User Manual

APPENDIX 20
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Appendix 3 Reference
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This is a spectral artifact that occurs as a result of aliasing of the high
frequency component of a signal with the A/D converter sampling rate.
Although visible during measurement, it does not exist in reality.
Because no anti-aliasing filter is present, fine square waves are
monitored through the high-frequency amplifier, so the corners of
square waves include high-frequency components.
The aliasing artifacts are removed beautifully. The spectral waveform in
the graph is the actual spectrum.
Because of the rapid decay characteristic of the anti-aliasing filter, the
square wave edges exhibit ringing.
When an anti-aliasing filter is not used.
When an anti-aliasing filter is used.