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Datex-Ohmeda S/5 M-NIBP, Техническое описание слота

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NIBP Module, M-NIBP

Document No. 800 1015-1

5

2.2.1

 

NIBP board

ADDRESS
DECODER

POWER -UP
RESET

CPU
80C51FA

   

 

  

  

RS485
INTERF.

ADDRESS
LATCH

RAM

INTERNAL
WATCHDO G

EEPROM
(Calib-
ration
Data)

AD -C O N -
VER T ER

Write protect  switch

EPROM

FRONT
PANEL
KEYS

SOFT-
WARE
CONTROL

DATABUS

ADDRESS BUS

WATCHDO G
TIMER

X1

JOINING
CHAMBER

CUFF

M

EXHAUST VALVE 1

BLEED VALVE

CHECK VALVE

PUMP

EXHAUST
VALVE 2

PRESS URE
TRAN

S

-

D

UCERS

PUM P  and
VALVE 
DR IVER

OVE RPR ESSURE CO NTRO L

ZERO
VALVE

B1

B2

+ 15 VD

to

/fr

o

m

 m

o

d

u

le

 b

u

s

Figure 3

NIBP board functional block diagram

Pressure transducers

The NIBP board contains two pressure transducers. They are of piezoresistive type. One is used for

measuring the pressure of the blood pressure cuff and the pressure fluctuations caused by arterial

wall movement (B1). The other is used for detection of cuff hose type, cuff loose and cuff occlusion

situations etc. (B2). The transducers are internally temperature compensated. They are supplied by

a constant voltage and their output voltage changes up to 40 mV max. (50 kPa, 375 mmHg).

Signal processing

Two signals from the pressure transducers are amplified and sent to A/D converter. After the

converter, digitized signals are sent to microprocessor for data processing. Before the converter,

one of the signals is used to adjust the offset to the pressure safety level.
The NIBP board is controlled with 80C51FA microprocessor at 16 MHz oscillator frequency.

Communication between the module and the monitor CPU board is established through RS485

serial interface at 500 kbps data transfer rate.

Содержание S/5 M-NIBP

Страница 1: ...ument No 800 1015 1 June 2001 Datex Ohmeda Inc 3030 Ohmeda Drive 53707 7550 MADISON WIS USA Tel 1 608 221 1551 Fax 1 608 222 9147 www us datex ohmeda com Datex Ohmeda Division Instrumentarium Corp P O Box 900 FIN 00031 DATEX OHMEDA FINLAND Tel 358 10 394 11 Fax 358 9 146 3310 www datex ohmeda com Instrumentarium Corp All rights reserved ...

Страница 2: ......

Страница 3: ...eck 10 3 2 1 Recommended tools 10 3 2 2 Recommended parts 10 3 3 Disassembly and reassembly 16 3 4 Adjustments and calibrations 17 3 4 1 Pressure safety level detection OFFSET 17 3 4 2 NIBP calibrations 17 4 Troubleshooting 19 4 1 Troubleshooting chart 19 4 2 NIBP error code explanation 21 4 3 Troubleshooting flowchart 22 5 Service Menu 23 5 1 NIBP Service menu 24 5 1 1 NIBP Demo menu 25 5 1 2 NIB...

Страница 4: ...nel stickers for AS 3 modules square buttons 37 6 1 7 Front panel stickers for S 5 modules round buttons 38 7 Earlier Revisions 39 APPENDIX A 41 Service check form A 1 TABLE OF FIGURES Figure 1 Non invasive blood pressure Module M NIBP 1 Figure 2 Front panel of NIBP Module 4 Figure 3 NIBP board functional block diagram 5 Figure 4 NIBP Module troubleshooting flowchart 22 ...

Страница 5: ...sure parameter module M NIBP The Non Invasive Blood Pressure Module M NIBP is a double width plug in module designed for use with the S 5 monitors Figure 1 Non invasive blood pressure Module M NIBP NOTE Do not use identical modules in the same monitor simultaneously The M NIBP and M NE 12 STPR NESTR NETPR M MRI M MRIP are considered as identical modules ...

Страница 6: ... Venous stasis adult 80 10 mmHg 2 min child 60 10 mmHg 2 min infant 40 10 mmHg 1 min Cuff widths Please see User s Guide 1 3 Technical specifications Deflation rate HR dep 5 13 mmHg sec Inflation rate typical 20 185 mmHg 1 5 s Automatic software control max inflation pressure adult 280 10 mmHg child 200 10 mmHg infant 150 10 mmHg Over pressure limit stops measurement after 2 seconds adult 320 mmHg...

Страница 7: ...cally 40 mmHg above If the systolic pressure is not found inflation pressure is increased typically 50 mmHg Max measurement time adult 2 min child 2 min infant 1 min Pressure transducer accuracy is better than 3 mmHg or 2 whichever is greater Max error 4 mmHg Protection against electrical shock Type BF defibrillation proof ...

Страница 8: ...e pulsating artery Based on these oscillations values for systolic mean and diastolic pressures are calculated The following parts are necessary for NIBP measurement NIBP module Twin hose adult or infant model Blood pressure cuffs different sizes 2 2 Main components The NIBP module consists the following parts NIBP board Pneumatics and hosing NIBP air pump Zero valve Check valve Bleed valve Exhaus...

Страница 9: ...ressure of the blood pressure cuff and the pressure fluctuations caused by arterial wall movement B1 The other is used for detection of cuff hose type cuff loose and cuff occlusion situations etc B2 The transducers are internally temperature compensated They are supplied by a constant voltage and their output voltage changes up to 40 mV max 50 kPa 375 mmHg Signal processing Two signals from the pr...

Страница 10: ...e cuff has been pressurized longer than preset time As soon as the cuff pressure rises over a specified pressure limit timer starts counting The timer is adjusted to stop the pump and open the valves in 2 minutes 10 seconds in adult child mode and in 1 minute 5 seconds in infant mode Valves Exhaust valves are used for emptying the cuff and the joining chamber after the measurement Exhaust valve 1 ...

Страница 11: ... used 1 I RESET_RS485 2 I 15 VDC 3 I 15 VDIRTY 4 I 15 VDC 5 I O DATA_RS485 6 I O DATA_RS485 7 Ground Shield 8 I RESET_RS485 9 I CTSB 10 O RTSB 11 I RXDB 12 O TXDB 13 Ground Shield 14 I 32 VDIRTY 15 I GroundDIRTY 16 I CTSC 17 O RTSC 18 I RXDC 19 O TXDC 20 ON STANDBY 21 PWM_ECG 22 RXDD_RS232 23 TXDD_RS232 24 I 5 VDC 25 I 5 VDC Not used in the M NIBP module ...

Страница 12: ...re test pad blocks on solder side X8 and X6 pads and voltages are X7 X8 X5 X6 X3 Pump X8 1 2 9 10 X6 1 2 7 8 X8 X6 Pin No Signal Pin No Signal 1 GND 1 GND 2 WD out 2 A1 output 3 reset 3 5 V 4 5 V 4 5 V ref 5 15 V dirty 5 B1 out A1 input 6 15 V 6 B1 out 7 15 V 7 B2 out 8 8 B2 out 9 10 GND ...

Страница 13: ...he 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 CAUTION Only trained personnel with the appropriate tools and equipment should perform the tests and repairs outlined in this section Unauthorized service may void warranty of the unit...

Страница 14: ...res are designed for monitors with S 5 monitor software of revision 01 However most of the procedures also apply to monitors which contain some other monitor software type revision 3 2 1 Recommended tools Tool Order No Notes Pressure manometer Adult cuff hose Infant cuff hose Screwdriver 3 2 2 Recommended parts Part Order No Notes NIBP pump filter 57142 Detach the module box by removing the two sc...

Страница 15: ...ary Reattach the module box and check that the latch is moving properly Switch the monitor on and wait until the monitoring screen appears Make sure that NIBP information is selected to be shown on the screen Monitor Setup Screen 1 Setup Digit Fields Field 2 NIBP 4 Plug in the module Check that it goes in smoothly and locks up properly 5 Check that the module is recognized i e the NIBP headers app...

Страница 16: ... Connect a pressure manometer to the NIBP module cuff connector Highlight Start Pump and press the ComWheel Check that the pump turns on and the pressure inside the tubing system starts to increase Stop the pump by pressing the ComWheel again when the pressure reaches 280 mmHg Highlight Open Exh1 Press the ComWeel and check that the pressure inside the tubing system starts to drop then press the C...

Страница 17: ...ed to the displayed pressure value in order to determine the real pressure Recalibrate the NIBP measurement according to the instructions in the Technical Reference Manual if necessary Remember to set the calibration protection back on after the calibration 12 Check the watchdog timer activation pressure Select Pneumatics from the NIBP service menu Keep the pressure manometer connected to the cuff...

Страница 18: ... to Infant Select Start Test and wait until the pump stops and the pressure values on the screen have been updated Check that the values Max press and 2 s after stop are all now within 154 165 mmHg Return to the normal monitoring mode by pressing Normal Screen 15 Connect an adult NIBP cuff to the cuff connector and disconnect one of its hoses Start NIBP measurement by pressing the key Start Cancel...

Страница 19: ...t around your fingers Start NIBP measurement and check that the module identifies the cuff i e the text Infant appears into the NIBP digit field Cancel the measurement after the cuff identification 19 Perform electrical safety check and leakage current test 20 Check that the module functions normally after the performed electrical safety check 21 Clean the module with suitable detergent Fill in al...

Страница 20: ...m 6 Pull out pulse valve from the bottom of the NIBP frame Rev 04 Disassemble the M NIBP module in the following way See the exploded view of the module 1 Remove the two screws from the back of the module 2 Pull the module box slowly rearward and detach it from main body Be careful with loose latch and spring pin for locking 3 To detach the NIBP board remove the support plate by 2 screws item 25 4...

Страница 21: ...ent is calibrated at the factory Zeroing pressure is automatically maintained by the processor If the zero point of the pressure transducer drifts more than specified an error message is given and the NIBP board should be recalibrated or replaced The calibration can be checked and recalibrated in the NIBP service menu The calibration of the primary pressure channel can also be checked from the NIB...

Страница 22: ...turn the toggle switch to the left Menu selection Calibration is now enabled and Protection is disabled When the calibration is enabled a message Calibration not protected appears 4 Start Calibration by pressing the ComWheel Messages ZEROING and ZEROED will appear in the NIBP message field After this a pressure bar will appear 5 Connect an external mercury manometer with pump to module through the...

Страница 23: ...ficult to measure improper cuff position or attachment too few pulses detected weak or unusual blood circulation may give systolic value Check patient condition and retry Check any leaks and retry Use proper size of cuff Check attachment Call service Error X message NIBP hardware error X error number See the description of the error message code the causes and the solutions listed in the next chap...

Страница 24: ...sure probably higher than the maximum inflation pressure Automatic retrial with increased pressure Cuff occlusion message 1 Cuff and or hose occluded Reason cuff tube kinked tube inside module kinked occlusion inside outside module 2 Cuff hose and tubes OK Reason fault in pressure transducer fault in A D converter faulty calibration missing voltages 1 straighten tube remove occlusion 2 replace the...

Страница 25: ...t at the bottom of the module 5 Calibration not protected only with S STD93 Protect calibration by selecting Protection ON in the NIBP calibration menu 6 ADC error ADC circuit failure Change NIBP board 7 Watchdog time too short Change NIBP board 8 Watchdog time too long Change NIBP board 9 Watchdog activated Change NIBP board 10 EEPROM checksum error Memory failure Change NIBP board 11 Auto zero r...

Страница 26: ... Menu OK Insert NIBP module and turn power on Does the fault still appear Module ID on screen Error message on screen See error code explanation in Service Manual and fix it Do they work Check tubes and connectors Find leak and fix it Check and replace NIBP board Replace LED board Check keyboard connector If OK change front panel Check pump connector If OK change pump Check and replace NIBP board ...

Страница 27: ...NIBP Module M NIBP Document No 800 1015 1 23 5 SERVICE MENU 1 Press the Monitor Setup key 2 Select Install Service password 16 4 34 3 Select Service password 26 23 8 4 Select Parameters NIBP ...

Страница 28: ...upply voltage can be turned on by selecting the previous menu and then the desired menu again AD0 to AD7 show the values of each eight channels of A D converter Timeouts is a cumulative number that indicates how many times the module has not responded to the monitor s inquiry Bad checksums is a cumulative number that indicates how many times communication from the module to monitor broke down Bad ...

Страница 29: ... NIBP cuff The measurement result is shown in the adjoining digit field Wave Recording Wave Recording is for selecting the recording option If ON is selected the pressure signals are recorded in realtime onto the M REC paper Remove menu Remove menu widens the displayed waveform area Previous Menu The menu can be closed by selecting the Previous Menu or just by pressing the ComWheel if the Remove m...

Страница 30: ...on ON OFF Select OFF when calibrating Protection can be set to ON or OFF only when the toggle switch at the bottom of the module is set to the right Calibration Calibration selection is available only when protection is OFF NIBP calibration can be performed in the NIBP Service menu as follows NOTE Both channels B1 and B2 must be calibrated simultaneously 1 If Protection is ON change it to OFF by f...

Страница 31: ...st is for starting and Stop test is for stopping the Safety Valve test NOTE Parameter values in Service Data are for reference only Safety Valve Data See NIBP Service menu in chapter 5 1 for information on general items Pressure Zero Protect handle Calibr prot 15 V power AD0 to AD7 as well as Timeouts etc Max press and 2 s after stop show the measured values at Safety Valve test Safety Valve Test ...

Страница 32: ... stops The pulse valve opens The module counts the time it takes for the pressure to go down from 240 mmHg to 50 mmHg and displays it on the screen The test can be manually stopped by selecting Stop test The valve can be adjusted between 0 and 255 0 for fully closed and 255 for fully open First select Set Valve and press the ComWheel See the pulse valve value and adjust it by turning the ComWheel ...

Страница 33: ...cting Auto ON OFF Manual ON OFF STAT ON OFF and Measur ON OFF from the menu Buttons Leds Data See NIBP Service menu in chapter 5 1 for information on general items Pressure Zero Protect handle Calibr prot 15 V power AD0 to AD7 as well as Timeouts etc Buttons Checking The front panel keys function is confirmed by pressing the key and observing OFF turns to ON at the corresponding text in the menu ...

Страница 34: ...d 255 for fully open First press the ComWheel then turn it to adjust the value on screen and finally press to set the value Reset Clock Reset Clock will zero the time on the display Pneumatics Data See NIBP service menu in chapter 5 1 for information on general items Pressure Zero Protect handle Calibr prot 15 V power AD0 to AD7 as well as Timeouts etc Pump Exh1 Valve and Exh2 Valve show their sta...

Страница 35: ...atchdog timer in infant mode about 60 to 70 seconds Stop Test Stop Test is for stopping the test Watchdog Data See NIBP Service menu in chapter 5 1 for information on general items Pressure Zero Protect handle Calibr prot 15 V power AD0 to AD7 as well as Timeouts etc Watchdog Interval shows the time the 15 Vdirty stays on during the test Adult watchdog time testing Select Test ADULT and press the ...

Страница 36: ...Datex Ohmeda S 5 monitors Document No 800 1015 1 32 This page intentionally left blank ...

Страница 37: ...nds your device If the part is not listed there check the previous revision etc until you find the right number this part is recommended for stock 6 1 1 NIBP Module M NIBP Rev 01 1 2 3 5 4 Item Item description Order No Membrane keypad 879374 1 Module box wide 886168 2 Spring pin 879182 3 Latch 879181 4 Cross recess PT screw 3x8 black 628706 5 Front panel unit M NIBP includes all the connectors an...

Страница 38: ...Datex Ohmeda S 5 monitors Document No 800 1015 1 34 Item Item description Order No 8 NIBP board M NIBP Rev 01 880359 Use 883011 1 883902 9 Cross cylinder head PT screw 3x20 628709 ...

Страница 39: ... 880361 18 Hose connector 64654 19 Cross cylinder head screw M2 5x6 628700 20 Port plug for magnetic valve 58535 21 Magnetic valve 58534 22 Pulse valve 880365 6 1 2 NIBP Module M NIBP Rev 02 Item Item description Order No 8 NIBP board M NIBP Rev 02 882418 Use 883011 1 883902 23 Check valve 58542 1 NOTE The NIBP board 883011 can be used as a replacement only with NIBP software 883902 6 1 3 NIBP Mod...

Страница 40: ...Datex Ohmeda S 5 monitors Document No 800 1015 1 36 6 1 4 NIBP Module M NIBP Rev 04 Item Item description Order No 4 Cross recess screw M3 8 black 616215 8 NIBP board M NIBP Rev 04 894368 ...

Страница 41: ...BP Rev 04 888240 30 Bleed valve M NESTPR M NIBP Rev 04 58566 31 Spring 892676 Check valve 58542 6 1 5 NIBP Module M NIBP Rev 05 No new spare parts 6 1 6 Front panel stickers for AS 3 modules square buttons Front panel stickers that are related to the Compact Module type and adaptation Adaptation codes DA Danish DE German EN English ES Spanish FI Finnish FR French IT Italian JA Japanese NL Dutch NO...

Страница 42: ...d to the Compact Module type and adaptation Adaptation codes DA Danish DE German EN English ES Spanish FI Finnish FR French IT Italian JA Japanese NL Dutch NO Norwegian PT Portuguese SV Swedish Adaptation M NIBP Rev 05 Order no DA 898609 DE 898600 EN 898599 ES 898603 FI 898606 FR 898601 IT 898604 JA 898606 NL 898602 NO 898608 PT 898605 SV 898607 ...

Страница 43: ...7 EARLIER REVISIONS For service information on the earlier revisions please refer to NIBP Module revision 01 Service Manual p n 880850 NIBP Module revision 02 Service Manual p n 882580 NIBP Module revision 03 Technical Reference Manual p n 892953 ...

Страница 44: ...Datex Ohmeda S 5 monitors Document No 800 1015 1 40 ...

Страница 45: ...APPENDIX A NIBP Module M NIBP Document No 8001015 1 41 APPENDIX A ...

Страница 46: ...Datex Ohmeda S 5 monitors Document No 800 1015 1 42 ...

Страница 47: ...Fail OK N A Fail 1 Internal parts 2 External parts 3 Pump s filter 4 Installation Notes 5 Recognition 6 Module software NIBP 7 Communication and memories 8 LEDs and membrane keys 9 Pump and valves 10 Leak test 5 mmHg min 11 Calibration check Measured B1 Measured B2 Allowed range 0 mmHg 10 mmHg 100 mmHg 100 z o 2 mmHg 200 mmHg 200 z o 3 mmHg 260 mmHg 260 z o 4 mmHg z o zero offset at 0 mmHg pressur...

Страница 48: ...LT 290 330 mmHg 2 s after stop ADULT 290 330 mmHg Max press INFANT 154 165 mmHg 2 s after stop INFANT 154 165 mmHg OK N A Fail OK N A Fail 15 Cuff related messages 16 Adult cuff detection 17 Test measurement 18 Infant cuff detection Notes 19 Electrical safety check 20 Functioning after electrical safety check 21 Final cleaning Notes Notes Used Spare Parts Signature ...

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