Measurements
Concepts
2Ć16
H
Tracking mode cursors operate in tandem: you move both cursors at the
same time using the general purpose knob. To adjust the solid cursor
relative to the dashed cursor, press the TOGGLE button to suspend
cursor tracking and use the general purpose knob to make the adjust-
ment. Pressing the TOGGLE button a second time toggles the cursors
back to tracking.
See
Cursor Measurements beginning on page 3-19 for more detailed informa-
tion about how to use cursors.
Automated Measurements
Automated measurements can be made by pressing a few buttons. They are
more accurate than cursor or graticule measurements because they are
automatically calculated using the waveform record points.
Press the MEASURE button for the automated measurement menus. These
menus let you make measurements for
amplitude (typically in volts; some-
times in %),
time (typically in seconds or hertz), and area (in volt-seconds).
You can select and display up to four measurements at a time. (See Table 3-4
on page 3-65 for a list of all the automatic measurements and their defini-
tions.)
Automated measurements can be made on the entire waveform record or just
on a specific part. The gating selection in the Measurement menu lets you
use the vertical cursors to limit the measurement to a section of the waveform
record.
The snapshot selection in the Measurement menu lets you display almost all
of the measurements at once. You can read about snapshot under
Snapshot
of Measurements on page 3-74.
Automated measurements use readouts to show measurement status. These
readouts are updated as the oscilloscope acquires new data or if you change
settings.
See
Appendix C: Algorithms, on page A-25, for details on how the oscillo-
scope calculates each automatic measurement.
See
Cursor Measurements, on page 3-19, for more information on cursor
measurements.
See
Measurement System, on page 3-65, for more information on automatic
measurements.
See the
TDS Family Option 2F Instruction Manual (if your oscilloscope is
equipped with that option) for using cursors to measure Fast Fourier Trans-
formed, integrated, or differentiated math waveforms.
See
Tutorial Example 3: Automated Measurements, on page 1-12.
See
Waveform Math, on page 3-119, for using cursors to measure math
waveforms.
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