Chapter 2 To Set the Vertical System    RIGOL 
MSO7000/DS7000 User Guide  2-5 
of the screen. The following window is displayed. Tap the    icon at the 
right side of the Offset input field to decrease or increase the offset. You can 
also tap the Offset input field to input a specific value with the displayed 
numeric keypad. 
 
 
 
 
 
 
Channel Coupling 
 
The undesired signals can be filtered out by setting the coupling mode. For example, 
the signal under test is a square waveform with DC offset. 
⚫  When the coupling mode is "DC": the DC and AC components of the signal under 
test can both pass the channel. 
⚫  When the coupling mode is "AC": the DC components of the signal under test 
are blocked. 
⚫  When the coupling mode is "GND", the DC and AC components of the signal 
under test are both blocked. 
 
Press 1 to open the setting menu of CH1. Then, press Coupling continuously or 
rotate the multifunction knob    to select the desired coupling mode (by default, it 
is DC). The current coupling mode is displayed in the channel status label at the 
bottom of the screen, as shown in the figure below. You can also enable the touch 
screen, and then touch the CH1 setting menu to select the desired coupling mode. 
 
                               
                              DC                                              AC                                      GND                         
 
Note:   
⚫  When the input impedance is set to "50 Ω", the channel coupling is set to DC 
coupling by force, and the Coupling menu is grayed out and cannot be 
modified. 
⚫  When the coupling mode is "AC", the input impedance is set to 1 MΩ by force, 
and the Impedance menu is grayed out and cannot be modified.