Among the more well known brands of spectrum analyzers include Agilent, Standford Research, Avcom, BK Precision, Advantest, California Instruments, IFR, Instek, Marconi, Noisecom, Protek, Aeroflex, Rohde & Schwarz, Wayne Kerr, Telecom, W & G Instruments, Dranetz, Hameg, Wavetek and Tektronix. But even if these are great brands and their manufacturers try to come up with the highest quality spectrum analyzer possible, eventually they will suffer from minor glitches to major problems.
Generally, a spectrum analyzer is a device that measures and analyzes signals throughout the electromagnetic spectrum. The analyzer divides into parts signal and splits them into an amplitude component and a frequency component. You can find a variety of spectrum analyzers in the market. You have the subaudio, audio, and radio-frequency analyzers. You can also find spectrum analyzers that are intended to measure microwave and optical signals.
Aside from the kind of signals it measures, a spectrum analyzer can also be divided into analog, digital or hybrid. Digital spectrum analyzers usually handle more complex analysis and are used mainly with Fast Fourier Transform or FFT. Digital analyzers are able to transform the electrical or optical signals into components that are much smaller and a lot simpler. The differences of each model can be traced on the bandwidth range, sweep rates, frequency, and resolution.
Even before you buy a spectrum analyzer it is truly important that you conduct a thorough research on the various models. Since these devices do not come cheap, it would be best to determine which one is right for your application. It is best to read and study the machine's features, images and specs and if possible conduct some trial tests with the spectrum analyzer to see if it is running and to see if it will be able to handle all your needs.
Meanwhile, when you start to notice that the measurements of your spectrum analyzer is way off that what it should be, you better bring your unit fin for recalibrations. You need to look for companies that perform calibrating, repairing and refurbishing of spectrum analyzers. There are several of them on the internet. And to ensure that you get the best service you should only rely on the services of experts. There are a couple of companies that comply with strict ISO 9001:2000 and ISO 17025 registration levels making them more than adept in performing repair works on your spectrum analyzers. When looking for such companies it is also best to study their turnaround policies and other services like 24-hour shipping of finished units.
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