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Difference in the circuits
Exclusive circuit for conventional oscillograph
General circuit
Video signal
To trigger circuit
e
e
^
Simple synchronizing
circuit
To trigger circuit
-e
E>
Exclusive circuit for this
instrument
(Principle drawing)
TV exclusive synchronizing
separator circuit
To trigger
circuit
Hard to synchronize, because
video signal is applied directly as
trigger signal.
Synchronization is more easily
effected
than in
the
circuit
shown
at left, because the
signal is integrated to remove
high
frequency
components.
Stable synchronization is ob
tained
since SYNC pulse is
picked up, amplified, and then
integrated to remove high fre
quency components.
27
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