Multichannel dynamic signal analyzers (DSAs) are required to
acquire data. Many of today’s DSAs have 24-bit A/D (analog to
digital) converters with built-in signal conditioning (ICP® or IEPE
inputs) and built-in source channels (signal generator) to drive the
shaker system and provide mechanical excitation to the structure.
Advanced modal software incorporates robust geometry-driven
data acquisition wizards, analysis methods and algorithms. What
was extremely difficult or almost an art many years ago, has been
greatly simplified for easier and faster modal testing.