Measuring Relative Phase
6Activate two traces:
Press [Shift], [A] (two Active Trace LEDs are now turned on)
7Turn on marker coupling and zero the offset marker on the carrier:
Press [Marker], [couple mkrs on],
Press [Shift], [Marker] to place the marker on the carrier peak, Press [Shift], [Marker⇒ ] to zero the offset marker.
8Use the search marker to measure the phase of the two largest sidebands relative to the carrier:
Press [Marker Search], [next peak], and note the phase displayed for the lower trace. Press [next peak] again and note the phase.
The phase values vary with each sweep but for an AM signal the average phase of the sidebands is equal to the carrier phase.
