HP 7470A Service Manual page 20

Ir*-
Model 7470A
-
Section 1 1 1
Table 3-6. Reference Doeinnation8 and Abbreviation8
A. ;
........................
urembly
AT
....................
attenua(or.
Lolator, termination
B.,
.....................
fan: motor
BT
...........................
h t t r r y
C
..........................
capacitor
CP
..........
,...,..........coupler
CR
.............................
diodq
diode thyrirtor, varactor
DC
.......
diractional coupler
DL
. . . ...................
delay line
DS
.................
annunciator,
rignaling device
(audible or virual):
lamp: LED
A
..............................
am-
rc
........
altsnrating current
ACCESS
.............
accwrory
ADJ
..................
adjurtmont
A/D
........
analog-todigital
AF
...........
audio frequency
AFC
...................
automatic
fkequency control
AGC
..........
automatic g u n
conuol
AL
.....................
aluminum
ALC
..........
automatic Ievd
control
A M
.....................
amplitude
modulation
AMPL
.................
amplifier
APC
.......
automatic p h u e
control
ASSY
..................
urembly
AUX
....................
auxiliuy
rvg
.........................
average
AWG
..........
A m k c a n wire
gauge
BAL
.......................
balance
BCD
..............
b i n u y coded
decimal
BD
.............................
board
BE CU
................
beryllium
copper
BFO
...........
beat frequency
orcillator
BH
...................
binder head
BKDN
..............
breakdown
BP
.......................
bandpur
BPF
...........
bandpur filter
BRS
............................
b r u r
BWO
........
backward-wave
oreillator
CAL
.....................
calibrate
ccw
.........
counterclockwire
CER
.......................
ceramic
CHAN
...................
channel
em
......................
centimotre
CMO
..........
cabinet mount
only
COAX
.....................
coaxial
REFERENCE DESIGNATIONS
E
..................
mi.esl1an.o~ P
........
d.ctrical connector
elrclricd p u t (movable portion);
F
...................................
f u n
plug
........................
...............................
F L filter
Q
truuirtor.
H
.........................
hardware SCR;
HY
.......................
circulator triode thyriotor
.............................
.......
J..
d.ctrical connector R reairtor
.....................
(rtationuy portion) RT thermutor
...............................
jack S rwitch
.....................
K
..................................
d a y T h n r f o r m e r
.............
L
..................................
coil;
.
TB terminal board
inductor TC
................
thermocouple
M
................................
motor
TP
........................
tmt point
MP
...............
mikellanoour U
...........
inkgrated armit;
mechanical p u t minocirmit
ABBREVIATIONS
................
COEF coefflciont
.....................
COM common
............
COMP comporition
COMPL
...............
complote
................
CONN connector
CP
.............
cadmium plate
........
CRT cathoderay tube
CTL
..........
complementary
tranrirtor logic
CW
.........
continuour wave
m
. , .....................
clockwime
D/A
........
digital-to-analog
dB
............................
decibel
dBm
..........
docibel referred
to
1
mW
dc
..................
direct murent
dog
............................
d e g m
(temperature i n m d )
or difference
d e g m (plane angle)
........
"C
...............
degree Celriur
(centigradd
" F
........
degree Fahrenheit
O K
................
dogma Kdvin
DEPC
..................
depomtd
carbon
DET
.......................
detector
diam
.....................
diameter
DIA
......................
diameter
( u d in p u r r lut)
DIFF AMPL
...
differential
ampliflar
div
.........................
divirion
DPDT
..............
doublepole,
doublethmw
DR
...............................
drive
DSB
.........
double rideband
DTL
.........
diode tranrutor
logic
DVM
......
digital voltmeter
E C L
..........
emitter coupled
logic
EMF
.............
elsetromotive
f o m
EDP
...........
elcctmnic data
procamring
............
ELECT electmlytic
.......
ENCAP mcaprulatd
.......................
EXT oxtemal
.................................
F farad
...................
FET field-effect
tranirtor
F/F
.........................
flip fldp
FH
........................
flat head
FIL H
....
,
......
fllliater head
FM
......................
fr#quen&y
modulation
FP
.....................
front panel
FREQ
.................
frequency
FXD
............................
f i x d
g
..................................
gram
GE
...................
germanium
GHr
.....................
gig~~hartz
GL
..............................
glum
GND
..................
ground(ed)
H
............
,
.... . . ............
henry
h
..................................
hour
HET
.................
heterodyne
HEX
..................
hexagonal
HD
...............................
head
HDW
...................
hardwu.
HF
.............
high
frequency
HC
........................
mercury
HI
................................
high
HP
..........
Hewlett-Packard
HPF
...................
high p u r
filter
HR
...............................
hour
(d
in p a r a lirt)
HV
.................
high voltage
Hz
...............................
H a
IC
..........
integrated circuit
ID
.............
inride diameter
I F
...................
intermediate
fmuency
IMPG
............
impregnated
i n
................................
inch
INCD
...........
incandercmt
INCL
..................
includdr)
INP
............................
input
INS
.....................
inrulation
INT
.......................
internal
NOTE
All abbreviation8 in the part8 li8t will be in uppercare.
V
.............................
electron
t u k
VR
...........................
vol-
n g ~ 1 a t o ~
breakdown
diode
W
...............................
cable
h n r m i u i o n path;
wire
X
................................
mcket
Y
......................
cryrtal unit
(pi&.ctric or
q u u t t )
Z
....................
t u n d cavity;
tuned arcuit
kg
.........................
kilogram
kHz
.......................
kiloher&
k n
...........................
kilohm
kV
...........................
kilovolt
Ib
..............................
pound
LC
...................
inductance-
capacitance
LED
............
light-omitting
diode
LF
........,......
low frequmcy
LG
................................
long
LH
......................
loft hand
LIM
.............................
limit
LIN
.................
linear taper
( u r d in p u r r l u t )
lin
..............................
linear
LK WASH
......
lock w u h e r
LO
......
low local oreillator
LOG
......
logarithmic taper
(uud in p u r r lirt)
log
.................
loguithm(ic)
LPF
.............
low p u r filter
LV
...................
low voltage
m
.............
metre
(distance)
mA
.................
milliampere
MAX
..................
maximum
Mn
.......................
megohm
MEG
...................
me
(10')
(ured in par& l u t )
MET FLM
........
metal film
MET OX
.....
metallic oxide
MF
......
medium frequency;
microfarad
(ured in p u r r lut)
MFR
............
manufacturer
mg
......................
milligram
MHz
..................
megahe*
mH
....................
millihenry
mho
..............................
mho
MIN
...................
minimum
min
...............
minute (time)
.................................
minute
(plane angle)
MINAT
..............
miniature
rnm
....................
millirnetre
MOD
.................
modulator
Revision A: October 1986