase spectrum of channel 1. Displays the phase of a cosine waveform as a reference
(0°).
•
To inspect the phase difference between channels 1 and 2.
About the Functions, refer to “13.9.2 Analysis Mode Functions” (p. 289).
Although the unit for angle is [ ° ], it is shown
[deg]
on the screen.
1ch FFT: Displays the phase of the signal on channel 1. Displays the phase of a cosine waveform as a
reference (0°). Unless the waveform is synchronous, phase values are unstable.
2ch FFT: Displays the phase difference between channels 1 and 2. Positive values indicate that the
phase of channel 2 is leading.
Axis
Display type
Description
X axis
Linear
Displays the frequency on a linear scale
Log
Displays the frequency on a logarithm scale
Y axis
Lin-Mag
Displays analysis values linearly.
Waveform Example
1ch FFT
X axis: Log
Y axis: Lin-Mag
2ch FFT
X axis: Log
Y axis: Lin-Mag
■ Emphasizing Only a Specific Portion (Highlighted Display)
A specific portion of a phase spectrum can be emphasized and displayed.
Refer to “13.3.8 Emphasize Analysis Results (Phase Spectra Only)” (p. 255).
Summary of Contents for MR8827
Page 19: ...14 Operation Precautions ...
Page 81: ...76 Start and Stop Measurement ...
Page 111: ...106 Manage Files ...
Page 125: ...120 Miscellaneous Printing Functions ...
Page 143: ...138 View Block Waveforms ...
Page 191: ...186 Setting Output Waveform Parameters ...
Page 291: ...286 FFT Analysis Modes Measurable Ranges With Octave Analysis 1 1 OCT 1 3 OCT ...
Page 292: ...287 FFT Analysis Modes 1 1 OCT 1 3 OCT 13 FFT Function ...
Page 293: ...288 FFT Analysis Modes 1 1 OCT 1 3 OCT ...
Page 295: ...290 FFT Analysis Modes ...
Page 309: ...304 Editor Command Details ...
Page 387: ...382 Module Specifications ...
Page 405: ...400 Dispose of the Instrument Lithium Battery Removal ...
Page 431: ...A26 FFT Definitions ...
Page 436: ......