015-0075-00: Difference between revisions

From TekWiki
Jump to navigation Jump to search
No edit summary
No edit summary
Line 1: Line 1:
The Tektronix "015-0075-00 Video Staircase Differentiator" is intended  
The Tektronix 015-0075-00 Video Staircase Differentiator is intended  
for measuring luminance nonlinearity in analog video systems.
for measuring luminance nonlinearity in analog video systems.
The typical setup for this measurement is as follows:  
The typical setup for this measurement is as follows:  

Revision as of 11:04, 9 September 2017

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.