Table Of Contents - Datascope Accutorr Plus Service Manual

Contents..................................................................................................................................................... vii
Foreword ................................................................................................................................................... vii
Notes and Precautions ............................................................................................................................... viii
Notes.......................................................................................................................................................... ix
Precautions ................................................................................................................................................ x
Theory of Operation...................................................................................................................................... 1 - 1
Major Functional Blocks of the Accutorr Plus......................................................................................... 1 - 2
CPU/NIBP Module Assembly with LCD Display................................................................................... 1 - 3
Software Overview ........................................................................................................................... 1 - 3
CPU Hardware Controls ................................................................................................................... 1 - 4
NIBP Hardware functions ................................................................................................................. 1 - 4
Main pressure transducer circuitry ........................................................................................... 1 - 4
Over pressure transducer circuitry ............................................................................................ 1 - 4
Five A/D channels .................................................................................................................... 1 - 5
Pulse Channel Filter .................................................................................................................. 1 - 5
Inflation Pump .......................................................................................................................... 1 - 5
Bleed Valve ............................................................................................................................... 1 - 5
Dump Valve .............................................................................................................................. 1 - 5
Cuff Inflation Requirements ..................................................................................................... 1 - 5
Pulse Acquisition Requirements ............................................................................................... 1 - 6
Artifact Rejection Requirements .............................................................................................. 1 - 6
Parameter determination Requirements .................................................................................... 1 - 6
Major Hardware Components ........................................................................................................... 1 - 6
CPU ........................................................................................................................................... 1 - 6
Flash Memory ........................................................................................................................... 1 - 6
Battery Backed Up Static RAM ................................................................................................ 1 - 6
Nonvolatile RAM ..................................................................................................................... 1 - 6
Micromanager ........................................................................................................................... 1 - 7
Battery Backup Voltage Regulator Circuitry ............................................................................ 1 - 7
Real Time Clock ....................................................................................................................... 1 - 7
Recorder Interface ..................................................................................................................... 1 - 7
Communication Block .............................................................................................................. 1 - 8
Backlight LED Driver ............................................................................................................... 1 - 8
LCD Trend Display .................................................................................................................. 1 - 8
Temperature Interface ............................................................................................................... 1 - 9
SpO Interface ........................................................................................................................... 1 - 9
2
SpO Processor Circuit Boards ................................................................................................................ 1 - 11
2
SpO General Theory Of Operation.................................................................................................. 1 - 11
2
®
Nellcor Nell-3 SpO
®
Nellcor Nell-3 Interface Board Theory of Operation ..................................................................... 1 - 12
®
Masimo SET
®
Masimo Interface Board Theory of Operation ............................................................................... 1 - 12
Main Power Supply.................................................................................................................................. 1 - 14
Description ........................................................................................................................................ 1 - 14
Power Supply Output Voltages......................................................................................................... 1 - 14
Lithium Ion Battery and Charger ...................................................................................................... 1 - 14
LED and Tone Module............................................................................................................................. 1 - 16
Accutorr Plus Service Manual
Circuit Board Theory of Operation .............................................................. 1 - 11
2
Technology............................................................................................................... 1 - 12
0070-10-0691

Table of Contents

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