User`s guide

56 5000 Series Oscilloscope User’s Guide
2 Front-Panel Controls
trigger mode to Auto (see page 92) and press the Single key. If a
trigger condition occurs within about 40 ms, it will be used; if a
trigger doesn’t occur, an untriggered acquisition will be taken.
To pan and zoom
You can pan across and zoom-in on a waveform even when the
acquisition system is stopped.
1 Press the Run/Stop key to stop acquisitions (or press the
Single key and allow the oscilloscope to acquire the waveform
and stop). The Run/Stop key is illuminated red when the
oscilloscope is stopped.
2 Turn the sweep speed knob to zoom horizontally and turn
the volts/division knob to zoom vertically.
The ∇ symbol at the top of the display indicates the time
reference point where the zoom-in/zoom-out is referenced.
3 Turn the Horizontal Position knob () to pan horizontally
and turn the channel’s vertical position knob ( ) to pan
vertically.
The stopped display may contain several triggers worth of
information, but only the last trigger acquisition is available for
pan and zoom.
For more information about Pan and Zoom see page 202.
Choosing Auto trigger mode or Normal trigger mode
In Auto trigger mode the oscilloscope will generate a trigger for
you if one is not found in a predetermined amount of time
(based on the selected sweep speed) after you press Run. If you
are probing a DC level and you want to see it displayed, set the
trigger mode to Auto (see page 92). If a trigger condition occurs,
it will be used; if a trigger doesn’t occur, an untriggered
acquisition will be taken.
If you press Run when the oscilloscope is in Normal trigger
mode, a trigger must be detected before the oscilloscope
displays an acquisition.