Agilent Technologies 7000B Series User Manual page 167

Measurements and Math Functions 5
The example below shows a delay measurement between the rising edge of
channel 1 and the rising edge of channel 2.
Phase
Phase is the calculated phase shift from source 1 to source 2, expressed in
degrees. Negative phase shift values indicate that the rising edge of source
1 occurred after the rising edge of source 2.
Delay
---------------------------------------- - X 360
Phase =
Source 1 Period
InfiniiVision 7000B Series Oscilloscopes User's Guide 167