■ Average: The oscilloscope acquires several waveforms, averages them, and
displays the resulting waveform.
Advantage: You can use this mode to reduce random noise.
■ Equivalent Time Sampling:
The equivalent time sampling mode can achieve up to 20 ps of horizontal
resolution (equivalent to 50GSa/s). This mode is good for observing repetitive
waveforms.
■ Real Time Sampling: The scope has the highest Real-time sampling rate up
to 500MSa/s.
■ RUN/STOP Button: Press the RUN/STOP button when you want the
oscilloscope to acquire waveforms continuously. Press the button again to
stop the acquisition.
■ SINGLE Button: Press the SINGLE button to acquire a single waveform.
Each time you push the SINGLE button, the oscilloscope begins to acquire
another waveform. After the oscilloscope detects a trigger it completes the
acquisition and stops.
.
When you push the RUN/STOP or SINGLE buttons to start an acquisition, the
oscilloscope goes through the following steps:
●
Acquire
enough data to fill the portion of the waveform record to the left
of the trigger point. This is also called the pre-trigger.
●
Continue
to acquire data while waiting for the trigger condition to occur.
●
Detect
the trigger condition.
●
Continue
to acquire data until the waveform record is full.
●
Display
the newly-acquired waveform.
■ Base time: 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.
■ 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.
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, 128or 256.
Set up function interpolation
Press the Sinx/x option button to select On or Off,show as following pictures.
Actual high-frequency
waveform
Sampled point
Apparent low-frequency
waveform due to aliasing
Operate Introduction:
50
Digital
S
torage
O
scilloscope
Digital Storage Oscilloscope
51
