Rigol DHO4204 DHO4000 series user manual

Loading ...

Click or tap the channel status label at the bottom of the screen, and then the

Vertical menu is displayed. Click or tap the BW Limit drop-down button to select the

specified bandwidth. When the bandwidth limit is enabled, the specific bandwidth

limit value will be displayed in the channel status label at the bottom of the screen, as

shown in the figure below.

• When the bandwidth limit is turned off, the high frequency components of the

signal under test can pass the channel.

• When the bandwidth limit is turned on, the high frequency components found in

the signal under test that are greater than the limit are attenuated. The table

below lists the available bandwidth limits for different models.

Table 5.1 Bandwidth Limit

Model Available Bandwidth Limits

DHO4404/DHO4804 20 MHz, 250 MHz

DHO4204 20 MHz

TIP

• For DHO4404 and DHO4804, when the vertical scale is less than or equal to 500 μV, you

can only set the bandwidth limit to 20 MHz or 250 MHz, but cannot turn off the limit;

when the vertical scale is less than or equal to 200 μV, the bandwidth limit is fixed to 20

MHz.

• When the vertical scale is decreased to 500 μV from above 500 μV, the 250 MHz

bandwidth limit is automatically enabled; once decreased to 200 μV, the 20 MHz

bandwidth limit will be automatically enabled. In this case, when the vertical scale is

adjusted to 500 μV, the 250 MHz bandwidth limit will be enabled. When the vertical scale

is adjusted to above 500 μV, the bandwidth limit is automatically disabled.

TIP

Bandwidth limit can not only reduce the noise, but also can attenuate or eliminate the high

frequency components of the signal.

5.6 To Specify Input Impedance

To reduce the circuit load between the oscilloscope and the circuit under test, this

oscilloscope provides two input impedance modes: 1 MΩ (default) and 50 Ω. In the

Vertical System

DHO4000 User Guide

Loading ...

Rigol DHO4204 oscilloscope