Section 7 —475
Diagrams—475
DIAGRAMS AND CIRCUIT BOARD ILLUSTRATIONS
Symbols and Reference Designators
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
(fx
F).
Resistors =
Ohms (£2)
Symbols used on the diagrams are based on USA Standard Y32.2-1967.
Logic symbology is based on MIL-STD-806B in terms of positive logic. Logic symbols depict the logic function performed
and may differ from the manufacturer's data.
The following special symbols are used on the diagrams:
External Screwdriver adjustment.
External control or connector.
— ^
Clockwise control rotation in direction of arrow.
Refer to diagram number indicated in diamond.
Refer to waveform number indicated in hexagon.
A 2 C H 2
A T T E N C IR C U IT
BOARD ASSEM BLY
A1 CH 1
A T T E N C IR C U IT
BOARD ASSEMBLY
A 3 V E R T
PREAMP C IR C U IT
BO ARD ASSEM BLY
♦
Connection soldered to circuit board.
“ M
M
-----p :
Connection made to circuit board with interconnecting pin.
fVG -circuit
temrd
Blue tint encloses components located on circuit board.
The following prefix letters are used as reference designators to identify components or assemblies on the diagrams.
A
Assembly, separable or repairable (circuit board, etc.)
A T
Attenuator, fixed or variable
B
Motor
BT
Battery
C
Capacitor, fixed or variable
CR
Diode, signal or rectifier
DL
Delay line
DS
Indicating device (lamp)
F
Fuse
FL
Filter
H
Heat dissipating device (heat sink, heat radiator, etc.)
HR
Heater
J
Connector, stationary portion
K
Relay
L
Inductor, fixed or variable
LR
Inductor/resistor combination
M
Meter
Q
Transistor or silicon-controlled rectifier
P
Connector, movable portion
R
Resistor, fixed or variable
RT Thermistor
S
Switch
T
Transformer
TP
Test point
U
Assembly, inseparable or non-repairable (integrated
circuit, etc.)
V
Electron tube
VR
Voltage regulator (zener diode, etc.)
Y
Crystal
A7 T IM IN G
C IR C U IT BO ARD
ASSEMBLY
A8
T R IG G E R GEN
& Z -A X IS LOGIC
C IR C U IT BOARD
ASSEMBLY
V E R T IC A L M O DE
SWITCH C IR C U IT
BO ARD ASSEM BLY
A 6
FAN M O TO R
C IR C U IT BO ARD
ASSEMBLY
A 5 V E R T IC A L
O UTPUT A M P L IF IE R
C IR C U IT BOARD
ASSEMBLY
Diagrams—475
Dual
Large
Flat Pack
T ransistors
Small
Plastic Case
T ransistors
Plastic Case
FETS
Dual Metal
Case FET
Index
Index
Integrated Circuits
®
7-1
®
Fig. 7-1. Location of circuit boards in the 475 Oscilloscope.
®
Fig. 7-2. Lead configurations fo r semiconductors used in this instrument.
S
E
C
T
IO
N
7
D
IA
G
R
A
M
S
Summary of Contents for 475
Page 6: ...475 475 Oscilloscope ...
Page 20: ......
Page 46: ......
Page 151: ...A B C D E F G Fig 7 4 P 0 A4 Vertical Mode Switch circuit board ...
Page 152: ...n m m m 1 t siumm c ii im ...
Page 154: ...Diagrams 475 A B C D E F G ...
Page 155: ...GRID LOCATOR Fig 7 8 P O A3 Vertical Preamp circuit board ...
Page 157: ...Diagrams 475 ...
Page 158: ...GRID LOCATOR 2 3 4 5 6 7 8 9 1 10 11 1 12 Fig 7 10 P 0 A3 Vertical Preamp circuit board ...
Page 160: ...Diagrams 475 GRID LOCATOR Fig 7 11 A5 Vertical Output circuit board ...
Page 163: ...Diagrams 475 GRID LOCATOR Fig 7 12 P O A8 Trigger Generator And Sweep Logic circuit board ...
Page 167: ... 415 OSCILLOSCOPE B T R IG G E R G E N E R A T O R g B TR IG G E R GEN ER A TO R ...
Page 168: ...Diagrams 475 GRID LOCATOR ...
Page 172: ...SWEEP G E N ER A TO R S ...
Page 175: ...TIM IN G HORIZONTAL DISPLAY SWITCHING ...
Page 177: ...A 011 HORIZONTAL AMPLIFIER 8 l j k J Ll J Ol Z o N C O X U 1 C L O o v O o _J V v P O in r ...
Page 179: ... 476 OSCILLOSCOPE ...
Page 180: ...POWER SUPPLY ...
Page 182: ...CRT CIRCUIT ...
Page 185: ...C A L IB R A T O R A N D F A N C I R C U I T 4 C A LIB R A TO R FAN MOTOR C IR C U IT ...
Page 189: ......
Page 190: ...4 T 475 OSCILLOSCOPE FIG 1 FRO NT PANEL ...
Page 191: ...475 OSCILLOSCOPE FIG 2 MAIN FRAME ...
Page 199: ......
Page 200: ...FIG 3 RIGHT SIDE l 475 OSCILLOSCOPE ...
Page 201: ...V S X O t l B O T T OVJ 8 8 ...
Page 209: ......
Page 210: ...5 ...
Page 211: ...4 4 75 O S C ILLO S C O P E FIG 5 CAB IN ET ...
Page 215: ......
Page 237: ......
Page 241: ... 1 I R I II9A po S IT I o n f i n e I R l 130 PAGE 4 OF 5 R 1234 Ml 9 91 9 473 ...