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[QUOTE=&quot;FOX TV, post: 40709, member: 4493&quot;]Spectrum analyzer calibrationSpectrum analyzers need to be calibrated to a certain standard, and the use of that standard assures that calibrated analyzers from different manufacturers are as accurate as the next one up to the allowed tolerance of the standard itself. Age and heat cycles can change the characteristics of electronic devices over time, and this factor makes calibration on a given time frame a must in order to ensure the continued accuracy of that device. In some instances, depending on its use, the FCC requires calibration, and certification of the calibration in order for it to be used in a &quot;Proof of Performance&quot; test of a TV, or other type of FCC regulated transmitter such as an FM transmitter. A &quot;Proof of Performance&quot; diagnosis of a TV transmitter is normally done on a somewhat regular basis in order to ensure compliance with FCC regulations, and to ensure that you are within FCC specs, and not causing interference with other broadcasters. This is much more important than it was with analog, since adjacent channels are sometimes used in the same market, and the devices used to do this testing must be calibrated and certified by the calibration service as complying with a given standard that relates to its intended use.[/QUOTE]

[QUOTE="FOX TV, post: 40709, member: 4493"][b]Spectrum analyzer calibration[/b] Spectrum analyzers need to be calibrated to a certain standard, and the use of that standard assures that calibrated analyzers from different manufacturers are as accurate as the next one up to the allowed tolerance of the standard itself. Age and heat cycles can change the characteristics of electronic devices over time, and this factor makes calibration on a given time frame a must in order to ensure the continued accuracy of that device. In some instances, depending on its use, the FCC requires calibration, and certification of the calibration in order for it to be used in a "Proof of Performance" test of a TV, or other type of FCC regulated transmitter such as an FM transmitter. A "Proof of Performance" diagnosis of a TV transmitter is normally done on a somewhat regular basis in order to ensure compliance with FCC regulations, and to ensure that you are within FCC specs, and not causing interference with other broadcasters. This is much more important than it was with analog, since adjacent channels are sometimes used in the same market, and the devices used to do this testing must be calibrated and certified by the calibration service as complying with a given standard that relates to its intended use.[/QUOTE]

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