Getting Started with Your 2700 Series Instrument

DSP Analysis Chapter 5: Quick Guides
DSP Analysis
In addition to the hardware-implemented Analog Analyzer, the 2700 series
provides a number of software-implemented analysis tools in the Digital Analyzer
panel. These tools analyze digital domain signals using digital signal
processing (DSP). The DSP Audio Analyzer, which offers similar capabilities
to the Analog Analyzer, is one example. Another is the FFT Spectrum Analyzer,
which we will look at next.
Analog signals must be converted from the analog domain to the digital domain
for DSP analysis. When performing digital analysis of analog signals, the
2700 series uses the input circuits of the Analog Analyzer for interface and
ranging, and then routes the analog signals to an analog-to-digital converter
(ADC) before applying them to the Digital Analyzer for DSP analysis.
The FFT Spectrum Analyzer
Open the Digital Analyzer panel by choosing Panels > Digital Analyzer or
by clicking the Digital Analyzer button.
Figure 27. Digital Analyzer analysis tool selection.
At the top of the Digital Analyzer panel is a drop-down list of the DSP analysis
tools available in the 2700 series.
Up to this point, we have been using the hardware-implemented Analog
Analyzer to make measurements. We will now take a look at the FFT Spectrum
Analyzer. This analysis tool displays audio signals in time (oscilloscopestyle)
and in frequency (spectrum analyzer-style). It operates in a different
fashion from the Analog Analyzer, as explained next.
Getting Started with Your 2700 Series Instrument 45