Section IO-BO4XXXX Addendum
DIAGRAMS AND CIRCUIT BOARD ILLUSTRATIONS
Symbols
Y14.15, 1966 Drafting Practices.
Graphic symbols and class designation letters are
Y14.2, 1973 Line Conventions and Lettering.
based on ANSI Standard Y32.2-1975.
Y10.5, 1968 Letter Symbols for Quantities Used in
Logic symbology is based on ANSI 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-
American National Standard Institute
turer's data.
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 ANSI Y1.l-1972.
Capacitors = Values one or greater are in picofarads (pF).
Values less than one are in microfarads
Other ANSI standards that are used in the preparation (m.
of diagrams by Tektronix, Inc. are: Resistors = Ohms (a).
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 thediagram, in the component. Onlythecomponents illustrated on thefacing
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 il-
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.
A C D
Modified Component
Function Block Title - (Depicted in Grey. or With
GrevOutlineJ - SeePamlist.
Strap or Link
Cam Switch
Plug to E.C. Board
Etched Circuit Board
Outlined in Black
Indicators
Refer to Waveform
Coaxial connectors:
Function Block mala
female
Plug Index; signifies pin No. 1
External Screwdriver Adi.
Shielding
Selected value, see Parts List
and Maintenance Section for
Selection Criteria
Decoupled or Filtered
Voltage
Assembly Number
Refer to Diagram Number
Schematic Name
and Number
ills,, rnmdraC"* hrm U.m, *ckI
nh.-m .d d LC'U, "Old PI* b,, |
ACEC
