Knob 
 
 
Adjust waveform brightness: 
In non-menu-operation mode (menu is hidden), turn this 
knob to adjust the brightness of waveform display. The 
adjustable range is from 0% to 100%. Turn clockwise to 
increase the brightness and counterclockwise to reduce. 
Press down this knob to reset the brightness to 50%. 
You can also press Display  WaveIntensity and use 
the knob to adjust the waveform brightness. 
 
Multifunction (the backlight goes on during operation): 
In menu operation, press any menu softkey and turn the knob to select the 
submenus under this menu and then press down the knob to select the current 
submenu. It can also be used to modify parameters and input filename. In addition, 
for MSO2000A-S and DS2000A-S models oscilloscopes, in the source interface, 
press the corresponding menu softkey and then press the knob; the numeric 
keyboard will pop-up on the screen and you can input the desired parameter value 
and unit directly using this knob.  
 
 
Navigation Knob 
 
 
This knob provides quick Adjust/Locate function 
for numerical parameters with relatively large 
settable range. Turn clockwise 
(counterclockwise) to increase (reduce) the 
value. The inner knob is used for fine adjustment 
and the outer knob for coarse adjustment. 
For example, this knob can be used to quickly locate the waveform frame (“Current 
Frame” menu) to be played back in the waveform playback function. Similar menus 
include trigger holdoff, pulse width setting, slope time etc.