Stat Fax 303 Plus, Руководство оператора

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Awareness Technology, Inc. Stat Fax 303 Plus Operator’s Manual Rev. J 21
2.1.9 Selecting Control Options
There are two optional features that facilitate the location and analysis of controls and their
results. First, the locations of up to 3 (total) positive and negative (or high and low) controls will
be indicated on the printout, if programmed by the operator. Additionally, the operator may enter
a control acceptance range for the high control, and an upper limit for the low control. The
instrument will print the control criteria and automatically compare the resulting concentrations of
“located” controls with these limits. Control results are flagged on the printout.
Control locations and acceptance ranges are entered using the CNTRL key when “Set Carrier”
is being displayed in any mode (except the absorbance mode, cutoff mode and cutoff control
mode). The location of only one well is needed to identify a control being read in duplicate.
Control locations must be designated to make automatic comparisons to user-entered
acceptance ranges.
When you press the CNTRL key, the instrument will display “CONTROLS HI=1 LO=0” . Press
the 1 key, and then ENTER to select a positive (or high) control. Press 0, ENTER to select a
negative (or low) control. For both high and low controls, the instrument will ask for the row and
strip number or letter, by first displaying
“ROW (A-H)?” Type in the row letter, and then press
ENTER. You will see “Strip (1-12)?” Type in the strip number, and then press ENTER.
Note: If you are in the 8-well mode, the first set of wells (right-most carrier position) will
be Strip 1, row A through H. If you are in the 12-well mode, the first set of wells (right-
most carrier position) will be Row A, strip 1 through 12.
After you locate the first high control, the instrument asks for the greatest acceptable value for
the high control(s) by displaying
“HC Hi > = ” . The upper and lower values which you enter for
the positive controls will be considered within range, while values lower than the low value or
higher than the high value will be considered out of range. You must enter the limits using the
same concentration units which are used for your calibrators. Type in the upper limit and press
ENTER. Then the instrument will display
“HC Lo < ” . Type in the lower limit and press ENTER.
The instrument will then display “CONTROLS, HI=1 LO=0” again.
A total of three controls (all high, all low, or some of each) may be located. All high controls will
be compared to the range you entered for the first high control. For low controls, there is only an
upper limit. The message
“LC HI > =” will be displayed to prompt for the value above which the
low control will be considered too high. When you have finished entering controls, press ENTER
again to return to the
“Set Carrier” prompt.
If control locations are entered for wells that have been reserved for either the blank or
calibrators, then the blank and calibrator indicators will override positive and negative control
indicators when the sample identifications are printed.
“H” , “L” , or no flag are used to indicate
high, low, or in range respectively.
If your test is stored, the locations and acceptance criteria of the controls entered will also be
stored for later recall.