Fluke 8050A Instruction Manual page 47

Ti
GIVEN: Vrms
= '
V
Vi^
Where
Vi
is
the
instantaneous ac
voltage.
THEN: Vrms^
"
Vrms
=
=
antilog
(log
Vi^
)
=
antilog
(2
log
Vi
-
log
V^^^l
Vrms Vrms
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