Service manual

STP 11-25R13-SM-TG
S - 36
S-28. Flat Field.
During the active portion of each field, this signal has a luminance level which is variable from 0 to
100 IRE increments, or the signal can be adjusted to bounce automatically between 10 and 90 IRE at a
repetition rate variable from about 1 to 10 seconds. See Figures S-36 and S-37.
Figure S-36. Flat Field Signal