Section
9-PS
50
10
Symbols
Graphic symbols and class designation letters are
based on ANSI Standard Y32.2-1975.
Logic symbology is based on ANSl Y32.14-1973 in
terms of positive logic. Logic symbols depict the logic
function performed and may differ from the manufac-
turer's data.
The
overline on a signal name indicates that the signal
performs its intended function when it is in the low state.
Abbreviations are based on ANSl Y1.l-1972.
Other ANSl standards that are used in the preparation
of diagrams by Tektronix, Inc. are:
1
Drafting Practices.
$:
so
Line Conventions and Lettering.
42
FPO
Letter Symbols for Quantities Used in
02
Electrical Science and Electrical
$;
Engineering.
i=Z
i
La
American National Standard Institute
F=,Z
1430 Broadway
'i'S
New York, New York 10018
3"
Component Values
2:
z
Electrical components shown on the diagrams are in
"
the following units unless noted otherwise:
Capacitors
=
Values one or greater are in picof.arads
(
pF).
Values less than one are in microfarads
(m.
Resistors
=
Ohms
(f2).
The information and special symbols below may appear in this manual..
Assembly Numbers and Grid Coordinates
The schematic diagram and circuit board component
Each assembly in the instrument is assigned an location illustration have grids. A lookup table with the
assembly number (e.g., A20). The assembly number
grid coordinates is provided for ease of locating the
appears on the circuit board outline on the diagram, in the
component. Only the components illustrated on the facing
title for the circuit board component location illustration,
diagram are listed in the lookup table. When more than
and in the lookup table for the schematic diagram and
one schematic diagram is used to illustrate the circuitry on
corresponding component locator illustration. The a circuit board, the circuit board illustration may only
Replaceable Electrical Parts list is arranged by assemblies appear opposite the first diagram on which it was
ii-
in numerical sequence; the components are listed by lustrated; the lookup table will list the diagram number of
component number *(see following illustration for other diagrams that the circuitry of the circuit board
constructing a component number).
appears on.
Funct~on Block T~tle
-
--
Cam Swttch
Closure Chart
Uched Circuit Board
Outlined in Black
1
Refer to Waveform
AtwmMy Number
Tektron~x Part NO
/
*camafm~*awu
for
clrcult boards
"P"i'"y".
-7-
-
-----.I
Ilr-*.)Lwk.m
Modified Component-See
Parts
List
(Depicted in grey.
or with grey outline)
Strap or Link
Plug
to
E.C.
Board
Indicators
Coaxial
connectors:
male
female
Plug Index; signifies pin No.
1
External Screwdriver Adj.
Shieiding
Selected value, see Parts List
and Maintenance Section for
Selection Criteria
Decoupled or Filtered
voltage
Refer to Diagram Number
Scl=mnatic Name
and Number
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