User Manual

Getting Started Manual
WA-GSM-E-RevA
35
To choose a sampling mode, press the ACQUIRE
front panel button. On the Acquire menu, press the
Acquisition option button and select a sampling
mode. If you select the Average sampling mode,
press the Averages option button and select the
number of waveforms (4, 16, 32, 64, 128, or 256).
Press the Mode option button and select Equ Time
or Real Time sampling.
Press the Sa Rate option button and turn the
Time/div front panel knob to display the sampling
rate at the corresponding timebase scale.
Acquiring Waveforms
You can choose to acquire a single waveform or to acquire waveforms
continuously. If you want to acquire a single waveform, press the SINGLE
front panel button. Each time you press the SINGLE front panel button, the
oscilloscope begins to acquire another waveform. After the oscilloscope
detects a trigger, it completes the acquisition and stops. If you want to
acquire waveforms continuously, press the RUN/STOP front panel button.
Press the button again to stop the acquisition.
When you start an acquisition, the oscilloscope goes through the following
steps:
1. Acquires enough data to fill the portion of the waveform record to the
left of the trigger point (pre-trigger).
2. Continues to acquire data while waiting for the trigger condition to
occur.
3. Detects the trigger condition.
4. Continues to acquire data until the waveform record is full.
5. Displays the waveform.
Changing the Timebase
The oscilloscope digitizes waveforms by acquiring the value of an input
signal at discrete points. The timebase allows you to control how often the
values are digitized. You can change the timebase using the Time/div front
panel knob in the Horizontal Control group. As you turn the Time/div front
panel knob, the value is displayed at the bottom of the screen.