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Mode
(Real Time)
Normal
Peak Detect
Average
Acquire and accurately display most waveforms.
Detect glitches and eliminate the possibility of aliasing.
Reduce random or uncorrelated noise in signal display. The number of averages is
selectable.
Averages
(Real Time)
4, 16,
64, 128
Select the number of averages by pressing F3 or F4.
Memory Depth (Real
Time)
4K, 16K, 64K
Select the memory depth for different board models.
Normal: For the oscilloscope model with the bandwidth of 100MHz, the maximum sample rate is 1GS/s. For time
base with insufficient sample rate, you may use the Sine Interpolation Algorithm to interpolate points between
sampled points to produce a complete waveform record (4K by default).
Peak Detect: Use this mode to detect glitches within 10ns and to limit the possibility of aliasing. This mode is valid at
the SEC/DIV setting of 4µs/div or slower. Once you set the SEC/DIV setting to 4µs/div or faster, the acquisition
mode will change to Normal because the sample rate is fast enough that Peak Detect is unnecessary. The
oscilloscope does not display a message to tell you that the mode has been changed to Normal.
Average: Use this mode to reduce random or uncorrelated noise in the signal to be displayed. Acquire data in
Normal mode and then average a great number of waveforms. Choose the number of acquisitions (4, 16, 64 or 128)
to average for the waveform.
Stopping the Acquisition: When you are running the acquisition, the waveform display is live. Stop the acquisition
(press the RUN/STOP button) to freeze the display. In either mode, the waveform display can be scaled or
positioned by vertical and horizontal controls.
Equivalent Acquisition: Just repeat the Normal acquisition. Use this mode to take a specific observation on
repeatedly displayed periodic signals. You can get a resolution of 40ps, i.e. 25GSa/s sample rate, which is much
higher than that obtained in real-time acquisition.
The acquisition principle is as follows.
