Circuit Description - Wavetek 142 Instruction Manual

SECTION
3
CIRCUIT DESCRIPTION
3.1
SIMPLIFIED
BLOCK DIAGRAM ANALYSIS
Refer to Figure 3-1,
the Simplified
Block Diagram, and
Figure
3-2,
the Simplified
Timing Diagram,
when
reading
this
description.
Paragraph 3.2
and
its
sub-paragraphs pro-
vide further descriptions of the functions
of the basic
circuits
comprising this
instrument. This paragraph de-
scribes, briefly,
the
major
circuit
elements and
their
relationship to
one another.
As shown
in
Figure 3-1,
the
VCG
Summing
Amplifier
sums
the currents
from the
FREQ
DIAL,
VERNIER,
and
Figure 3-1
-
Simplified
Block Diagram
3-1