User`s guide

50 5000 Series Oscilloscope User’s Guide
2 Front-Panel Controls
horizontal time/division vernier and select the trigger time
reference point on this menu. See “To set up the Horizontal time
base” on page 65.
19. Horizontal Sweep Speed Control Turn the knob in the
Horizontal section that is marked to adjust the sweep
speed. The symbols under the knob indicate that this control
has the effect of spreading out or zooming in on the waveform
using the horizontal scale. The horizontal sweep speed control
changes the time per horizontal division on the display. See “To
set up the Horizontal time base” on page 65.
20. Measure Keys Press the Cursors key to switch on cursors
that you can use for making measurements. Press the Quick
Meas key to access a set of predefined measurements. See
Chapter 4, “Making Measurements,” starting on page 149.
21. Display The display shows captured waveforms using a
different color for each channel. For more information about
display modes see Chapter 5, “Displaying Data,” starting on
page 201. Signal detail is displayed using 256 levels of intensity.
For more information about viewing signal detail see “Varying
the intensity to view signal detail” on page 208.
22. Entry Knob The entry knob is used to select items from
menus and to change values. Its function changes based upon
which menu is displayed. Note that the curved arrow
symbol above the entry knob illuminates whenever the
entry knob can be used to select a value. Use the entry knob to
select among the choices that are shown on the softkeys.
23. AutoScale Key When you press the AutoScale key the
oscilloscope will quickly determine which channels have
activity, and it will turn these channels on and scale them to
display the input signals. See “How AutoScale Works” on
page 251
24. Softkeys The functions of these keys change based upon
the menus shown on the display directly above the keys.