Test instrument delivers pulse and noise generation Product News 1/30/2008 Post a comment Agilent Technologies claims to introduce the industry's first pulse function arbitrary noise generator, which is said to provide superior signal quality combined with versatile waveforms for general-purpose bench tests or advanced serial data stress tests.
Measuring HD performance with Tektronix' Picture Quality Analyser and other tools Design How-To 1/25/2008 Post a comment While the quality of analog and full-bandwidth digital video can be characterised indirectly by measuring the distortions of static test signals, compressed television systems pose a far more difficult challenge. Picture quality in a compressed system can change dynamically based on a combination of data rate, picture complexity, and the encoding algorithm employed.
Optical analyzers extend reach Design How-To 1/21/2008 Post a comment No radio engineer would think of doing without a spectrum analyzer, but developers working in the electromagnetic spectrum's optical range have had little choice.
Measuring video quality: Can objective metrics match human eyes? Design How-To 1/4/2008 Post a comment Can objective metrics replace the "gifted" human eye when evaluating video quality? In short -- no -- but they have an important purpose. Subjective video analysis is costly, time consuming, and difficult to repeat. Objective metrics act as important evidence, while subjective analysis provides the confirmation.