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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
a b l e 8A-6. Schematic Diagram Notes (1 of
1 1 )
Interconnect
information;
Circled l e t t e r
with a d j a c e n t
T e s t points: s y m b o l s
number i n d i c a t e s
circuit-path
a r e n u m b e r e d for easy
c o r r e l a t i o n t o s c h e m a t i c
c o n t i n u a t i o n t o
diagrams. p r o c e d u r e s ,
another s e r v i c e
and c o m p o n e n t location
Plug-in
sheet (3. in
diagrams. C o n n e c t i o n t o
information:
this e x a m p l e ) .
c i r c u i t s i g n i f i e s
n u m b e r
Look
f o r s a m e
B o a r d
Board
Board
m e a s u r i n g a i d (metal
indicates
circled l e t t e r
Assembly
Assembly
Assembly
Post. c i r c u i t pad.
p i n of s o c k e t
on t h e i n d i c a t e d
s e r v i c e s h e e t .
Circuit
f u n c t i o n a l
d e s i g n a t i o n
S o c k e t
o n A 2
S o l d e r p o i n t
n u m b e r e d .
which s c h e m a t i c
a s s e m b l i e s s i g n i f y
right c o r n e r s
o f
directly applies.
c o n n e c t i o n s t o t h e assembly
s c h e m a t i c d i a g r a m s
a s t h e resistor
w h i c h a r e s e p a r a t e
a r e s e r v i c e
c o l o r c o d e ,
f r o m t h o s e m a d e t h r o u g h
s h e e t
n u m b e r s .
F i r s t n u m b e r
R e f e r e n c e
t h e integral p l u g part
i d e n t i f i e s t h e
d e s i g n a t i o n s
of t h e a s s e m b l y .
b a s e color.
within o u t l i n e d
s e c o n d n u m b e r
a s s e m b l i e s a r e
t h e wider stripe,
a b b r e v i a t e d . Full
and t h e third
designation includes
n u m b e r t h e
assembly number:
n a r r o w e r s t r i p e .
for example.
A s t e r i s k indicates factory
Example:
A 2 is A2R1.
S e c t i o n SI.
d e n o t e s white base.
are c o m p l e t e
V a l u e s h o w n is a v e r a g e or most
y e l l o w w i d e stripe.
a s shown.
c o m m o n l y s e l e c t e d v a l u e .
violet n a r r o w s t r i p e .
R l of assembly
s e l e c t e d c o m p o n e n t s .
(See
D e s i g n a t i o n s of
other c o m p o n e n t s
V a l u e s e l e c t e d for best operation.
- - @ 7 J -
8A- 10
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