Covidien Nellcor OxiMax N-600x Operator's Manual page 41

Operating the Battery
Critical Low AC
State Operation
Battery Battery Power
7 Yes Yes Yes SpO2 - displayed.
AC/Battery Charge LED -
on
LOW BATTERY LED-on
(flashing)
LOW BATTERY message -
on
The Battery Fuel Gauge
Indicator shows a fully
depleted battery (no bars
lit).
Warning message in the
pleth window: UNIT WILL
SHUT DOWN IF AC
POWER LOST
Audio alarm - low priority
Error code - logged
Affect of Silence key - One
press silences the audible
alarm. Pressing the Affect
Silence key twice cancels
the LOW BATTERY
message, removes the
warning message and
restores default Pleth (or
Blip) display (LED
continues to FLASH until
Low Battery condition is
not true, Battery Fuel
Gauge Indicator shows
charging progress)
Shutdown - N/A
N-600x Operator's Manual 33