Battery Handling, Maintenance and Good Practices
Battery INOP Messages
The following battery-related INOP messages are issued by the Monitor. All INOPs continue
until the Monitor is plugged into the AC power or the INOP condition is fixed.
BATTERY LOW—This is a hard INOP which indicates that the remaining battery-operating
time is less than approximately 20 minutes.
BATTERY EMPTY—This is a hard INOP which indicates that the resting-state operating
time for the Monitor is guaranteed for a further 5 min only (this information is derived from
the voltage of the battery). The battery LED blinks at a rate of 1.5 red flashes per second. A
severe INOP switches the main alarms-suspended status back to on, and generates an INOP
alarm. If this alarm is silenced, it recurs after 3 minutes.
The previous two INOPs are cleared if AC power is connected, while the following INOP
stays no matter whether AC power is connected.
BATTERY MALFUNCTION—This is a severe INOP which indicates a malfunction of the
hardware or the battery. A severe INOP switches the main alarms-suspended status back to
on, and generates an INOP alarm. If this alarm is silenced, it recurs after 3 minutes.
If this INOP occurs after a new battery has been inserted, it may indicate the battery cannot
yet communicate because it is still too deeply discharged. In this case the message will
disappear after 5 to 10 minutes of charging.
Maintaining the Instrument