Operating instructions

Symbols and
Reference
Designators
Electrical
components shown on
the diagrams are in
the following units
unless noted otherwise
:
Symbols used
on the diagrams
are based on
ANSI Standard Y32 .2-1970 .
Logic
symbology is based on
ANSI Y32 .14-1973
in terms of positive
logic .
function
performed and may
differ from the
manufacturer's data .
The
following prefix letters
are used as
reference designators to
identify components or
assemblies on
the
DIAGRAMS
AND CIRCUIT
BOARD
ILLUSTRATIONS
Capacitors =
Resistors =
The following
special
symbols are
used on the
diagrams :
Values
one or greater
are in picofarads
(pF) .
Values
less than one are
in microfarads
(MF) .
Ohms
(SZ) .
VERTICAL
AMPLIFIER
Q
1174
Logic symbols
depict the logic
Section
8-71380
diagrams .
Cam
Switch Closure
Chart
Internal
Screwdriver Adjustment
Test
Voltage
Plug to
E .C . Board
Panel Adjustment
Plug Index
Modified
Component-See Parts Lis
Refer to Waveform
Refer to Diagram
Number
SEL Value Selected
at Factory
Coaxial Connector
Panel
Connector
Assembly Number
Board
Name
Etched Circuit
Board Outlined
in Black
Schematic Name
and Number
A Assembly, separable
or repairable
H Heat dissipating
device (heat
sink, FIT Thermistor
(circuit board,
etc .)
heat radiator,
etc
.)
S Switch
AT Attenuator,
fixed or variable
HR Heater
T Transformer
B Motor
HY Hybrid
circuit
TC
Thermocouple
BT Battery
J
Connector, stationary portion
TP Test
point
C Capacitor,
fixed or variable
K
Relay
U
Assembly, inseparable or
non-repairable
CB Circuit
breaker
L
Inductor, fixed or variable
(integrated circuit, etc .)
CR
Diode, signal or rectifier
LR
Inductor/resistor
combination
V Electron tube
M Meter
VR Voltage regulator
(zener diode, etc .)
DL
DS
Delay line
Indicating device (lamp)
P Connector,
movable portion
Y Crystal
E Spark Gap
Q Transistor or
silicon-controlled
Z Phase shifter
F
Fuse
rectifier
FL
Filter
R Resistor,
fixed or variable