9-4 IM 701450-01E
Explanation
This section describes the procedures for selecting addition, subtraction, or multiplication
in normal computation mode. If the user-defined computation option is installed, you
must first enter normal computation mode as described in section 9.1. For a description
of the setup procedure for user-defined computation, see section 9.9.
Turning ON/OFF the Computed Waveform Display
The display of the computed waveforms Math1 and Math2 can be turned ON/OFF
separately. For details, see section 9.1.
Operator
Select the addition, subtraction, or multiplication operator (+, –, or ×) as the operator of
Math1 and Math2. Addition, subtraction, and multiplication can be performed between
the waveforms to be computed.
Subtraction (–)Addition (+)
Multiplication (*)
Waveform to be
computed
Computed waveform
Waveform to Be Computed
The waveforms on which computation can be performed are as follows:
Computation Name Source1 Source2
Math1 CH1 or CH2 One channel from CH1 to CH4
Math2 CH3 or CH4 One channel from CH1 to CH4 and Math1
• On the menu, CH1 to CH4 may be indicated as C1 to C4 and Math1 as M1.
• To perform computation on CH5 to CH8 on the DL7480, the optional user-defined
computation function is required.
Scaling
Scaling used to display computed waveforms Math1 and Math2 can be selected
separately.
Auto
Set to auto scaling. The vertical center line level (voltage value if set to voltage) of the display
frame and the sensitivity (voltage value per division if set to voltage) are automatically
determined to display the computed waveform.
Manual
Set to manual scaling. The following items can be specified as necessary to display the
computed waveform. The selectable range is –9.9999E+30 to 9.9999E+30.
• Center
The vertical center line level (voltage value if set to voltage) of the display frame can be
specified.
• Sensitivity
The sensitivity (voltage value per division if set to voltage) can be specified.
Vertical center line
(Center)
Sensitivity
When the screen is divided
Center
Sensitivity
9.2 Adding, Subtracting, and Multiplying Waveforms
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