Service Model 8901B
8-6.
SCHEMATIC SYMBOLOGY AND SCHEMATIC DIAGRAM NOTES
Table 8A-6 summarizes the symbology used in presenting many devices found in the instrument.
The logic symbols used in this manual
are
based
on
the Institute
of
Electrical and Electronic
Engineers (IEEE) in IEEE-STD 91-1984,
Graphic
Symbols
for Logic hnctions.
This publication may
be purchased
from:
Institute of Electrical and Electronic Engineers
345
East 47th Street
New York, NY 10017
able
8A-6.
Schematic Diagram Notes
(1
of
11)
Interconnect
information;
Circled letter
with adjacent
Test points: symbols number indicates
circuit-path
are numbered for easy
correlation to schematic continuation to
diagrams. procedures, another service
and component location Plug-in sheet
(3.
in
diagrams. Connection to information: this example).
circuit signifies number
Look
for same
Board Board Board measuring aid (metal indicates circled letter
Assembly Assembly Assembly Post. circuit pad. pin of socket on the indicated
service sheet.
Circuit
functional
designation
Socket
on A2
Solder point
numbered.
which schematic assemblies signify right corners
of
directly applies. connections to the assembly schematic diagrams
as the resistor which are separate are service
color code, from those made through
sheet
numbers.
First number Reference the integral plug part
identifies the designations
of
the assembly.
base color. within outlined
second number assemblies are
the wider stripe, abbreviated. Full
and the third designation includes
number the assembly number:
narrower stripe.
for example. Asterisk indicates factory
Example: A2
is
A2R1. Section
SI.
denotes white base. are complete Value shown
is
average or most
yellow
wide stripe. as shown. commonly selected value.
violet narrow stripe.
Rl
of assembly selected components.
(See
Designations
of
other components Value selected for best operation.
--@7J-
8A- 10
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