9-21
9
IM 701830-01E
Waveform Analysis
The allowable range for the threshold level varies depending on the specified waveform as
shown below.
Channel waveform: 8 div within the display screen (setting resolution is 0.1 div)
Math waveform: –1.0000E+30 to 1.0000E+30
FFT
For a description of the FFT, refer to points, FFT frequency band, and window in Section 9.8
“Displaying Power Spectrums.”
For details on digital filters and the FFT, refer to Appendix 6.
Operating Procedure
1.
Press the “
MATH
” key.
2.
Press the “
Mode
” soft key several times to select “
UserDefine
.”
User define the computing equation
3.
Press the “
Expression Math1
” or “
Expression Math2
” soft key to display the A menu
for setting the equation is displayed.
4.
Move the cursor to the desired equation and press the
SELECT
key to select ON or OFF.
5.
Move the cursor to the area for entering the equation and press the
SELECT
key to display
the keyboard.
6.
Input the computing equation. For information on how to input character strings, refer to
Section 4.1 “Entering Values and Character Strings”.
→
Setting the computing range and units
Refer to Section 9.3 “Setting Computing Range and Display Units, and Recomputing”.
Note
If you changed the start point of computation or changed the computing range, recompute. For details on
recomputing, see section 9.3.
9.10 Executing User Defined Computation (Optional)
