A&D FZ-1200CT, Инструкция по эксплуатации

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9-13 Statistical Calculation Mode
The statistical calculation mode statistically calculates the weight data, and displays or outputs the
results. To use the statistical calculation mode, set the "Application function (
apf )" parameter of
“Application ( ap fnc )” in the function table to “ 2 ”, as described below.
Statistical items available are number of data, sum, maximum, minimum, range
(maximum-minimum), average, standard deviation, coefficient of variation and relative error. What
statistical items to output can be selected from the four modes in the function table.
The wrong data input can be canceled by the key operation, if immediately after the input.
Turning the balance off will delete the statistical data. (Turning the display off using the
ON:OFF key will not delete the data.)
The standard deviation, coefficient of variation and relative error are obtained by the equation below:
Standard deviation=
Standard deviation
Coefficient of variation (CV)=
Average
Maximum value - Average
Relative error of maximum value =
Average
Minimum value - Average
Relative error of minimum value =
Average
9-13-1 Getting Started
Switching to the Statistical Function Mode (Changing The Function Table)
1 Press and hold the SAMPLE key until
of the function table is displayed, then release the
key.
2 Press the SAMPLE key several times to display
.
3 Press the PRINT key to display
.
4 Press the RE-ZERO key several times to display
.
To select statistical items to output, go to step 5.
To store the statistical function mode setting, go to
step 7.
To disable the statistical calculation mode, press the
RE-ZERO key to select .
where Xi is the i-th weight data,
N is number of data.
x 100 (%)
x 100 (%)
x 100 (%)
To store the setting,
go to step 7.
To select statistical
items to output,
go to step 5.
Press and hold
Press several times
Press several times