Narrow-bandwidth Television Association
EPROM based NBTV Signal Generator
Printed Circuit Board which simplifies building an electronic NBTV video signal
generator based on pictures stored in an EPROM. Up to 32 different pictures can
be stored in a single 27C512. The club can help you to program an EPROM with a
set of attractive pictures.
The assembled Printed Circuit Board. All components are standard components and
easily to obtain. The EPROM is placed in a socket.
Electronic circuit diagram. The masterclock is crystal controlled. This circuit
is designed for the 32-line clubstandard. With small changes it can also be used
for the 30-line Baird standard. EPROM's of four sizes can be inserted.
Video signal generator in its own cabinet. The EPROM socket is extended to a
ZIF-socket on the front to enable easy exchange of EPROM's. Picture selection is
done on the thumbwheel switches.
description of the assembly in pdf-format