• The ‘Pulse Beep’ (short tone) sounds once for each pulse. Its
automatic pitch modulation reflects changing SpO
2
levels; use
the parameter ‘Pulse Beep’ to switch off/adjust the volume of
this signal.
• The ‘Button Disabled Beep’ (long tone) sounds if a currently
disabled button is pressed (e.g. the Menu Button if ‘Menu
Access’ has been disabled by the institution); its volume is
not adjustable.
• The ‘Button Disabled Beep’ (low pitched tone) sounds if a
Control Button is pressed that is currently disabled (e.g. if the
Menu/Previous Level Button is pressed when ‘Menu Access’ is
disabled by institution).
• The ‘V-Check™ Completed Beep’ (high pitched two beep
tone) sounds upon termination of a V-Check™ Measurement;
use the parameter ‘Alarm Volume’ to adjust the volume of
this signal.
Note: The SDM ranks the priority of auditory alarm signals
and, to ensure that auditory signals do not superpose, only
outputs the highest priority acoustic signal.
Alarms
The SDM uses visual and auditory alarm signals to alert the
user when a physiological measurement parameter (PCO
2
, PO
2
,
SpO
2
, PR) violates its alarm limits and to inform the user about
technical conditions of the equipment that require operator
response or awareness. By degree of urgency, the SDM’s
alarm conditions are assigned to the following priorities: High
priority (SpO
2
limit violation), medium priority (PCO
2
, PO
2
or PR limit violation, ‘Battery Critical’ (if SDM not connected to
AC power)), low priority (various technical alarm conditions).
All alarm signals of the SDM automatically cease when the
associated triggering event has terminated.
WARNING: Setting alarm limits for physiological
measurement parameters to extreme values may render the
SDM’s alarm system useless for the respective parameter.
WARNING: Ensure to select the upper alarm limit for
PO
2
and SpO
2
carefully and according to accepted clinical
standards. High oxygen levels may predispose a premature
infant to develop retinopathy.
Note: Alarm surveillance for physiological measurement
parameters (PCO
2
, PO
2
, SpO
2
, PR) is only active if the respective
parameter is valid or questionable (p. 32). Otherwise,
generation of alarm signals for the respective parameter is
automatically suspended.
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