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897N203029A FDC NX600 Instruction Manual 2022.01
9 Function Menu
IMPORTANT:
Description of the correlation function
FDC
NX600
Y
Y=aX+b
X
Conventional measuring method
using your instruments
This function is designed to determine the correlation
between the measured data obtained using the FDC
NX600 and the data obtained using the conventional
measuring method with your own instruments.
The X-axis shows the measured data obtained us-
ing your instruments, and the Y- axis shows the
measured data obtained using the FDC NX600.
The correlation regression equation in this case is:
Y = aX + b
After values for the two coefficients (a, b) are reg
-
istered in the analyzer memory, the FDC NX600
performs compensation calculations internally us-
ing the formula: X = (Y-b)/a. In this way, measured
data obtained using the FDC NX600 are adjusted to
match measured data that would be obtained using
your instruments.
Y
(mg/dl)
X
(mg/dl)
FDC
reference
Y=X
Y=0.98X+5
0
10
600
0
600
A
B
Measurement using your instruments
Method
In order to obtain a better correlation, it is es-
sential to exercise caution regarding the amount
of data and the sample.
1. You can configure a and b values by sam
-
ple type.
2. The correlation function is independent of
other compensation functions.
3. If values for (a, b) have already been input,
old values will not be canceled as follows. If
the old values are represented as (a1, b1),
and the new values as (a2, b2), the result-
ing values for (a, b) will be determined ac-
cording to the following formulas:
a=a1×a2
b=a1×b2+b1
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