9-10
IM DLM3054-01EN
• Frequency Band (Band)
You can set the frequency band to one of the settings below.
• LowPass
• HighPass
• BandPass
• Cutoff frequency (Cutoff1/Cutoff2)
Set for Filter1 and Filter2 separately.
Selectable range: 2.0% to 30.0% of the sampling frequency
Resolution: 0.2% of the sampling frequency
Averaging on Computation (Average)
Set whether or not to linearly average the user-defined computation data. This setting applies to Math1 to Math4.
• ON: Averages computed data
• OFF: Does not average computed data
• Average Count (Average Count)
Selectable range: 2 to 1024 in 2
n
steps
• If you change the computation conditions while averaging on computation is on, the computed data up to
that point is cleared.
• Averaging on computation cannot be used if the trigger mode is set to N SINGLE.
• You cannot average computations during waveform acquisition.
• You cannot average computations that are recomputed after waveform acquisition.
Auto Scaling (Auto Ranging)
Executes auto scaling. Use this feature when the computed waveform amplitude changes greatly and it is
difficult to view the waveform.
You can also set the display range by specifying the vertical center (Center) of the display area and the value per
division (Sensitivity).
Computation on History Waveforms (Math on History)
This feature performs computation on all history waveforms.
If waveform acquisition is stopped and you press the Math on History soft key, the instrument performs user-
defined computation on all of the source channel’s history waveforms.
• You cannot execute computation on history waveforms during waveform acquisition.
• While computation on history waveforms is in progress, the “computing” icon and a progress bar appear at
the top of the screen. All operations except for that of the Abort soft key are invalid.
• If you set the trigger mode to N Single and start waveform acquisition, the instrument performs user-
defined computation on the last waveform after waveform acquisition stops. To perform user-defined
computation on all history waveforms, execute computation on history waveforms.
• If you change a setting that would affect the result of user-defined computation, the instrument only
recomputes on the selected history waveform.
• If an error occurs in the average display or statistical processing of a history waveform, execute
computation on history waveforms.
9 Computed and Reference Waveforms