List of
Abbreviations and
Symbols
A
or
amp
ampere
hf
high frequency
(
f)
or
pos
positive
ac
alternating current HZ
hertz pot
potentiometer
at audio
frequency 1C
integrated circuit
p.p
peak-to-peak
a/d
anaiog-to-digitai
if
intermediate frequency
ppm
parts per
million
aasy aasembly
In inch(es)
PROM programmablle read-only
AWG american wire gauge inti
internal
memory
B Pel I/O
input/output 0Sl
pound-force per square
inch
bed binary coded decimal k
kilo (10=) RAM
random-access
memory
‘>C Celsius
kHz kilohertz rf
radio frequency
cap capacitor
kO kilohm(s) rms
root mean square
CCW counterclockwise
kV kilovoll(s) ROM
read-only memory
cor corarnic
If low frequency s or sec
second (time)
cermet ceramic to metai(seai)
LED light-emitting diode scope
oscilloscope
ckt circuit
USB
least significant bit SH
Shield
cm centimeter LSD
least significant digit SI
silicon
cmrr common mode rejection ratio M
mega
(10'"')
serno serial
number
comp composition m
milli (10-'’) sr Shift register
com continue mA
milliampere(a)
Ta tantalum
cri cathode-ray
tube
max maximum tb
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
texo
temperature compensated
dB
decibel
mm millimeter
crystal oscillator
dc direct current
ma millisecond
tp
test point
dmm
digital
multimeter MSB most significant bit
u
orp
micro
(10"'‘)
dvm
digital voltmeter
MSD most significant digit
uhf ultra high frequency
elect electrolytic MTBF
mean
time between
failures
us
er
microsecond(s)
(10*")
ext
external
MTTR mean time to repair uut
unit
under test
F
farad
mV
millivoltls) V volt
Fahrenheit mv multivibrator
V voltage
F6T
Field-effect traneistor
MG megohm(s) var
variable
fl flip-flop n
nano
(10'»)
vco
voltage controlled
oscillator
freq frequency na not applicable
vht very high frequency
FSN
federal
stock number NC normally closed
vlf very low frequency
g
gram
(-)
or neg negative w
watt(s)
0
giga (tO*)
NO normally open ww
wire
wound
gd guard ns nanosecond xfmr
transformer
Ge germanium opnl ampi operational amplifier xstr
transistor
GHz gigahertz
P
pico
(10"')
xtal
crystal
gmv guaranteed minimum value para
paragraph
XtIO
crystal oscillator
gnd
ground peb
printed circuit board
o ohm(s)
H henry pF picofarad
u
micro (lO''')
hd
heavy duty pn part number
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