
Spectrum Analyser
The common way to examine electrical signals is in the time domain,
using an oscilloscope. The time domain is used to determine amplitude,
time and phase information, which is necessary to describe the behaviour
of an electrical system.
When the time domain does not give the information you want from a
signal, you can measure the frequency domain. For that purpose a spectrum
analyzer is available. This instrument measures the frequency spectrum of
a signal.
Key features of the spectrum analyzer are:
 determine a spectrum of up to 16K long records
 simultaneous use with the oscilloscope: you can see the signal both
in the time domain and the frequency domain
 intuitive adjustment of the horizontal and vertical offsets and
gains using advanced graphical controls
 five different window functions to reduce discontinuity errors in
the Fast Fourier Transform
 high precision Discrete Fourier Transform to eliminate discontinuity
errors
 linear and logarithmic vertical axes
 frequency axis linear, logarithmic, in octaves and in thirds of
octaves
 interpolation to improve graph
 averaging of measurements to reduce the influence of noise
 measuring maximum values
 Total Harmonic Distortion calculation up to 100 harmonics
 Spectrum analyzer controlled frequency sweep on instruments with
function generator
 extended cursor measurements
 all settings accessible through popup menus
 storing and recalling reference signals
 easy to use speedbutton toolbar for easy access of all functions
 comment tags to mark specific events in the signal
 colour hardcopy supported
 explanatory comments with all controls
