ZOLL Propaq MD Rev A - Manual (Page 93)

Overview
9650-0807-01 Rev. A Propaq MD Service Manual 89
Bluetooth - The Bluetooth interface on the CP is provided by a UART interface with auxiliary
GPIO lines for control. Collectively, this interface allows the CP to control power, scan for
available devices and to select/deselect a desired connection.
GPS - The GPS interface on the CP is provided by a UART interface with auxiliary GPIO lines
provided for control. Collectively, this interface allows the CP to control power and to listen for
satellites. The UART interface is jumpered and also routed to the expansion connector to
provide a means for accessing the CP's console debug port. If the console port is enabled, the
GPS interface will not be available and vice-versa.
Expansion FLASH Storage - This consists of a block of supplemental FLASH that is
physically separate from the NAND FLASH used to store the boot loaders, kernel and system
software. This partition is used to store upgrade images, patient data and device log data. This
storage exists on the carrier board and is connected to the CP via an SD interface.
ECG 3/5 or 12 Lead Circuitry
Propaq MD supports 3/5 lead and 12 lead ECG acquisition. Analog circuitry provides signal
conditioned data through an A/D converter to the PP. All of the signal processing, lead
derivation, fault detection is performed by the PP. The ECG circuitry utilizes a CPLD for
control of analog circuitry and transmission of data to the PP across an isolation barrier. A
common connector is used to receive 3/5 Lead ECG cables with a 12 Lead ECG extension. The
ECG acquisition inputs are CF defib-proof applied parts. The defib protection resistors reside in
the patient cable. The ECG signals from the external connector on the left side panel are
connected to the monitor board through a flex cable to J28.
Impedance Respiration
Propaq MD provides the circuitry for impedance respiration measurements in 3/5 and 12 lead
configurations. This circuitry provides a low-current 72kHz AC signal across leads I and II of
the ECG cable. The signal is passed through a synchronous demodulator and decoded by the PP
through the ECG CPLD.
Blood Pressure NIBP
The Propaq MD NIBP circuitry resided on module that connects to the Monitor board through
J32. The PP communicates to the NIBP module via a bi-directional, serial bus. The NIBP
module supports both dual lumen and single lumen cuffs. The NIBP pump and valve hoses are
connected to the cuff connector on the left side panel and to the filter on the rear enclosure. The
pump and valve are connected to the NIBP module by short, 2-wire cables.
Invasive Blood Pressure (IBP)
Propaq MD supports up to 3 IBP measurement channels. The IBP circuitry supports AAMI
BP-22 transducers (5uV/V/mmHg). The PP communicates directly to the IBP ADC over an
isolated serial bus through the FPGA. The IBP probes connect to the monitor board through the
IBP/Temp wire harness which connects to J33 of the Monitor board.
SPO
2
Module
Propaq MD supports the Masimo 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.