Nellcor Oximax NPB-40, Руководство по обслуживанию

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Technical Discussion
NPB-40 77
Reads Through Motion
The NPB-40 takes advantage of increased micro processing power with advanced
mathematical algorithms.
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advanced signal processing allows the NPB-40
to read through challenging motion conditions to deliver accurate saturation and
pulse rate values. For a definition of motion, as applicable to the NPB-40, contact
Nellcor's Technical Services Department.
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Technology
The NPB-40 is designed to use Nellcor brand O
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sensors containing O
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technology. These O
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sensors can be identified by the deep blue color of their
plug. All O
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- compatible sensors contain a memory chip carrying information
about the O
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sensor which the NPB-40 needs for correct operation, including
the O
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sensor’s calibration data, model type, troubleshooting codes, and error
detection data. This unique oximetry architecture enables several new features
with the NPB-40.
When an O
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- compatible sensor is connected to the NPB-40, the NPB-40 first
reads the information in the O
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sensor memory chip, checks it to make sure
that there are no errors, and then loads the data to begin monitoring. As the
NPB-40 reads the information, it flashes the
Data In-Sensor
icon. This process
takes a couple of seconds. Once the reading process is complete the NPB-40
begins monitoring.
Pulse Oximeters containing O
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technology, including the NPB-40, use
calibration data contained in the O
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sensor in calculating the patient’s SpO
2
.
Block Diagram Theory
This section provides an explanation of NPB-40 block diagram theory of
operation. Schematic diagrams and are provided at the end of this section.