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LIFEPAK 20/20e Defibrillator/Monitor Device Description
Functional Description (continued)
A06 OEM and
Mechanical
Components PCB
(continued)
The major subsystems on the A06 OEM PCB are as follows:
■ Power supplies — The A06 OEM Interface PCB uses power from the
A02 Patient Parameter PCB to provide the 5 V power for the A10 SpO2
Module.
■ UART and ISO buffers — The UART and ISO buffers provide patient
isolation for the serial data signals received from the A10 SpO2 Module and
routes them to the A02 Patient Parameter PCB.
A07 Battery
On the LIFEPAK 20 defibrillator/monitor, the A07 Battery is a minimum 2.7 Ah
(2.560 Ah per IEC 61951-2:2011), 12 V, NiMH battery that is used as an internal
backup power source when ac power is not available. This technology was
selected due to its light-weight-to-power-storage ratio and low maintenance
features. NiMH batteries require a smart, non-trickle, constant current charger
that is provided by the A03 Power Module when the device is connected to ac
power. The battery wire harness interfaces directly with the A03 Power Module.
The battery is contained within the battery well section of the bottom case. A
small-bladed screwdriver is required to open the battery door, located on the
bottom of the LIFEPAK 20 defibrillator/monitor.
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