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
t
i
k
2
---
–
=
i
k
2
---
+
=
(
i
= 1, 2, .... n)
When
k
is odd number:
bi
1
k
---
dt
t
i
k
2
---
–
1
+
=
i
k
2
---
+
=
(
i
= 1, 2, .... n)
When
k
is even number:
Summary of Contents for 8847
Page 1: ...MEMORY HiCORDER Instruction Manual 8847 December 2010 Revised edition 4 8847A981 04 10 12H ...
Page 2: ......
Page 18: ...Operating Precautions 8 ...
Page 26: ...1 4 Basic Key Operations 16 ...
Page 74: ...4 4 Waveform Observation 64 ...
Page 98: ...5 5 Managing Files 88 ...
Page 110: ...6 6 Miscellaneous Printing Functions 100 ...
Page 126: ...7 8 Seeing Block Waveforms 116 ...
Page 160: ...8 10 Making Detailed Settings for Input Modules 150 ...
Page 198: ...10 6 Numerical Calculation Type and Description 188 ...
Page 296: ...15 7 Controlling the Instrument with Command Communications LAN USB 286 ...
Page 304: ...16 2 External I O 294 ...
Page 362: ...Appendix 5 FFT Definitions A28 ...
Page 368: ...Index Index 6 ...
Page 369: ......
Page 370: ......
Page 371: ......
