Datascope Accutorr Plus - Default Chapter; Table of Contents

Accutorr Plus Service Manual 0070-10-0691 iii
Table of Contents
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
2
Interface ........................................................................................................................... 1 - 9
SpO
2
Processor Circuit Boards ................................................................................................................ 1 - 11
SpO
2
General Theory Of Operation.................................................................................................. 1 -11
Nellcor
®
Nell-3 SpO
2
Circuit Board Theory of Operation .............................................................. 1 - 11
Nellcor
®
Nell-3 Interface Board Theory of Operation ..................................................................... 1 - 12
Masimo SET
®
Technology............................................................................................................... 1 - 12
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