Title :
Methods of Verifying Adherence to the NTSC Color Signal Specifications
Author :
Luther, Arch C., Jr.
Author_Institution :
RCA, Victor Div., Camden, N.J.
Abstract :
A color-bar test signal is described for verification of the performance of an NTSC color television system. By measurement of the amplitudes and relative phases of a group of bar signals corresponding to saturated primary colors and their complements, it is shown that the basic composition of the multiplexed color signal may be verified. The use of a very simple demodulator for accurate measurement of phase at the 3.58-megacycle subcarrier frequency is also described.
Keywords :
Demodulation; Frequency measurement; Frequency synchronization; Instruments; Oscilloscopes; Phase measurement; Signal generators; System testing; TV broadcasting; Voltage;
Journal_Title :
Proceedings of the IRE
DOI :
10.1109/JRPROC.1954.274632
