Figure 69: Audio Levels - Tektronix WFM8200 User Manual

To Check Audio Phase
WFM8200 and WFM8300 Waveform Monitors

Figure 69: Audio levels

1. Select Aux Display.
2. Select Phase Display to turn it on.
3. Select the Phase Style. Choose either a Lissajous Soundstage or X-Y
orientation for the Lissajous signal.
4. Select the phase pair to be displayed, or select Custom and select independent
channels using the Phase Channel A and Phase Channel B entries.
5. Set the Audio Input to match the signal that you are checking (or use the
Audio Follows Video mode set in the CONFIG menu).
6. Check for Phase correlation of the signals, noting the following: (See
Figure 70.)
Phase correlation meters are located under the appropriate bars and one is
duplicated under the phase display.
For identical and correlated signals, the indicator is white and moves to
the right side.
For highly correlated signals, the indicator is green and moves to the right
side.
For uncorrelated signals, the indicator is yellow and tends to stay in the
middle.
For anticorrelated signals (one goes up when the other goes down), the
indicator is red and moves to the left side.
Audio Monitoring
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