SIGLENT SDS1000D Manual de usuario descargar pdf (Pagina 70)

the trigger point. This is also called the pre-trigger.

2）. Continue to acquire data while waiting for the trigger condition to occur.

3）. Detect the trigger condition.

4）. Continue to acquire data until the waveform record is full.

5）. Display the newly-acquired waveform.

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Time Base: The oscilloscope digitizes waveforms by acquiring the value of

an input signal at discrete points. The time base allows you to control how

often the values are digitized.

To adjust the time base to a horizontal scale that suits your purpose, use the

S/div knob.

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Time Domain Aliasing：

：：

：

Aliasing occurs when the oscilloscope does not sample the signal fast

enough to construct an accurate waveform record. When this happens, the

oscilloscope displays a waveform with a frequency lower than the actual

input waveform, or triggers and displays an unstable waveform.

Sampled points

Apparent low-frequency

waveform due to aliasing

Actual high-frequency waveform

Picture 2.9-5

Operate Introduction:

Set up Sampling Format

You can press the “Acquisition” option button or turn the “Universal” knob

to select “Sampling” mode, “Peak Detect” mode or “Average” mode..

Set up Averages

When you select “Average” format, you can press the “Averages” option

button to select “4”, “16”, “32”, “64”, “128”or “256”.

Set up function interpolation

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SIGLENT SDS1000D Manual de usuario Pagina 70