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Section 9 -4 5 5 /A 2 /B 2
DIAGRAMS AND CIRCUIT BOARD ILLUSTRATIONS
Symbols and Reference Designators
Electrical components shown on the diagrams are in the follow ing units unless noted otherwise:
Capacitors =
Values one or greater are in picofarads (pF).
Values less than one are in microfarads (pF).
Resistors =
Ohms (£2).
Graphic symbols and class designation letters are based on ANSI Standard V32.2-1975.
Logic symbology is based on ANSI Y32.14-1973 in terms o f positive logic. Logic symbols depict the logic
function performed and may d iffe r from the manufacturer's data.
The overline on a signal name indicates that the signal performs its intended function when it goes to the low state.
Abbreviations are based on ANSI Y 1 .1-1972.
Other ANSI standards that are used in the preparation o f diagrams by T ektronix, Inc. are:
Y14.15, 1966
Drafting Practices.
Y14.2, 1973
Line Conventions and Lettering.
Y 1 0 .5 ,1968
Letter Symbols fo r Quantities Used in Electrical Science and
Electrical Engineering.
The follow ing prefix letters are used as reference designators to identify components or assemblies on the diagrams.
A
Assembly, separable or repairable
H
Heat dissipating device (heat sink,
S
Switch or contactor
(circuit board, etc)
heat radiator, etc)
T
T ransformer
AT
Attenuator, fixed or variable
HR
Heater
TC
Thermocouple
B
Motor
HY
Hybrid circuit
TP
Test point
BT
Battery
J
Connector, stationary portion
U
Assembly, inseparable or non-repairable
C
Capacitor, fixed or variable
K
Relay
(integrated circuit, etc.)
CB
Circuit breaker
L
Inductor, fixed or variable
V
Electron tube
CR
Diode, signal or rectifier
M
Meter
VR
Voltage regulator (zener diode, etc.)
DL
Delay line
P
Connector, movable portion
W
Wirestrap or cable
DS
Indicating device (lamp)
Q
Transistor or silicon-controlled
Y
Crystal
E
Spark Gap, Ferrite bead
rectifier
2
Phase shifter
F
Fuse
R
Resistor, fixed or variable
FL
Filter
RT
Thermistor
,— Plug to E.C. Board
The follow ing special symbols may appear on the diagrams:
S
Strap or Link
Cam Switch
Closure Chart
(Dot indicates
switch closure)
SEL Value Selected
at Factory
Test Voltage
Internal
Screwdriver
Adjustment
Assembly Number
Board Name
V E R T IC A L A M P L IF IE R ^ * * .
I Box I Identifies Panel
Controls, Connectors and
Indicators
___
Modified Component—See
In i s] <
Parts List (Depicted in grey,
5 0 k
or with grey outline)
Plug Index
Refer to Waveform
Refer to Diagram Number
Coaxial Connector
Shielding
Heat Sink
Decoupled or Filtered
Voltage
Etched Circuit Board
Outlined in Black
Schematic Name
and Number
REV. B NOV 1977
Содержание 455
Страница 1: ...Tektronix 455 A2 B2 PORTABLE OSCILLOSCOPE WITH OPTIONS I N S T R U C T I O N M A N U A L ...
Страница 9: ......
Страница 13: ...455 A2 B2 x 455 A2 B2 Portable Oscilloscope ...
Страница 60: ...Circuit Description 455 A2 B2 Fig 4 3 Attenuator and gain switching sequences 4 8 REV A OCT 1975 ...
Страница 61: ...Circuit Description 455 A2 B2 Fig 4 4 Channel switching gates REV A OCT 1975 4 9 ...
Страница 66: ...Fig 4 6 Sweep generator 1C Function block diagram Circuit Description 455 A2 B2 ...
Страница 80: ...Maintenance 455 A2 B2 BOTTOM FRAME Fig 5 7 VO LTS DIV switch disassembly 5 8 REV A OCT 1975 ...
Страница 90: ...Maintenance 455 A2 B2 Fig 5 13 Troubleshooting chart 5 18 REV A O CT 1975 ...
Страница 91: ...Maintenance 455 A2 B2 1907 1 A Fig 5 13 Troubleshooting chart cont REV A OCT 1975 5 19 ...
Страница 120: ...Instrument Options 455 A2 B2 o j a O Option 5 Page 12 REV B APR 1977 P A R T IA L A 1 0 T R I E R B O A R D ...
Страница 132: ...Instrument Options 455 A2 B2 Option 7 Page 8 REV E AUG 1979 D C TO AC I NVERTER ...
Страница 164: ...455 A2 B2 LARGE 5 INTEGRATED CIRCUITS Fig 9 1 Semiconductor lead identification REV C MAY 1978 ...
Страница 166: ...l 07 7 REV b NOV C M1 4 5 5 MAIN MODULE BLOCK DIAGRAM ...
Страница 167: ...4 5 5 A 2 B 2 AS VERTICAL MODULE IR07 R8 RE V B M O ...
Страница 168: ...I S 0 7 9 8 R E V B NOV IRT7 A2 VERTICAL MODULE BLOCK DIAGRAM ...
Страница 169: ...REV B NOV 1977 Fig 9 2 A1 Partial Interface board compo ...
Страница 170: ...455 A2 B2 Sea Parts List for serial number ranges tial Interface board component locations ...
Страница 173: ...v I m B 2 HORIZONTAL MODULE BLOCK DIAGRAM ...
Страница 174: ...455 A2 B2 REV B NOV 1977 Fig 9 3 A 1 Partial Interface board component locations ...
Страница 182: ...455 A2 B2 Fig 9 4 A20 Vertical board component locations SN B0110 ...
Страница 185: ...455 A2 S2 4 5 5 M A fN M O DULE ...
Страница 187: ...455 A2 B2 Fig 9 5 A20 Vertical board component location SN B010100 B REV C NOV 1977 ...
Страница 191: ...V O L T S 01 ...
Страница 192: ...V O LT S Q IV S H O W N IN 57 H V ...
Страница 198: ... U 1 X SlCjMAt TO P2 A4 h o p it MODULE SEE PARTS LIST FOR SEMICONDUCTOR TYPES f SWITCHING ...
Страница 207: ...A 1 4 B T I M I N G S W I T C H B O A R D A13 A TIM ING SWITCH BOARD 1 9 0 7 3 ...
Страница 209: ...4 5 5 A 2 B 2 B 2 h o r iz o n t a l m o d u l e R o i I 11 R E V C NOV IS77 ...
Страница 212: ...455 A2 B2 0 0 V 2 _______________ 20 mV 50C 1 n5 i d 5 30 m j _ 500 1 n J 1 0 3 V 0 V 3 0 V 1907 117 ...
Страница 213: ......
Страница 214: ......
Страница 216: ...A B T IM IN G S W IT C H INTERFACE C O N N E C T O R ...
Страница 223: ... ...
Страница 224: ...455 A 2 B 2 ...
Страница 225: ... 455 A2 B2 ...
Страница 226: ......
Страница 233: ......
Страница 234: ...455 A2 B2 ...