HP TM 11-6625-2779-14&P - Manual (Page 54)

Model 3555B Section VI
SECTION VI
REPLACEABLE PARTS
6-1. INTRODUCTION.
6-2. This section contains information for ordering
replacement parts. Table 6-1 lists parts in alphameric
order of their reference designators and indicates the
description, -hp- 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 five-
digit code. (See Appendix A for list of
manufacturers.)
d. Manufacturer's part number.
6-3. Miscellaneous parts are listed at the end of
Table 6-1.
6-4.
ORDERING INFORMATION.
6-5. To order a part, note the manufacturer's part
number (Table 6-1, MFR PART NO.) and then cross
reference that number in the cross-reference index
(Table 6-2). Order the part through normal channels. If
the NSN is not listed for the part in Table 6-2, order by
MFR PART NO. and the manufacturer's identification
number listed under the MFR number in Table 6-1.
ABBREVIATIONS
Ag.................................................... silver ID .................................... inside diameter ns ............ nanosecond(s) = 10 -9 seconds SPDT ........single-pole double-throw
Al ..............................................aluminum impg..................................... impregnated nar................. not separately replaceable SPST........... single-pole singe-throw
A..............................................ampere(s) incd.....................................incandescent
Au......................................................gold ins...................................... insulation(ed)
Ω
.................................................. ohm(s) Ta........................................tantalum
obd........................... order by description TC ............... temperature coefficient
C................................................capacitor k
Ω
........................ kilohm(s) = 10 +3 ohms OD ................................ outside diameter TiO
2
......................... titanium dioxide
cer ...............................................ceramic kHz ..........................kilohertz = 10
+3
hertz tog ...........................................toggle
coef ......................................... coefficient P ...................................................... peak tol .......................................tolerance
com ........................................... common L.................................................. inductor Pa .................................... picoampere(s) trim ....................................... trimmer
comp .................................... composition lin........................................... linear taper pc ....................................... printed circuit TSTR ................................ transistor
conn ....................................... connection log................................. logarithmic taper pF................................. picofarad(s) 10 -12
farads V..............................................volt(s)
dep ...........................................deposited mA .......... milliampere(s) = 10 -3 amperes piv ........................... peak inverse voltage vacw .................... alternating current
DPDT ..............double-pole double-throw MHz .................... megahertz = 10 +6 hertz p/o..................................................part of working voltage
DPST ...............double-pole single-throw m
Ω
...................megohm(s) = 10 +6 ohms pos .......................................... position(s) var ........................................ variable
met film.................................... metal film poly ....................................... polysterene vdcw .. direct current working voltage
elect ....................................... electrolytic mfr ......................................manufacturer pot...........................................potiometer
encap ................................. encapsulated ms..........................................millisecond p-p....................................... peak-to-peak W ...........................................watt(s)
mtg ........................................... mounting ppm................................ parts per million w/................................................ with
F .................................................. farad(s) mV ........................ millivolt(s) = 10 -3 volts prec..................... precision (temperature wiv ............... working inverse voltage
FET .........................field effect transistor µ F ...................................... microfarad(s) ........................ coefficient, long term sta- w/o......................................... without
fxd..................................................... fixed µ s.................................... microsecond(s) ............................ bility, and/or tolerance) ww ................................... wirewound
................................................................. µ V .......................microvolt(s) = 10 -6 volts
GaAs .............................gallium arsenide my................................................. Mylar® R ..................................................resistor *.............. optimum value selected at
GHz .......................gigahertz = 10 +9 hertz Rh ...............................................rhodium factory, average value
gd .............................................guard(ed) nA .......... nanoampere(s) = 10 -9 amperes rms.............................. root-mean-square shown (part may be omitted)
Ge ......................................... germanium NC ..................................normally closed rot....................................................rotary ** .............. no standard type number
grd ..........................................ground(ed) Ne .................................................... neon assigned (selected or
NO .................................... normally open Se ............................................. selenium special type
H.............................................. henry(ies) NPO...................... negative positive zero sect .......................................... section(s)
Hg............................................... mercury ..................(zero temperature coefficient) Si....................................................silicon
Hz................. hertz (cycle(s) per second) sl ...................................................... slide ® Dupont de Nemours
DECMAL MULTIPLIERS
Prefix Symbols Multiplier Prefix Symbols Multiplier
tear T 10 12 centi c 10 -2
giga G 10 9 milli m 10 -3
mega M or Meg 10 6 micro
µ
10 -6
kilo K or k 10 3 nano n 10 -9
hecto h 10 2 pico p 10 -12
deka da 10 femto f 10
-15
deci d 10 -1 atto a 10 -18
DESIGNATORS
A............................................... assembly FL ..................................................... filter Q ...............................................transistor TS ............................... terminal strip
B..................................................... motor HR ................................................. heater QCR................................transistor-diode V................. vacuum tube, neon bulb
BT .................................................battery IC .................................. integrated circuit R ..................................................resistor photocell, etc.
C................................................capacitor J.........................................................jack RT............................................thermistor W .............................................cable
CT ...................................................diode K ...................................................... relay S ....................................................switch X............................................. socket
DL............................................. delay line L.................................................. inductor T ........................................... transformer XDS................................ lampholder
DS ....................................................lamp M.....................................................meter TB .....................................terminal board XF.....................................fuseholder
E...............................misc electronic part MP ................................. mechanical part TC......................................thermocouple Y............................................. crystal
F ........................................................fuse P ....................................................... plug TP ............................................. test point Z ........................................... network
6-1