Filter
Top Products
Model
8904A
Replaceable
Parts
nable
6-1.
Reference Designations
AT
.
B
..
BT
.
c
..
CP
.
CR
.
DC
.
DL
.
,
DS
.
A
........
assembly
.....
attenuator; isolator;
.............
fan: motor
................
battery
..............
capacitor
...............
coupler
...........
diode; diode
thyristor: varactor
......
directional coupler
..............
delay line
...........
annunciator:
signaling device
(audible or visual);
lamp; LED
termination
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)
ac
........
alternating current
ACCESS
.........
accessory
ADJ
............
adjustment
AID
........
analog-to-digital
AL
..............
aluminum
ALC
.........
automatic level
control
amplitude modulation
APC
.......
automatic phase
control
ASSY
............
assembly
AUX
..............
auxiliary
avg
. .....
average
AWG American wire
BAL
...............
balance
BCD
..........
binary coded
BD
.................
board
BECU
......
beryllium copper
BFO
.........
beat frequency
BKDN
..........
breakdown
BP
..............
bandpass
BPF
.........
bandpass filter
BRS
................
brass
BWO
.......
backware-wave
CAL
..............
calibrate
ccw
.......
counter-clockwise
CER
..............
ceramic
CHAN
.............
channel
cm
..............
centimeter
CMO
.....
cabinet mount only
COAX
..............
coaxial
...........
amplifier
decimal
oscillator
ABBREVIATIONS
COEF
...........
coefficient
COM
.............
common
COMP
.........
composition
COMPL
...........
complete
CONN
...........
connector
CP
..........
cadmium plate
CRT
.......
cathode-ray tube
CTL
.........
complementary
CW
........
continuous wave
cw
..............
clockwise
cm
..............
centimeter
D/A
........
digital-to-analog
dB
.................
decibel
dBm
........
decibel referred
dc
............
direct current
deg
.....
degree (temperature
interval or difference)
angle)
OC
..........
degree Celsius
(centigrade)
OF
........
degree Fahrenheit
OK
...........
degree Kelvin
DEPC
.....
deposited carbon
DET
..............
detector
diam
..............
diameter
DIA
.......
diameter (used in
transistor logic
to
1
mW
...'
...........
degree (plane
parts list)
DlFF
AMPL
......
differential
amplifier
div
................
division
DPDT
..........
double-pole,
double-throw
DR
..................
drive
DSB
.......
double sideband
DTL
........
diode transistor
logic
logic
DVM
.......
digital voltmeter
ECL
........
emitter coupled
EMF
.....
electromotive force
EDP
.........
electronic data
ELECT
..........
electrolytic
ENCAP
........
encapsulated
EXT
...............
external
F
...................
farad
FET
....
field-effect transistor
.......
flip-flop
FM
....
frequency modulation
FP
.............
front panel
FREQ
............
frequency
FXD
.................
fixed
g
...................
gram
GE
.............
germanium
GHz
............
.gigahertz
GL
..................
glass
GRD
............
ground(ed)
H
....
......
henry
h
....
.......
hour
HET
._ . .
heterodyne
HEX
.............
hexagonal
HD
..................
head
IiF
..........
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
IMPG
..........
impregnated
in
............
incandescent
INCL
.............
include(s)
INP..
................
input
INS
..............
insulation
processing
parts list)
frequency
INT
................
internal
kg
................
kilogram
k
..................
kilohm
kV
.................
kilovolt
Ib
..................
pound
LC
.............
inductance-
capacitance
LED
.....
light-emitting diode
LH
...............
left
hand
LIM
..................
limit
LIN
.......
linear taper (used
in parts list)
LK WASH
......
lock washer
LO
......
low;
local
oscillator
LOG
.......
logarithmic taper
(used in parts list)
log
'
...
lcgarithm(ic)
LV
.
...
low voltage
LPF
.
low pass filter
m
..........
meter (distance)
mA
.............
milliampere
MAX
.............
maximum
M
................
megohm
MEG
.......
meg
(lo6)
(used
in parts list)
MET FLM
........
metal film
MET
OX
......
metallic oxide
MF
......
medium frequency;
microfarad (used
in
manufacturer
mg
...............
milligram
mH
..............
millihenry
mho
.................
mho
min
...........
minute (time)
..........
minute (plane angle)
MlNAT
...........
miniature
mm
..............
millimeter
NOTE
All abbreviations
in
the parts list will
b%
in upper-case.
6-3