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Model
4
12A
Section VI
SECTION V I
REPLACEABLE PARTS
6-1. INTR 0 D UCTlO N.
6-2.
This section contains information for ordering
replacement parts. Table 6-1 lists parts in alphameric order
of their reference designators arid indicates the description,
h p - part number of each part, together with any applicable
notes, and provides the following:
a. Total quantity used in the instrument (TQ
column). The total quantity of a part is given the
first time the part number appears.
b. Description of the part. (See list of abbreviations
below .)
c. Typical manufacturer of the part in a fivedigit
code. (See Appendix
A
for list of manufacturers.)
d. Manufacturer's part numbcr.
A
= a s w m h l y
B
=
motor
BT
= battery
C
=
ca[mritor
CR
= dicdc
DL
=delay llne
DS
= l a m p
E
= misc electronic part
At?
A1
A
Au
C
c e r
coef
com
comp
conn
dep
DPDT
DPST
elect
encap
P
FET
fxd
GaAS
GHz
nd
Ge
grd
H
Hb'
Hz
.'"
'
= silver
= aluminum
=
ampere
(s)
=
gold
= capacitor
= ceramic
= coefficient
= common
= composition
= connection
= deposited
=
double-pole double-
throw
= double-pole single-
throw
= electrolytic
=
encapsulated
=
farad
(9)
= field effect transistor
=
fixed
=
bmllium arsenide
=
gigahertz =
hertz
=
guard (ed)
=
germanium
= ground (ed)
= hen* (ies)
=
merrury
= hertz (cycle
( 8 )
per
second)
F
FL
HR
1 c
J
K
L
M
= fusc
= filter
= heater
=
integrated circuit
= j a c k
=
relay
= inductor
= meter
6-3. Miscellaneous parts are listed at the end of Table 6-1.
6-4. 0
R D
E
R
ING INFO RMATIO N.
6-5.
To obtain replacement parts, address order or inquiry
to your local Hewlett-Packad Field Office. (See Appendix
B for list of office locations.) Identify parts by their
Hewlett-l'ackard part numbers. Include instrument model
and serial numbers,
6-6. NON-LISTED PARTS.
6-7. To obtain a part that is not listed, include:
a.
Instrument model number.
b. Instrument serial number.
c.
Dcscription of the part.
d. Function and location of thc part.
DESIGNATORS
U P
= mechanical
part
P
= plug
Q
= transistor
F R
= transistor-diode
= resistor
RT
=thermistor
S
= switch
T
=transformer
ABBREVIATIONS
ID
= inside diameter
n s
=
nanosecond
( 8 )
=
impg
= impregnated
seconds
incd
=
incandescent
nsr
=
not separately replace-
ins
=
insulation (ea)
able
k n
= kilohm (s)
=
lo''
ohms
0
= ohm
( 8 )
= k f i o , , , , r h
l0+3
hertz
OM
=
order
by
description
OD
= outside diameter
=
peak
P
PC
=printed circuit
L
=
inductor
lin
= linear
taper
loft
= logarithmlc taper
m
=
mfill
10''
mA
=
milliampere
(s)
=
10''
amperes
MHz
Mn
= megahertz = 10" her&
= megohm6) = 1 0 6
ohms
met
flm =
metal film
mfr
= manufacturer
mtg
= mounting
mV
F
= micro
=
10-8
P V
my
=Mylar
@
n~
= nanoampere (s)
=
amperes
NC
=
normally closed
Ne
=neon
NO
= normally open
NPO
=
negative positive zero
(zero temperature co-
efficient)
=
millivolt
( 8 )
=
I O - '
volts
= microvolt
(s)
= 10'' volts
@
Dupont de Nemours
R
Rh
r m s
rot
Se
sect
Si
= picoZarad (s) =
lo-''
farads
= peak inverse voltage
= part
of
-=
position
( 8 )
=
polystyrene
= potentiometer
= peak-to-peak
= p a r t s per milllun
= precision (temperature
ocx?fficient. long term
stability. and/or tol-
erance)
=
resistor
= rhodium
= root-mean-square
=
rotary
= srlenium
= section
(s)
= silicon
TC
=
thcrmoronlplc
V
=
vacuum
IUIW.
tnwn
W
=
ra1,le
X
=
socket
XDS
= lampholder
XF
= fuseholder
Z
= nctwork
hulb. photocrll. ctv.
sl
= slide
SPDT
= slngle-pole double-
throw
SPST
=
single-pole single-
throw
T a
=tantalum
TC
= temperature cwfficlent
TLO?
= titanlum dioxide
tog
IO1
trim
TSTR
V
vacw
var
vdcw
=toggle
=tolerance
= trimmer
=transistor
= alternating current
working voltage
= variable
=
direct current working
voltage
=
volt
( 8 )
W
=watt
(a)
w/
=with
wiv
=
working inverse vultagc
w/o
=without
ww
=
wirewound
*
= optimum value selected
a t factory. averagc
value shown (part may
be omitted)
ber assigned (seleetud
or special type)
**
=
no standard type num-
00
1
29-5
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