User's Manual Part 2

4-7
4.3. Alarm Functionality
4.3.1. Alarm Condition Delay
Unless specified for a particular alarm condition visual and audible alarms at the 3880 monitor
will be triggered within 1 second of the initial alarm condition measurement.
The average additional delay time to indicate a 3880 Monitor alarm at the optional 3885-T
Remote Tablet is 1 additional second or less.
! CAUTION
• In situations where there is poor radio communication a COMM LOSS message will
display within 2 seconds and the Remote Tablet display Vital Signs numerics all display
“- - -“. During COMM LOSS, the 3885-T Remote Tablet may not reflect the current
status or alarms on the 3880 MRI patient monitor, however the 3880 Monitor unit will
maintain proper function with all alarm capability operational.
4.3.2. Alarm Latching
The factory default setting for all alarms is unlatched. When a user enables latched alarms the
alarm indication remains even after the alarm condition resolves. Latching of alarms occurs
only for vital signs limits violations. To acknowledge and silence the audible alarm, press the
Alarms Silence key once momentarily, however the tri-color dome light and vital signs numeric
value and associated waveform will continue visually indicating limits violation until the vital sign
returns to within limits.
4.3.3. Multiple Overlapping Alarms
When there are multiple simultaneous alarms, the monitor’s audible and Tri-Color Dome Alarm
Light Indicators will adopt the highest priority alarm that is currently present. Any vital sign
numerical value or waveform that is in an alarm condition will flash simultaneously.
! WARNING
• When the Alarm Silence button is pressed during multiple alarm conditions it will silence
all alarms, whether limit violations or alert/messages.
The Alarm Priority hierarchy ranked from most important to least is as follows:
1. Physiological Vital Sign High Priority
2. Technical High Priority
3. Physiological Vital Sign Medium Priority
4. Technical Medium Priority
5. Physiological Low Vital Sign Priority
6. Technical Low Priority