Welch Allyn Medical Diagnostic Equipment Medical Alarms 8.1x Manual Do Utilizador

Directions for use

Chapter 11   Specifications

Acuity System alarm and alert indications

Numeric update time after Acuity 
System receives alarm indication from 
a patient’s monitor 

Within 1 s 

Acuity Central Station tone volume 

Installation choice (hourly settings) 

Audible alarm or alert tone delay time 
to patient’s monitor 

10 s (configurable up to four minutes, 15 seconds) 

Audible alarm or alert tone 
suspension time and activation 

90 s, activated individually for each patient 

Note, frequency range and pause 
length for different types of tones

Monitor equipment alerts: 1 A

4

 @ 440.0 Hz, pause 2.45 s 

Low-level alarms: 3 E

5

 @ 660.0 Hz (1 s apart), pause 1.25 s 

Medium-level alarms: 1 A

5

 @ 880.0 Hz coupled with 1 C#

5

 @ 554.0 Hz, 

pause 0.5 s 

High-level alarms: 3 A

5 

@ 880.0 Hz, pause 5/6 s 

Lethal alarms: 4 A

5

 @880.0 Hz with harmonics, pause 0.8 s

Latched alarms

Visual latching: When feature enabled, the most recent, highest-priority 
arrhythmia alarm latches in the Waveform Window, even after alarm condition 
ceases. Can be configured to apply to lethal/high-level or lethal/high-level/
medium-level arrhythmia alarms. 

Audible latching: Lethal arrhythmia events can be configured to also latch 
audibly. Audio tone latching default is off.

Indications remain until 
condition is cleared or 
alarm is turned off. 

If latched alarm 
capability is enabled, 
lethal and high-level 
arrhythmia alarms (and 
medium-level arrhythmia 
alarms if so configured) 
persist in Waveform 
Windows until cleared 
at Central.

Indications remain until the 
condition is cleared or the 
alert is acknowledged 
(disabled) at the patient 
monitor (some alerts do not 
allow acknowledgement). 

Certain wireless alerts can 
be RESET at the Acuity 
Central Station. 

Indications remain until condition 
is cleared except Disk Failure 
equipment alert is displayed for 
two minutes, four times an hour.