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76 UTD1000L User Manual
equal-amplitude sinewave with very
close frequencies, broadband random
noise with relatively slow changing
spectrum.
Term Explanation
FFT Resolution: defined as Quotient between sample rate and operation points. When
operation points are fixed, the lower sample rate is, the better FFT resolution will be.
NYQUIST Frequency: For waveforms with highest frequency f, it at least needs to apply 2f
sample rate in order to recreate original waveform. It is called NYQUIST principle, f is NYQUIST
frequency and 2f is NYQUIST sample rate.
6.13 Autoset
Autoset is used to simplify the operations. Press AUTObutton and then the Oscilloscope will
automatically adjust vertical factor and timebase range based on the waveform amplitude and
frequency until the waveform displays steadily on the screen. System settings for Autoset
function are shown in the following table:
Table 6-22
Functions Settings
Acquire Mode
Normal Sample
Display Type
YT
SEC/DIV
Adjust based on signal frequency
VOLT/DIV Adjust based on signal amplitude
Trigger Type Edge
Trigger Level central point of signal
Trigger
Coupling
DC
Trigger Slope
Rise
Trigger Mode Auto
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