Tektronix TDS 640A Sprinkler User Manual


 
Waveform Differentation
TDS 620A, 640A & 644A User Manual
3Ć141
Figure 3Ć76:ăPeakĆPeak Amplitude Measurement of a Derivative
Waveform
Cursor Measurement of a Derivative Waveform
You can also use cursors to measure derivative waveforms. Use the same
procedure as is found under Waveform Integration on page 3Ć144. When
using that procedure, note that the amplitude measurements on a derivative
waveform will be in volts per second rather than in voltĆseconds as is indiĆ
cated for the integral waveform measured in the procedure.
When creating differentiated math waveforms from live channel waveforms,
consider the following topics.
Offset, Position, and Scale
Note the following tips for obtaining a good display:
H You should scale and position the source waveform so it is contained on
screen. (Off screen waveforms may be clipped, resulting in errors in the
derivative waveform).
H You can use vertical position and vertical offset to position your source
waveform. The vertical position and vertical offset will not affect your
derivative waveform unless you position the source waveform off screen
so it is clipped.
Usage
Considerations