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O. 18 H. MAX.
Fig. 9. Revised specifications for field test of NTSC compatible color television.
NOTES
1. The radiated signal envelope shall correspond to the modulating signal of the above figure, as modified by the transmission characteristics of Specif. 6.
2. The burst frequency shall be the frequency specified for the chrominance subcarrier. The tolerance on the frequency shall be ±0.0003% with a maximum rate of change of frequency not to exceed -^ cycle/sec/sec.
3. The horizontal scanning frequency
shall be 2/455 times the burst frequency.
4. Burst follows each horizontal pulse, but is omitted following the equalizing pulses and during the broad vertical pulses.
5. Vertical blanking 0.07 to 0.08 v.
6. The dimensions specified for the burst determine the times of starting and stopping the burst, but not its phase.
7. Dimension P represents the peak-topeak excursion of the luminance signal, but does not include the chrominance signal.
of Specif. 1 0, above, refer to the gammacorrected signals.
14. The color subcarrier frequency is 3.579545 me ±0.0003% with a maximum rate of change not to exceed y1^ cycle/sec/sec.
15. The horizontal scanning frequency is -f^^ times the color subcarrier frequency. This corresponds nominally to 15,750 cycles/sec (the actual value is 15,734.264 ± 0.047 cycles/sec).
16. The bandwidth assigned to the monochrome signal EY ' is in accordance with the FCC standard for black-andwhite transmissions, as noted in Specif. 6 above.
17. The bandwidth assigned prior to modulation to the color-difference signals EQ' and E/ is given by Table I.
18. Ey', ER', E0', EB', EQ', and E,' are all matched to each other in time to within ±0.05 /xsec. This is a tentative
A. V. Loughren: Color Television
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