Rigol DS2000E Series, Руководство пользователя, Страница: 137 / 283

Chapter 6 MATH and Measurements RIGOL
DS2000E User’s Guide 6-7
Digital Filter
DS2000E provides 4 types of digital filters (Low Pass Filter, High Pass Filter, Band
Pass Filter and Band Reject Filter). The frequencies for the specified waveform band
can be filtered by setting the bandwidth range. Press MATH

Operate to select
"Digital Filter" and set the parameters of the digital filter.
1.
Select the Filter Type
Press Filter Type to select the desired filter type.

: low pass, namely only the signals whose frequency are lower
than the current Upper Limit can pass the filter.

: high pass, namely only the signals whose frequency are greater
than the current Lower Limit can pass the filter.

: band pass, namely only the signals whose frequency are greater
than the current Lower Limit and lower than the current Upper Limit can
pass the filter.

: band reject, namely only the signals whose frequency are lower
than the current Lower Limit or greater than the current Upper Limit can
pass the filter.
2. Select the Source
Press Source to select the desired channel (CH1 or CH2).
3. Set the Bandwidth
When "low pass" filter type is selected, you only need to set the frequency upper
limit; when "high pass" filter type is selected, you only need to set the frequency
lower limit; when "band pass" or "band reject" filter type is selected, you need
to set both the frequency upper limit and lower limit.
Note: The settable range of the bandwidth is related to the current horizontal
time base.
Press Upper Limit and use
to adjust the frequency upper limit of the filter.
Press Lower Limit and use to adjust the frequency lower limit of the filter.