015-0075-00: Difference between revisions
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|class=Audio/Video | |class=Audio/Video | ||
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|summary= | |summary=Video Staircase Differentiator | ||
|image= | |image=Tek 015-0075-00 1.jpg | ||
|caption= | |caption=Tek 015-0075-00 | ||
|introduced=(?) | |introduced=(?) | ||
|discontinued=(?) | |discontinued=(?) | ||
Revision as of 08:30, 21 August 2021
The Tektronix 015-0075-00 Video Staircase Differentiator is intended for measuring luminance nonlinearity in analog video systems.
The typical setup for this measurement is as follows: A video signal generator produces a pattern with a few vertical bars with uniformly increasing luminance. The signal is applied to the device or system under test. The output is differentiated by the 015-0075-00 and viewed on an oscilloscope, triggering on the row sync signal.
If the system under test has linear luminance response, the luminance waveform at its output will be a uniform staircase, and differentiating it will produce a series of pulses of equal amplitude. Deviations from linearity, e.g., dynamic compression, will be seen as pulses of decreasing amplitude.
Key Specifications
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