Equipment overview:
Theory of operation
2-32
Dash 3000/4000/5000
2000966-542D
Optional thermal printer
The thermal printer includes complete control of the print head to print
the desired waveforms and text as well as monitor power consumption.
The host processor on the main processing board has direct
communication via an 8-bit data bus to the processor residing within the
thermal recorder.
The +9-18 V power supplied to the writer is heavily filtered to provide
the storage capability to smooth power surges and transients caused by
abnormal thermal printing. Such printing may occur if the patient
monitor is subjected to ESU noise. In addition, a writer current limiting
circuit restricts the current to the writer to 2.5 A. If this current limit is
exceeded, the circuit faults and requires the current limiting circuit to
reset through a microprocessor port.
Optional alarm light indicator
An alarm light indicating two levels of visual alarms resides in the
handle of the Dash 3000 patient monitor and in the display bezel of the
Dash 4000/5000 patient monitors. Red and yellow alarm lights
illuminate by addressing an ASIC output port. The Dash 3000 alarm
light interfaces to the processor/power management PCB via the 40-pin
writer interface. The Dash 4000/5000 alarm lights interface to the
processor/power management PCB via the 100-pin DAS/Display /
Keyboard interface.
Compact flash wireless card
The main processor contains a compact flash (CF) card controller, which
complies with the CF standard. One 50-pin fully compliant Type II CF
card slot is supported in this design for a wireless card.
Peripheral expansion interface
A 20-pin peripheral expansion interface is provided to support future
use. An active low peripheral present signal may be polled by software to
identify when a peripheral is attached to the patient monitor.
Asynchronous, AUX, and a switched Ethernet serial communication
channels are supported as well as sw9-18 V and +5 V power.
DAS communication
The microprocessor communicates with the DAS processor using the
second serial communication controller (SCC) of the communication
processor module (CPM). This asynchronous communication channel
operates at TTL levels and is optically isolated within the DAS.
Summary of Contents for 001C 051D 003A
Page 10: ...viii Dash 3000 4000 5000 2000966 542D ...
Page 11: ...2000966 542D Dash 3000 4000 5000 1 1 1 Introduction ...
Page 20: ...Introduction Service information 1 10 Dash 3000 4000 5000 2000966 542D ...
Page 21: ...2000966 542D Dash 3000 4000 5000 2 1 2 Equipment overview ...
Page 64: ...Equipment overview Theory of operation 2 44 Dash 3000 4000 5000 2000966 542D ...
Page 65: ...2000966 542D Dash 3000 4000 5000 3 1 3 Installation ...
Page 73: ...2000966 542D Dash 3000 4000 5000 4 1 4 Configuration ...
Page 99: ...2000966 542D Dash 3000 4000 5000 5 1 5 Preventive maintenance ...
Page 117: ...2000966 542D Dash 3000 4000 5000 6 1 6 Troubleshooting ...
Page 146: ...Troubleshooting Wireless LAN 6 30 Dash 3000 4000 5000 2000966 542D ...
Page 147: ...2000966 542D Dash 3000 4000 5000 7 1 7 Field replaceable units ...
Page 201: ...2000966 542D Dash 3000 4000 5000 8 1 8 Functional and electrical safety checks ...
Page 257: ...2000966 542D Dash 3000 4000 5000 A 1 A Electromagnetic compatibility EMC ...
Page 267: ...2000966 542D Dash 3000 4000 5000 B 1 B Network troubleshooting ...
Page 279: ...2000966 542D Dash 3000 4000 5000 D 1 D Checklist ...
Page 281: ......