Display
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TDS3000 Series User Manual
XY Waveform Restrictions. The math waveform, cursor, zoom, and
autoset functions do not work in the XY display format. All
reference waveforms displayed in XY format must have the same
record length (500 or 10,000 points).
Gated XYZ. Displays XY signals only when the Z (gating) channel is
true. Gated XYZ is similar to analog oscilloscope modulated XYZ
mode except that the displayed XY signal is either on or off; there is
no intensity modulation. Gated XYZ is useful for showing
constellation diagrams.
Push the Gated By screen button to select the Z (gate) source
channel.
The general purpose knob sets the Z-channel threshold level.
Z-channel signals above the set threshold are true and open the XY
signal gate; Z-channel signals below the set threshold are false and
close the XY signal gate. The gating channel is always a high-true
logic; to emulate a low-true gating logic, use the vertical menu to
invert the Z-channel signal.
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