Accutorr Plus Service Manual - Mindray

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Figure 2-13 Tone-Processor Module Functional Block Diagram Front End Connections The front end section of the future Display Controller board will be provided with an unregulated +9V and –9V. These supplies will be able to sustain maximum loads of 56mA each (refer to the manufacturers data sheet for T2, CDI 109D5VFS). 2.2.13 Tone Processor Board Theory of Operation The Accutorr Plus Tone-Processor module drives all alarms and advisory tones, generated by the LED/CPU module, to the speaker. The signal is passed through a DAC (Digital-to-Analog-Converter), which controls the rise and decay of the output tone to comply with EN-475 specification Device U1 is an Atmel ATmega103, 8-bit AVR microcontroller. The ATmega103 is a low-power CMOS microcontroller based on the AVR RISC architecture. Its throughput approaches one MIPS per MHz allowing optimization of power consumption versus processing speed. U2 is a dual 8-bit DAC that interfaces to the Microcontroller. It controls the tone up/down ramping under the command of the Microcontroller, by controlling the attenuation to its input signal. The device’s chip-select and write-enable pulses are provided by the Microcontroller. Proper hardware operation places specific requirements on the module’s software. Although specific implementation details fall beyond the scope this document, the following is an overview of the major tasks to be performed by the software. The Microcontroller would normally be placed in a sleep state, after initialization, in the absence of a tone signal in order to conserve power. Upon the presence of an advisory tone or an alarm an interrupt is generated, which wakes up the device. The amplitude and frequency of the incoming signal is analyzed then, a replica of the input signal is generated, after approximately 25ms delay, and presented to the DAC. The tone ramp-up sequence is accomplished with dedicated I/O ports, which drives write commands and control bytes with an increasing count and to the DAC, triggered by the period of the input tone. This would result in an audible tone with rising amplitude. Upon detection of the end of the tone burst, the ramp-down sequence is entered, similar in nature to the ramp-up sequence. 2-34 Added 12/20/00 Accutorr Plus Service Manual Chapter 2 - Theory of Operation
3.0 SPECIFICATIONS CONTENTS OF THIS CHAPTER ...........................Page 3.1 Performance Specifications ..............................3-1 3.2 Safety Characteristics ..................................3-6 3.3 Physical Characteristics ................................3-7 3.4 Environmental Characteristics ...........................3-7 3.5 Electrical Ratings .....................................3-7 3.6 Agency Compliance ...................................3-8 3.7 Electromagnetic Compatibility...........................3-8 3.1 PERFORMANCE SPECIFICATIONS Systolic Pressure Readout Number of Digits: 3 Accuracy*: Mean error less than 5 mmHg, Standard deviation less than 8 mmHg. Range: Adult Mode: 55 to 260 mmHg Pediatric Mode: 55 to 160 mmHg Neonatal Mode: 45to 120 mmHg Diastolic Pressure Readout Number of Digits: 3 Accuracy*: Mean error less than 5 mmHg, Standard deviation less than 8 mmHg. Range: Adult Mode: 30 to 200 mmHg Pediatric Mode: 30 to 150 mmHg Neonatal Mode: 25 to 100 mmHg *Tested per ANSI/AAMI SP10-1992 methods. Accutorr Plus Service Manual 3-1 Revised 12/20/00 Chapter 3 - Specifications
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INTRODUCTION Chapters 1. Operation
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TABLE OF CONTENTS INTRODUCTION ....
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2.2.11 Masimo SET Technology. ....
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7.5.13 Verification of Accutorr Plu
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1.0 OPERATION CONTENTS OF THIS CHAP
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1.2 CONTROLS AND INDICATORS This se
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1 2 3 4 5 6 7 8 SYS. DIA. NIBP Sp0
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11. Select Key (Accutorr Plus model
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29. Set Alarms Key This key is used
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1.2.2 Rear Panel Figure 1-5 Rear Pa
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1.2.4 Recorder Module Figure 1-7 Re
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1.3. OPERATION This section of the
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1.3.2.3 Room Number and Bed Letter
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2. Attach the cuff hose to the NIBP
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1.3.4 AUTOMATIC NIBP MEASUREMENTS (
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1.3.5 ALARMS The Accutorr Plus prov
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1.3.5.3 How to Mute Alarms When an
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1.3.6.2 To View the Stored Measurem
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1.3.8 SETTING THE LCD CONTRAST (Vie
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1.3.10 SpO2 MEASUREMENTS (Accutorr
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C. Sensor Connection to the Accutor
Page 45 and 46: 1.3.10.2 Sequence for establishing
Page 47 and 48: If patient movement presents a prob
Page 49 and 50: interference; and placement of a se
Page 54 and 55: 1.3.12 RECORDER (optional) The Accu
Page 56 and 57: 1.3.14 BATTERY OPERATION When the A
Page 58 and 59: User Configuration Number Function
Page 60 and 61: 1.3.17 HOW TO ATTACH OPTIONAL THERM
Page 62 and 63: 1.3.19 PLACEMENT OF RECORDER PAPER
Page 64 and 65: 2.2 DETAILED CIRCUIT DESCRIPTIONS T
Page 66 and 67: Notes: 1. Detailed functional descr
Page 72 and 73: 3. Perform NIBP functions. start m
Page 74 and 75: FUNCTIONAL GROUP SIGNALS SIGNAL DES
Page 76 and 77: Real Time Clock and NV RAM (RTC), U
Page 78 and 79: Keypad interface The keypad is made
Page 80 and 81: Software Control There are no softw
Page 82 and 83: Figure 2-5 Recorder Module Control
Page 84 and 85: 2.2.5 SpO2 Module: (Accutorr Plus M
Page 86 and 87: Figure 2-7 SpO2 Block Diagram Digit
Page 88 and 89: 2.2.7 Communication Board The Accut
Page 90 and 91: Figure 2-9 LCD Inverter Module Bloc
Page 92 and 93: Figur2-11 Datascope Interface Circu
Page 94 and 95: Figure 2-12 2.2.12 Masimo Interface
Page 98 and 99: NIBP Measurement Cycle Time Less th
Page 100 and 101: Masimo ® SpO2 Range: 40-100% SpO2
Page 102 and 103: 3.2 Safety Characteristics Risk (Le
Page 105 and 106: 4.0 REPAIR INFORMATION CONTENTS OF
Page 107 and 108: 2. Use the proper equipment. Specia
Page 109 and 110: 4.5.1 Isolating the Problem, System
Page 111 and 112: has been received by the Accutorr P
Page 113 and 114: 4.6 DISASSEMBLY INSTRUCTIONS PRECAU
Page 115 and 116: 4.6.7 Removal of the Motor Filter (
Page 117 and 118: 4.6.14 Thermometer, Predictive (opt
Page 119: 5.0 ASSEMBLY AND SCHEMATIC DIAGRAMS
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Schematic Drawing Main Power Supply
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6.0 REPLACEMENT PARTS CONTENTS OF T
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6.7 ABBREVIATIONS The following abb
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6.8 ISOMETRIC DRAWINGS AND PARTS LI
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Figure Datascope No. Description Pa
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With NELLCOR SpO2 only Monitor Conf
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6.8.3 Predictive Temperature Module
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6.8.4 Mobile Stand Type 1 (Gray Bas
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6.8.5 Mo bile Stand Type 2 (Black B
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Predictive Thermometer Bd Assy 0670
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Recorder Board Assembly 0670-00-058
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NIBP Circuit Board Assembly 0670-00
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SpO2 Board Assembly 0670-00-0593-03
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LCD Backlite Power Supply Board 067
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CPU/LED Board 0670-00-0650-03/04 It
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Communication Board 0670-00-0661-01
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Power Supply, Sealed Lead Acid 0014
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Power Sup ply, Lith ium Ion 0014-00
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Power Sup ply, Lith ium Ion 0014-00
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Masimo SpO2 Assy 0670-00-0716 Item
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Tone Processor Module 0670-00-1134
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7.0 CALIBRATION CONTENTS OF THIS CH
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7.1 INTRODUCTION The Accutorr Plus
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7.5.2 Software Version Test (0a, 0b
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7.5.4 LED Test (2a, 2b) This test a
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A fixed volume of 700 cc is pumped
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7.5.12 Main Pressure Transducer Ver
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4. Pump up the Cufflink simulator t
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7.6.2 Water Bath Method 1. Prepare
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Ambient temperature (TA) measured:
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7.7.2 Set the Current Time 1. Press
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7.9 TREND MEMORY INITIALIZATION 1.
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SYS. DIA. NIBP SYS. DIA. NIBP 20/05
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8.0 PREVENTIVE MAINTENANCE CONTENTS
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Accutorr Plus Service Manual - Mindray

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