ZOLL Propaq M Rev A - Manual (Page 69)

Overview
9650-0804-01 Rev. A ZOLL Propaq M Service Manual 65
SPO
2
Module
Propaq M supports the Nellcor NELL-3 OEM Module that mounts to the Monitor board and
communicates through J36 and J40. The SpO
2
module communicates across an isolation
barrier using a UART on the PP. Signals from the probe are routed to the SpO
2
module through
a flex cable that connects to J41 of the Monitor board.
End tidal CO
2
(CO
2
)
Propaq M supports an Oridion Microstream
®
CO
2
module. The CO
2
module mounts to the
Monitor board and communicates to the board through a cable connected to J50. Serial
communications from the monitor board is implemented via a UART on the PP. The CO
2
module obtains gas samples from the sampling lines through tubing and a 3-wire cable
connected to the left side panel.
Thermometry
Propaq M supports two simultaneous temperature measurements. YSI400/YSI700 series
probes are used to make temperature measurements. Data is communicated to the PP from the
Temperature ADC via and isolated SPI bus through the FPGA. The Temperature probes
connect to the monitor board through the IBP/Temp wire harness which connects to J33 of the
Monitor board.
Power Circuitry, Battery Charger, DC-DC converters
Power circuitry for all subsystems reside on the Monitor Board. Auxiliary Power and Battery
Power are automatically switched to provide constant current, the unit draws current from
auxiliary power when present. There is a smart battery charging circuit that will charge the
battery when Auxiliary power is present. Switching mode DC-DC converters are utilized to
make internal 6V, 5V, 3.3V, 1.8V and processor core voltages. Regulators are used to provide
regulated supply voltages with low dropout for low current consumption circuits. Each of the
isolated modules, Temp/IBP, ECG, SpO2 have independent power supplies. Isolated power
supplies are designed for isolating Patient Applied Parts. The MP via the FPGA GPIO has the
ability to shut down voltage rails or power to individual patient parameters. Power from the
battery connects to the Monitor board through J29. Auxiliary power connects to the Monitor
board through J31.
USB Host Port
Propaq M Monitor Board incorporates one USB Host ver 1.1 port. The port uses the USB
controller built into the PXA270 Main processor. Full speed of 12 Mbps and Low speed
1.5Mbps are supported. The Host port supports a USB flash memory stick for data export. The
USB host connector is in the right side panel and connects to the Monitor board through J44.
Lithium Ion Battery
The portable Propaq M device is powered by a removable Lithium Ion battery pack. This
battery pack incorporates protection circuitry and "smart battery" circuitry. The battery power
is routed from the 2-pin connector on the rear of the device to J29 of the Monitor board. The
Power Controller communicates to the smart circuitry on the battery through the 4 spring
contacts connected to J34 on the Monitor board.