Agilent Technologies InfiniiVision 6000 Series, User Manual, Page: 208 / 368

208 6000 Series Oscilloscope User’s Guide
5 Making Measurements
To use the XY horizontal mode
The XY horizontal mode converts the oscilloscope from a
volts-versus-time display to a volts-versus-volts display using
two input channels. Channel 1 is the X-axis input, channel 2 is
the Y-axis input. You can use various transducers so the display
could show strain versus displacement, flow versus pressure,
volts versus current, or voltage versus frequency. This exercise
shows a common use of the XY display mode by measuring the
phase difference between two signals of the same frequency
with the Lissajous method.
1
Connect a sine wave signal to channel 1, and a sine wave
signal of the same frequency but out of phase to channel 2.
2 Press the AutoScale key, press the Menu/Zoom key, then press
the
XY
softkey.
3
Center the signal on the display with the channel 1 and 2
position (
) knobs. Use the channel 1 and 2 volts/div knobs
and the channel 1 and 2
Vernier
softkeys to expand the signal
for convenient viewing.
The phase difference angle (
θ
) can be calculated using the
following formula (assuming the amplitude is the same on
both channels):
θ
sin
A
B
--- or
C
D
----
=