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EQUIPMENT OVERVIEW: Theory of Operation
2-20
DASH 2000 Patient Monitor
Revision A
2000 412-001
Main Processor PCB
Theory
The main processor PCB provides signal processing, system control, user
interface, and communications functions for the monitor, both color LCD
and monochrome LCD display versions. It receives and processes
digitized patient data from the isolated DAS assembly (acquisition PCB),
text and waveform information for the video display, interfaces with the
operator via the front panel switches and Trim Knob, and communicates
with other products on the network using a built-in Ethernet interface.
PCB Block Diagram
MPC821
SCC1
SCC2
SMC2
SPI
ECG/RESP Interface
ETCO2 PCB
THERMAL
RECORDER
ADDRESS
DATA &
CONTROL
ETHERNET-
Interface
(insulated)
UNITY
NETWORK
EXPANSION
PERIPERAL
Interface
DOCKING
INTERFACE
SMC1
AutoPort-
Interface
(insulated)
AUTO
PORT
PC CARD Interface
PCMCIA
PC
CARD
LCD
DISPLAY
(mono or
color)
LCD
RESET
Control
Voltage
Converter
Battery
Control
Power
Supply
Battery
Pack
ECG(analog)
DEFI_SYNC
EEPROM
2kB
RTC
I2C
NBP PCB
Backlight
Inverter
SPO2, NBP
2 x TEMP
( 2 x BP )
ECG / RESP
BDM
JTAG-PORT
32.768 kHz
Test Port
Debug Port
KEYPAD/TRIMM KNOB
D
AS PCB
MAIN CONNECT
OR PCB
4 MB FLASH
512 kB SRAM (buff.)
4 MB DRAM
TONE
GENERATOR
MAIN PROCESSOR BOARD
Sync-Out
D/A-Converter
SYSTEM
CONTROL
ASIC
UART
BL
HOS/
KYO_du
AB
AP
JTAG
BDM
SPK
NIBP
WRITER
ETCO2
ALARM LIGHT
AK
Al_CONN
CONN
PCMCIA
DAS
SPEAKER
LCD
mono
watchdog
ON
LCD
color
watchdog
OFF
LED 1
LED 3
LED 4
LED 2
S1
1
2
Summary of Contents for marquette Dash 2000
Page 12: ...Contents viii DASH 2000 Patient Monitor Revision A 2000 412 001 ...
Page 82: ...Maintenance Repair Log 3 36 DASH 2000 Patient Monitor Revision A 2000 412 001 ...
Page 156: ...UPPER LEVEL ASSEMBLY Spare Parts List 7 10 DASH 2000 Patient Monitor Revision A 2000 412 001 ...
Page 157: ...Revision A DASH 2000 Patient Monitor 8 1 2000 412 001 8 ASSEMBLY DRAWINGS Contents ...
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