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9-11705A
Diagrams/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 manufacturer’s data.
Overline, parenthesis, or leading slash indicate a low asserting state.
Example: ID CONTROL, (ID CONTROL), or /ID CONTROL.
Abbreviations are based on ANSI Y1.1--1972.
Other ANSI standards that are used in 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 and Electrical Engineering.
American National Standard Institute
1430 Broadway, New York, New York 10018
Component Values
Electrical components shown on the diagrams are in the following units unless noted
otherwise:
Capacitors: Values one or greater are in picofarads (pF).
Values less than one are in microfarads (F).
Resistors = Ohms (Ω).
The foll owing i nformation and special symbols may appear in this manual.
Assembly Numbers
Each assembly in the instrument is assigned an assembly number (e.g., A20). The
assembly number appears on the diagram (in circuit board outline), circuit board illustra-
tion title, and lookup table for the schematic diagram.
The Replaceable Electrical Parts List is arranged by assembly number in numerical
sequence; the components are listed by component number. Example:
Chassis--mounted components
have no Assembly No. prefix.
See end of Replaceable Electrical
Parts List
Assembly
Number
Component Number
A23 A2 R1234
Subassembly
Number (if used)
Schematic Circuit
Number
Grid Coordinates
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 illustrate the circuitry on a circuit
board, the circuit board illustration will only appear opposite the first diagram; the lookup
table will list the diagram number of other diagrams that the other circuitry appears on.
WIRESTRAP
MODULE
PLUG
P1
NEGATIVE
PORTS
ICTYPE
CHANGED
PART
+12V
DECOUPLEDOR
FILTEREDVOLTAGE
R500
20K
+12V3
REAR
PANEL
INPUT
BNC
J1
(FEMALE)
PAD
FRONTPANEL
NOMENCLATURE
C1
10UF
2
3
6
7
4
U1
741
---12V
R5
1.0
NC
ROTATE
H
HEAT SINK
2
REFERTO
WAVEFORM
123
J1
R4
20K
Q8
W4
0OHM
+11.8V +15V
---11.8V
TP1
/VIDEO
(VIDEO)
R55
100.0
CLOCKWISE
AJUSTMENT
1
2
J3
12
W751
A3
ANALOG
BOARD
SCHEMATIC&
BOARDREF
PART NAME,
2
R100
R85
SEL
SEE PARTS LIST
FORSELECTION
CRITERIA
SQUAREPIN
CONNECTOR
PARTOF A1MAINBOARD
R56
100.0
Q6
---15V
SEEPARTSLISTFOR
EARLIERVALUESAND
SERIALNUMBERRANGES.
C27
0.1UF
SCREWDRIVER
ADJUSTMENT
CIRCUITBOARD
OUTLINE
& SNUBBER
BASE DRIVE
TITLE
FUNCTIONBLOCK
INSTRUMENT NAME
SCHEMATICNAME& NUMBER ASSEMBLYNUMBER
VERTICAL INPUT
1
A1
COMPONENTLOCATORGRID