Basic Measurements
1760 SeriesComponent Waveform/Vector Monitor User Manu al 4-15
Making Audio Measurements
An audio signal with no phase error appears as a straight line
extending from the audio box in the upper right corne r of the
graticule to the box in the lower left. A signal with phase
error appears as an opening in a Li ssajous waveform.
Figure 4-13 shows three audio input signals that are equal in
amplitude, but have different phase relationships.
Audio gain is set from the GAIN MENU when AUDIO displa y is
selected.Gainchoicesare0dBu,4dBu,8dBu,or12dBu.
Select gain relative to the system unde r test.
a.Correct Phase b.Phase Error of 180°
c. Phase Error of approximately 30°
Figure 4-13. Audiodisplays.