DataQuestionable

This is a Data Header variable.

Type = Boolean

When DataQuestionable is true, the data is questionable because of something in the measurement setup. For example, if the RBW Resolution Band Width (RBW or ResBW): specifies the minimum frequency bandwith that two separate frequency spectra can be resolved and viewed seperately. For FFT (digital) based VSA's the process is equivalent to passing a time-domain signal through a bank of bandpass filters, whose center frequencies correspond to the frequencies of the FFT bins. For a traditional swept-tuned (non-digital) spectrum analyzer, the resolution bandwidth is the bandwidth of the IF filter which determines the selectivity. is set to a value so large that alias products may affect the data, the data is marked as questionable.

For more information, see the DATA? section of the Trace Indicator Messages topic.