Hioki 8847 - 13.2 Operation Workflow

11.3 Waveform Calculation Operators and Results
198
11.3 Waveform Calculation Operators and
Results
b
i
: ith member of calculation result data, d
i
: ith member of source channel data
Waveform Calculation Type Description
Four Arithmetic Opera-
tors ( +, -, *, / )
Executes the corresponding arithmetic operation.
Absolute Value (ABS)
b
i
= | d
i
| (i = 1, 2, .... n)
Exponent (EXP)
b
i
= exp(d
i
) (i = 1, 2, .... n)
Common Logarithm
(LOG)
When d
i
> 0 , b
i
= log
10
d
i
When d
i
= 0 , b
i
= - (overflow value output)
When d
i
< 0 , b
i
= log
10
| d
i
| (i = 1, 2, .... n)
Note: Use the following equation to convert to natural logarithm calculations.
LnX = log
e
X = log
10
X / log
10
e
1 / log
10
e ≈ 2.30
Square Root (SQR)
When d
i
≥ 0 , b
i
=
When d
i
< 0 , b
i
= - (i = 1, 2, .... n)
Moving Average (MOV)
dt: t
th
member of source channel data
k : number of points to move (1 to 5000)
1 div = 100 points.
k is specified after a comma.
(Ex.) To make Z1 the moving average of 100 points: MOV(Z1,100
)
Slides waveform data
along the time axis (SLI)
Moves along the time axis by the specified distance.
b
i
= d
i
− k (i = 1, 2, .... n)
k : number of points to move (-5000 to 5000)
k is specified after a comma.
(Ex.) To slide Z1 by 100 points along the time axis: SLI(Z1,100
)
Note: When sliding a waveform, if there is no data at the beginning or end of the calcula-
tion result, the voltage value becomes zero. 1 div = 100 points.
Sine (SIN)
b
i
= sin(d
i
) (i = 1, 2, .... n)
Trigonometric functions employ radian (rad) units.
Cosine (COS)
b
i
= cos(d
i
) (i = 1, 2, .... n)
Trigonometric functions employ radian (rad) units.
Tangent (TAN)
b
i
= tan(d
i
) (i = 1, 2, .... n)
where -10
≤ b
i
≤ 10
Trigonometric functions employ radian (rad) units.
Arcsine (ASIN)
When d
i
> 1, b
i
= π / 2
When -1
≤ d
i
≤ 1, b
i
= asin(d
i
)
When d
i
< 1, b
i
= - π / 2
Trigonometric functions employ radian (rad) units.
8
d
i
d
i
bi
1
k
---
dt
ti
k
2
---
–=
i
k
2
---
+

=
(i = 1, 2, .... n)
When k is odd number:
bi
1
k
---
dt
ti
k
2
---
–1+=
i
k
2
---
+

=
(i = 1, 2, .... n)
When k is even number: