Replaceable Parts List; Abbreviations - Agilent Technologies 4284A Service Manual

4-5. R E PLACEABLE PARTS LIST
The replaceable parts list provides information about the replaceable parts.

4-5-1 . ABBREVIATIONS

Table 4-2 lists the abbreviations used throughout this manual. In some cases, three forms of
the same abbreviation are used: all upper case, all lower case, and mixed upper and lower
case. Abbreviations used in the parts lists are always u pper case, and m ixed upper- and
lower-case letters.
Table 4-2 . List of Reference Designators and Abbreviations
A
" assembly
=
B
nlotor
BT '" battery
=
C capacitor
=
C P coupler
=
CR diode
OS -=
DL delay Une
=
devIce slgnaUng (lamp)
=
A amperes
=
A. F. C. automatic (requency control
=
AMPL
amplifier
CU
=
B. F. O.
bl"at frequency oscllbtor
=
BE
beryllium coppe-r
=
BH
binder head
=
B P
bandpass
=
BRS
brass
BWO
:: backward wave oscillator
CCW
:: counter-elockwlse
=
CER
ceramic
CMO :: cabinet mount only
=
COEF coefflcient
::
COM :: common
COMP
:: composUlon
COMPL complpte
=
CONN
connpctor
=
C P
cadmium plate
=
CRT
cathode-ray tube
CW
PC :: clockwlse
OR =
DE
deposited carbon
'" drlv('
ELECT :: eJ('ctrolytlc
=
ENCAP encapsulated
=
EXT external
I O-I S
I
=
F
rarads
t
:; feomto
FII
:; Ilal head
FIL II
:; mUster head
=
FXD
fbed
=
] 0 9
G :: gip
GE ou
'" germanium
( )
GL
:;' glass
GRD
'" g r nd f' d
REFERENCE DESIGNATORS
Q
E " mise �lectronle part P
F
" [use
J
FL
:: rnter R
K •
jack RT
=
relay S
L '" Inductor T
=
M meter TB
=
mechanical pu t
MP TP
ABBREVIATIONS
=
N PN
H 1le'nrles
=
HEX hexagonal
=
NRFR
HG mercury
=
HR
haur(s)
=
NSR
H hertz
z
=
IF
Intermediate freq.
=
IMPG Impregnated
=
INCD OBD
Incandescent
=
INCL OH
tnc:lude(s)
INS OX
,.. InsulaUon(M)
INT
,. Intt"rnaJ
1000
'" kilo :: PC
k
P
UN =
LH left hand
LK
=
linear taper p
=
WASH PH BRZ
lock washer
PHL
LOG :: logarithmic t:aper
PIV
LPF :; low pass (iUer
10.3
PNP
•
m mUll _
= 1 0 e.
plO
M
m e g ::
MET FLM POLY
:: metal film
MET OX PORC
:: metallic oxide
MFR POS
:; manufacturer
MINAT par
:; miniature
PT
PP
MOM :; momentary
=
MTG mounting
:: " my la r " PWV
MY
=
10"
n :: nano
=
N IC
normally clost'd
=
NE RECT
nf'on
=
NI PL RF
nickel plate
=
RH
NfO
normally open
=
N PO nE'gativf' posltlv� zero
RMO
(uro tempe-raturf'
RMS
coefftclf'nt}
4-3
U
" Integrate-d clrcuH
'" plug
V
" transistor '" vacuum, tube, neon
" resistor bulb, photocell, etc.
=
VR
thermistor "" voltage regulator
=
=
W
swltch cable
Y =
=
X
transforme-r s
=
terminal board :: crystal
=
test point
= =r
negative-positive- RWV reverse worldng
negative voltage
=
not recommended ror
lield replacement
= =
S-B
not separately slow-blow
=
5CR
rl"placeable seTP'"
=
SE
selenium
=
= SECT
sectlon(s)
OR
order by description
SEMICON semiconductor
=
oval head :::I
= SI silicon
oxide �
SlL sUver
SL ,. sUde
: ! :"
=
��� SPG sprlne
� • r � �
pe2k SST
SPL ,. special
t U1t
:: stainless steel
l
SR
:: spill
:: phosphor bronze
STL
• :: steel
Phllllp.
=
TO
peak. tnnne voltage
TA
:: tantalum
:I:
:: positive-negatlve-
time
pos1Uve •
TGL
toggle
TI
:: part or
THD .. thread
=
polystyrene
.. titanium
'" porcelain
TOL .. tolerance
:: posltiones)
TRIM :: trimmer
z
:; potentiometer
TWT
•
peak-to-pe2k �
:: point
:: micro ::
:: peak. working voltage
=
VAR
=
VDCW
WI :: with
:: recUfier
=
W
:: watts
radio frt'quency
WIV
,. working lny�rs�
:: round head or
WW
right hand
:: rack mount only ,. wlrewound
W/O
'" root -mean square :: without
k
oc
e t
ring
delay
traveUng wave tube
10. 6
de
variable
workJng
voUs
voltage
0001-9700