5
Displays and Indicators
Displays and Indicators
SpO
2
Display
The SpO
2
display is the upper numeric display (identified by the
%SpO
2
symbol). This 3-digit
light-emitting diode (LED) display shows the current oxygen saturation percentage.
Pulse Rate Display
The Pulse Rate display
is the lower numeric display (identified by the
symbol). This 3-digit
LED display shows the pulse rate in pulses per minute.
Pulse Quality Display
The Pulse Quality display (identified by the
symbol) is a tricolor LED that blinks once for each
detected pulse. The Pulse Quality display changes color to indicate changes in the pulse
waveform signal that may affect the SpO
2
data. It may blink green, amber or red.
•
Green
indicates a good pulse strength signal.
•
Amber
indicates a marginal pulse strength signal. To improve signal quality, reposition the
sensor, try a different sensor type, reduce patient movement, or improve the site’s circulation.
•
Red
indicates an inadequate pulse strength signal. While the Pulse Quality display is red,
SpO
2
and pulse rate values are not updated. After about 10 seconds, the values are replaced
with dashes, indicating that readings are not possible.
Low Battery Indicator
When batteries are critically low, the digital displays will go blank, and the Pulse Quality display
will blink amber or red, but not green. After 10 minutes at critically low battery capacity, the pulse
oximeter will shut off automatically.
Sensor Fault or Inadequate Signal Display
If the device determines that a sensor fault exists (a sensor disconnect, failure, misalignment or
incompatibility with the monitor) or if a pulse oximeter sensor signal is no longer detected, a dash
(-) appears in the leftmost position of the SpO
2
display. The readings that are displayed will freeze
for 10 seconds if the pulse oximeter sensor fault or the inadequate signal continues.
If the sensor fault or the inadequate signal is not corrected, the frozen readings and the dash in
the leftmost position will be replaced by dashes in the middle of both the SpO
2
and the Pulse Rate
displays after 10 seconds.
When the sensor fault or the inadequate signal is corrected, the SpO
2
and pulse rate displays will
return to normal operation.
