To Use The Xy Horizontal Mode - Agilent Technologies 6000 Series User Manual

5 Making Measurements

To use the XY horizontal mode

154
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 Main/Delayed 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 ( ) can be calculated using the
following formula (assuming the amplitude is the same on
both channels):
A C
-- - or --- -
sin
=
B D
6000 Series Oscilloscope User's Guide