Agilent Technologies InfiniiVision DSO6014L, Руководство пользователя

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88 6000 Series Oscilloscope User’s Guide
2 Front-Panel Controls
•
When the horizontal mode is set to Delayed, the delay
knob controls the position of the delayed sweep window
inside the main sweep display. This delay value is
independent of sampling interval and sweep speed.
Changing this delay value does not effect the position of
the main window.
5
Turn the delay knob ( ) and notice that its value is
displayed in the status line.
The delay knob moves the main sweep horizontally, and it
pauses at 0.00 s, mimicking a mechanical detent. Changing
the delay time moves the sweep horizontally and indicates
how far the trigger point (solid inverted triangle) is from the
time reference point (hollow inverted triangle
∇
). These
reference points are indicated along the top of the display
grid. The previous figure shows the trigger point with the
delay time set to 400
µ
s. 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, and these events are called pre-trigger
information. You will find this feature very useful because
you can now see the 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 sweep speed selected and memory depth.
Delayed mode
Delayed sweep is an expanded version of main sweep. When
Delayed mode is selected, the display divides in half and the
delayed sweep
icon displays in the middle of the line at the
top of the display. The top half of the display shows the main
sweep and the bottom half displays the delayed sweep.
Delayed sweep is a magnified portion of the main sweep. You
can use delayed sweep to locate and horizontally expand part of
the main sweep for a more detailed (higher-resolution) analysis
of signals.