Horizontal Control
36
Note:
Changing the delay time moves the trigger point (solid inverted triangle
) horizontally and indicates how far it is
from the time reference point (hollow inverted triangle
). These reference points are indicated along the top of the
display grid.
shows the trigger point with the delay time set to 170 µs. The delay time number tells you how far the time
reference point is located from the trigger point. When delay time is set to zero, the delay time indicator overlays the
time reference indicator.
All events displayed left of the trigger point happened before the trigger occurred. These events are called pre-trigger
information, and they show events that led up to the trigger point.
Everything to the right of the trigger point is called post-trigger information. The amount of delay range (pre-trigger
and post-trigger information) available depends on the time/div selected and memory depth.
The horizontal position knob works (in the Normal time mode) while acquisitions are running or when they are stopped.
When running, adjusting the horizontal scale knob changes the sample rate. When stopped, adjusting the horizontal
scale knob lets you zoom into acquired data.
The
Horizontal Position Knob
has a different purpose in the
Zoom display.
for more details
6.3
Panning and Zooming Single or Stopped Acquisitions
When the oscilloscope is stopped, use the touchscreen horizontal pinch or drag gestures or use the horizontal scale
and position knobs to pan and zoom your waveform. The stopped display may contain several acquisitions worth of
information, but only the last acquisition is available for pan and zoom.
The ability to pan (move horizontally) and scale (expand or compress horizontally) an acquired waveform is important
because of the additional insight it can reveal about the captured waveform. This additional insight is often gained from
seeing the waveform at different levels of abstraction. You may want to view both the big picture and the specific little
picture details. For example, figure
demonstrates how these features bring insight on the
waveform’s
rise time.
6.4
Horizontal Scale (Coarse/Fine)
To change the horizontal scale knob adjustment setting:
•
Push the
Horizontal Scale Knob
to toggle between fine and coarse adjustment.
When Fine is enabled, turning the horizontal scale knob changes the time/div (displayed in the status line at the top of
the display) in smaller increments. The time/div remains fully calibrated when Fine is on.
When Fine is turned off, the Horizontal scale knob changes the time/div setting in a 1-2-5 step sequence.
Содержание 2560B Series
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Страница 51: ...Digital Channels 51 Figure 8 9 Digital Bus...
Страница 127: ...Serial Trigger and Decode 127 Figure 10 63 Manchester Bus...
Страница 168: ...Reference Waveform 168 Figure 14 1 Recall REFB...
Страница 210: ...Save Recall 210 Figure 22 4 Save As...
