Tektronix WFM2200A, Руководство пользователя

Страница: 245 / 276

Figure 72: Audio levels
To check audio phase
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:
■ 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
WFM2300 and WFM2200A Waveform Monitors User Manual 223