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Model 8901B
Replaceable
P a r t s
lbble 6-2. Abbreviations ( 2
of
2)
MOD
. . . .
modulator
MOS
...........
metal-oxide
ms
.............
millisecond
MTG
. . . . . . . . . . . . .
mounting
MTR
. . . . . . .
meter (indicating
mV
................
millivolt
mVac
...........
millivolt. ac
mVdc
...........
millivolt, dc
mVpk
.........
millivolt, peak
mVp-p
.......
millivolt, peak-
.
.
millivolt, rms
MUX
.............
multiplex
MY
. . . . . . . . . . . . . . . . .
mylar
pA
............
microampere
pF
..............
microfarad
pH
. . . . . . . . . . . . .
microhenry
pmho
. . . . . . . . . . . .
micromho
ps
. . . . . . . . . . . .
microsecond
pV
. . . . . . . . . . . . . . .
microvolt
pVac
. . . . . . . . . .
microvolt, ac
pVdc
. . . . . . . . . .
microvolt, dc
pVpk
. . . . . . . .
microvolt, peak
pVpp
. . . . . . .
microvolt, peak-
semiconductor
device)
to-peak
NC
. . . . . . . . . .
no connection
N/C
. . . . . . . .
normally closed
N/O
..........
normally open
NOM
. . . . . . . . . . . . . .
nominal
NORM
. . . . . . . . . . . . .
normal
NPN
. . . . . .
negative-positive-
NPO
. . . . . . .
negative-positive
negative
zero (zero tempera-
ture coefficient)
NRFR
. . . . .
not recommended
for field replacement
NSR
. . . . . . . . .
not separately
replaceable
ns
. . . . . .
. .
nanosecond
nW
. . . .
nanowatt
OB0
. . . .
order by description
. . . .
OD
. .
outside diameter
OH
..............
oval head
OP AMPL
.......
operational
OPT
. . . . . . . . . . . . . . . .
option
OSC
.............
oscillator
ox .........
amplifier
list)
PAM
........
pulse-amplitude
modulation
PC
...........
printed circuit
PCM
. . . .
pulse-code modula-
tion; pulse-count
modulation
PDM
.........
pulseduration
modulation
pF
. . . . . . . . . . . . . . .
picofarad
negative
PIV
.....
peak inverse voltage
PL
. . . . . . . . . . . . .
phase lock
PLO
. . . .
phase lock oscillator
...................
pk
peak
POLY
. . . . . . . . . .
polystyrene
PORC
. . . . . . . . . . . .
porcelain
used in parts list)
p-p
. . . . . . . . . . .
peak-to-peak
PP
. . . . . .
peak-to-peak (used
PREAMPL
......
preamplifier
frequency
PRR
. . . .
pulse repetition rate
PT
. . . . . . . . . . . . . . . . . .
point
PTM
. . . . . . . . . . . .
pulse-time
PWM
. . . . . . . . . . .
pulse-width
ps
...
. . .
picosecond
modulation
modulation
PWV
..........
peak working
voltage
. . . . . . . . . .
resistance-
capacitance
RECT..
............
rectifier
interference
RH
. . .
round head; right hand
RLC
.............
resistance-
inductance-
capacitance
RMO
.......
rack mount only
rms
. . . . . . .
root-mean-square
RND
. . . . . . . . . . . . . . . .
round
ROM
.....
read-only memory
RBP
.........
rack and panel
R W
. . . . . . .
reverse working
S
. . . . . .
scattering parameter
...I
. . . . .
second (plane angle)
S-B
........
slow-blow (fuse)
SCR
.......
silicon controlled
SE
...............
selenium
SECT
. . . . . . . . . . . . .
sections
SEMICON
....
semiconductor
SHF
....
superhigh frequency
SI
. . . . . . . . . . . . . . . . . .
silicon
SIL..
. . . . . . . . . . . . . . . .
silver
SL
...................
slide
SNR
....
signal-to-noise ratio
SPDT
..........
single-pole,
double-throw
SPG
. . . . . . . . . . . . . . . .
spring
voltage
(used
in parts list)
rectifier; screw
SS
. . . . . . . . . . .
Service Sheet
SSB
. . . . . . . .
single sideband
SQ
. . . . . . . . . .
SWR
. . . .
standingwave ratio
SYNC
. . . . . . . . . .
synchronize
T
. . . . .
timed (slow-blow fuse)
TA
. . . . . . . . . . . . . . .
tantalum
TC
. . . . . . . . . . . .
temperature
compensating
NOTE
All abbreviations in the parts list will be in upper-case.
MULTIPLIERS
Abbreviation
T
G
M
k
da
d
m
n
P
f
a
C
P
Prefix
tera
gigs
mega
kilo
deka
deci
centi
milli
micro
nano
pic0
femto
atto
Multiple
1 0 ' 2
1 09
106
103
10-1
10-2
10-3
10-6
10-9
10-12
lo+
10-18
10
TD
. . . . . . . . . . . . . .
time delay
TERM
. . . . . . . . . . . . .
terminal
TFT
. . . . . .
thin-film transistor
TGL
. . . . . . . . . . . . . . . .
toggle
TI
.................
titanium
TOL
. . . . . . . . . . . . .
tolerance
TSTR
......
logic
TV
. . . . . . . . . . . . . . .
television
TVI
. . . .
television interference
TWT
. . . . .
traveling wave
tube
U
........
micro
(used
in parts list)
. . .
microfarad (used in
parts list)
UHF
.....
ultrahigh frequency
UNDEF
..........
undefined
U N KEG
........
unregulated
VA
. . . . . . . . . . . . .
voltarnpere
Vac
. . . . . . . . . . . . . . .
volts, ac
VAR
. . . . . . . . . . . . . .
.variable
VCO
......
voltage-controlled
oscillator
(used
in
parts list)
oscillator
V(F)
. . . . . . . . . . .
volts, filtered
VFO
......
variable-frequency
VHF
.....
very-high frequency
Vpk
. . . . . . . . . . . .
volts, peak
V p p
.....
volts, peak-to-peak
Vrms
. . . . . . . . . . . .
volts, rms
VTO
. . . . . . . . . . .
voltage-tune
V N M
. . . . . . . . .
vacuum-tube
V(X)
. . . . . . . . .
volts, switched
w
....................
wan
W/
. . . . . . . . . . . . . . . . . . .
with
oscillator
voltmeter
voltage
WW
. . . . . . . . . . . .
wirewound
W/O
. . . . . . . . . . . . . . .
without
YIG
. . . . . .
yltrium-iron-garnet
2,
. . . . . . . . . . .
characteristic
impedance
6-4
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