Getting Started 1
Agilent InfiniiVision 3000 X-Series Oscilloscopes User's Guide 35
 
4. Entry knob The Entry knob is used to select items from menus and to change values. 
The function of the Entry knob changes based upon the current menu 
and softkey selections.
Note that the curved arrow symbol  above the entry knob 
illuminates whenever the entry knob can be used to select a value. Also, 
note that when the Entry knob  symbol appears on a softkey, you 
can use the Entry knob, to select values.
Often, rotating the Entry knob is enough to make a selection. Sometimes, 
you can push the Entry knob to enable or disable a selection. Pushing the 
Entry knob also makes popup menus disappear.
5. Tools keys The Tools keys consist of:
• [Utility] key — Press this key to access the Utility Menu, which lets 
you configure the oscilloscope's I/O settings, use the file explorer, set 
preferences, access the service menu, and choose other options. See 
Chapter 19, “Utility Settings,” starting on page 283.
• [Quick Action] key — Press this key to perform the selected quick 
action: measure all snapshot, print, save, recall, freeze display. and 
more. See “Configuring the [Quick Action] Key" on page 298.
•[Analyze] key — Press this key to access analysis features like 
trigger level setting, measurement threshold setting, Video trigger 
automatic set up and display, mask testing (see Chapter 15, “Mask 
Testing,” starting on page 239), or the DSOX3PWR power 
measurement and analysis application.
•[Wave Gen] key — Press this key to access waveform generator 
functions. See Chapter 16, “Waveform Generator,” starting on page 
251.
6. Trigger controls These controls determine how the oscilloscope triggers to capture data. 
See Chapter 10, “Triggers,” starting on page 141 and Chapter 11, “Trigger 
Mode/Coupling,” starting on page 177.