Drucker Diagnostics QBC STAR, Руководство оператора системы

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QBC STAR System Operator’s Manual
Hematological results are shown on the Liquid Crystal Display. Results are also automatically printed
by the internal thermal printer onto a 2.25-inch paper tape.
The instrument contains the following subsystems:
• The centrifuge for mixing and separating the blood sample
• An embedded microprocessor for machine control, blood sample analysis, and communications
• An internal printer for printing results
• A Liquid Crystal Display to show results, prompts, and messages
• USB ports for communication with optional external devices such as a keyboard, barcode scan-
ner, or external printer
• An ethernet connection for use with Laboratory Information Systems
Instrument Self-Testing and Calibration
When the instument is powered on and the door is closed, the system software performs a self-test
to verify proper operation (Or once every 8 hours if power is left on continuously). The self-test checks
such things as: centrifuge motor at various speeds, emission filter assembly, optics assembly, light
source, timing control, optical clarity and focus, internal printer, rotor timing, and setup keypad.
The instrument runs a built-in calibration check every time a sample is processed. Sample integrity
checks include: statistical matching of bandlengths, ratios and absolute values for signal levels, ratios
that are used to evaluate the quality of interfaces, measurement of float length, verification of optics
and sensors, measurement and evaluation of sample fill volume. Additional tests performed as part
of each assay cycle include centrifuge speed and electro-optical verification. Results are reported on
tube tests only if all verification and integrity tests pass.
The power-on self-test and sample integrity tests provide verification of instrument parameters includ-
ing but not limited to timing, speed, disposable integrity, and reagent stability.
In addition to these checks, the system monitors the temperature inside and outside the instrument
before and during each test. The system will allow operation of the instrument if the temperature is
higher than 32° C, but with limited reports. If the sample temperature exceeds 45° C, the unit will be-
come too hot to operate.
Since the QBC STAR instrument contains a centrifuge, centrifuge speed measurements are verified
each time a sample is processed.
If any part of the self-testing or calibration process fails, a message is displayed. Confirmation of the
success of self-tests is provided by the “Ready” message. In addition, each results printout indicates
the outcome of electronic QC.
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