Datasheet
Spectrum View (optional)
Intuitive spectrum analyzer controls like center frequency, span and resolution bandwidth (RBW), independent from time domain controls, provide easy setup for frequency domain
analysis. A spectrum view is available for each FlexChannel analog input, enabling multi-channel mixed domain analysis.
It is often easier to debug an issue by viewing one or more signals in the
frequency domain. Oscilloscopes have included math-based FFTs for
decades in an attempt to address this need. However, FFTs are notoriously
difficult to use for two primary reasons.
First, when performing frequency-domain analysis, you think about controls
like Center Frequency, Span, and Resolution Bandwidth (RBW), as you
would typically find on a spectrum analyzer. But then you use an FFT,
where you are stuck with traditional scope controls like sample rate, record
length and time/div and have to perform all the mental translations to try to
get the view you’re looking for in the frequency-domain.
Second, FFTs are driven by the same acquisition system that’s delivering
the analog time-domain view. When you optimize acquisition settings for
the analog view, your frequency-domain view isn’t what you want. When
you get the frequency-domain view you want, your analog view is not what
you want. With math-based FFTs, it is virtually impossible to get optimized
views in both domains.
Spectrum View changes all of this. Tektronix’ patented technology provides
both a decimator for the time-domain and a digital downconverter for the
frequency-domain behind each FlexChannel. The two different acquisition
paths let you simultaneously observe both time- and frequency-domain
views of the input signal with independent acquisition settings for each
domain. Other manufacturers offer various ‘spectral analysis’ packages that
claim ease-of-use, but they all exhibit the limitations described above. Only
Spectrum View provides both exceptional ease-of-use and the ability to
achieve optimal views in both domains simultaneously.
Datasheet
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