Oscilloscope Reference Waveform record
Sample Interval. This is the time between sample points taken during acquisition.
Record Length. This is the number of samples required to fill a waveform record.
Trigger Point. The trigger point marks the reference zero time in a waveform record. All waveform
samples are located in time (minus and/or plus) with respect to the trigger point.
Horizontal Position. When horizontal delay is off, the horizontal p osition is the time from the first
sample taken (first point in the waveform record) to the trigger point (in percent of samples before the
trigger). The trigger point and the horizontal reference are at the same time in the waveform record.
When horizontal delay is on, the Horizontal Position knob controls the horizontal delay time. The
horizontal delay is the time from the trigger point to the horizontal reference.
The waveform record and its defining parameters (horizontal delay on)
The previous figure shows that the instrument acquires points in order from left to right.
When all of the points in the waveform record have been sampled and digitized, the wa veform record
is stored in acquisition memory and becomes available for display (or use in math waveforms, storage,
and so on).
What do you want to do next?
Learn about Horizontal window considerations. (see page 684)
Le
arn about Horizontal Acquisition Window interrelated parameters.
(see page 684)
DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series 691
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