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Model 8901B
Replaceable
Parts
Table 6-1. Reference Designations
A
........
assembly
AT
......
attenuator; isolator;
B
...............
fan: motor
BT
.................
battery
C
................
capacitor
CP
................
coupler
CR
............
diode; diode
DC
.......
directional coupler
DL
...............
delay line
DS
............
annunciator:
termination
thyristor: varactor
signaling device
(audible or visual);
lamp; LED
REFERENCE DESIGNATIONS
E
............
miscellaneous
electrical part
F
....................
fuse
FL
...................
filter
H
................
hardware
HY
...............
circulator
J
........
electrical connector
(stationary portion):
jack
K
...................
relay
L
.............
coil; inductor
M
..................
meter
MP
..........
miscellaneous
mechanical part
P
.......
electrical connector
(movable portion);
triode thyristor; FET
Plug
Q
..........
transistor; SCR;
R
.................
resistor
RT
..............
thermistor
S
..................
switch
T
..............
transformer
TB
..........
terminal board
TC
. . . . . . . . . . .
thermocouple
TP
...............
test point
U
.........
integrated circuit;
microcircuit
V
.............
electron tube
VR
........
voltage regulator;
W
.......
cable; transmission
X
..................
socket
Y
........
crystal
unit
(piezo-
2
........
tuned cavity; tuned
breakdown diode
path; wire
electric or quartz)
circuit
Table 6-2. Abbreviations
(1
of 2)
A
..........
ampere
ac
. . . . . . . .
alternating current
ACCESS
.........
accessory
ADJ
............
adjustment
A/D
........
analog-to-digital
AF
.........
audio frequency
AFC
.............
automatic
AGC
.........
automatic gain
frequency control
control
control
AM
....
amplitude modulation
APC
.......
automatic phase
ASSY
............
assembly
AUX
..............
auxiliary
avg
...............
average
AWG
.........
American wire
BAL
. . . . . . . . . . . . . . .
balance
BCD
..........
binary coded
BD
. . . . . . . . . . . . . . . . .
board
BECU
. . . . . .
beryllium copper
BFO
. . . . . . . . .
beat frequency
BH
............
binder head
BKDN
..........
breakdown
BP
. . . . . . . . . . . . . .
bandpass
BPF
. . . . . . . . .
bandpass filter
BRS
. . . . . . . . . . .
brass
BWO
. . . . . . .
backware-wave
C A l
. . . . . . . . . . . . . .
calibrate
ccw
. . . . . . .
counter-clockwise
CER
. . . . . . . . . . . . . .
ceramic
CHAN
. . . . . . . . . . . . .
channel
cm
. . . . . . . . . . . . . .
centimeter
CMO
. . . . .
cabinet mount only
COAX
. . . . . . . . . . . . . .
coaxial
AMPL
.............
amplifier
control
gauge
decimal
oscillator
oscillator
ABBREVIATIONS
CP
..........
'cadmium plate
CRT
.......
cathode-ray tube
transistor logic
CW
........
continuous wave
c w
..............
clockwise
CTL
.........
complementary
dB
.................
decibel
dBm
. . . . . . . .
decibel referred
angle)
O F
. . . . . . . .
degree Fahrenheit
O K
...........
degree Kelvin
DEPC
. . . . .
deposited carbon
DET
..............
detector
diam
. . . . . . . . . . . . . .
diameter
DIA
. . . . . . .
diameter (used in
DlFF AMPL
. . . . . .
differential
parts list)
amplifier
double-throw
DSB
.......
double sideband
DTL
. . . . . . . .
diode transistor
DVM
. . . . . . .
digital voltmeter
ECL
........
emitter coupled
EMF
. . . . .
electromotive force
logic
logic
EDP
.........
electronic data
ELECT
..........
electrolyhc
ENCAP
........
encapsulated
EXT
...............
external
F
...................
farad
FET
....
field-effect transistor
FH
...............
flat head
FIL H
. . . . . . . . . .
fillister head
FM
....
frequency modulation
FP
. . . . . . . . . . . . .
front panel
processing
g
...................
gram
GE
.............
germanium
GHz
.............
gigahertz
........
hour
HEX
. . . . . . . . . . . . .
hexagonal
HD
. . . . . . . . . . . . . . . . . .
head
HDW
. . . . . . . . . . . . .
hardware
HF
..........
high frequency
HG
. . . . . . . . . . . . . . .
mercury
HI
...................
high
HP
.........
Hewlett-Packard
HPF
. . . . . . . . .
high pass filter
HR
. . . . . . . . . . .
hour (used in
HV
. . . . . . . . . . . .
high voltage
Hz
. . . . . . . . . . . . . . . . . .
Hertz
IC
. . . . . . . . .
integrated circuit
ID
. . . . . . . . . .
inside diameter
IF
. . . . . . . . . . . . .
intermediate
parts list)
in
. . . . . . . . . . . .
incandescent
INCL
.............
include(s)
INP
. . . . . . . . . . . . . . . . . .
input
INS
. . . . . . . . . . . . . .
insulation
INT
................
internal
kg
................
kilogram
kHz
. . . . . . . . . . . . . .
kilohertz
k
..................
kilohm
. .
kilovolt
. . .
pound
LC
. . . . . . . . . . . . .
inductance-
capacitance
LED
. . . . .
light-emitting diode
LF
...........
low frequency
LIM
..................
limit
LIN
.......
linear taper (used
LK WASH
ck washer
LO
. . . . . .
I
oscillator
LOG
.......
logarithmic taper
log
............
logarithm(ic)
in
(used in parts list)
LPF
. . . . . . . . . .
low pass filter
LV
.............
low voltage
m
. . . . . . . . . .
meter (distance)
mA
.............
milliampere
MET OX
......
metallic oxide
MF
......
medium frequency:
microfarad (used in
parts list)
MFR
. . . . . . . . . .
manufacturer
mg
. . . . . . . . . . . . . . .
milligram
MHz
. . .
megahertz
mH
. . . .
. millihenry
mho
. . . . . . . . . . . . . . . . .
mho
min
...........
minute (time)
..........
minute (plane angle)
MlNAT
. . . . . . . . . . .
miniature
mm
. . . . . . . . . . . . . .
millimeter
NOTE
All abbreviations in the parts list will be in upper-case.
6-3
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