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IM 701310-01E
2.7 Computation
Prescaling and
Rescaling ►For the procedure, see sections 9.2 to 9.7
Prescaling linearly scales the source waveform before carrying out computation. The
computation uses the scaled values.
Rescaling linearly scales the results of the computation.
Computed Waveform Display
By setting a computation equation for each of CH1 to CH4, and M1 to M4, a maximum of
eight computed waveforms can be displayed.
Through (
Linear Scaling) ►For the procedure, see section 9.2
By setting Through, linear scaling only can be carried out.
Addition, Subtraction, and Multiplication ►For the procedure, see section 9.3
Addition, subtraction, and multiplication can be applied to any of CH1 to CH4, using
the input waveform of the channel itself together with the waveform of any of CH1 to
CH4 and REF1 to REF4 as operands, and can be applied to M1 to M4, using any two
waveforms of CH1 to CH4 and REF1 to REF4 as operands. The computation result is
used as the waveform (computed waveform) for CH1 to CH4 or M1 to M4.
The addition (+) and subtraction (–) functions are convenient for comparison with a
reference signal, checking signal logic, or phase comparison, and multiplication (
×
) can
be used to check the power waveform when inputting a voltage signal and current signal.
Integration ►For the procedure, see section 9.4
This integrates the selected waveform. Taking the specified integration start point as 0,
the entire region is calculated, counting up toward the newest data, and counting down
toward the oldest data. For CH1 to CH4 the computation applies to the input waveform of
the channel itself, and for M1 to M4 applies to any of CH1 to CH4 and REF1 to REF4.
Phase Shift ►For the procedure, see section 9.5
A waveform can be displayed phase-shifted. To advance the phase, set a positive value,
and to delay the phase, set a negative value.
IIR Filter ►For the procedure, see section 9.6
High-frequency noise can be filtered out (with a low-pass filter), or low-frequency noise
can be filtered out (with a high-pass filter).
You can select a first-order filter or a second-order filter. When a second-order filter is
selected, there is no phase delay.
Smoothing ►For the procedure, see section 9.7
A waveform can be displayed smoothed, by removing noise with a sliding average.
Edge Count ►For the procedure, see section 9.8
This counts edges of a selected waveform. Taking the specified count start point as 0,
the entire region is calculated, counting up toward the newest data, and counting down
toward the oldest data. For CH1 to CH4 the computation applies to the input waveform of
the channel itself, and for M1 to M4 applies to any of CH1 to CH4 and REF1 to REF4.
