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Chapter 2 To Set the Vertical System RIGOL
DS8000-R User Guide 2-5
and the Impedance menu is grayed out and cannot be modified.
Bandwidth Limit
DS8000-R series supports the bandwidth limit function. Setting the bandwidth limit
can reduce the noises in the displayed waveforms. For example, the signal under test
is a pulse with high frequency oscillation.
âš« When the bandwidth limit is disabled, the high frequency components of the
signal under test can pass the channel.
âš« When you enable the bandwidth limit and limit it to 20 MHz, 250 MHz, or 500
MHz, the high frequency components found in the signal under test that are
greater than 20 MHz, 250 MHz, or 500 MHz are attenuated.
Note: The bandwidth limit is different for different models.
Click the channel status label and select the desired bandwidth limit in the CH1
setting menu. When the bandwidth limit is enabled, the character "B" will be
displayed in the channel status label at the bottom of the screen, as shown in the
figure below.
The bandwidth limit that you select is based on the input impedance of your
oscilloscope model, as shown in Table 2-1.
Table 2-1 Bandwidth Limit
Input Impedance of
the Oscilloscope
Available Bandwidth Limit
50 Ω
DS8104-R/DS8204-R: 20 M
DS8034-R: 20 MHz, 250 MHz
1 MΩ
DS8104-R/DS8204-R: 20 MHz, 250 MHz, 500 MHz;
DS8034-R: 20 MHz, 250 MHz
Note: Bandwidth limit can not only reduce the noise, but also can attenuate or
eliminate the high frequency components of the signal.
Probe Ratio
DS8000-R series allows you to set the probe attenuation manually. To obtain the
correct measurement results, you must set the probe ratio properly. By default, the
probe ratio is 1X.
Click the CH1 channel status label to open the setting menu of CH1. Then, click
Attenuation to select the desired probe ratio. The probe ratio values available are
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