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Chapter 6 MATH and Measurement RIGOL
DS1000Z User Guide 6-21
Filter
DS1000Z provides 4 types of filters (Low Pass Filter, High Pass Filter, Band Pass Filter
and Band Stop Filter). The specified frequencies can be filtered by setting the
bandwidth.
Press MATH Math Operator to select "Filter":
Press Operation to enable or disable the "Filter" operation function.
Press Source to select the desired channel (CH1, CH2, CH3 or CH4).
Press Offset and use to adjust the vertical position of the operation results.
Press Scale and use to adjust the vertical scale of the operation results.
Press Scale Reset to adjust the vertical scale of the operation results to the
optimal value according to the current configuration.
Press Filter to select the desired filter type.
― : low pass, namely only the signals whose frequencies are lower
than the current cutoff frequency (ωc1) can pass the filter.
― : high pass, namely only the signals whose frequencies are greater
than the current cutoff frequency (ωc1) can pass the filter.
― : band pass, namely only the signals whose frequencies are greater
than the current cutoff frequency 1 (ωc1) and lower than the current cutoff
frequency 2 (ωc2) can pass the filter.
Note: The cutoff frequency 1 (ωc1) must be lower than the cutoff
frequency 2 (ωc2).
― : band stop, namely only the signals whose frequencies are lower
than the current cutoff frequency 1 (ωc1) or greater than the current cutoff
frequency 2 (ωc2) can pass the filter.
Note: The cutoff frequency 1 (ωc1) must be lower than the cutoff
frequency 2 (ωc2).
When "low pass" or "high pass" filter is selected, you need to set cutoff
frequency. Press ωc1 and use to adjust the cutoff frequency.
When "band pass" or "band stop" filter is selected, you need to set 2 cutoff
frequencies. Press ωc1 and use to adjust the cutoff frequency 1; press ωc2
and use
to adjust the cutoff frequency 2.
Note: The settable range of the bandwidth is related to the current horizontal
time base.
Press Options to set the start and end points of the operation results, enable or
disable waveform invert, etc.
― Press Start and use to set the start point of the operation results.
― Press End and use to set the end point of the operation results.
― Press Invert to enable or disable the inverted display function of the
waveform.
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