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A
or
amp
ampere
hf
high frequency
(+) or
pos
positive
ac
alternating current
Hz
hertz
pot
potentiometer
af
audio frequency
!C
integrated
circuit
p-p
peak-to-peak
a/d
analog-to-digital
if
intermediate
frequency
ppm
parts
per
million
assy
assembly
in
inch{es)
PROM
programmablle
read-only
AWG
american
wire
gauge
inti
internal
memory
B
bel
I/O
input/output
psi
pound-force
per
square
inch
bed
binary
coded
decimal
k
kilo
(10
3
)
RAM
random-access
memory
°C
Celsius
kHz
kilohertz
rf
radio
frequency
cap
capacitor
kQ
kilohm(s)
rms
root
mean
square
ccw
counterclockwise
kV
kilovolt(s)
ROM
read-only
memory
cer
ceramic
If
low frequency
s
or
sec
second
(time)
cermet
ceramic
to metal(seai)
LED
light-emitting
diode
scope
oscilloscope
ckt
circuit
LSB
least significant
bit
SH
shield
cm
centimeter
LSD
least significant digit
Si
silicon
cmrr
common
mode
rejection
ratio
M
mega
(10
6
)
semo
serial
number
comp
composition
m
mi
111
(10~
:i
)
sr
shift
register
cont
continue
mA
milliampere(s)
Ta
tantalum
ert
cathode-ray tube
max
maximum
fb
terminal
board
cw
clockwise
mf
metal
film
tc
temperature
coefficient
or
d/a
digital-to-analog
MHz
megahertz
temperature
compensating
dac
digital-to-analog
converter
min
minimum
fexo
temperature
compensated
dB
decibel
mm
millimeter
crystal oscillator
dc
direct
current
ms
millisecond
tp
test
point
dmm
digital
multimeter
MSB
most
significant
bit
U
OX
V
micro
(10*
c
)
dvm
digital
voltmeter
MSD
most
significant
digit
uhf
ultra
high frequency
elect
electrolytic
MTBF
mean
time
between
failures
us
or
/vs
microsecond
(s)
(10'
6
)
ext
external
MTTR
mean
time
to
repair
uuf
unit
under
test
F
farad
mV
millivolt(s)
V
volt
°F
Fahrenheit
mv
multivibrator
V
voltage
FET
Field-effect transistor
MO
megohm(s)
var
variable
If
flip-flop
n
nano
(10-*)
vco
voltage controlled
oscillator
freq
frequency
na
not applicable
vhf
very high frequency
FSN
federal
stock
number
WC
normally closed
vlf
very low
frequency
g
gram
(-)
or
neg
negative
W
watt(s)
G
giga (io
9
)
NO
normally
open
ww
wire
wound
gd
guard
11
s
nanosecond
xfmr
transformer
Ge
germanium
opnl
ampi
operational
amplifier
xstr
transistor
GHz
gigahertz
P
pico
(10-'
2
)
xtal
crystal
gmv
guaranteed
minimum
value
para
paragraph
xtlo
crystal oscillator
gnd
ground
peb
printed
circuit
board
0
ohm(s)
H
henry
pF
picofarad
A
micro
(
10
-
a
)
hd
heavy duty
pn
part
number
7-2
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