Hioki MR8827, Instruction Manual

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Waveform Calculation Operators and Results
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
Operators ( +, −, *, / )
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
=
𝑑𝑑
𝑖𝑖
≧ 0 𝑏𝑏
𝑖𝑖
= √𝑑𝑑
𝑖𝑖
𝑑𝑑
𝑖𝑖
< 0 𝑏𝑏
𝑖𝑖
= √|𝑑𝑑
𝑖𝑖
| (𝑖𝑖 = 1, 2, … n)
When d
i
< 0 b
i
=
𝑑𝑑
𝑖𝑖
≧ 0 𝑏𝑏
𝑖𝑖
= √𝑑𝑑
𝑖𝑖
𝑑𝑑
𝑖𝑖
< 0 𝑏𝑏
𝑖𝑖
= √|𝑑𝑑
𝑖𝑖
| (𝑖𝑖 = 1, 2, … n)
Moving Average (MOV)
When k is odd When k is even
𝑏𝑏𝑏𝑏 =
1
𝑘𝑘 ∑ (𝑏𝑏=1,2, …n)
𝑖𝑖+
𝑘𝑘
2
𝑡𝑡=𝑖𝑖−𝑘𝑘2
𝑏𝑏𝑏𝑏 =
1
𝑘𝑘 ∑ (𝑏𝑏=1,2, …n)
𝑖𝑖+
𝑘𝑘
2
𝑡𝑡=𝑖𝑖−𝑘𝑘2+1
dt: tth 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 )
For k/2 data at the beginning and end of the calculation section, the places that lack
data are filled with 0s before calculation.
Parallel displacement
along the time axis
(SLI)
Moves waveforms 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
calculation result, the voltage value becomes zero. 1 div = 100 points.
Sine (SIN)
b
i
= sin(d
i
) ( i = 1, 2, .... n)
Trigonometric and inverse trigonometric functions employ radian (rad) units.
Cosine (COS)
b
i
= cos(d
i
) ( i = 1, 2, .... n)
Trigonometric and inverse trigonometric functions employ radian (rad) units.
Tangent (TAN)
b
i
= tan(d
i
) (i = 1, 2, .... n)
where −10 ≤ bi ≤ 10
Trigonometric and inverse 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 and inverse trigonometric functions employ radian (rad) units.
Arccosine (ACOS)
When d
i
> 1 b
i
= 0
When −1 ≤ d
i
≤ 1 b
i
= acos(d
i
)
When d
i
< −1 b
i
= π ( i = 1, 2, .... n)
Trigonometric and inverse trigonometric functions employ radian (rad) units.
Arctangent (ATAN)
b
i
= atan(d
i
) (i = 1, 2, .... n)
Trigonometric and inverse trigonometric functions employ radian (rad) units.