Hioki MEMORY HiCORDER 8855, Instruction Manual

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APPENDIX 14
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Appendix 3 Reference
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Appendix 3.8 Details on Operators
i+k/2
b
i
= 1/k dt (i = 1, 2, .... n)
t=i-k/2
Σ
This section describes the operators used in waveform operation. The
parameter "bi" shows the operational result, and "di" shows the source
channel, respectively, in which "i" indicates the serial number of data.
(1) The four arithmetical operations (+, -, *, /)
According to the operators set, the four arithmetical operations are
performed.
(2) Absolute value (ABS)
bi = |di| (i = 1, 2, .... n)
(3) Exponential (EXP)
bi = exp(di ) (i = 1, 2, .... n)
(4) Common logarithm (LOG)
When di > 0, bi = log
10
di
When di = 0, bi = - (overflow value is output)
When di < 0, bi = log
10
|di| (i = 1, 2, .... n)
Use the following equation to convert to natural logarithm:
LnX = logeX = log
10
X / log
10
e
1 / log
10
e 2.33E + 0
(5) Square root (SQR)
When di >= 0, bi = di
When di < 0, bi = - |di| (i = 1, 2, .... n)
(6) Moving average (MOV)
dt: t-th data of source channel
k: number of points for averaging (1 to 4000)
1 DIV = 100 points
(7) Parallel displacement on time axis (SLI)
Shifts the value on the time axis by a certain number of points.
b
i
=
d
i - k
(i = 1, 2, .... n )
k : number of points for averaging (-4000 to 4000)
After shifting the waveform, the part right or left without source channel
data becomes 0 V. 1 DIV = 100 points