HP TM 11-6625-2779-14&P Manuel d'utilisateur télécharger pdf (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 kΩ........................ kilohm(s) = 10

ohms OD ................................outside diameter TiO

......................... titanium dioxide

cer...............................................ceramic kHz ..........................kilohertz = 10

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

hertz p/o..................................................part of working voltage

DPST ...............double-pole single-throw mΩ ...................megohm(s) = 10

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 µF ...................................... microfarad(s) ........................ coefficient, long term sta- w/o.........................................without

fxd.....................................................fixed µs....................................microsecond(s) ............................ bility, and/or tolerance) ww................................... wirewound

................................................................. µV .......................microvolt(s) = 10

-6

volts

GaAs.............................gallium arsenide my.................................................Mylar® R ..................................................resistor *.............. optimum value selected at

GHz.......................gigahertz = 10

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

centi c 10

-2

giga G 10

milli m 10

-3

mega M or Meg 10

micro µ 10

-6

kilo K or k 10

nano n 10

-9

hecto h 10

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

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 ... 82 83

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HP TM 11-6625-2779-14&P Manuel d'utilisateur Page 54

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