User`s guide

Measurements and Math Functions 6
InfiniiVision Oscilloscopes User’s Guide 205
The example below shows a phase measurement between the channel 1 and the math
d/dt function on channel 1.
Voltage Measurements
Measurement units for each input channel can be set to Volts or Amps using the channel
Probe Units softkey. A scale unit of U (undefined) will be displayed for math function 1-2
and for d/dt, and  dt when 1-2 or 1+2 is the selected source if channel 1 and channel 2
are set to dissimilar units in the channel Probe Units softkey.