TruSat User’s Guide
3–2
Alarm signals
An alarm condition generates audible and visual signals according to the alarm priority.
When an alarm condition occurs, the backlight switches ON (if OFF) until the alarm
condition ends. All audible and visual alarm signals are cleared when the alarm condition
ends.
Priority Alarm LED Audible signal Alarm description
The sensor is off, not attached, or the
monitor is unable to measure the signal.
Dashes are displayed.
SpO
2
value flashes; measurement
matched or exceeded an alarm limit.
System error or sensor error. Message
and error number are displayed.
High Red ON or
flashing ON/OFF
Continuous tone or five
beeps (beep-beep-beep,
beep-beep with falling
tone) twice every
10 seconds.
The battery is completely depleted.
Pulse rate value flashes; measurement
matched or exceeded an alarm limit.
Medium
Yellow flashing
ON/OFF
Three beeps (beep-beep-
beep with falling tone)
every 20 seconds.
Battery is low. Battery indicator flashes
ON/OFF.
Signals for multiple alarms
During multiple alarm conditions, the visual and audible alarm signals always indicate
the highest priority alarm. For example, if a medium priority alarm is present when a
high priority alarm occurs, the high priority alarm signals replace the medium priority
alarm signals.
Signals for silenced alarms
When you press the Alarm Silence button to silence one or more alarms, the alarm LED
indicates the highest priority alarm condition. All other visual alarm indicators (flashing
value, dashed display, etc.) are displayed until the alarm condition ends.
If no alarms are present when you press the Alarm Silence button, the alarm LED is lit
yellow to indicate upcoming alarms will be silenced. If an alarm condition occurs while
alarms are silenced, the alarm LED indicates the priority of the alarm. All other visual
alarm indictors are displayed until the alarm condition ends.
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