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DIAGRAMS AND CIRCUIT BOARD ILLUSTRATIONS
Symbols
Graphic symbols and class designation letters are
based on ANSI Standard Y32.2-1975.
Logic symbology is based
on
ANSI
Y32.14-1973
in
terms of positive logic. Logic symbols depict the logic
function performed and may differ from the rnanufac-
turer's data.
The overline on a signal name indicates that the signal
performs its intended function when it
is i n the low state.
Abbreviations are based on ANSl
Y1.1-1972.
Other ANSl standards that are used i n the preparation
of
diagrams by Tektronix, Inc. are:
Y14.15, 1966
Drafting Practices.
Y14.2, 1973
Line Conventions and Lettering.
Y10.5,1968
Letter Symbols for Quantities Used in
Electrical
Science
end
Elect rieal
Engineering.
American National Standard Institute
1430
Broadway
Mew York, New York 10018
Corn ponent Values
Electrical components shown on the diagrams are i n
the following units unless noted otherwise:
Capacitors = Values one or greater are in picofarads (pF).
Values less than one are i n microfarads
IPF).
Resistors
=
Ohms (R).
The lollowlng special symbols
may appear on
the
dlagrams:
Functlon Block Tftle
Internal
Screwdriver
Adjustment
Cam Switch
Cbsure
Chart
(C-m lndlcates
switch closure)
Etchad Circuit Board
Outlined in Black
Refer to Wavewrm
Function Block
Outline
Test voltaae
Heat
Sink
Board
Name
PIO-Pan
O f
circuit board
Assembly Number
Teklmnix Part No.
for circuit boards
Assembly Numbers and
Grid Coordinates
Each assembly i n the instrument is assigned an
assembly number (e.g., A20). The assembly number
appears on the circuit board outline
un
thediagrarn, inthe
title for
the
circuit 'board component location illustration,
and in the lookup table for the schematic diagram and
corresponding
component locator illustration.
The
Replaceable Electrical Parts list is arranged by assemblies
i n numerical sequence; the components are listed by
component number (see following
illustration for
constructing
a
component number).
COMPONENT NUMBER EXAMPLE
I
C h m l s - m w M tornrmnems have no k m b l !
Humw
pfeflx-act
end d kplatesble h l r i c a l
Par!>
brl
The schematic diagram and circuit board component
location illustration have grids. A lookup table with the
grid coordinates is provided for ease of locating the
component. Only thecomponentsillustrated
on
thefaeing
diagram are listed in the lookup table.
When
more than
one schematic diagram is used to illustrate thecircuitry on
a circuit board, the circuit board illustration may only
appear opposite the first diagram
on
which it
was
il-
lustrated; the tookup table will list the diagram number of
other diagrams that the circuitry of the circuit board
appears on.
R 3 3 0
O h -
H
-.--
--
1 '
S Y N C
G E N E R A T O R
4
Modifid Component-See
Parts List (Depicted in grey.
or with grey outline)
Plvg
to
E.C. Board
Coaxial connectore:
male
female
Plug Index: algnlfiss
uln No.
1
Exlernal Screwdriver
Adiustmenl
Shiiding
Selected
value, sea Parts
LiM
DeeouplOd
or
Mltered
VO tage
Refer to
Dlsgrum
Number
- .
" L
Schematic Name
- - L
- -
and Number
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