Equipment overview: Theory of operation
2-24 Dash 3000/4000/5000 2000966-542D
The DAS system block diagram with Masimo SET SPO2 and four
SuperStat BP channels consists of the following three sections.
Parameter functions of the DAS with Masimo SET SPO2,
four BP channels and Dinamap SuperSTAT NIBP
Except for the SPO2 parameter and additional 2 IBPs, the DAS with the
Masimo SET SPO2 parameter supports the same parameters as DAS
with the GE Ohmeda SPO2 parameter. Refer to “ECG” on page 2-20.
Probes and cable
The Masimo compatible DAS is intended for use exclusively with pulse-
oximetry probes from Masimo Corporation. An adapter cable is used to
interface the probes to the DAS front panel Nicolay connector. The
Nicolay connector utilizes a key pattern unique to Masimo.
Section Description
ECG/Respiration Separately isolated section includes a 7.3728MHz Motorola
MC68HSC705C8A microcontroller, A/D conversion, signal
processing hybrids and DC-DC isolation converter.
Main DAS Separately isolated section includes a 22.1184MHz Motorola
MC68332 microcontroller with FLASH and SRAM memory, an
Analog Devices ADSP-21062 32-bit floating point digital signal
processor running at 12.096MHz, A/D conversion, signal
processing hybrids/modules and DC-DC isolation converter.
Non-Isolated
circuits
Includes ECG and Main DAS isolation power conversion circuitry,
serial and parallel host interfaces and NBP pump, valves, and
over-pressure circuitry.
To Next Page
Loading...
Need help?
General
