Nellcor N-560 User manual

Introduction

This addendum applies to the Nellcor OXIMAX® N-560 Pulse
Oximeter monitor, and provides supplemental information to
instructions found in the Nellcor O
Operator’s and Service manuals. This addendum is divided into the
following major topics:

•Safety

•Alarms

• Range of Peak Wavelengths and Maximum Output

• Data Update Period, Effect Of Data Averaging, and Other

• Test Considerations and Oximeter Accuracy

•Compliance

Safety

Sensor LED light output falls within Class 1 level, according to IEC
60825-1:2001. No special safety precautions are required.

N-560 1Addendum to Monitor Instructions

XIMAX N-560 Pulse Oximeter

Power

Signal Processing

Alarms

The default lower SpO2 alarm limit (in Neonatal mode only) is 80%,
however, institutions may reset this default limit to a greater value
by following the information in the O

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XIMAX N-560 Service Manual.

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Addendum to Monitor Instructions

Range of Peak Wavelengths and Maximum Output Power

Electrical/Optical Specifications

Nellcor pulse oximetry sensors contain light emitting diodes (LEDs)
that emit red light at a wavelength of approximately 660 nm and
infrared light at a wavelength of approximately 900 nm. The total
optical output power of the sensor LEDs is less than 15 mW. This
information may be useful to clinicians, such as those performing
photodynamic therapy.

Data Update Period, Effect Of Data Averaging, and Other Signal Processing

There are various matrices within the N-560 algorithm. Some of
these are used to assess the severity of conditions presented to the
N-560 measuring SpO
individual matrices or combinations of these matrices are used to
drive the LED indicators on the N-560 front panel.

The advanced signal processing in the algorithms automatically
extends the amount of data required for measuring SpO
rate depending on the measuring conditions. During normal
measurement conditions, the averaging time is six to seven
seconds (approximately three seconds in Fast Mode). The N-560
automatically adjusts the signal processing during degraded
conditions such as those caused by low perfusion, interference,
(e.g. external interference such as ambient light, electromagnetic
interference, and patient motion), or a combination of these, which
results in an increase in the dynamic averaging beyond the
minimum as set by the response mode. (Refer to the N-560
Operator’s Manual for more information on Setting the Response
Mode.) If the result of the dynamic averaging time exceeds 20
seconds for SpO
and the SpO

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and pulse rate will continue to be updated every

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second. As these conditions extend, the amount of data required
continues to increase. If the dynamic averaging time for SpO
reaches 40 seconds, and/or 50 seconds for Pulse Rate, a low priority
alarm state results: The pulse search indicator begins flashing, the

and pulse rate on a patient. These

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and pulse

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, the PULSE SEARCH indicator is illuminated solid,

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