Spectrum Analyzer
From Wikipedia,
the free encyclopedia
A spectrum analyzer is a device used to examine the spectral composition
of some electrical, acoustic, or optical waveform.
Often, it measures the power spectrum.
There are analog and digital spectrum analyzers:
- An analog spectrum analyzer uses either a variable bandpass filter whose mid-frequency is automatically tuned (shifted, swept) through the range of frequencies of which the spectrum is to be measured or a superheterodyne receiver where the local oscillator is swept through a range of frequencies.
- A digital spectrum analyzer computes the Fast Fourier transform (FFT), a mathematical process that transforms a waveform into the components of its frequency spectrum.
Some spectrum analyzers (such as Tektronix's family of "real-time spectrum analyzers") use a hybrid technique where the incoming signal is first down-converted to a lower frequency using superheterodyne techniques and then analyzed using FFT techniques.
About TestEquity
TestEquity is a leading distributor of new test equipment from many of the world's finest manufacturers including Agilent, Tektronix, Rohde & Schwarz and others. New test equipment is in stock and ready to ship at a moment's notice.
TestEquity also sells the highest grade of used test equipment. This test equipment includes logic analyzers, spectrum analyzers, network analyzers, RF and microwave, telecommunications equipment, meters, power supplies, oscilloscopes, signal sources, and frequency counters. Technicians thoroughly repair, test and calibrate the equipment with NIST traceability. The equipment is calibrated to the original manufacturer's specifications as well as ISO/IEC 17025 and ANSI/NCSLZ 540-1 standards. Our lab is A2LA Accredited in accordance with ISO/IEC 17025:2005 General Requirements for the Competence of Testing and Calibration Laboratories. The equipment is cosmetically refurbished which may include painting and replacing any external components. The manuals and the complete list of accessories are included with the unit. TestEquity reconditioned equipment comes with a one-year warranty which is the best in the used equipment market. The end result is equipment that looks and functions like new at a fraction of the cost.
Most of TestEquity's inventory is also available for rent to solve customers' short-term equipment needs. Rentals can be for as little as one month, allowing customers to avoid long-term lease commitments. Rental rates are attractively low, resulting in payments that are a small fraction of the actual equipment price. We offer the most flexible rental programs including month to month rentals where a customer's rental payments may also be applied towards the purchase price of the equipment. On most models little or no minimum rental period is required before the customer may elect to buy the equipment that they are renting. This is the most flexible and economical rental policy offered in the test equipment rental industry. | 
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