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What is Professional Calibration? PDF Print E-mail
Written by Kevin Miller   
Tuesday, 08 January 2008
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What is Professional Calibration?
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Professional television calibration takes what we, at TweakTV, are suggesting as a starting point to the highest level of system performance and accuracy. It is essentially a fine tuning of your entire video system by a qualified trained technician with reference level test equipment. What we are providing with the User menu settings for digital cable and/or Satelllite via the HDMI inputs of HDTVs is just a basic start in what we refer to as “System Calibration”. A full professional system calibration includes setting up all the video sources including the cable box and/or satellite receiver, DVD player, and calibrating each input on the TV with a variety of sophisticated TV test equipment.
Professional calibration came into being as a service to consumers when the Imaging Science Foundation was formed, and the first training seminar was conducted in early 1994. It came out of the work done by Joe Kane, Kevin Miller, Stuart Kobak, and Joel Silver at “The Perfect Vision” magazine in the early 1990s. We were the first magazine to implement television calibration as part of both the software and hardware review procedure of the magazine after finding out that other journalists were making incorrect conclusions in both hardware and software reviews, as their sets were not calibrated properly.
Professional calibration consists of calibrating the television based on the system standards that the NTSC (National Television Systems Committee) was designed around. This full system procedure entails setting the TV up with test patterns that tell professional technicians where the optimum settings for Contrast, Brightness, Color, Tint, and Sharpness should be for a given TV, and the source being used. A more complex part of the process is the “Grayscale” or “White Balance” calibration, which requires calibrating the actual color of gray from just above black to peak white. This is the final step in accurate color reproduction from a television, which requires extremely sophisticated test equipment, and a highly trained technician to do the job properly. Keep in mind that Professional Calibration is the calibration of your entire system. The TweakTV information includes only the User menu settings for the digital (HDMI) cable or satellite input/source. Professional full system calibration entails user menu, as well as, service menu adjustments. The service menu is where the more advanced tweaks are performed. It also provides grayscale calibration, and other sophisticated procedures like Color Management calibration, a high level adjustment to the primary and secondary colors available in some HDTVs. Professional system calibration means all the inputs and their various sources are setup individually, and the source components like DVD players and cable boxes are also setup correctly for a given TV. Finally, full documentation of where all the picture settings are set in the TV’s User menu, and pre and post calibration analysis reports are given to every client.

Last Updated ( Saturday, 18 April 2009 )
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