BK Precision Spectrum Analyzers

BK Precision Spectrum Analyzers
A Spectrum Analyzer measures the amplitude versus the frequency of an input signal. On a spectrum analyzer display, the amplitude is plotted on the y-axis and the frequency on the x-axis. From spectrum analysis dominant frequency, power, distortion, harmonics, and bandwidth of an input signal can be measured.
Spectrum analyzers operate in four different manners:

• Swept-Tuned
• FFT (fast Fourier Transform)
• Hybrid superheterodyne-FFT
• Realtime FFT

Each of these has unique advantages or disadvantages for different applications. Spectrum analyzers also come in three different forms depending on area of use: benchtop, portable, and handheld. Despite the similarities in appearance, a spectrum analyzer is different from an oscilloscope: an oscilloscope plots voltage (amplitude) on the y-axis and time on the x-axis. Some units can function as both oscilloscopes and spectrum analyzers.