Why Isn't the FFT Results Displayed on the DL1540 When Performing an FFT Analysis?

If the FFT does not appear, check to assure that the horizontal position of the waveform is set exactly to Zero. If the horizontal position is set to a non-zero value, the FFT will not be performed.

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Mixed Signal Oscilloscopes

A mixed signal oscilloscope is an instrument enabling the simultaneous, time correlated observations and analysis of analog with digital (logic) signals, to establish causal relationships between the various areas of a device's electronics. They are purpose-built tools for troubleshooting electrical anomalies, measuring parametric values, and monitoring cause and effect relationships between signals.


Oscilloscopes are a common type of test instrument used to capture, analyze, and troubleshoot electrical or real world physical signals. Oscilloscopes observe the change of electrical signals over time, continuously graphed on a display as voltage or amplitude vs. time.