Agilent Technologies 22A, 54621D To start and stop an acquisition, To make a single acquisition

Front-Panel Overview

To start and stop an acquisition

To start and stop an acquisition

•When the Run/Stop key is illuminated in green, the oscilloscope is in continuous running mode.

You are viewing multiple acquisitions of the same signal similar to the way an analog oscilloscope displays waveforms.

•When the Run/Stop key is illuminated in red, the oscilloscope is stopped.

“Stop” is displayed in the trigger mode position in status line at the top of the display. You may now pan and zoom the stored waveform by turning the Horizontal and Vertical knobs.

The stopped display may contain several triggers worth of information, but only the last trigger acquisition is available for pan and zoom. To ensure the display does not change, use the Single key to be sure you have acquired only one trigger.

•The Run/Stop key may flash between a user requesting a Stop and the completion of the current acquisition.

To make a single acquisition

The Single run control key lets you view single-shot events without subsequent waveform data overwriting the display. Use Single when you want maximum memory depth for pan and zoom and you want the maximum sample rate.

1First set trigger Mode/Coupling Mode softkey to Normal.

This keeps the oscilloscope from autotriggering immediately.

2If you are using the analog channels to capture the event, turn the Trigger Level knob to the trigger threshold where you think the trigger should work.

3To begin a single acquisition, press the Single key.

When you press Single, the display is cleared, the trigger circuitry is armed, the Single key is illuminated, and the oscilloscope will wait until a trigger condition occurs before it displays a waveform.

When the oscilloscope triggers, the single acquisition is displayed and the oscilloscope is stopped (Run/Stop key is illuminated in red). Press Single again to acquire another waveform.

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