User Manual

6 To Make Measurements RIGOL
MSO4000D/S4000 User’s Guide
6-11
3. Function
Please refer to the following table to get the functions of each function. Note
that 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 differentiation of the selected
source. You can use differentiate to measure the
instantaneous slope of a waveform.
Ln( Calculate the natural logarithm of the selected source (use
constant e (approximately 2.718282) as the base
Lg( Calculate the natural logarithm of the selected source (use
constant e (approximately 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.
Abs( Calculate the absolute value of the source selected.
Square( Calculate the square value of the source selected.
Sine( Calculate the sine value of the selected source.
Cosine( Calculate the cosine value of the selected source.
Tangent( Calculate the tangent value of the selected source.
4. Variable
Users can set the desired values of Variable1 and Variable2. Press Variable and
turn on the setting menu as follows.
 Variable: press this softkey to select the variable to be set as “Variable1”
and “Variable2”.
 Step: press this softkey to set the step used when using the knob to modify
the “Mantissa”. The steps available are × 1, × 0.1, × 0.01, × 0.001 and ×
0.0001.
 Mantissa: press this softkey to set the number of significant digits of the
variable. After setting the “Step” and pressing this softkey, turn the knob to
modify this parameter. The range available is from -9.9999 to 9.9999.