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Replaceable Parts
Model 11848 A
Table 4. Abbreviations (2 of 2)
MOD . . . . modulator
MOM
momentary
MOS
metal-oxide
semiconductor
ms
. millisecond
MTG
mounting
MTR
meter (indicating
device)
mV
millivolt
mVac
millivolt, ac
mVdc
millivolt, dc
mVpk
millivolt, peak
mVp-p
millivolt, peak-
to-peak
mVrms
millivolt rms
mW
milliwatt
MUX
multiplex
MY
mylar
jtA
microampere
fif
microfarad
MH
microhenry
/tmho
micromho
its
microsecond
JIV
microvolt
MVac
. . microvolt ac
pVdc
microvolt dc
MVpk
microvolt, peak
pVp-p
microvolt, peak-
to-peak
MVrms
microvolt rms
MW
microwatt
nA
nanoampere
NC
no connection
N/C
normally closed
NE
neon
NEG
negative
nF
nanofarad
Nl PL
nickel plate
N/O
normally open
NOM
nominal
NORM
normal
NPN
negative-positive-
negative
NPO
negative-positive
zero (zero tempera
ture coefficient)
NRFR
not recommended
for field replacement
NSR
not separately
replaceable
ns
nanosecond
nW
nanowatt
OBD
order by description
OD
outside diameter
OH
oval head
OP AMPL
operational
amplifier
OPT
option
OSC
oscillator
OX
oxide
oz
ounce
Q
ohm
P
peak (used in parts
list)
PAM
pulse-amplitude
modulation
PC
printed circuit
PCM
pulse-code modula
tion; pulse-count
modulation
POM
pulse-duration
modulation
pF
picofarad
PH BRZ
phosphor bronze
PHL
Phillips
PIN
positive-intrinsic-
negative
PIV
peak inverse voltage
pk
peak
PL
phase lock
PLO
phase lock oscillator
PM
phase modulation
PNP
positive-negative-
positive
P/0
part of
POLY
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
PREAMPL
preamplifier
PRF
pulse-repetition
frequency
PRR
pulse repetition rate
ps
picosecond
PT
point
PTM
pulse-time
modulation
PWM
pulse-width
modulation
PWV
peak working
voltage
RC
resistance-
capacitance
RECT
rectifier
REF
REG
REPL
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
RWV
reverse working
voltage
S
scattering parameter
s
second (time)
..."
second (plane angle)
S-B
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
SNR
signal-to-noise ratio
SPOT
single-pole,
double-throw
SPG
spring
SR
split ring
SPST
single-pole,
single-throw
SS
Service Sheet
SSB
single sideband
SST
stainless steel
STL
steel
SQ
square
SWR
standing-wave ratio
SYNC
synchronize
T
•. timed (slow-blow fuse)
TA
tantalum
TC
temperature
compensating
TO
time
delay
TERM
terminal
TFT
thin-film transistor
TGL
toggle
THO
thread
THRU
through
Tl
titanium
TOL
TRIM
TSTR
TTL
transistor-transistor
logic
TV
television
TVI —
television interference
TWT
traveling wave tube
U
micro (1<r*) (used
in parts list)
UF
microfarad (used in
parts list)
UHF
ultrahigh frequency
UNDEF
undefined
UNREG
unregulated
V
volt
VA
voltampere
Vac
volts, ac
VAR
...variable
VCO . . . . . . voltage-controlled
oscillator
Vdc
volts, dc
VDCW
volts, dc, working
(used in parts list)
V(F)
volts, filtered
VFO
variable-frequency
oscillator
VHF
very-high frequency
Vpk
volts, peak
Vp-p
volts, peak-to-peak
Vrms
volts, rms
VSWR
voltage standing
wave ratio
VTO
voltage-tune
oscillator
VTVM
vacuum-tube
voltmeter
V(X)
volts, switched
W
watt
W/
with
WTV
working inverse
voltage
WW
wirewound
W/0
without
YIG
yttrium-iron-garnet
ZQ
characteristic
impedance
NOTE
All abbreviations in the parts list will be in upper-case.
Abbreviation
T
G
M
k
da
d
c
m
M
n
P
f
a
MULTIPLIERS
Prefix
tera
g«ga
mega
kilo
deka
deci
centi
milli
micro
nano
pico
femto
atto
Multiple
10
12
10«
10
6
103
10
10"
1
10-2
10-3
10"
8
10-9
io-«
io-«
10"
1
*
26
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