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Functions Menu
Acquisition Mode
Average number
of times
Equivalent
•
By changing acquisition setup you can observe the
consequent changes in waveform display. If the
signal contains considerable noise, you will see this
waveform displays when average sampling is not
selected:
•
When 32 time average sampling is selected you will
see this:
Note: Use Real Time Sampling to observe single
signals. In this mode the system makes full acquisition
to fill the memory. Maximum sampling rate is 2GS/s. At
a setting of 50ns or faster, the oscilloscope will automatically carry out interpolation ie:
inserting a sampling point between other sampling points.
Use Equivalent Sampling to observe high frequency cyclical signals. This is a
repeated sampling mode that allows detailed observation of repeated cyclical signals. In
the equivalent sampling mode, the horizontal resolution is 20ps higher than the real time
mode ie: 50GS/s equivalent.
Normal Mode is when the oscilloscope reconstructs the waveform by sampling signals
at regular intervals.
To avoid mixed envelope, select Peak Detect. In this mode the oscilloscope identifies
the maximum and minimum values of the input signals at each sampling interval and
use these values to display the waveform. In effect, the oscilloscope can acquire and
display narrow pulse which would otherwise be omitted in the sampling mode. Noise
seems to be more significant in this mode.
Average Mode is when the oscilloscope acquires several waveforms and take the
average value to display the final waveform. You can use this mode to reduce random
noise.
Envelop Mode The oscilloscope acquires multi-amplitude waveforms and calculate all
sampling points that synchronize with the triggering point. The maximum and minimum
values are then displayed.
Setup
Sample
Turn on the ordinary sampling mode
Peak detect
Turn on the peak detect mode
Average
Set the average sampling and display the average number
of times
Envelop
Envelop sampling
Set the average number of times in multiples of 2 ie: 2, 4,
2-256
8, 16, 32, 64, 128, 256 To change the average number of
times use the MULTIPURPOSE control on the front panel.
Turn the equivalent sampling mode on or off. In this mode,
ON / OFF
selecting alternate trigger (e.g. CH1 and CH2) as the trigger
source is disallowed
Notes
17
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