Awareness Technology Stat Fax 4200 Operator's Manual page 33

Regression See Section 2.5.4- In Regression mode, the instrument accepts a
number of Calibrators and calculates concentration values based on a
best-fit curve (linear regression).
Cubic Spline See Section 2.5.4– Cubic Spline Mode accepts a minimum of 3 and a
maximum of 8 calibrators and calculates concentrations based on the
Cubic Spline (constrained) calibration curve.
Calibrator materials of known concentrations are used to calibrate the
instrument so that concentrations of unknown Samples are calculated
from the generated curve. The resulting calibrator curve is a smooth
curve connecting the Calibrator points, which may be entered in
ascending or descending order of absorbance. A constraining algorithm
is applied to prevent curve overshoot.
Cut Off See Section 2.5.5 – Cut Off Mode provides Cut Off Value (COV) formula
options and Quality Control options.
Mode options are located under Manage Tests on the Main display screen. Select Create
Test and the Test Definition screen will display; select the Mode field and the list of Mode
options will display.
Each of the seven (7) modes follow the same basic pattern of options, with other variables
available for selection dependent upon the mode being used.
CAUTION! Verify mode selection matches with the test kit package
insert or manufacturer's instructions before reporting test results! Always
include normal and abnormal controls.
Stat Fax
SELECT MODE
Absorbance
Factor
Single Standard
Point to Point
Regression
Cubic Spline
Cut Off
Available Modes
CAUTION!
® 4200 Operator's Manual Doc. 4200 Rev. K
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