Philips 109B7 User Manual page 23

A, B (see figure ). Also known as misconvergence.
.
Points where convergence error is specified
CRT
Cathode-ray tube - the general term for all tubes in which one or more electron beams emitted by
a cathode are periodically scanned across a phosphor screen by means of deflection circuitry. A
special form of the cathode-ray tube is the TV and monitor picture tube.
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D
DDC (Display Data Channel)