Nonin Avant 4100 Operator's Manual page 16

Indicators and Icons
Main Alarm LED
This LED indicates all alarm conditions. For high priority (patient)
alarms, the indicator is displayed in red, blinking fast. For medium
priority alarms, the indicator is displayed in amber, blinking slowly.
Pulse Quality LED
This LED blinks to indicate a poor pulse signal. If there is a sustained
period of poor quality signals, this LED will illuminate steadily.
Pulse Oximeter Sensor LED
This LED indicates when a sensor has become disconnected, has
failed, or has not been applied correctly.
Pulse Strength Bargraph LED
This 10-segment tricolor bargraph indicates pulse strength as
determined by the oximeter. The height of the Pulse Strength
Bargraph LED is proportional to the pulse signal, and the color is
determined by pulse strength:
Green = a good pulse strength
Amber = a marginal pulse strength
Red = a low pulse strength, high priority alarm
When displaying battery charge, this LED indicates charge in 10%
increments in green, displaying the depleted portion in amber.
Alarm Silence LED
This amber LED indicates that the audible alarm is silenced for two
minutes when it blinks. When lit steadily, the Alarm Silence LED
indicates that the audible alarm volume is set to zero.
Time, Month, Day, and Year LEDs
These amber LEDs indicate that the display unit's Time, Month, Day,
or Year displays can be reviewed or adjusted using the Plus (+) and
Minus (-) buttons.
Pulse Volume LED
This amber LED indicates that the Pulse Volume can be reviewed or
adjusted using the Plus (+) and Minus (-) buttons.
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