GE b30, Technical Reference Manual

Page: 134 / 252

B30 Patient Monitor
5-8
Document no
.
2044677-001
2.3.1 WPM Battery
Batts
This page contains information related to
the batteries and power supplies. The
power supply part is practically the same
as in Power Page. Battery information
includes also data measured by the smart
batteries themselves and transmitted to the
DC/DC Board via SMBus.
SMBus is System Management Bus, a
two-wire interface closely resembling I2C.
SMBus is used for battery communication.
Batts information section of the page has
two columns: Batt1 for battery A data and
Batt2 for battery B data.
NOTE: Text ‘SMBus’ above Current (SMBus
mA) line shows which battery is connected
to the SMBus.
Battery information
Dev. Chem. Device chemistry. B30 monitor supports only Li-ION batteries.
Full Cap.(mAh) Full charge capacity of the battery; capacity of the battery when it is
fully charged.
Rem. Cap. (mAh) Remaining battery capacity.
Rel. St. of CHG (%) Relative state of charge of the battery. Expressed as a percentage of
Rem. Cap. (mAh) / Full Cap.(mAh).
Current (SMBus mA) Battery current (discharge or charge) measured by the battery,
transmitted via SMBus to DC/DC Board.
Voltage (V) Battery voltage measured at the DC/DC Board
Voltage (SMBus mV) Battery voltage measured by the battery.
ICHG Charging power level for charger hardware, this bit can have values
high or low. High is the normal setting, low is used when the DC/DC
Board software determines to limit the total power consumption of
the monitor by limiting the charging power (i.e. due to high
temperature).
Batt Temp (°C) Battery temperature. This is real time data for the battery connected
to SMBus.
Max Batt Temp (PMC) This is subject to change.
Max Batt Temp (SMBus) Maximum battery SMBus temperature from entering the service
pages. Max values are updated in real time for the battery
connected to the SMBus.
Other measurements See explanation in the previous power pages.