Table of Contents
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Section 1
GENERAL INFORMATION
1.1
MONITOR DESCRIPTION
The TV monitor is a solid-state unit for use in industrial and commercial
installations where reliability and high quality video reproduction are
desired.
The monitor features printed circuit board construction for reliability
and uniformity. All circuits of the TV monitor are transistorized. The
synchronization circuits have been custom designed to accept vertical and horizontal
drive signals thus enabling the interfacing of this monitor with industrial or
simple sync sources. This feature simplifies the user's sync processing and
mixing and allows the unit to operate without requiring composite sync. The
electronic packaging has been miniaturized for compatibility with small volume
requirements.
Section 2
THEORY OF OPERATION
2.1
VIDEO AMPLIFIER
The video amplifier consists of QlOl and its associated circuitry.
The incoming video signal is applied to the monitor through the contrast control
through R109 to the base of transistor QlOl.
Transistor QlOl and its components comprise the video output driver with a
gain of about 17. Q104, operating as a class Bamplifier, remains cutoff until
a DC-coupled, positive-going signal arrives at its base and turns on the transistor.
A-1
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