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Recorder Mode
•INT (Integration) and DINT (Double Integration)
Perform the same functions as an integration amp (DC is not integrated).
• SIN (Sine) and COS (Cosine)
The result of a SIN or COS operation is displayed within the range of -1 and
+1. The angle is calculated in the counter-clockwise direction for positive
values or the clockwise direction for negative values.
• ASIN (Arc Sine), ACOS (Arc Cosine), and ATAN (Arc Tangent)
If the absolute value of the target data of an ASIN or ACOS operation is 1 or
more, any value equal to +1 or higher is processed as +1 and any value equal
to -1 or lower is processed as -1. For ASIN, ACOS, and ATAN operations, the
calculated result is displayed as an angle (RAD) ranging from –π/2 to +π/2.
• INTA (Integration) and DINTA (Double Integration)
Integration and double integration operations use a trapezoidal formula. With a
trapezoidal formula, the average of the target point and its previous point is
multiplied by Delta t to obtain the area, after which all the data preceding the
target point are added.
• Regarding the permissible numeric range
If a calculation results in a numeric value (absolute value) that is lower than
1.17 x 10-38 or higher than 1.7 x 1038, an underflow or overflow state will
occur and that value will be rounded off to the closest limit value or to zero.
Number of means :
This parameter sets the number of means for Mean calculation.
Lower - SPAN - Upper Unit:
This parameter can only be set for those channels for which Function is On.
SPAN settings can be performed for those channels that were set to On for
Calculation settings.
Execute .......................... Executes the details set for Arithmetical Calculation.
(3) FFT Calculation ........ Performs FFT calculation on the cursor-specified data. If you select FFT
Calculation, the mode will switch to FFT mode. Please make the settings in the
Record Settings window. (Please refer to Chapter 4, FFT Mode for details.)
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