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on the monochrome camera, and light and colour.
Note that this page describes the UK colour system (PAL).
Light enters via the lens on the left and is split into three paths by mirrors and semi-transparent mirrors.
The light in
each path passes through a colour filter.
images are focussed on the faces of the three colour tubes which scan the
Some of the red,
green and blue signals from the camera tubes are added in the luminance
The colour signals are known as Er, Eg, and Eb.
The red and blue
signals are converted into two new signals called the red and blue colour
The luminance, chrominance and sync signals are combined and are then used to amplitude modulate a carrier in the UHF band.
sound signal frequency modulates a second carrier, which is 6 MHz apart
from the vision carrier.