HP 7475A Service Manual page 35

Model 7475A
Section IV
Table 4-6. Reference Designations and Abbreviations (Continued)
M 0 M .................. momentary
MOS .................. metal-oxide
semiconductor
ms ....................... millisecond
MTG ...................... mounting
MTR ............................ meter
(indicating device)
mV ........................... millivolt
mVac .................. millivolt, ac
mVdc .................. millivolt, de
m Vpk ............. millivolt, peak
m Vp-p ..................... millivolt,
peak-to-peak
mVrms ............. millivolt, rms
mW ......................... milliwatt
MU X ...................... multiplex
MY ............................... mylar
µA .................... microampere
µ
F ....................... microfarad
µH ....................... microhenry
µmho ..................... micromho
µs ...................... microsecond
µ V .......................... microvolt
µ Vac ................. microvolt, ac
µ
Vdc ................ microvolt, de
µ
Vpk ............ microvolt, peak
µ Vp-p .................... microvolt,
peak-to-peak
µ Vrms ............ microvolt, rms
µ W ........................ microwatt
nA ..................... nanoampere
NC .................. no connection
NI
C .............. normally closed
NEG ......................... negative
nF ......................... nanofarad
NI PL. ................ nickel plate
N / 0 ............... normally open
NOM ........................ nominal
NORM ...................... normal
N PN .......... negative-positive-
negative
N PO ............ negative-positive
zero (zero temperature
coefficient)
NRFR ....... not recommended
for field replacement
NSR ................ not separately
replaceable
1-A-25-3
ns ....................... nanosecond
n W ......................... nanowatt
OBD ...... order by description
OD .............. outside diameter
OH ......................... oval head
OP AMPL .......... operational
amplifier
OPT ........................... option
OSC ...................... oscillator
OX ............................... oxide
m .............................. oonCT
n ....................................
ohm
P ................................. peak
(used in parts list)
PAM ............ pulse-amplitude
modulation
PC .................. printed circuit
PCM ................... pulse-code-
modulation; pulse-count
modulation
PDM .............. pulse-duration
modulation
p F .......................... picofarad
Pl V ....... peak inverse voltage
pk .................................. peak
PN P .......... positive-negative-
positive
P/O ............................ part of
POL Y .................. polystyrene
PORC .................... porcelain
POS ....... positive; position(s)
(used in parts list)
POSN ....................... position
POT ................ potentiometer
p-p .................... peak-to-peak
PP .................... peak-to-peak
(used in parts list)
PPM .............. pulse-position
modulation;
parts per million
PREAM PL ........ preamplifier
PRF ............. pulse-repetition
frequency
PRR ....... pulse repetition rate
ps ........................ picosecond
PT ............................... point
PTM ..................... pulse-time
modulation
PWN ................... pulse-width
modulation
PWV ............... peak working
voltage
RC ....................... resistance-
capacitance
RECT ........................ rectifier
REF ........................ reference
REG ....................... regulated
REPL. ................. replaceable
RF ................ radio frequency
RFI .............. radio frequency
interference
RH ..................... round head;
right hand
RLC ..................... resistance-
inductance-
capacitance
RMO ........... rack mount only
rms ............ root-mean-square
RND ........................... round
ROM ........ read only memory
R & P ............. rack and panel
R WV ............ reverse working
voltage
S ............ scattering parameter
s ....................... second (time)
" ................................ second
(plane angle)
S-8 .............. slow-blow (fuse)
(used in parts list)
SCR ........... silicon controlled
rectifier; screw
SE .......................... selenium
SECT ....................... sections
SEMICON ..... semiconductor
SHF ....... superhigh frequency
SI ................................ silicon
SIL ............................... silver
SL .................................. slide
SN R ....... signal-to-noise ratio
SPOT .................. single-pole,
double-throw
SPG ............................ spring
SR ........................... split ring
SPST ................... single-pole,
single-throw
SSB ............... single sideband
NOTE
All abbreviations in the parts list will be in upper-case.
MUL Tl PLIERS
Abbreviation Prefix Multiple
T tera 10
12
G
giga 10
9
M
mega 10
6
k
kilo 10
3
da deka
10
d deci
I0-1
c centi
I0-2
m mi Iii
I0-3
µ
micro
I0-6
n nano
I0-9
p
pico
I0-12
f fem to
IO_,,
a atto
I0-18
SST .................. stainless steel
STL ................................ steel
SQ .............................. square
SWR ...... standing-wave ratio
SYNC ................. synchronize
T ....... timed (slow-blow fuse)
T A ........................... tantalum
TC ...................... temperature
coefficient
TD ........................ time delay
TERM ...................... terminal
TFT ......... thin-film transistor
TGL ............................ toggle
THD ........................... thread
TH RU ...................... through
TI ............................ titanium
TO L ....................... tolerance
TRIM ...................... trimmer
TSTR ..................... transistor
TTL. ....... transistor-transistor
logic
U ....................... micro (
I0- 6 )
(used in parts list)
U F. ..................... microfarad
(used in parts list)
UHF ....... ultrahigh frequency
UN REG ............. unregulated
V ..................................... volt
VA ...................... voltampere
Vac ........................... volts, ac
VAR ......................... variable
Vdc ........................... volts, de
VDCW ...... volts, de, working
(used in parts list)
Vpk ...................... volts, peak
Vp-p ........ volts, peak-to-peak
Vrms ..................... volts, rms
VTVM ............. vacuum-tube
voltmeter
V(X) .............. volts, switched
W ................................... watt
W/ ................................. with
WIV ............. working inverse
voltage
WW ..................... wirewound
W/O .......................... without
z, .....................
characteristic
impedance
4-13