FUNCTIONAL DESCRIPTION
9-28 Sysmex KX-21 Operator’s Manual -- Revised October 1998
7. ELECTRIC SYSTEM
The microprocessor in the main unit controls the hydraulic system's solenoid valves and
master valves, thus regulating the flow of samples, reagents, and waste in the hydraulic
system.
Electric signals received from various transducers go through the analogue circuit for
electrical waveform-processing, and to the microcomputer. The microcomputer converts the
analogue signals into digital signals for the calculation.
The WBC, RBC, and PLT cell signals are sent to the respective waveform-processing
circuits in the analogue circuit, where the noise in signals is eliminated to acquire the required
cell signals only. The microcomputer converts the A/D-converted cell signals into particle
distribution data, and outputs them to the built-in printer or to the host computer (optional).
To calculate HGB, absorbance of only the diluent (background) is deducted from samples'
absorbance. The beam that has passed through the fluid is detected by the photo diode. And
the signals is photoelectrically converted, A/D converted, and then sent to the HGB counting
circuit for the calculation of the absorbance.
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