Spectrum analyzers are fundamental signal analysis tools ideal as rental equipment due to their high prices and varied applications. A spectrum analyzer measures the amplitude and frequency of a signal without phase considerations. Signal measurement in the frequency domain is performed with one of two methods. Fast Fourier Transform (FFT), the first, uses mathematic formulas to acquire the frequency spectrum of a signal. The signal is sampled in the time domain then converted to a digital format. It is then transformed using Fourier analysis to display the signal in a frequency domain. This is spectrum analysis using digital technology. Swept-Tuned Analysis with a superheterodyne receiver is the second method; a sweep generator is set on the device to control the local oscillator (LO). This and the input signal are mixed in order to look at only the set frequency range as determined by the sweep generator. An amplifier and filter is then used on the signal that is mixed in order to obtain the spectrum. This is spectrum analysis using analog technology.
ATEC offers affordable spectrum analyzer rental rates for products from leading manufacturers like
Tektronix,
Keysight and
Rohde & Schwarz.