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Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
book

Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition

by John G. Webster, Halit Eren
February 2014
Intermediate to advanced content levelIntermediate to advanced
1921 pages
82h 13m
English
CRC Press
Content preview from Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
42-21Frequency Measurement
should be connected to the FC’s external time base input. Frequency accuracy can be estimated by using
Eq
uation
42.1, wh
ere
f
meas
is the reading taken from the FC display. e smallest frequency oset that an
FC ca
n
de
tect
wi
th
a si
ngle
re
ading
wi
ll
be de
termined
by it
s
re
solution,
wh
ich
is li
mited
by th
e
nu
mber
of di
gits
on th
e
co
unter’s
dis
play
. Fo
r
ex
ample,
a 10
-digit
FC wi
ll
be una
ble
to de
tect
a fr
equency
cha
nge
sma
ller
tha
n
1 × 10
−9
without averaging when measuring a 10 MHz signal, but a 12-digit counter can
re
duce
th
is
va
lue
by tw
o
or
ders
of mag
nitude
to 1 × 10
−11
.
TI
Cs
ar
e
co
mmonly
us
ed
to me
asure
fr
equency
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Publisher Resources

ISBN: 9781439848913