9-14
IM 701310-01E
Explanation
Low Pass Filter and High Pass Filter can be set by combining a temporary low pass filter
and a differentiator.
Waveform to Be Computed
Select from CH1 to CH4 or from REF1 to REF4. When CH1 to CH4 on the front panel
are used for operation, the waveform to be computed is fixed to the channel that is being
operated.
Setting the Cutoff Frequency
Can be set to a value up to 1 GHz.
Selecting the Filter Order: Filter Order
The setting differs, depending on the specified filter type.
Filter Type Filter order Phase change
High Pass 1 The phase advances.
Low Pass 1 The phase is delayed.
High Pass/Low Pass 2 Phase 0
Note
In the filter calculation (IIR filter), since the initial value is indeterminate, correct calculation
is not possible immediately after the start of calculation. With a first-order filter the left end of
the waveform is not shown, and with a second-order filter, both ends of the waveform are not
shown.
9.6 Setting a Filter (IIR Filter)
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