Section
8-AA
501
DIAGRAMS AND CIRCUIT BOARD ILLUSTRATIONS
Symbols
Graphic symbols and class designation letters are
Y14.15, 1966 Drafting Practices.
based on
ANSI Standard Y32.2-1975.
Y14.2, 1973
Line Conventions and Lettering.
Y10.5, 1968 Letter Symbols for Quantities Used in
Logic symbology is based on ANSl Y32.14-1973 in
Electrical Science and Electrical
terms of positive logic. Logic symbols depict the logic
Engineering.
function performed and may differ from the manufac-
turer's data.
American National Standard Institute
1430 Broadway
New York, New York 10018
The
overline on a signal name indicates that the signal
performs its intended function when it is in the low state.
Component Values
Electrical components shown on the diagrams are in
the following units unless noted otherwise:
Abbreviations are based on ANSl Y1.l-1972.
Capacitors
=
Values one or greater are in picof,arads (pF).
Values less than one are in microfarads
Other
ANSI standards that are used in the preparation
(PF).
of diagrams by Tektronix, Inc. are: Resistors
=
Ohms
(n).
The information and special symbols below may appear in this manual.
Assembly Numbers and Grid Coordinates
Each assembly in the instrument is assigned an
.assembly number
(e.g., A20). The assembly number
appears on the circuit board outline on the diagram, in the
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 isarranged by assemblies
in numerical sequence; the components are listed by
component number *(see following illustration for
constructing a component number).
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 the components illustrated on the facing
diagram are listed in the lookup table. When more than
one schematic diagram is used to
illustratethecircuitry on
a circuit board, the circuit board
~llustration may only
appear opposite the first diagram on which it was il-
lustrated; the lookup table will list the diagram number of
other diagrams that the circuitry of the circuit board
appears on.
A
B
C
D
Funct~on Block T~tle
Internal
Screwdriver
Adlustrnent
(Dot lndlcates
swltch closure)
Etched
Clrcult Board
Outl~ned In Black
Refer to Waveform
Test Voltage
Board Name
PIO-Part of
clrcult board
Assembly Number
670-XXXX-XX R330
0-
#
Tektronix Part No
for
clrcult boards
SYNC
GENERATOR
@
Modifled Componenl (De-
picted
~n Grey, or Wlth Grey
Outllne)
-
See Parts Llst
Strap or Link
Plug to E.C. Board
l
ndicators
Coaxial connectors:
male
female
Plug Index; signifies pin No.
1
External Screwdriver Adj
Shielding
Selected value, see Parts
L~st
and Maintenance Section for
Selection Criteria
Decoupled or Filtered
Voltage
Refer to Diagram Number
Schematic Name
and Number
REV
DEC
1981
Scam
by
ARTEK
MEDL4
=>
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