Vectorscope

A video vectorscope displaying color bars. The diagonal direction of the colorburst vector is indicative of a PAL signal.
The graticule of an NTSC vectorscope.
A PAL vectorscope displaying color bars.

A vectorscope is a special type of oscilloscope used in both audio and video applications.[1] Whereas an oscilloscope or waveform monitor normally displays a plot of signal vs. time, a vectorscope displays an X-Y plot of two signals, which can reveal details about the relationship between these two signals. Vectorscopes are highly similar in operation to oscilloscopes operated in X-Y mode; however those used in video applications have specialized graticules, and accept standard television or video signals as input (demodulating and demultiplexing the two components to be analyzed internally).

  1. ^ Bairagi, Vinayak; Munot, Mousami V. (30 January 2019). Research Methodology: A Practical and Scientific Approach. CRC Press. p. 210. ISBN 978-1-351-01325-3.