Stat Fax 303 Plus, Руководство оператора

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28 Stat Fax 303 Plus Operator’s Manual Rev. J Awareness Technology, Inc.
You may use the “END” function at this time to read only part of a strip by following the
instructions in section 2.1.10 - Selecting an END location. Load the carrier and press the READ
key. The instrument will then begin to read the first strip and print the results, labeling the
controls as “NC” or “PC”.
NOTE: All controls plus the blank must fit into 8 wells. If more are entered, “Too many
controls”, and “TEST ENDED” will print and the mode will cancel.
After the first strip is read, the display shows “C/O Abs OK Y/N” . If the cutoff absorbance value
is acceptable, press YES. “C/O Abs is stored” will print. If the cutoff absorbance value is not
acceptable, press NO. If the test is stored, the display will show “Recall test Y/N” . If the test is
not stored, the display will show “Re start Y/N” . In either case, press YES to run the test again,
press NO to return to the “C/O Abs OK Y/N” prompt, or press the CLEAR key twice to cancel
the mode.
The instrument will be ready for the next strip when it displays “Set Carrier” “Then Press
Enter” . To continue reading in the C/O Control mode, load the next strip and press the ENTER
key.
If you want to store this test in your user-test menu, be sure to store it prior to canceling (see
section 2.3.1-Storing a Test). Press the CLEAR key twice to cancel the mode.
2.2.4 Regression Mode
Press the MULT key (multi-point modes) to access the regression mode. “Regression Y/N” will
be displayed. Answer YES.
This mode calculates a best fit linear equation based upon the standard points. It is designed for
use with either linear, logarithmic, or log-logit data, with absorbance on the y-axis and
concentration on the x-axis.
After filter selection, you are prompted to select your axes type. There are five possible formats:
Linear, Log Abs, Log Conc, Log/Log, and Log/Logit. The first choice displayed is
“Linear Y/N” ,
where both the absorbance data (y) and the concentration data (x) are linear. Press YES to
select, NO to continue. Next is
“Log Abs Y/N” where the natural log of the absorbance*1000 is
plotted against the concentration. Note that in logarithmic calculations, resulting concentrations
will be the same no matter what logarithmic base is used (ln or log), but slopes and intercepts
will vary. Press YES to select, NO to continue. Next is
“Log Conc Y/N” , where absorbance is
linear and concentration is logged. Press YES to select, NO to continue. Next is “Log/Log Y/N” ,
where the log is taken of both absorbance*1000 and concentration. Press YES to select, NO to
continue. Next is
“Log/Logit Y/N” , where a log/logit calculation is done. The first calibrator must
be the 0 calibrator (instrument assigned), and have the darkest absorbance of all the calibrators.
Press YES to select, NO to recycle the options.
After the blank and duplicate selections, the display prompts for the number of calibrators to be
used by displaying “# of Cals = ”. The number of calibrators must be less than or equal to eight
(seven with a blank). The display then prompts for unit selection.