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P
т
Model 427А
Section УП
SECTION
УП
REPLACEABLE
PARTS
7-1.
INTRODUCTION.
7-2.
This
section
contains information
for ordering
replacement parts.
Table 7-1
lists
parts
in alpha-
meric
order
of their reference designåtors and indi-
cates the description,
-hp- part number of each part,
together with any applicable notes,
and provides the
following:
а.
Total quantity used in the instrument (ТО)
column).
b.
Description of the part. (See list of abbrevia-
tions below.)
с.
Typical manufacturer
of the part іп а five-
digit code.
(See Appendix A for list of manu-
facturers, )
d.
Manufacturer's
part number.
4-3.
Miscellaneous
parts
are
listed
at the
end
of
Table 7-1.
Each factory selected component is keyed
to paragraph describing the selection of the component
value,
7-4.
ORDERING
INFORMATION.
7-5,
To obtain replacement parts, address order or
inquiry to your
local Hewlett-Packard
Field Office.
(See Appendix В for list of office locations.) Identify
parts by their Hewlett-Packard part numbers,
7-6.
NON-LISTED
PARTS.
7-7,
To obtain a part that is not listed,
include:
а,
Instrument model number.
b.
Instrument
serial number.
с.
Description of the part.
9.
Function and location of the part.
DESIGNATORS
A
= assembly
Е
- fuse
МР
= mechanical part
TC
= thermocouple
B
= motor
FL
= filler
P
= plug
У
= vacuum tube, neon
BT
= batlery
HR
= heater
Q
= Lranaistor
bulb, photocell, etc.
с
= capacitor
Ic
= integrated
circuit
QcR
= transisior-diode
w
= cable
ск
"diode
|
I
= jack
R
= resistor
x
= socket
DL
= delay line
K
= relay
RT
= thermistor
хоз
= lampholder
DS
= lamp
L
= inductor
5
= Switch
ХЕ
- fuseholder
Е
= mise electronic part
M
= meter
T
= transformer
РА
= network
ABBREVIATIONS
Ag
= silver
ш
= inside diameler
ns
= nanosecond (8) = 1079
sl
= slide
Al
= aluminum
impg
= impregnaled
seconds
SPDT
= single-pole double-
A
= alnpere (s)
ined
= incandescent
nsr
= not separalely replace-
throw
Au
= gold
ins
= insulation (ва)
able
SPST
= single-pole single-
=
throw
қа)
ји capacitor
ка
- kilohm (3) = 103 ohms
Q
= ohm {3)
се
= ceramic
43
bd
сөздер
Бай
ipti
Ta
- tanlalum
coef
= coefficient
kHz
= Kilohertz = 107
hertz
res
ЕШ т ke
TC
= lemperature coefficient
com
= common
=
а
а ala meter
то,
7 tilanium dioxide
vomp
- composition
L
= inductor
_
k
cann
= connection
lin
= linear taper
р
" рез. ted
circuit
Lag
= toggle
dep
- deposited
log
= logarithmic
taper
pe
= printed
circu
lol
= lolerance
А
-12
trim
= trimmer
DPDT
= double-pole double-
»
_
1473
РЕ
– picofarad (5) = 10
E
:
throw
m
= milli = 10
d
farada
ТӨТЕ
= transistor
DPST
= double-poic single-
mA
= milliampere (s) = 10
piv
= peak inverse voltage
У
= volt (8)
throw
amperes
48
p/o
= part of
vacw
= alternating current
MHz
= megahertz = 10°
heriz
pos
= position (8)
working vollage
elect
= electrolytic
мо
= megohm-s) = 10*9 ohms
poly
= polystyrene
var
- variable
епсар
= encapsulated
met flm = metal Шт
pot
= potentiometer
vdew
= direct current working
mfr
= manufacturer
р-р
= peak-to-peak
voltage
F
= farad (в)
mig
= mounting
-3
ppm
= parts per million
FET
= field effect transistor
my
= millivolt (9) = 10"
volte
pree
= precision (lemperature
w
= watt (s)
ка
= fixed
и
= miero = 10-6
6
coefficient, long term
w/
= with
GaAs
= gallium ars enide
uM
= microvolt (s) = 107"
volts
пене
and/or tot-
код
= ve
inverse voltage
GHz
= gigahertz =
10+
=
=
pi
giga s я 107%
hertz
шу
Mylar
E
AW
cowitevound
= guard
(e
лА
= nanoampere
(s) = 10
в
= resistor
БЕКЕТ
бе
= germanium
amperes
Rh
= rhodium
5
u қалі rn
grå
= ground (ed)
NC
= normally closed
rms
= root-mean-square
al
е
(рагі та
Ме
= neon
rot
= rotary
å ne те m"
y
H
= henry (ies)
NO
- normally open
е omitted)
Hg
= mercury
NPG
= negative positive zero
Se
- selenium
»
= no standard type num-
Hz
- hertz (cycle (s) per
(zero temperature co-
sect
- section (в)
ber assigned (selected
second)
efficient)
Si
= silicon
or special type}
REV $
@
Dupont de Nemours
01791-2
4-1
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