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Temperature Software Module - Philips M3001A Service Manual

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Temperature and Invasive Blood Pressure (Temp/Press) measurement
Acquisition Control
This component receives the hardware-related information from the signal acquisition
component. This includes status data and error/failure reports.
Wave Processing
The raw waveform from the Signal Acquisition module is filtered. Gain and offset values of
the raw waveform are corrected so that the wave sample-values represent absolute values
according to the selected scale.
Beat Detector
The Beat Detector determines the position of a beat in the pulsatile pressure waveform. This
information is used to calculate systolic, diastolic, and mean beat pressure values and to
calculate pulse rate.
Average Calculation
The calculated beat pressure and pulse values are averaged and converted to the user-selected
measurement unit (mmHg or kPa).
Pressure Alarming
This component generates the appropriate alarm when the averaged pressure or pulse values
exceed the user-selected alarm limits. Technical alarms are generated when the Acquisition
Control component detects errors or failures.
Pressure/Pulse User Controls
This component controls the user-selected settings:
• Change the pressure units (mmHg/kPa)
• Change the pressure and pulse-rate alarm limits
• Select the input filter
• Start zero and calibration procedures
• Select the scale of the displayed wave
• Select the displayed pressure label

Temperature Software Module

The Temperature module derives a temperature value from a YSI series 400 thermistor
temperature probe. The temperature label is selectable and temperature-related alarm limits
can be set. An alarm message is displayed when the measured temperature is outside the set
range or outside the measurement range.
Introduction to the Instrument


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