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SECTION
V
SCHEMATICS, COMPONENT LOCATIONS, DIAGRAMS
5-1 INTRODUCTION
5-2 This section contains Component Location
diagrams and Schematics for all the assemblies in
the 3720A. For convenience, and to aid in usage,
information
on
each assembly
is
contained within
assembly packages, listed in assembly designator
order.
5-3
DRAWING SYMBOLS
5-4 Figures 5-1 and 5-4 show drawing symbols
and standards used throughout this section whilst
Figure 5-2 indicates the internal layout
of
the
digital integrated circuits used in the 3720A.
5-5
ASSEMBLY PACKAGES
5-6 Each. assembly package comprises
a
Com-
ponent Location (and Component Identification
Grid where applicable), and Schematic.
5-7 Locating Assembly Packages
Section
V
5-8 Each assembly package
.is
marked
at
the
bottom right hand corner of the right hand pull-
out page with
a
large identification number corres-
pohding to that assembly designator,
eg,
assembly
A1
1
is marked A-ll. Since all interconnections
between assemblies are labelled by assembly desig-
nator and pin number, this should aid when
referring to an assembly.
5-9 THEORY OF OPERATION
5-10 Functional Diagram
5-1
1
Figure 5-3 shows
a
simplified Functional
Diagram of the 3720A indicating the signal flow
through the instrument, the main processing steps
and the function of the front panel controls.
5-
1
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