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Datex-Ohmeda S/5 M-PT Technical Reference Manual Slot

Datex-Ohmeda S/5 M-PT Technical Reference Manual Slot

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Datex-Ohmeda Pressure Modules
TM
S/5
Pressure Temp Module, M-PT (Rev. 02)
TM
S/5
Pressure Module, M-P (Rev. 04)
Technical Reference Manual Slot
All specifications are subject to change without notice.
Document No. 800 1013-1
June 2001
Datex-Ohmeda Inc.
Datex-Ohmeda Division,
3030 Ohmeda Drive
Instrumentarium Corp.
53707–7550 MADISON, WIS
P.O. Box 900, FIN-00031
USA
DATEX-OHMEDA, FINLAND
Tel. +1-608-221 1551, Fax +1-608-222 9147
Tel. +358 10 394 11 Fax +358 9 146 3310
www.us.datex-ohmeda.com
www.datex-ohmeda.com
 Instrumentarium Corp. All rights reserved.

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  • Page 1 Datex-Ohmeda Pressure Modules Pressure Temp Module, M-PT (Rev. 02) Pressure Module, M-P (Rev. 04) Technical Reference Manual Slot All specifications are subject to change without notice. Document No. 800 1013-1 June 2001 Datex-Ohmeda Inc. Datex-Ohmeda Division, 3030 Ohmeda Drive Instrumentarium Corp.

  • Page 3: Table Of Contents

    Table of contents TABLE OF CONTENTS Pressure Module, M-P, Pressure Temp Module, M-PT TABLE OF CONTENTS TABLE OF FIGURES Introduction Specifications 1.1 General specifications ..........................2 1.2 Typical performance ..........................2 1.2.1 InvBP...............................2 1.2.2 Temperature.............................2 1.2.3 Signal output ...........................2 1.3 Technical specifications..........................3 1.3.1 InvBP...............................3 1.3.2 Temperature.............................3 1.3.3 Signal output ...........................3...

  • Page 4: Table Of Figures

    6.1.10 Front panel stickers for S/5 modules (round buttons) ..............31 Earlier Revisions APPENDIX A Service check form TABLE OF FIGURES Figure 1 Datex-Ohmeda M-PT and M-P Module....................1 Figure 2 Front panel of M-P and M-PT Module..................... 5 Figure 3 PT board block diagram ........................6 Figure 4 Pressure transducer principle of operation.....................

  • Page 5: Introduction

    ECG and pressure signal output. NOTE: Do not use identical modules in the same monitoring system. The modules M-P and M-PT are considered as identical modules. Figure 1 Datex-Ohmeda M-PT and M-P Module Document No. 800 1013-1...

  • Page 6: Specifications

    Datex-Ohmeda S/5 monitors SPECIFICATIONS 1.1 General specifications Module size, W × D × H 37 × 180 × 112 mm / 1.5 × 7.1 × 4.4 in Module weight 0.35 kg / 0.8 lbs Power consumption Approximately 3.5 W 1.2 Typical performance 1.2.1 InvBP...

  • Page 7: Technical Specifications

    Pressure Module, M-P and Pressure Temp Module, M-PT 1.3 Technical specifications 1.3.1 InvBP Accuracy ±5 % or ±2 mmHg, whichever is greater Transducer and input sensitivity 5 µV/V/mmHg, 5 VDC, 20 mA max current Nonlinearity <1 %, 0 to 200 mmHg <2 %, -40 to 0 and 200 to 320 mmHg Filter 0...4 - 22 Hz adjustable...

  • Page 8: Functional Description

    Datex-Ohmeda S/5 monitors FUNCTIONAL DESCRIPTION 2.1 Measurement principle 2.1.1 Invasive blood pressure To measure invasive blood pressure, a catheter is inserted into an artery or vein. The invasive pressure setup, consisting of connecting tubing, pressure transducer, an intravenous bag of normal saline all connected together by stopcocks, is attached to the catheter.

  • Page 9: Figure 2 Front Panel Of M-P And M-Pt Module

    Pressure Module, M-P and Pressure Temp Module, M-PT Key for pressure zeroing. • Communication between the module and the central unit is established through RS485 serial interface. The power supply voltages to the module are generated in the power supply section of the monitor’s Central Unit.

  • Page 10: Board

    Datex-Ohmeda S/5 monitors 2.2.1 PT board Module bus connector, D25 RS485 driver RS485 driver Power-up Power , for data for module reset non-isolated reset section ECG OUT PRESSURE OUT to output connector Opto Isolation Isolation transformer Patient Isolation Power, isolated...

  • Page 11: Figure 4 Pressure Transducer Principle Of Operation

    Pressure Module, M-P and Pressure Temp Module, M-PT The P3 signal is transmitted as a pulse width modulated (PWM) signal over the patient isolation. The analog signal is generated by low-pass filtering the PWM signal. Microprocessor unit The microprocessor uses the Intel 80C196KC-16 which includes three A/D converters and a UART. There are external memories, an 8-bit data bus, a 16 MHz oscillator, an open collector reset, and a watchdog timer.

  • Page 12: Figure 5 Temperature Measurement Principle

    Datex-Ohmeda S/5 monitors +5Vreference 0 °C => 7K357 15 °C => 3K541 25 °C => 2K253 38 °C => 1K301 45 °C => 984R1 to AD converter offset Figure 5 Temperature measurement principle Serial communication Serial communication between the module and the Central Unit is done by RS485 type bus whose buffers get their supply voltage (+5 VDC) from the Central Unit and in the isolation section get the supply voltage (+5 V) from the isolated power supply.
  • Page 13 Pressure Module, M-P and Pressure Temp Module, M-PT The reset line is an open collector type with a pull-up resistor so that the microprocessor is able to use its internal watchdog function. Power supply section Isolated supply voltage of the module is developed from +15 Vdirty voltage from the Central Unit. Power supply is a switched-mode circuit, where FET transistor switch is controlled by an oscillator using bipolar timer.

  • Page 14: Connectors And Signals

    Datex-Ohmeda S/5 monitors 2.3 Connectors and signals 2.3.1 Module bus connector Figure 7 Module bus connector (X1) Pin No Signal RESET_RS485* -15 VDC* +15 VDIRTY* +15 Vin* NDATA_RS485* DATA_RS485* Ground* NRESET_RS485* CTSB RTSB RXDB TXDB Ground* +32 VDIRTY GroundDIRTY* CTSC...

  • Page 15: Front Panel Connectors

    Pressure Module, M-P and Pressure Temp Module, M-PT 2.3.2 Front panel connectors Pressure connector (P3) Pin No Signal Pressure 3 + Pressure 3 - Polarization - (ground) Polarization + Not connected Not connected Not connected Not connected Ground Cable detection Signal out connector (Sync.
  • Page 16 Datex-Ohmeda S/5 monitors Pressure sensor connector (X4) Pin No Pin No Signal Notes board fr.panel PCABEL 5V if cable not connected PCURRENT Pulsed supply to sensor Signal from the sensor Signal from the sensor fGND Floating GND When the board is used in the M-PT module, there are the following connectors connected on the board in addition to X1 and X4.

  • Page 17: Service Procedures

    Field service of the M-P and M-PT modules is limited to replacing faulty circuit boards or mechanical parts. The circuit boards should be returned to Datex-Ohmeda for repair. Datex-Ohmeda is always available for service advice. Please provide the unit serial number, full type designation, and a detailed description of the fault.
  • Page 18 Datex-Ohmeda S/5 monitors All modules Detach the module box by removing the two screws from the back of the module. Be careful • with the loose latch and spring locking pin. Check internal parts: screws are tightened properly • cables are connected properly •...
  • Page 19 Pressure Module, M-P and Pressure Temp Module, M-PT Enter the service menu: Monitor Setup - Install/Service (password 16-4-34) - Service - (password 26-23-8) Take down the information regarding module software by selecting SCROLL VERS and turning the ComWheel. Enter the P/PT service menu (according to the tested module): Parameters - P/PT Check that the “Timeouts”, “Bad checksums”...
  • Page 20 Datex-Ohmeda S/5 monitors The settings and checks with a Dynatech Nevada medSim 300 Patient Simulator are: SENSITIVITY switch position: 5 µV/V/mmHg ECG - BASE - BPM - 60 BP - 2 - WAVE - connect a cable from the channel BP3 to the connector P3.
  • Page 21 Pressure Module, M-P and Pressure Temp Module, M-PT Modules with signal output connector Preset InvBP and ECG measurement settings: • Invasive Pressures - P3 Setup - Label - Art - ECG1 LEAD -I Connect a patient simulator to the connector P3 and to the connector ECG on the used M-NE(12)STPR/M-ESTPR/M-ESTP.

  • Page 22: Disassembly And Reassembly

    Datex-Ohmeda S/5 monitors All modules 16. Perform electrical safety check and leakage current test. 17. Check that the module functions normally after the performed electrical safety check. 18. Clean the module with suitable detergent. Fill in all necessary documents. •...

  • Page 23: Adjustments And Calibrations

    3.4.2 Temperature calibration NOTE: For the temperature calibration, separate test plugs (25 °C and 45 °C) are necessary. A test set of two plugs is available from Datex-Ohmeda, order code 884515. Performe temperature calibration whenever the measured values deviate more than ±0.1.
  • Page 24 Datex-Ohmeda S/5 monitors Insert calibration plug (25 °C) into T3/T4 connector. Press the ComWheel. Insert calibration plug (45 °C) into T3/T4 connector. Press the ComWheel. Press in the protect button at the bottom of the module and select ON protect mode.

  • Page 25: Troubleshooting

    Pressure Module, M-P and Pressure Temp Module, M-PT TROUBLESHOOTING 4.1 Troubleshooting chart See also the User's Reference Manual for more troubleshooting procedures. 4.1.1 Invasive blood pressure Trouble Cause Treatment Abnormally low Transducer wrongly positioned. Check mid-heart level and reposition transducer. pressure No pressure Defective transducer.

  • Page 26: Temperature

    Datex-Ohmeda S/5 monitors 4.1.2 Temperature Trouble Cause Treatment Message Faulty calibration. Perform calibration. If it does not help, check that front panel 'TEMPERATURE ERROR' connectors are properly connected to STP board. No temperature displayed Wrong type of probe. Use correct probe.

  • Page 27: Troubleshooting Flowchart

    Pressure Module, M-P and Pressure Temp Module, M-PT 4.2 Troubleshooting flowchart Possibly faulty M-P/PT module Take all modules out of the Frame Insert M-P /PT and turn the power on Does fault Fault not in M-P/PT still appear? module Enter the Service menu Does another Module-ID module work...

  • Page 28: Service Menu

    Datex-Ohmeda S/5 monitors SERVICE MENU Monitor Setup Press the key. Select Install/Service (password 16-4-34). Select Service (password 26-23-8). Select Parameters. Select P/PT module. Document No. 8001013-1...

  • Page 29: P/Pt Menu

    Pressure Module, M-P and Pressure Temp Module, M-PT 5.1 P/PT menu Calibrations See section 5.2 “Calibrations menu.” Record Data Record Data prints out the shown service data and board information (id., serial number, and software id.) onto the recorder module, M-REC. Service Data Gain is a coefficient to compensate gain error.

  • Page 30: P/Pt Calibration Menu

    Datex-Ohmeda S/5 monitors values do not indicate a failure, but the continuous counting (more than 50 per second) during the normal operation indicates either serial communication failure or module not in place. RAM indicates the state of the RAM memory. ROM indicates whether the checksum in the EPROM is in accordance with the one the software has calculated.
  • Page 31 Pressure Module, M-P and Pressure Temp Module, M-PT Calibration: Connect the pressure transducer with the pressure manometer to the P3 connector. Select Calibrate P3. Leave the transducer to room air pressure. Press the ComWheel to start zeroing. Supply a pressure of 100 mmHg to 300 mmHg to the transducer. The recommended pressure is 200 mmHg.

  • Page 32: Spare Parts

    Datex-Ohmeda S/5 monitors SPARE PARTS 6.1 Spare parts list NOTE: Only changed part numbers are listed under later revisions. To find the desired part: check first the list of the revision that corresponds your device. If the part is not listed there, check the previous revision, etc.

  • Page 33: Pressure Module, M-P, Rev. 01

    Pressure Module, M-P and Pressure Temp Module, M-PT 6.1.2 Pressure Module, M-P, Rev. 01 No new spare parts. 6.1.3 Pressure Module, M-P, Rev. 02 Item Description Order No. STP board, M-ESTP (Rev. 03-04), M-P (Rev. 02) *(882627) Use 885697 6.1.4 Pressure Module, M-P, Rev. 03 Item Description Order No.

  • Page 34: Pressure Temp Module, M-Pt, Rev. 00

    Datex-Ohmeda S/5 monitors 6.1.6 Pressure Temp Module, M-PT, Rev. 00 Item Description Order No. Module box (single width) 886167 Spring pin for module box 879182 Latch for module box 879181 Cross recess screw M3x8 black 616215 PT board, M-PT (Rev. 00)

  • Page 35: Pressure Temp Module, M-Pt, Rev. 01

    Pressure Module, M-P and Pressure Temp Module, M-PT 6.1.7 Pressure Temp Module, M-PT, Rev. 01 Item Description Order no. PT board, M-PT (Rev. 01), M-P (Rev.03) *895047 * the part is recommended for stock 6.1.8 Pressure Temp Module, M-PT, Rev. 02 No new spare parts.
  • Page 36 Datex-Ohmeda S/5 monitors M-PT Adaptation (Rev. 04) (Rev. 02) Order No. Order No. 898768 898768 898735 898759 898734 898758 898738 898762 898741 898765 898736 898760 898739 898763 898745 898769 898737 898761 898743 898767 898734 898764 898742 898766 Document No. 8001013-1...

  • Page 37: Earlier Revisions

    Pressure Module, M-P and Pressure Temp Module, M-PT EARLIER REVISIONS This manual also supports M-P revisions 02 and 03. For service information on the earlier revisions, please refer to: P Module revision 00 Service Manual p/n 880850 P Module revision 01 Service Manual p/n 882580 Document No.
  • Page 38 Datex-Ohmeda S/5 monitors Document No. 8001013-1...
  • Page 39 APPENDIX A, Service Check Form, M-P and M-PT APPENDIX A Document No. 800 1013-1...
  • Page 40 Datex-Ohmeda S/5 monitors Document No. 800 1013-1...

  • Page 41: Service Check Form

    APPENDIX A, Service Check Form, M-P and M-PT SERVICE CHECK FORM Pressure Modules, M-P, M-PT Customer Service Module type Service engineer Date OK = Test OK N.A. = Test not applicable Fail = Test Failed All modules N.A. Fail N.A. Fail 1.
  • Page 42 Datex-Ohmeda S/5 monitors OK = Test OK N.A. = Test not applicable Fail = Test Failed TEMP measurement 11. Temperature probe detection 12. Calibration check 13. Temp test -function Notes Signal output 14. ECG output 15. InvBP output Notes All modules 16.

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