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go one step further by including the ability to further examine the signal
details after acquiring them by panning through the waveform and
changing the horizontal scale.
There is no limit imposed on the scaling ratio between the time/div used
to acquire the data and the time/div used to view the data. There is,
however, a useful limit. This useful limit is somewhat a function of the
signal you are analyzing.
Zooming into stopped acquisitions
N O T E
The screen will still contain a relatively good display if you zoom-in horizontally by a factor
of 1000 and zoom-in vertically by a factor of 10 to display the information from where it was
acquired. Remember that you can only make automatic measurements on displayed data.
To change the horizontal time mode (Normal, XY, or Roll)
1 Press [Horiz].
2 In the Horizontal Menu, press Time Mode; then, select:
Agilent InfiniiVision 4000 X-Series Oscilloscopes User's Guide
Normal — the normal viewing mode for the oscilloscope.
•
In the Normal time mode, signal events occurring before the trigger
are plotted to the left of the trigger point ( ) and signal events after
the trigger plotted to the right of the trigger point.
XY — XY mode changes the display from a volts- versus- time display
•
to a volts- versus- volts display. The time base is turned off. Channel 1
amplitude is plotted on the X- axis and Channel 2 amplitude is
plotted on the Y- axis.
You can use XY mode to compare frequency and phase relationships
between two signals. XY mode can also be used with transducers to
display strain versus displacement, flow versus pressure, volts versus
current, or voltage versus frequency.
Use the cursors to make measurements on XY mode waveforms.
For more information about using XY mode for measurements, refer
to
"XY Time Mode"
on page 70.
Horizontal Controls
69
2
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