1-35
IM 253710-01E
Functions
1
Averaging «For procedures, see section 10.5.»
The numerical data can be exponentially averaged using a specified attenuation
constant. This function is useful when the numerical display is fluctuating and is hard to
read such as when the fluctuation of the power supply or load is large or when the
frequency of the input signal is low. The averaging is performed according to the
following equation.
D
n
=
(M
n
– D
n–1
)
K
D
n–1
+
D
n
: Displayed value at the nth time that has been exponentially averaged. (The
displayed value D
1
on the first time is M
1
.)
D
n–1
: Display value at the n–1 time that has been exponentially averaged.
M
n
: Measured data at the nth time.
K : Attenuation constant (Select 2, 4, 8, 16, 32, or 64)
Phase Difference «For procedures, see section 10.6.»
The display format of the phase difference of the voltage and current can be selected.
With the reference axis set to zero degrees, one format displays the phase difference
using 360
°
in the clockwise direction, and the other format displays an lead of 180
°
in the
counter-clock wise direction and a lag of 180
°
in the clockwise direction.
1.7 Numerical Computation
