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Cursor
3- 22
TDS3000B Series User Manual
Measurements. The XY waveform cursor measurements show
difference (
n
) and absolute (@) values for the X axis, the Y axis,
and the time of the active cursor.
n X: 1.43V @X: -140mV
n Y: 2.14V @Y: 480mV
n t: -660ns @t: 1.61ms
There are two waveform cursors; a reference cursor (
)
, and a delta
cursor ( ). All difference (
n
) measurements are measured from the
reference cursor to the delta cursor. A negative
n
X measurement
means that the delta cursor is positioned earlier in the waveform
record than the reference cursor. A negative
n
Y measurement means
that the delta cursor is positioned at a lower Y waveform signal level
than the reference cursor.
All absolute (@) measurements are referenced to the XY waveform’s
0, 0 origin, and show the value of the active cursor.
0, 0 Origin. The XY waveform origin is the 0 volt point of each source
waveform. Positioning both source waveform 0 volt points on the
vertical center graticule places the origin in the center of the screen.
Switching Between XY and YT. You can switch between XY and YT
display mode to see the location of the cursors in the YT waveform.
The waveform record icon at the top of the graticule also shows the
relative cursor positions in the waveform record.
Waveform Sources. You can use XY cursors on active acquisitions,
single sequence acquisitions, and reference waveforms. You need to
store both XY source waveforms in order to recreate an XY
waveform. The X axis waveform must be stored in Ref1.