Chapter 6 MATH and Measurements RIGOL
DS2000E User’s Guide 6-11
During the expression editing, you can press Delete to delete the character
currently at the left of the cursor and press Clear to delete all the characters in the
entry box at any time. After finishing the expression editing, press Apply and the
oscilloscope will operate according to the expression you set and display the result.
Note: After Apply is pressed, the Expression menu will be automatically set to
"OFF" but the preset expression will still be displayed at the bottom of the screen for
your reference.
In addition, you can also press Invert to turn the inverted display of the operation
results on or off or press Label to set label for the math operation results (for the
details, refer to the introduction in "
MATH Label").
The following are descriptions of the contents in the editing window.
1. Expression
Here, it refers to the formulas formed by channel, function, variable, operator
and figure. The length of the expression should not exceed 64 characters.
2. Channel
You can select any channel of CH1 and CH2 or select both of the two channels.
3. Function
The functions of the functions are listed in the following table.
Note: The left brackets "(" here are only used to facilitate your entry and they
are not a part of the function names.
Table 6-3 Functions
Name Function
Intg( Calculate the integral of the selected source. You can use integral
to measure the area under a waveform or the pulse energy.
Diff( Calculate the discrete time differential of the selected source. You
can use differential to measure the instantaneous slope of a
waveform.
Lg( Calculate the common logarithm of the selected source (use 10 as
the base).
Exp( Calculate the exponent of the selected source. For example,
Exp(A) means calculate the Ath power of e.
Sqrt( Calculate the square root of the selected source.
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