Home

Corometrics®170 Series - Frank`s Hospital Workshop

1. Pul wf dre FHR 240 bpm FHR 2 210 2 18 1 150 4 90 60 30 15 34 05 AUG 97 FECG US 3 CM MIN 100 42 75 10 I 34 8 SESS 6 4 25 2 UA O mmHg O kPa Figure 6 6 Dual Heart Rate FECG and US 6 26 170 Series Monitor 2000947 004 Revision C Functional Checkout Procedure Dual Heart Rate Test Non Pattern Dual Ultrasound Modes As stated previously the dual ultrasound mode of the 170 Series Monitor cannot be tested unless two Model 325 Simulators are used or two Nautilus ultrasound transducers Do not attempt to test dual ultrasound using one Model 325 Simulator and one ultrasound transducer This procedure details using two transducers since it is more practical for a test site l 2 If not already on press the monitor s Record pushbutton Plug one ultrasound transducer into the monitor s US input receptacle and the other into the monitor s US2 receptacle Verify the following on the monitor The FHRI value shows three steady dashes The FHR2 value shows three steady dashes The recorder prints the messages US and US2 on the center margin of the strip chart paper Use your finger to rub the face of the ultrasound transducer conn
2. 11 11 2264AAX Button Style Nautilus Tocotranducer Assembly Parts List 11 14 5700GAX Button Style Nautilus Ultrasound Transducer Assembly Parts List 11 15 5700KAX Loop Style Nautilus Ultrasound Transducer Assembly Parts List 11 16 2264DAX Loop Style Nautilus Tocotransducer Assembly Parts List 5 ft cord 11 17 1509 Qwik Connect Plus Legplate Assembly Parts List 11 18 Block Diagrams 2 LIRE LI 11 19 Corometrics 170 Series Revision C 2000947 004 Safety The information presented in this section 1s important for the safety of both the patient and operator and also serves to enhance equipment reliability This chapter describes how the terms Danger Warning Caution Important and Note are used throughout the manual In addition standard equipment symbols are defined This section includes the following important information General Information sse icis derei eem edere e IRR RSS 1 2 Definitions of Terminology inci eae ee ee ae ades 1 3 Monitor Contraindications Warnings and Precautions 1 4 Equipment Symbols 1 222 oua bb EE ete dee 1 9 Revision C 170 Series Monitor 2000947 004 1 1 Safety General Information General Information General Use If the monitor is cold to the touch or below ambient temperature allow it to stabilize before use To ensure patient safety use only part
3. 7 35 Replacing the FECG IUP Board 7 36 Replacing the Membrane Switch 7 37 Replacing a Front Panel 7 40 Servicing the Recorder 7 41 Boot ROM Error Codes gt eee eee eee eee tenes 7 49 Peripheral Devices 8 1 Remote Marks Connectors 8 2 Telemetry Connector 8 3 RS 232 Connectors ces died sos edie oe dee E RR ee 8 4 Maintenance 9 1 Cleanirig E UOS 9 2 Preventative Maintenance Inspection 9 5 Revision C Corometrics 170 Series 7 2000947 004 1 Specifications souls eu ors s 10 1 11 General Monitor eir err RE IRAE de 10 2 Operating Modes iii 2 5 ed eret ete ER 10 3 Strip Chart Recorder 0c cece cece eee eee eee eee eens 10 4 Parts LISIS tes ie esis siete boves 11 1 2000268 188 Model 171 Final 11 2 2000268 189 Model 172 Final 11 5 2001972 037 Model 173 Final 11 8 2001972 038 Model 174 Final
4. bp 1 TH 00 id 4 B 180 1 5 4 E 160 Vi 140 i i 120 sr 100 Figure 7 14 Recorder Test Pattern 7 44 170 Series Monitor Revision C 2000947 004 Serviceable Assemblies Servicing the Recorder Left Right Alignment 1 Print the continuous recorder test pattern See Printing a Continuous Test Pattern above 2 Check the quality of the printed lines Verify that the horizontal lines print evenly Ideally the distance between the right paper guide at the roller and the first line printed by the test pattern should be 0 490 in which represents a nominal value Use a vernier caliper to measure this distance 3 Use the Volume buttons If A or X7 to align the printhead left or right respectively A number between 0 and 255 shows in the FHR display The number increases or decreased as you make adjustments using the Volume buttons IMPORTAN
5. 3 6 Front Panel Connectors c ieee De ERU ethene ee 3 8 Strip Chart Recorder 435 a vas ee Oe eee WES 3 12 Rear Panel Connectors seii ea hei bee a Pe Cee 3 14 Revision C 170 Series Monitor 3 1 2000947 004 Controls Indicators and Connectors Front Panel Controls Front Panel Controls Figure 3 1 Front Panel Controls Model 172 shown Symbol Table 3 1 Front Panel Controls Name Power Record Paper Advance Mark Offset Setup Volume 3 2 170 Series Monitor 2000947 004 Revision C Controls Indicators and Connectors Front Panel Controls Table 3 1 Front Panel Controls M UA Reference A Alarm Silence 3 Power Button and Indicator Pressing the blue Power button turns the monitor on and illuminates the green indicator to the left of the button Pressing the button again puts the monitor in standby and extinguishes the indicator E Record Button and Indicator Pressing the Record pushbutton activates the recorder provided paper is installed the amber indicator illuminates to the left of the button Pressing the button again turns the recorder off and extinguishes the indicator E Paper Advance Button Pressing the Paper Advance button causes the recorder to advance chart paper at a rate of 40 cm min for as long as the button is pressed If the recorder is on twenty seconds after th
6. Table 9 3 Patient to Line Leakage Conditions for US Neutral Ground Power Polarity Closed Closed Normal Closed Closed Reversed Open Closed Normal Open Closed Reversed 9 10 170 Series Monitor Revision C 2000947 004 Maintenance Preventative Maintenance Inspection Patient to Ground Leakage for US2 1 Connect an ultrasound test body to the monitor s front panel US2 input 2 Configure a leakage tester to perform a patient leakage test 3 Turn ON the monitor using the monitor s On Standby button 4 Verify the following 504A 132 253 VAC or at the line voltage at your facility 10 5 Record the patient to ground leakage for the following conditions Table 9 4 Patient to Ground Leakage Conditions for US2 Neutral Ground Power Polarity Closed Closed Normal Closed Open Normal Closed Open Reversed Closed Closed Reversed Open Closed Normal Open Closed Reversed Revision C 170 Series Monitor 9 11 2000947 004 Maintenance Preventative Maintenance Inspection Patient to Line Leakage for US2 1 Connect an ultrasound test body to the monitor s front panel US2 input 2 Configure a leakage tester to perform a line leakage test 3 Turn ON the monitor using the monitor s On Standby button 4 Verify the following O 504A 132 253 VAC or at the line voltage at your facility 10 5 Record the patient to line leakage for the following
7. Revision C 170 Series Monitor 10 3 2000947 004 Specifications Strip Chart Recorder Strip Chart Recorder Table 10 3 Strip Chart Recorder Technical Specifications Heart Rate Scale Domestic International Chart Width 7 cm 8 cm Scaling 30 BPM cm 20 BPM cm Range 30 240 BPM 50 210 BPM Resolution 1 BPM 1 BPM Uterine Activity Scale Strain Gauge Tocotransducer Chart Width 4 cm 4cm Scaling 25 mmHg cm 25 relative units cm Range 0 100 mmHg 0 100 relative units Resolution 1 mmHg 1 relative unit Recorder Drive Speeds 1 2 and 3 cm min Speed Accuracy 1 NOTE Specifications are subject to change without notice 10 4 170 Series Monitor Revision C 2000947 004 Parts Lists This chapter of the manual provides parts lists and block diagrams NOTE GE makes every effort possible to provide the most up to date reference documentation for your Corometrics equipment However in special cases involving field installed upgrades a drawing or parts list in this manual may not reflect the revision level of your unit s subassemblies When discrepancies are found contact the GE Service Department at one of the numbers found on the back cover of this manual Revision C 170 Series Monitor 11 1 2000947 004 Parts Lists 2000268 188 Model 171 Final Assembly 2000268 188 Model 171 Final Assembly Table 11 1 Model 171 Final Assembly 200268 188 Part Number Descri
8. Connect from line to enclosure foil pass fail Conductive Parts Isolated from Live Parts and Enclosure Using DC Voltage for One Minute NOTE The hi pot tester voltage is 2 83 kVdc for these tests IMPORTANT ENCLOSURE Wrap the entire monitor enclosure in aluminum foil avoiding the rear panel connector area for these tests Telemetry Connector Connect from the telemetry connector metal shell to enclosure foil pass fail Power Entry Connector Connect from the power entry connector metal shell to enclosure foil pass fail Revision C 170 Series Monitor 2000947 004 For your notes 9 22 170 Series Monitor Revision C 2000947 004 opecifications This section contains a detailed list of the technical specifications for the 170 Series Monitor This chapter lists specifications for the following General Monitor bee ERI eds ECL ERES 10 2 Operating Maus 1 1 oe opp odori epe dde bor 10 3 Step Chart Recordet os ceste etus Rev Ra hdd 10 4 Revision C 170 Series Monitor 10 1 2000947 004 Specifications General Monitor General Monitor Table 10 1 General Monitor Technical Specifications Category Technical Specifications Power Requirements Nominal Line Voltage 100 230 VAC Line Frequency 50 60 Hz operates over 47 63 Hz Power Consumption maximum 30 VA Monitor DC Input 12 Vdc at 2 5 A Physical Characteristics Height 5 75 in 14 6 c
9. These envelopes are then input to the analog to digital converter U38 Other inputs to the analog to digital converter are the telemetry TOCO signal This signal is scaled and offset to provide 100 to 400 relative UA units Revision C 170 Series Monitor 5 31 2000947 004 Theory of Operation Main Board Theory of Operation Uterine Activity Integrated circuit U33 with a gain of 200 and U34 pin 7 with a gain of 1 25 provide a total gain of 250 for the on board tocotransducer pressure channel The output of U34 pin 7 is offset 0 5 V providing a dynamic range of 80 to 400 relative units Each relative unit represents 20 UV at the input of U33 through resistors R318 and R320 Integrated circuit U42 and its associated components comprise a charge pump that converts the 3 3 V to 3 3 U38 pin 11 U34 pin 1 comprise a 2 5 V reference voltage U71 pin 7 provides a reference voltage which is half the 2 5 V reference called VREF 2 Integrated circuit U56 pin 7 and associated components provides the 4 V required for the tocotransducer Figure 5 19 provides a block diagram of the antepartum uterine activity section Pressure Differential Gain to Data Bus _ o Amplifier Stage Pressure 4 V Reference og PM 2 5 V Telemetry Amplifier Reference Figure 5 19 Antepartum UA Module Block Diagram 5 32 170 Series Monitor Rev
10. Uterine Activity Display This green three digit display indicates the uterine activity values Tocotransducer If uterine activity is measured using a tocotransducer the uterine activity value displays in relative units A plus sign flashes when the uterine activity value exceeds the strip chart range of 100 relative units IUP Models 173 and 174 Only If uterine activity is measured using an intrauterine pressure catheter or a strain gauge pressure transducer the uterine activity value displays in mmHg Table 3 2 Display Connector Summary Monitor Model 171 Model 172 Model 173 Model 174 TOCO Mode US TOCO FECG or IUP Display Q Q Connector 3 6 170 Series Monitor Revision C 2000947 004 Controls Indicators and Connectors Front Panel Displays and Indicators X Alarms Disabled Indicator This yellow indicator illuminates when all alarms have been disabled The indicator is unlit when alarms are enabled Refer to Chapter 4 Setup Procedures for information on enabling disabling alarms A Audio Alarm Indicator Active Patient Alarms For active patient alarms this yellow indicator flashes it continues to flash even if the alarm is silenced Resolved Patient Alarms For resolved patient alarms the indicator continues to flash until you silence the alarm This ensures that the alarm is acknowledged by a clinician Signal Quality Alarms Fo
11. Follow cable preparation procedures earlier in this document Tocotransducer Cable Preparation Ultrasound Transducer Cable Preparation or FECG Cable Preparation Insert pinned wires into corresponding positions in the pin housing according to the wiring table in each of the above listed sections Push in each pin until it bottoms out and is retained by the pin spring fingers which prevent it from backing out of the hole NOTE If a pin is removed from the sprocket housing it must be discarded and replaced Insert remaining pins into unused positions in the pin housing Revision C 170 Series Monitor 7 13 2000947 004 Serviceable Assemblies Transducer Plug Replacement Kits 5 Insert the pin housing into the corresponding recess of the half shell with strain relief mounting holes Position the housing so that the two dots at the back are visible and at right angles to the plane of the half shell Push the cable into the strain relief slot Ensure the slot surrounds a portion of the cable with the outer covering intact 6 Fasten the strain relief clamp to the half shell using the two metric screws Refer to inset of Figure 7 4 Tocotransducer the indent of the strain relief should face outward Ultrasound and FECG Transducers the indent of the strain relief should face inward 7 Place the half shell with tongue on the pin housing aligning it with the two dots on the back of the housing The half
12. This section contains information about configuring a 170 Series Monitor to meet the individual needs of your clinic or hospital Use of the monitor will vary according to the accessories attached to it the clinical applications in which it is used and the personal preferences of the users This chapter lists all available user setup options in the monitor and provides step by step instructions for making selections Loading Strip Chart a XPRESS 4 2 Turning the Monitor On llle ees 4 7 Recorder Test S se PAR Ru I M Rees 4 0 Customizing the 4 10 Printing a Summary of Configuration Settings 4 17 Quick Reference ED EDGE ERA 4 18 Flasher Software Utility Upgrade 4 20 Revision C 170 Series Monitor 2000947 004 4 1 Setup Procedures Loading Strip Chart Paper Loading Strip Chart Paper The required paper for use with the 170 Series Monitor is m catalog number REF 4305AAO CAO HR scale of 30 240 BPM or m catalog number REF 4305BAO DAO HR scale of 50 210 BPM CAUTIONS LOADING PAPER The instructions for loading paper into a 120 or 170 Series Monitor are different than the instructions for loading paper into other Corometrics monitors with which you may be familiar Improper loading can cause paper jams Follow the inst
13. 170 Series Monitor 2000947 004 Serviceable Assemblies Tocotransducer Calibration Large Button Tocotransducer The Corometrics Large Button Tocotransducer must be calibrated using the following procedure for use with the 170 Series Monitor Equipment Required Procedure 9999 Digital voltmeter DMS501 or equivalent with x1 probe or leads Common Mode Rejection CMR Test Jack Refer to Figure 7 7 and Table 7 8 Calibrated 170 Series Monitor Screwdriver or potentiometer adjustment tool 52 5 gram weight cat 7825AA Sealing tape cat no 7730AA Torque seal IMPORTANT WEIGHT TYPE The weight cat no 7825A A is designed specifically for testing large button tocotransducers During this procedure refer to Figure 7 9 for the location of potentiometers in the Trimline tocotransducer NOT USED NN S NN Ri zero CENTER GAIN R S ZERO TRIMS Figure 7 9 Large Button Tocotransducer Potentiometer Locations 1 Remove the nameplate and sealing tape from the top cover of the tocotransducer Set the ZERO TRIM and GAIN potentiometers in the tocotransducer fully counterclockwise Locate TP2 and TP9 ground on the Main Board in the 170 Series Monitor 7 28 170 Series Monitor Revision C 2000947 004 Serviceable Assemblies Tocotransducer Calibration 4 Connect the positive lead of the digital voltmeter to TP2 connect the negative lead to
14. Corometrics 170 Series SERVICE MANUAL MANUAL P N 2000947 004 REV C GE Medical Systems Information Technologies gemedicalsystems com Corometricse 170 Series SERVICE MANUAL MANUAL P N 2000947 004 REV C GE Medical Systems Information Technologies gemedicalsystems com GUARANTEE equipment sold by GE Medical Systems Information Technologies is fully guaranteed as to materials and workmanship for a period of 1 year Information Technologies reserves the right to perform guarantee service operations in its own factory at an authorized repair station or in the customer s installation Our obligation under this guarantee is limited to repairing or at our option replacing any defective parts of our equipment except fuses or batteries without charge if such defects occur in normal service Claims for damage in shipment should be filed promptly with the transportation company correspondence covering the instrument should specify the model and serial numbers GE Medical Systems Information Technologies A GE Medical Systems Company GE Medical Systems Information Technologies will make available on request such circuit diagrams component diagrams component parts lists descriptions calibration instructions or other information which will assist the users or appropriately qualified technical personnel to repair those parts of the equipment which are classified by GE Medical Systems Info
15. Flat Screw Cap Cable Nut Set Screw Cable Nut Set Screw Tocotransducer 2264 GAX HAX JAX KAX LAX MAX Ultrasound Transducer Self Tapping Screws 7 16 170 Series Monitor 2000947 004 Revision C Serviceable Assemblies Nautilus Transducer Cable Replacement Procedure Unplug the transducer from the monitor or telemetry transmitter Use the screw cap extraction tool to pry off the five screw caps Figure 7 5 Discard all caps CAUTION HANDLING Take care not to damage the base sealing groove Remove the five sealing screws and discard Remove the transducer cover and flat seal o ring Discard both items Remove the cable connector according to the transducer type Figure 7 6 Tocotransducer a Ifthe PC board header is on the underside of the board 2264 GAX HA X JAX KAX LAX MAX only remove the three self tapping screws from the board to gain access Set aside screws b Observe the orientation of the cable connector in the PC board header then unplug Ultrasound Transducer a Unscrew the green cable ground wire from the PC board Set aside screw b Unsolder the green and clear cable wires from the PC board Loosen the cable nut set screw then unscrew the cable from the cable nut Set aside screw and cable nut Remove the cable from the transducer base CAUTION CABLE HANDLING Do not place undue stress on cable wires and shielding
16. If this byte is sent immediately following the Monitor ID then the 170 Series Monitor will cancel transmission of all data Limitations The only restriction on the information transmitted during either 115 communication mode occurs when the baud rate is set below 4800 baud Under this condition data loss may occur NOTE The recommended baud rate is 9600 8 14 170 Series Monitor Revision C 2000947 004 Peripheral Devices RS 232 Connectors Error Conditions MONITOR FIRST DATA Nth END OF TYPE DATA FIELD FIELD S DATA FIELD TEXT Transmission Errors Transmission errors may be detected by the external computer as parity errors framing errors no valid stop bit or invalid characters There is no facility in the 170 Series Monitor to re transmit any information found to contain an error It is therefore up to the user to decide what action to take as a result of an error Request Errors These errors apply to the 115 Transmit Receive Mode only Request errors are detected by the monitor as parity errors framing errors and invalid Monitor ID If the monitor fails to respond properly to a request it is suggested that the external computer re transmit a request sequence Figure 8 2 Data Request Format 115 Transmit Receive Mode Only MONITOR RESPONSE MONITOR DATA END OF TYPE TYPE ID FIELD TEXT Figure 8 3 Transmitted Data Format Table 8 3 Response Type and Data Fi
17. o taia bets ERR 7 20 Nautilus Ultrasound Transducer Top Cover Replacement 7 30 Nautilus Transducer 7 32 Testing a Repaired Transducer or 0 7 34 Replacing the Main 7 35 Replacing the Membrane Switch 1 7 37 Replacing a Front Panel Connector RR RR ng 7 40 Servicing the Recorder x 2222 nub tase Shee ERE ec baec 7 41 Revision C 170 Series Monitor 2000947 004 7 1 Serviceable Assemblies General Anti Static Handling Precautions General Anti Static Handling Precautions The following guidelines should be followed when handling circuit boards or assemblies containing circuit boards Following these procedures helps resist damage that can be caused by static electricity 999 Discharge any static charge you may have built up before handling parts Wear a grounded anti static wristband at all times Use a static free work surface Store items in anti static bags or boxes Do not remove items from anti static containers until needed 7 2 170 Series Monitor Revision C 2000947 004 Serviceable Assemblies Transducer Plug Replacement Kits Transducer Plug Replacement Kits Refer to Table 7 2 and ensure you have the correct kit Unpack the kit and ensure it contains the items listed in Table 7 1 If something is missin
18. Connect the positive lead of the digital voltmeter to TP2 on the Main Board connect the negative lead to TP9 4 Turn on the monitor 5 Plug the CMR Test Jack into the monitor s UA connector Measure the voltage across the test points and record the value Replace the CMR Test Jack with the transducer to be calibrated 8 Place the tocotransducer on a flat surface so that the button is face up then center the 52 5 gram weight on the pressure sensitive button 9 Adjust the Offset R5 and Offset Trim R6 potentiometers so that the voltage matches the reading recorded in step 6 0 04 V This voltage is referred to as the weight on voltage The Offset R5 potentiometer provides course adjustment The Offset Trim R6 potentiometer provides fine adjustment 10 Remove the weight and observe the voltage reading this voltage is referred to as the weight off voltage A correctly adjusted transducer will show a voltage change of 40 115 V 0 015 V If the change is less adjust the Gain R15 potentiometer counterclockwise to increase the gain If the change is more adjust the Gain R15 potentiometer clockwise to decrease the gain 11 Repeat step 8 through step step 10 until the change in voltage between the weight on and weight off conditions falls into specification 12 Torque seal all potentiometers 13 Follow the instructions for Nautilus Transducer Reassembly on page 7 32 7 24 170 Serie
19. Do not damage the cable o ring or the hole in the transducer base Feed the connector end of the new cable through the hole in the transducer base The cable o ring should be seated in hole Revision C 170 Series Monitor 7 17 2000947 004 Serviceable Assemblies Nautilus Transducer Cable Replacement 9 Secure the molded strain relief end of the cable in the cable nut a b Place the flat side of the cable nut against the case base Rotate the cable assembly into the cable nut continue threading until the two are completely seated Ensure the o ring is seated in the hole and one of the cable s four set screw holes is centered under the hole in the cable nut Tighten the set screw until flush with the cable nut 10 Connect cable according to transducer type refer to Figure 7 6 Tocotransducer CAUTION PRESSURE SENSITIVE BUTTON Do not turn the pressure sensitive button Doing so will change the button height and affect the tocotransducer calibration Plug the cable connector into the PC board header conforming to the keying observed earlier If removed earlier replace the PC board and tighten the three self tapping screws in the transducer base CAUTION OVERTIGHTENING Do not overtighten the screws Doing so could damage the threads in base Ultrasound Transducer a Solder the green and clear cable wires to the PC board Figure 7 6 b Replace and tighten the green ground w
20. The Model 172 Antepartum Fetal Monitor provides dual ultrasound and external uterine activity monitoring The Model 173 Intrapartum Monitor provides dual heart rate monitoring using FECG and ultrasound The monitor also provides external uterine activity monitoring using a tocotransducer or internal monitoring using an intrauterine pressure catheter IUPC The Model 174 Intrapartum Monitor provides dual heart rate monitoring using FECG ultrasound or dual ultrasound The monitor also provides external uterine activity monitoring using a tocotransducer or internal monitoring using an IUPC Table 2 1 Summary of Features Feature 171 172 173 174 External uterine activity TOCO Y Y 4 Internal uterine activity IUPC v Ultrasound v v Dual ultrasound FECG v Fetal heart rate alarms Y Y Y Fetal movement detection optional v v Heartbeat coincidence Y Fetal heart rate offset 4 v The Model 174 has combi connector for the primary FHR that can be used for either US or FECG Revision C 170 Series Monitor 2 5 2000947 004 For your notes 170 Series Monitor 2000947 004 Revision C Controls Indicators and Connectors This section describes all possible controls indicators and connectors in the 170 Series This section contains the following information Front Panel Controls oot RE UC edad eh 3 2 Front Panel Displays and
21. any changes you made will not be stored in memory NOTE You must exit by pressing the Setup button in order for changes to take effect NOTE If an alarm is in progress when you exit the user setup mode any changes to an alarm setting do not take effect until the alarm condition is resolved Table 4 2 lists the available settings for the user setup mode Table 4 3 lists the available settings for the service setup mode Table 4 4 provides a summary of the factory default settings for both the user and service setup options Revision C 170 Series Monitor 2000947 004 4 13 Setup Procedures Customizing the Monitor Table 4 2 Summary of User Setup Codes Code UA Display Setting or Value Primary FHR Display Code Description FHR Alarms _ 2 FHR High Alarm Limit 140 210 BPM in increments of 5 BPM 3 FHR Low Alarm Limit 50 140 BPM in increments of 5 BPM 4 FHR Alarm Volume 2 10 10 Minutes time setting 0 59 minutes 11 Hours time setting 0 23 hours 12 Day of Month date setting 1 31 day 13 Month date setting 1 12 month 14 Year date setting 00 99 year 4 14 170 Series Monitor 2000947 004 Revision C Setup Procedures Customizing the Monitor Table 4 3 Summary of Service Setup Codes Code UA DISRIAY Setting Or Value Code Code Description Pri
22. is printed on the strip chart paper if you unplug the telemetry receiver from the 170 Series Monitor you turn off the receiver you turn off the transmitter or 999 the receiver does not detect any active mode information from the transmitter Revision C 170 Series Monitor 8 3 2000947 004 Peripheral Devices RS 232 Connectors RS 232 Connectors Two RS 232C serial interface receptacles RJ 45 allow connecting the 170 Series Monitor to the following devices Critikon Model 1846 1846SX Blood Pressure Monitor Quantitative Sentinel Perinatal System Nellcor N 400 Fetal Pulse Oximeter 115 Compatible Device 999 Table 8 1 lists the factory default settings for each port Refer to Customizing the Monitor on page 4 10 for information on using the service setup mode to change these settings Table 8 1 Communication Default Settings RS 232 Port Intended Device Mode Baud Rate 1 QS System HP 1200 2 Critikon Model 1846 1846SX ext BP 600 Baud Rate Mode HP or HP with Notes Ext BP Select a baud rate that is compatible with the external device The available settings 600 1200 2400 4800 9600 19 200 and 384 000 bps Select a communications mode compatible with the external device Select HP or HP w notes for connecting to a Marquette Quantitative Perinatal System or another central system that uses the Hewlett Packard communications protocol HP mode does not print centra
23. 0 002V 100U A Units This corresponds to 2 475 V at U6 pin 1 and 1 2375 Vat U6 pin 5 This causes a delta current of 9 3 LA through R20 which is also transferred across the barrier with the same transfer ratio of 0 85 to 1 05 This current is input to U13 pin 6 through R32 Potentiometer R25 sets the gain at U13 pin 8 to 0 5 V 100UA Units Potentiometer R30 sets the initial offset voltage to 40 5 V The output amplifier U13 pin 8 is a unity gain amplifier with 3 poles of filtering with its 3 dB frequency of 3 Hz Since the system analog to digital converter has an input range of 0 to 2 5 V the dynamic range is from 100 to 400UA Units Revision C 170 Series Monitor 5 37 2000947 004 Theory of Operation FECG IUP Board Theory of Operation FECG Channel Mode Enables The input to the FECG channel is two resistors R42 and R43 with the signal names of RA and LA respectively Resistors R42 R43 R45 and R462 and capacitors C38 through C40 provide RF filtering and in conjunction with diode limiters D3 through D6 provide protection from electro static discharge Resistors R40 R41 and R44 cause amplifier U7 to saturate when the FECG cable is not connected to a fetus This disables the FECG channel from counting noise and flashing LEDs and causing tones to be generated by the speaker Instrumentation amplifier U7 provides a gain of 13 7 which is given by 49 4E3 R54 1 Amplifier U2 pins 5 6 and 7 is an integrator which has
24. 170 Series Monitor 4 9 2000947 004 Setup Procedures Customizing the Monitor Customizing the Monitor User Setup Mode The monitor includes a user setup mode where you can 9999 Service Setup Mode enable disable alarm functionality set the high alarm limit for the fetal heart rate set the low alarm limit for the fetal heart rate set the alarm volume set the time and date The monitor includes a service setup mode where you can access all user setup modes as well as the following 999999 enable disable fetal movement detection if purchased and installed select the language for printing on the strip chart paper set the chart speed select the paper scale choose a communication mode for each rear panel communications port set the baud rate for each communications port select the remote mark annotation style enable disable fetal heart rate offset Models 172 173 and 174 only enable disable ECG artifact elimination Models 173 and 174 only enable disable heartbeat coincidence Models 172 173 and 174 only set the default UA reference value perform a recorder alignment test print the software version number along with a summary of all current configuration settings 4 10 170 Series Monitor Revision C 2000947 004 Setup Procedures Customizing the Monitor Setting or value for selected feature e g Monitor Feature Cod FHR Alarms On or 180 eg FHR Alarms or BPM
25. 2000741 001 LABEL TRANS amp STOR COND 170 SERIES 1 11 10 170 Series Monitor 2000947 004 Revision C Parts Lists 2001972 038 Model 174 Final Assembly 2001972 038 Model 174 Final Assembly Table 11 4 Model 174 Final Assembly 2001972 038 Find Num Item Number Item Description Qty 1 2007385 001 ENCL BOTTOM SHIELDED 170 SERIES 1 2 15451 COVER SPEAKER 1 3 140173 FOOT RUBBER 50D 26H 4 4 15222AA BRG DRAWER 2 5 15212AA PIN BEARING 170 2 6 15200A ASSY ROLLER 1 T 250096 BEARING FLANGED 187 BORE 2 8 11717AA ROLLER GEAR 120REC 1 9 15207 ASSY DRAWER WELDED 1 10 15224AA SPACER DRAWER 1 11 15223AA PLASTIC 9 CM PARTITION 1 12 15231A ASSY PCB SENSOR BOARD 1 13 2000147 001 SENSOR INSULATOR 170 SERIES 1 14 250099 SPRING COMPRESSION 24 OD 38L 1 15 2000222 001 SPRING CPRSN 3 OD 022WIRE SS 2 16 15136A MOTOR STEPPER ASSY 1 17 15202 MOUNT MOTOR 1 18 15201 PLATE PC MOUNTING 1 19 2000133 001 PRINTHEAD 8 DOTS MM 216MM WIDE 1 20 15203AA PLATE HEAD MOUNTING 1 21 2000223 001 SPRING CPRSN 56L 240 OD 024 WIRE 2 22 15204AA BRACKET HEADSTOP 1 23 2002433 001 STANDOFF 1 4 HEX SWAGE 4 40 2 24 281501 NUT HEX 4 40 3 32 X 1 4 2 25 2000234 001 mec RIBBON RECORDER 170 1 26 2000235 001 CABLE ASSY SPEAKER WIRE 170 SERIES 1 27 2000146 001 CLIP GROUND 2 28 2000973 005 PCB ASSY MAIN FECG PRS DUAL U S 174 1 Revision 170 Series Monitor 2000947 004 11 11 Parts L
26. 5 Apply power to the 170 Series Monitor then plug the CMR Test Jack into the monitor s front panel uterine activity connector 6 Measure the voltage at TP2 and record the value 7 Replace the CMR Test Jack with the tocotransducer to be calibrated 8 Place the tocotransducer on a flat surface so that the button is face up then center the 52 5 gram weight on the button 9 Adjust the ZERO TRIM potentiometer so that the voltage measured across TP2 and TP9 matches the reading recorded in step 6 0 005 V This voltage is referred to as the WEIGHT ON voltage NOTE If the ZERO TRIM potentiometer does not provide enough adjustment center the ZERO TRIM potentiometer and adjust the ZERO CENTER potentiometer to match the reading recorded in step 6 1 0 V then use the ZERO TRIM potentiometer to match step 6 0 005 mV 10 Remove the weight and observe the voltage reading this voltage is referred to as the WEIGHT OFF voltage A correctly adjusted transducer will show a voltage change of 0 142 V 0 015 V from the WEIGHT ON to WEIGHT OFF voltage Use the GAIN potentiometer to adjust the GAIN the gain 11 Repeat step 8 to step 10 until the change in voltage between the WEIGHT ON and WEIGHT OFF conditions falls into specification 12 Torque seal all potentiometers Affix new sealing tape and re install the nameplate 13 Refer to Testing a Repaired Transducer TOCO or US on page 7 34 Revision C 1
27. Active low Figure 5 8 Uterine Activity Connector facing the front panel from the outside Revision C 170 Series Monitor 2000947 004 Theory of Operation Functional Overview Table 5 13 Telemetry Connector Signal Type Pin Number Signal Name Relative To Main Signal Description Board 1 TMARK Input Telemetry Mark Line active low 2 TELPR Input Telemetry Present active low 3 NC 171 172 Input No Connection 171 172 TECGEN 173 Telemetry FECG Enable 173 174 4 NC No Connection 5 NC 171 172 Input No Connection 171 172 TECG 173 Telemetry FECG 173 174 6 TTOCO Input Telemetry TOCO 7 AGND Output Analog Ground 8 TELMAUDIO Input Telemetry US Audio 9 DGND Output Digital Ground 10 NC No Connection 11 TTOCOEN Input Telemetry TOCO Enable 12 TUSEN Input Telemetry US Enable 13 NC 171 172 Input No Connection 171 172 TIUPEN 173 Telemetry IUP Enable 173 174 14 NC No Connection 15 NC No Connection 50 40 30 20 10 OR OR OR 9G Figure 5 9 Telemetry Connector facing the rear panel from the outside 5 12 170 Series Monitor 2000947 004 Revision C Theory of Operation Functional Overview Table 5 14 Display Interface J18 Signal Type Pin Number Signal Name Relative To Main Signal Description Board 1 D6 Output
28. Block Diagram 5 40 170 Series Monitor Revision C 2000947 004 Theory of Operation FECG IUP Board Theory of Operation Table 5 20 FECG UA Unisolated Output P16 Models 173 174 Only Signal Type Pin Number Signal Name Relative To Main Signal Description Board 12 V for FECG Isolated Power Supply 1 12 V 173 Output Model 173 only 11 6V 174 11 6 V for FECG Isolated Power Supply Model 174 only 2 GND Output Digital Ground 3 5V Output 5 V Supply 4 7 5V Output 7 5 V Supply 5 2 5VREF Output 2 5 V Reference 6 IUPEN Input IUP Enable Output 7 3 3VANA Output 3 3 V for Analog 8 144KC Output 144 KHz for Isolated Power Supply 9 3 3VANA Output 3 3 V for Analog 10 AGND Output Analog Ground 11 FECGOUT Input FECG Analog Output 12 PRESSOUT Input Pressure Analog Output 13 FECGEN Input FECG Enable 14 CLR Output rc e Line 15 TOCOEN Input TOCO Enable 16 US1EN Input prs Active low Revision C 170 Series Monitor 5 41 2000947 004 Theory of Operation FECG IUP Board Theory of Operation Table 5 21 FECG UA Isolated Output P15 Models 173 174 Only Signal Type Pin Number Signal Name Relative To Main Signal Description Board 1 RA Output Right Arm Input from Patient Connector 2 LA Output Left Arm Input from Patient Connector 3 RL Input Right Leg Drive Signal from FECG Board 4 SHIE
29. Connectors 3 8 Strip Chart Recorder uris cn eter Aa ete 3 12 Rear Panel Connectors 3 14 Setup Procedures 2 9 ai RSEN que Pace oir 4 1 Loading Strip Chart Paper 4 2 Turning the Monitor 4 7 Revision C Corometrics 170 Series 5 2000947 004 Monitor Self Test Routines 4 8 Customizing the 4 10 Quick Reference Card Amreen ti AT A a A EE A 4 18 Flasher Software Utility Upgrade 4 20 Theory of Operation 5 1 Functional Overview 5 2 Main Board Theory of Operation 5 17 FECG IUP Board Theory of Operation 5 36 Functional Checkout Procedure 6 1 Equipment Required i sacs IH 6 2 General ak Son VE IA VIEN BE UVP DIE ne I 6 3 Monitor Self Test 2 0 0 nnn 6 4 Front Panel Pushbutton Test 6 5 Connecting the 6 6 FECG Test 5 veneti eee Hec ee Lees 6 7 L
30. ENCL BOTTOM SHIELDED 170 SERIES 1 2 15451AA COVER SPEAKER 1 3 140173 FOOT RUBBER 50D 26H 4 4 15222AA BRG DRAWER 2 5 15212AA PIN BEARING 170 2 6 15200A ASSY ROLLER 1 T 250096 BEARING FLANGED 187 BORE 2 8 11717AA ROLLER GEAR 120REC 1 9 15207 ASSY DRAWER WELDED 1 10 15224AA SPACER DRAWER 1 11 15223AA PLASTIC 9 CM PARTITION 1 12 15231 ASSY PCB SENSOR BOARD 1 13 2000147 001 SENSOR INSULATOR 170 SERIES 1 14 250099 SPRING COMPRESSION 24 OD 38L 1 15 2000222 001 SPRING CPRSN 3 OD 022WIRE SS 2 16 15136A MOTOR STEPPER ASSY 1 17 15202AA MOUNT MOTOR 1 18 15201AA PLATE PC MOUNTING 1 19 2000133 001 PRINTHEAD 8 DOTS MM 216MM WIDE 1 20 15203AA PLATE HEAD MOUNTING 1 21 2000223 001 ERE 56L 240 OD 2 22 15204AA BRACKET HEADSTOP 1 23 280201 STANDOFF 1 4 1 8SL 4 4 0 THD 2 24 281501 NUT HEX 4 40 5 64 X 1 4 2 25 2000234 001 d RIBBON RECORDER 1 26 2000235 001 CENE SPER IRE 1 27 2000146 001 CLIP GROUND 2 Revision C 170 Series Monitor 2000947 004 Parts Lists 2000268 189 Model 172 Final Assembly Table 11 2 Model 172 Final Assembly 2000268 189 Continued Nur Part Number Description Qty 16269 DUALUSCOMP 29 284105 SCREW 4 PH 1 4L THD FORM 7 30 284072 SCR 4 40 5 16L PHL LL STRIP 29 31 284285 3 16 PHIL 2 5 4 288518 WvLoK PATCH i 33 2000220 001 SCR PH 2 1 2L PHIL ZPS PLASTITE 2 34 2000221 001 SCR 4 PH 1 4L TYPE F PHIL ZPS 6 35 2000142 001 SPRING FRO
31. Equipment Required Phillips screwdriver Digital voltmeter 30 20 W 5 resistor Procedure CAUTION RECORDER STATUS Ensure the recorder remains off during this procedure 1 Remove the AC line cord from the monitor to completely remove power 2 Follow the instructions for Removing the Monitor Top Cover on page 7 19 including disconnection of the display board cable and the membrane switch panel cable from the main board 3 Disconnect the printhead cable from J1 on the main board 4 Locate resistor R562 and potentiometer R507 on the main board 5 Attach the leads of the digital voltmeter across R562 6 Re connect the AC adapter cord to the monitor and turn on the monitor 7 Measure the voltage across R562 and record the value 8 Turn off the monitor 9 Attach a 30 Q 20 W 5 resistor across R562 10 Turn on the monitor 11 Adjust potentiometer R507 until the voltage across R562 is 0 5 V less than the voltage recorded in step 5 12 Turn off the monitor and remove the voltmeter leads and the 30 Q resistor 7 42 170 Series Monitor Revision C 2000947 004 Serviceable Assemblies Servicing the Recorder Aligning the Printhead Equipment Required Phillips screwdriver Vernier caliper Printing a Continuous Test Pattern 1 2 Front Back Alignment Re connect the AC adapter cord to the monitor T Access the service setup mode press and hold the Setup butt
32. FECG Out Connector Figure 5 21 FECG IUP Board Interface Block Diagram Revision C 170 Series Monitor 5 35 2000947 004 Theory of Operation FECG IUP Board Theory of Operation FECG IUP Board Theory of Operation Isolated Power Supply Patient isolation for the FECG and the IUP catheter is accomplished by providing floating power supplies to power the FECG and IUP front end electronics Integrated circuit U12 provides non overlapping drive signals to dual FET U9 which in turn drives the primary of transformer T1 Resistor R94 and capacitor C12 provide dampening for the primary of T1 so as to limit the voltage at the drains of U9 to a level below their breakdown voltage The frequency at which the primary of T1 is switched is 35968 75 Hz which is derived by dividing the signal 144 kHz by four The actual frequency of this signal is 143875 Hz and is derived from the PAL U50 in the ultrasound circuit Thus the transformer switching frequency is synchronized to the ultrasound circuit The secondary of transformer T1 drives rectifiers D9 and D10 These rectifiers are filtered by C8 and C10 for the positive power supply and by C9 and C11 for the negative power supply Integrated circuit U3 and its associated components provide a regulated positive voltage 10 V for Model 173 9 3 V for Model 174 while integrated circuit U4 provide a regulated negative voltage 10 V for Model 173 9 3 V for Model 174 Integrated circuit U1 is a positive preci
33. Figure 3 6 Strip Chart Recorder The strip chart recorder is located on the right side of the front panel Latches on each side of the recorder open the paper drawer Two styles of paper are available 30 240 BPM scale and 50 210 BPM scale Refer to Chapter 4 Setup Procedures for instructions on loading strip chart paper into the recorder One or two fetal heart rate trends print in the top or left grid of the strip chart paper depending on your model monitor and the active modalities If only one fetal heart rate is being monitored the FHR trend is printed in black If twins are being monitored the primary trend is printed in plain black while the secondary trend is bolded Refer to the 170 Series Operator s Manual for additional information about fetal heart rate trends and annotations 3 12 170 Series Monitor Revision C 2000947 004 Controls Indicators and Connectors Strip Chart Recorder Uterine Activity Grid Annotation Area The uterine activity trend prints in black on the bottom or right grid of the strip chart paper Refer to the 170 Series Operator s Manual for more information about uterine activity trends and annotations An annotation area is provided between the fetal heart rate and uterine activity grids Revision C 170 Series Monitor 3 13 2000947 004 Controls Indicators and Connectors Rear Panel Connectors Rear Panel Connectors CONNECT TO T GE ME
34. Impedance Differential Common Mode Mains Frequency Rejection Leakage Current Isolation Mains to Patient Peak detecting beat to beat cardiotachometer 30 240 BPM 1 BPM Selectable x25 BPM artifact rejection 15 uV to 2 mV peak to peak 300 mVdc maximum 20 V peak to peak 1 100 Hz gt 120 dB at mains frequency with patient cable gt 110 dB at mains frequency lt 10 p V peak to peak gt 10 MQ gt 20 MQ gt 40 dB lt 60 pA at 254 VAC electrically isolated gt 4 kVAC Ultrasound Mode Technique Transducer Type Pulse Repetition Frequency Pulse Duration Transmitter Frequency Spatial Average Temporal Average Intensity Focal 20 dB Beam Area Peak Instantaneous Intensity Peak Negative Acoustic Pressure Heart Rate Counting Range Leakage Current Pulsed Doppler with autocorrelation processing 9 crystal 2 kHz all modes 92 us 1 151 MHz lt 5 mW cm 16 6 cm at a range 7 cm 1 8 mWicm p 10 0 kPa 50 210 BPM Complies with IEC 601 1 and or IEC 601 1 1 harmonized national standard Uterine Activity Mode Range Resolution Bandwidth Excitation Voltage Zero Set Temperature Drift Leakage Current Strain Gauge Tocotransducer 0 100 mmHg 0 100 relative units 1 mmHg 1 relative unit dc to 3Hz dc to 0 5 Hz 4 0 Vdc lt 0 1 mmHg C 0 013 kPa C excluding transducer Complies with IEC 601 1 and or IEC 601 1 1 harmonized national standard
35. Model 325 Simulator 14203A B m Monitor Interconnect Cable 14212A B Dual Heart Rate US US2 m Two Model 325 Simulators 14203A B with two sets of Monitor Interconnect Cables 14212 or m Two Nautilus Ultrasound Transducers 5700GAX 5700MAX Series Alarms m Model 325 Simulator 14203A B m Monitor Interconnect Cable 14212A B 170 Series Monitor Revision C 2000947 004 Functional Checkout Procedure General General Between Factory Service visits it 1s necessary that the proper operation of each monitor be verified by performing the functional checkout procedure described in this section This procedure should be completed prior to initially placing the monitor on a patient when monitor performance needs to be verified on a semi annual basis or more frequently as dictated by your equipment maintenance and management policies NOTE Read each step of this procedure thoroughly before actually performing the test Visually inspect the monitor patient cables and other accessories for cracks fissures or other signs of wear or damage Do not use any monitor or accessory which appears to be worn or damaged If unsure contact your GE Service Representative to arrange for evaluation replacement or repair of the suspect item s Revision C 170 Series Monitor 6 3 2000947 004 Functional Checkout Procedure Monitor Self Test Monitor Self Test The 170 Series Monitor contains test
36. Monitor 4 GND Signal Ground 5 GND Signal Ground 6 TXD Transmit Data Output from Monitor rd CTS Clear to Send Input to Monitor 8 5V 200 mA Fused Table 8 7 RS 232 Connector 2 Pin Number Signal Name Signal Description 1 GND Signal Ground 2 RTS Request to Send Output from Monitor 3 RXD Receive Data Input to Monitor 4 GND Signal Ground 5 GND Signal Ground 6 TXD Transmit Data Output from Monitor 7 CTS Clear to Send Input to Monitor 8 GND Signal Ground 1 8 234567 Figure 8 4 RJ 45 Connector facing the rear panel from the outside 8 18 170 Series Monitor 2000947 004 Revision C Peripheral Devices RS 232 Connectors 170 SERIES MONITOR SIDE DATA TERMINAL EQUIPMENT DTE SIDE 8 PIN SIGNAL NAME SIGNAL NAME 25 PIN 9 PIN 6 PIN 6 TXD TXD 2 3 2 3 RXD _ RXD 3 2 5 2 RTS RTS 4 7 1 7 CTS E m CTS 5 8 6 4 GND Figure 8 5 Standard Null Modem Cable 170 SERIES MONITOR SIDE DATA TERMINAL EQUIPMENT DTE SIDE 8 PIN SIGNAL NAME SIGNAL NAME 25 PIN 9 PIN 6 PIN 6 TXD TXD 2 3 5 3 RXD RXD 3 2 2 2 RTS RTS 4 7 1 7 CTS CTS 5 8 6 4 GND 5 GND Figure 8 6 Standard Normal Modem Cable Revision C 170 Series Monitor 8 19 2000947 004 For your notes 8 20 170 Series Monitor Revision C 2000947 004 Maintenance equipment no matter how reli
37. Monitor Revision C 2000947 004 Serviceable Assemblies Replacing the Membrane Switch Panel Replacing the Membrane Switch Panel The membrane switch panel cannot be removed from the top cover without possible damage to the monitor You must order a new top cover assembly in order to replace the membrane switch panel Equipment Required 9999999 Phillips screwdriver Wrench Hand file Top cover Rear panel label Display overlay Rear panel adhesive gasket Membrane switch panel Refer to Table 7 13 for order numbers Table 7 13 Top Cover Assembly Order Numbers Item Model 171 Model 172 Model 173 Model 174 Top Cover 2004993 0032 2004993 001 2004993 002 2004993 004 Rear Panel Adhesive Gasket 14561AA Rear Panel Label 2003930 001 Membrane Switch Panel 15323BA 15323AA Display Overlay 15324BA 15324AA 15324CA 15324DA Replaces older 15453 top covers b Replaces older 15453AA top covers b Replaces older 15453BA top covers d Replaces older 15453DA top covers Revision C 170 Series Monitor 7 37 2000947 004 Serviceable Assemblies Replacing the Membrane Switch Panel Procedure 1 Disconnect the AC adapter from the monitor to completely remove power 2 Follow the instructions for Removing the Monitor Top Cover on page 7 19 3 Unscrew the top cover standoff and set aside You may need a wrench to loosen the standoff 4 Remove the two
38. No Connection 12 RL Right Leg Active low Figure 5 6 FECG Connector facing the front panel from the outside Revision C 170 Series Monitor 2000947 004 5 9 Theory of Operation Functional Overview Table 5 11 Ultrasound FECG Combi Connector Model 174 Pin Signal Name Signal Description 1 NC No Connection 2 FECGEN Enable for FECG Channel 3 ISOGND Isolated Ground 4 XMIT RCV SHIELD Shield for Transmit Receive isolated ground 5 XMIT RCV Transmit Receive isolated ground 6 LA Left Arm 7 RA Right Arm 8 SHIELD Shield isolated ground 9 NC No Connection 10 NC No Connection 11 U S ENABLE Enable for Ultrasound Channel 12 RL Right Leg Active low Figure 5 7 US FECG Combi Connector facing the front panel from the outside 5 10 170 Series Monitor 2000947 004 Revision C Theory of Operation Functional Overview Table 5 12 Uterine Activity Connector Pin Signal Name Signal Description 1 PRESSURE Positive Input to Pressure Amplifier 2 PRESSURE Negative Input to Pressure Amplifier 3 NC No Connection 4 E UM 4 Volt Reference 5 NC No Connection 6 4 Volt Reference Ground 7 UA SHIELD Shield 8 NC No Connection 9 NC No Connection 10 NC No Connection T NC 171 172 No Connection 171 172 IUP ENABLE 173 174 Mode Enable for IUP 173 174 12 TOCO ENABLE Mode Enable for TOCO
39. The FHRI heartbeat indicator C2 flashes for each input signal The ECG beep is heard from the rear panel speaker The trend does not indicate any oscillation Access the Service Setup Mode and disable ECG Artifact Elimination Set the simulator s ECG Rate switch to the MANUAL position and the Manual Adjustment knob to the fully counterclockwise position Disconnect the ECG simulator sub cable from the monitor s FECG receptacle Verify the following on the monitor The FHRI value is blank The FHRI trend stops plotting on the strip chart paper After approximately 30 seconds the message CARDIO INOP prints on the center margin of the strip chart paper Set the simulator s ECG Mode switch to the OFF position Revision C 170 Series Monitor 6 9 2000947 004 Functional Checkout Procedure FECG Test F 240 bpm 210 180 150 120 4 NER 120 90 90 60 60 1 30 30 15 41 05 AUG 97 FECG 3 CM MIN 100 Ec EHE I 8 e 2 2 kPa U
40. This is tested in steps 14 to 16 for a high alarm and steps 22 to 24 for a low alarm Unsilenced Resolved Threshold Alarm If a threshold alarm condition is resolved prior to be silenced clinical acknowledgement the visual and audible indications both remain present Press the Alarm Silence button to cancel both the audible and visual indications This is tested in steps 17 to 19 for a high alarm and 25 to 27 for a low alarm NOTE For continuous limit violations a high alarm activates after 5 minutes a low alarm activates after 30 seconds 6 18 170 Series Monitor 2000947 004 Revision C Functional Checkout Procedure Uterine Activity Test Uterine Activity Test This portion of the functional checkout procedure tests the uterine activity section of the 170 Series Monitor 1 Set the switches on the Model 325 Simulator according to Table 6 5 2 Connect the simulator s UA sub cable to the UA receptacle on the monitor 3 Access the service setup mode and note the UA reference default value The monitor is shipped from the factory with this value set at 10 relative units however your unit may have been custom configured Exit the service mode 4 Press the monitor s Power button to turn on the monitor 5 Press the monitor s Record pushbutton 6 Briefly press the monitor s UA Reference pushbutton Verify the following on the monitor The UA value matches the default setting Th
41. approximately 120 BPM Verify the following on the monitor The FHRI value is 120 BPM FHRI heartbeat indicator J flashes at a rate of 120 times per minute The ECG beep volume of the rear panel speaker can be increased or decreased using the Volume buttons Set the volume to the desired level The recorder prints a continuous line at 120 BPM on the strip chart paper Revision C 170 Series Monitor 6 7 2000947 004 Functional Checkout Procedure FECG Test Table 6 2 Model 325 Simulator Settings for FECG Test Section Switch Setting Main RATE Rate MANUAL FECG MECG Mode FECG QRS Amplitude 15 QRS Polarity GENERAL Pattern Memory OFF Main CMR UA Mode TOCO 10 11 12 Repeat step 5 for each of the following rates 60 210 and 240 BPM Change the simulator s QRS Polarity switch from to Verify that the monitor does not skip any beats Set the simulator s ECG Rate switch to the RAMP setting Verify that the monitor s FHR1 value counts between approximately 30 and 240 BPM and that the trend is a ramp between the same values on the strip chart paper See Figure 6 1 Access the Service Setup Mode and disable ECG Artifact Elimination Set the simulator s ECG Rate switch to the A15 position Verify the following on the monitor The FHRI value oscillates by 15 BPM The FHR heartbeat indicator C2 flashes for each
42. associated equipment every twelve months thereafter each time the main enclosure is disassembled or a circuit board is removed tested repaired or replaced and record the date and results in a Maintenance Repair Log These instructions are intended for every component in the system WARNING MAINTENANCE SCHEDULE Failure to implement a satisfactory maintenance schedule may cause undue equipment failure and possible health hazards Unless you have an Equipment Maintenance Contract GE does not in any manner assume the responsibility for performing the recommended maintenance procedures The sole responsibility rests with the individual or institution using the equipment GE service personnel may at their discretion follow the procedures provided in this manual as a guide during visits to the equipment site Electrical safety tests may be performed under normal ambient conditions of temperature humidity and pressure Revision C 170 Series Monitor 9 7 2000947 004 Maintenance Preventative Maintenance Inspection Unit to Primary Leakage 1 Configure a leakage tester to perform a unit AC line leakage test 2 Tum ON the monitor using the monitor s On Standby button 3 Verify the following 1 300 uA 132 253 VAC or at the line voltage at your facility 10 4 Record the primary leakage for the following conditions Table 9 1 Unit to Primary Leakag
43. at 250 Hz The nominal gain in the system is approximately 36 dB and is controlled by R454 The Channel 1 main filter is comprised of U51 and associated components Revision C 170 Series Monitor 5 29 2000947 004 Theory of Operation Main Board Theory of Operation Filtering Ultrasound Audio The main filter is a band pass amplifier with 3 dB points at 120 Hz and 300 Hz respectively The band width slopes are greater than 40 dB octave The maximum gain of the filter is 46 dB with peaking of approximately 48 dB at 250 Hz The nominal gain in the system is approximately 36 dB and is controlled by R454 The Channel 1 main filter is comprised of U51 and associated components The output of the track and hold circuit of Channel 2 at U46 pin 1 is connected directly to the Channel 2 main filter The main filter is a band pass amplifier with 3 dB points are 120 Hz and 300 Hz respectively The band width slopes are greater than 40 dB octave The maximum gain of the filter is 46 dB with peaking of approximately 48 dB at 250 Hz The nominal gain in the system is approximately 36 dB and is controlled by R467 The Channel 2 main filter is comprised of U52 and associated components Integrated circuit U40 switches the output of either the Channel 1 demodulator the Channel 2 demodulator or telemetry audio to the fetal movement band pass filter This filter has a gain of 3 5 and corner frequencies of 15 Hz and 39 Hz respectively It is compris
44. board part no 2000243 Model 171 part no 15269 Model 172 part no 2000324 Model 173 part no 2000973 Model 174 Disconnect the AC adapter from the monitor to completely remove power Remove the monitor top cover disconnecting the display board cable and membrane switch panel cable from J18 and J19 respectively Disconnect the sensor board cable from J3 on the main board Disconnect the printhead cable from J1 on the main board Disconnect the motor cable from J2 on the main board Disconnect the speaker cable from J4 on the main board Remove the nine mounting screws from the main board and carefully place the board on an anti static surface For Models 173 174 you will need to transfer the FECG IUP Board to the new Main Board Remove the four mounting screws then carefully detach the FECG IUP Board from J15 and J16 on the Main Board Carefully align the FECG IUP Board onto J15 and J16 on the new Main Board and push into place Secure to the stand offs with the four screws removed earlier Position the new board in place and follow steps 1 7 in reverse Revision C 170 Series Monitor 7 35 2000947 004 Serviceable Assemblies Replacing the FECG IUP Board Replacing the FECG IUP Board Follow the instructions for Replacing the Main Board on page 7 35 with the following exceptions Retain the existing Main Board Mount a new FECG IUP Board onto the existing Main Board 7 36 170 Series
45. buttons controls the audio for the mode shown in the secondary FHR display When the monitor is in setup mode user or service the volume buttons change the setting or value shown in the FHR display or the monitor feature code shown in the UA display For Models 172 173 and 174 only the leftmost volume controls are active during setup mode 3 4 170 Series Monitor Revision C 2000947 004 Controls Indicators and Connectors Front Panel Controls UA Reference Button A The UA Reference button is used to set the uterine activity pressure reference This button is also used during setup Setting a Baseline for External Monitoring Tocotransducer Briefly pressing the UA Reference button sets the pressure baseline at a preset default The monitor is shipped from the factory with a default setting of 10 relative units Qualified service personnel can access a service screen to set the default to 5 10 15 20 or 25 relative units Pressing this button for more than two seconds causes the uterine activity reference value to override the default setting and cycle through all available selections 5 10 15 20 or 25 relative units starting at the default setting until the button is released While the button is held down the strip chart tracing remains unchanged Once the button is released the recorder trace takes on this new value This value is stored as the new baseline for the currently measured uterine activity
46. display board bracket screws Set aside the display board and Screws 5 Remove the screw fastening the membrane shield tongue Set aside the screw 6 Remove the rear panel plug in J4 and set aside 7 Newer monitors have top covers with tabs which fit into corresponding slots in the bottom enclosure Refer to Figure 7 12 and Figure 7 13 If you are installing a newer tabbed top cover onto an older bottom enclosure without slots you must remove the tabs Use a small hand file or other tool to remove the plastic tabs 8 Apply the new membrane switch panel peel off the adhesive backing and position on the new top cover making sure the shield tongue is threaded through the slot IMPORTANT SHIELD TONGUE If the shield tongue is caught between the top cover and the switch panel the panel cannot be properly positioned 9 Screw the shield tongue in place using the old screw 10 Replace the display board and secure all four screws 11 Replace the top cover standoff 12 Install the rear panel gasket on the inside of the cover remove the adhesive backing and align over the rear panel connectors 13 Install the display overlay remove the adhesive backing and align on the outside of the top cover 14 Install the rear panel label on the outside of the cover remove the adhesive backing and align over the rear panel connectors 15 Re connect the display board and membrane switch panel cables to J18 and J19 on the main board 16
47. front panel Paper Advance pushbutton and verify that the recorder paper advances at a rate of 36 cm min 7 Pressthe Paper Advance pushbutton again and verify that the recorder prints the message 1 CM MIN 8 Access the service setup mode and set the recorder speed to 3 cm min 9 Press the Setup button to exit the service setup mode 10 Press the monitor s Power button to turn the monitor back on 11 Verify that the recorder paper advances at a rate of 3 cm min and that after approximately 40 seconds the message 3 CM MIN prints on the recorder paper The time date and monitoring modes also print again 12 Press the Mark button and verify that an event mark T prints on the bottom two lines of the recorder paper Revision C 170 Series Monitor 6 5 2000947 004 Functional Checkout Procedure Connecting the Simulator Connecting the Simulator This part of the procedure prepares the simulator for use NOTE You must use a Model 325 Simulator for the functional checkout procedure Monitors in the 170 Series do not work with Model 305 Simulators Ensure the Model 325 Power switch is in the off position 2 Connect the Model 325 Simulator s power cord to the power receptacle on the rear panel of the simulator plug the other end of the power cord into a properly grounded wall outlet of appropriate voltage 3 Ensure the 170 Series Monitor is turned off 4 Connect the simulator interconnect cable s 50 pin end t
48. high gain at DC with reducing gain as frequency increases Amplifier U2 pin 7 drives amplifier U2 pin8 Amplifier U2 pin 8 is non inverting and is patient protected in the event of a failure of this device The two sections of U2 provide the right leg drive circuit The right leg drive is a feedback circuit that provides drive in the opposite polarity to a common mode voltage Its purpose is to cancel DC offset from the electrode and to help reject 50 and 60 Hz components The output of U7 which is inverting with respect to the signal RA drives the non inverting amplifier U2 pin 12 through a high pass filter of 10 Hz Resistor R58 and diode D7 provide voltage limiting at U2 pin 12 This amplifier has a gain of 22 5 and rolls off at approximately 224 Hz The output of U2 pin 14 drives U8 pin 3 through R64 Resistor R64 and diode D8 provide voltage limiting at U8 pin 3 This amplifier has a gain of 22 5 and rolls off at approximately 224 Hz The composite bandwidth and gain at this point is from 10 Hz to 320 Hz witha gain of 6936 The output of U8 pin 1 drives amplifier U8 pin 5 with a division of 10 11 formed by resistors R67 and R68 The operation of this amplifier is best understood if analyzed from its quiesent condition of no input signal Under this condition U8 pin 5 is at zero volts therefore U8 pin 6 must also be at zero volts This forces a quiesent current of 75 uA through R69 This current is produced by U8 pin 7 d
49. mode user or service as follows User To enter the user mode Press the monitor s Power button to turn on the monitor Wait until the monitor completes the self test routine and enters the normal operating mode Press and hold the Setup button setup mode H for three seconds to enter the user Service To enter the service mode Press and hold the Setup button Press and hold the blue Power button C Release both buttons The service mode is now activated 2 Usethe UA Reference button M to toggle between the setup code shown in the UA display and the setting or value shown in the primary FHR display The UA display is active when the qualifier illuminates the FHR display is active when the heartbeat indicator C illuminates 3 Use the Volume buttons l to increase A or decrease V the code value or setting shown in the active display Refer to Table 4 2 user codes or Table 4 3 service codes For Models 172 173 and 174 use the leftmost set of volume controls 4 Repeat steps 2 and 3 until all settings are configured 5 Press the Setup button mode returns to the monit monitor to standby to exit the setup mode Exiting the user setup g mode exiting the service setup mode turns the 4 12 170 Series Monitor Revision C 2000947 004 Setup Procedures Customizing the Monitor NOTE If you press the Power button to exit the setup mode user or service
50. no REF 2003005 001 is designed specifically for testing Nautilus Tocotransducers You will need the following equipment Phillips Head Torque Driver Screw Cap Extraction Tool cat no 2004084 001 Digital Voltmeter DM501 or equivalent with x1 probe or leads Common Mode Rejection CMR Test Jack Figure 7 7 and Table 7 8 Potentiometer Adjustment Tool 52 5 gram Weight cat no 2003005 001 Torque Seal Loctite Adhesive 7454 recommended Anti Static Wristband Static Free Work Surface Calibrated 170 Series Monitor Disassembly CAUTION HANDLING Take care not to damage the transducer base sealing groove 1 Turn off the monitor 2 Unplug the transducer from the monitor 3 Use the screw cap extraction tool to pry off the five screw caps Figure 7 5 Discard all caps 4 Remove the five sealing screws and discard 5 Remove the transducer cover and flat seal o ring Discard both items 7 22 170 Series Monitor Revision C 2000947 004 Serviceable Assemblies Tocotransducer Calibration Calibration for Cat No REF 2264 GAX HAX JAX KAX LAX MAX Refer to Figure 7 6 during calibration 1 2 10 11 12 Set the Gain R11 and Offset R6 potentiometers fully clockwise Connect the positive lead of the digital voltmeter to TP2 on the Main Board connect the negative lead to TP9 Turn on the monitor Plug the CMR Test Jack into the monitor s UA connector Measure the vol
51. not pull on cables when removing transducer plugs from the monitor front panel connectors remove plugs by grasping the gripper You will need the following equipment Green Stranded Wire approximately 6 inches 24 AWG for tocotransducers and ultrasound transducers 26 AWG for FECG cable legplates 26 AWG Blue Stranded Wire approximately 4 inches for FECG Cable Wire Cutter Stripper Soldering Iron and Solder Shrink Tubing Oetiker Pincers for Nautilus Tocotransducers only The color green is specified for consistency with factory builds and the wiring charts contained in this document 2 This tool is required to place an Oetiker clamp a 2264 Series Nautilus Tocotransducer You order the Standard Pincers No 1098 or Side Jaw Pincers No 1099 from Oetiker Inc P O Box 93 Livingston NJ 07039 The telephone number is 201 992 1920 170 Series Monitor Revision C 2000947 004 Serviceable Assemblies Transducer Plug Replacement Kits Tocotransducer Cable Preparation Refer to Figure 7 1 and Table 7 3 while following these steps l 10 11 12 13 14 15 16 Cut 24 AWG green wire not supplied to 1 16 inches long and strip each end 14 inch This will be used as a jumper wire Cut 24 AWG green wire to 2 inches long Strip one end 34 inch Route the transducer cable through the gripper Slide the gripper followed by the retaining ring down the cable until they ar
52. routines which verify the unit s calibration and internal circuitry These routines are initiated by each time the monitor is turned on The test results are printed on the strip chart recorder paper verifying the integrity of the unit This information is covered in detail in Monitor Self Test Routines on page 4 8 6 4 170 Series Monitor Revision C 2000947 004 Functional Checkout Procedure Front Panel Pushbutton Test Front Panel Pushbutton Test This procedure ensures the functionality of the front panel pushbuttons 1 Disconnect all transducers from the front panel 2 Enter the service setup mode see page 4 10 and set the recorder speed to 1 cm min 3 Press the Setup button to exit the setup mode 4 Pressthe monitor s Power button to turn on the monitor 5 Press the monitor s Record button and verify the following The yellow indicator next to the button illuminates continuously The recorder paper advances at a rate of 1 cm min The recorder prints the correct time and date information on the strip chart paper If an incorrect time or date is listed refer to Chapter 4 Setup Procedures in this manual The recorder prints the messages CARDIO INOP and UA INOP indicating that no ultrasound or uterine activity transducers are plugged into the front panel US US2 or UA connectors The recorder prints the message 1 CM MIN indicating the selected chart speed 6 Press the monitor s
53. s Power button to turn the monitor back on IMPORTANT TRIMLINE TOCOTRANSDUCERS If you are using an older Trimline Tocotransducer for this test be advised of the following If the monitor is on when you connect or re connect a Trimline Tocotransducer to the UA connector you must wait at least 10 seconds before pressing the UA Reference button If the monitor is off you must wait at least 10 seconds from the time the monitor 18 powered on 6 Momentarily press the monitor s UA Reference pushbutton Verify the following The UA value shows the default setting The recorder prints the messages UA REF and TOCO on the strip chart paper 7 Apply gentle pressure to the tocotransducer diaphragm and verify that the UA value responds to the pressure input Increasing force should produce an increasing value and vice versa 8 Remove the tocotransducer from the monitor s UA input receptacle Verify the following on the monitor The UA value is blank The recorder stops printing the uterine activity trace The recorder prints the message UA INOP on the center margin of the strip chart paper after approximately 20 seconds Revision C 170 Series Monitor 6 21 2000947 004 Functional Checkout Procedure Strain Gauge Transducer Test Strain Gauge Transducer Test Inspect a strain gauge as follows Unscrew the plastic dome from the transducer and check for any cracks or contaminants on the transducer Vis
54. signal Setting a Baseline for Internal Monitoring IUPC Setup Mode Pressing the UA Reference button sets the pressure baseline at 0 mmHg NOTE IUPC monitoring is only available on Models 173 and 174 When the monitor is in setup mode the UA Reference button selects the active display Pressing the button alternates between the UA display which shows a monitor feature code and the FHR display which shows the setting or value for the selected feature code When the UA display is active the sign lights When the FHR display is active the heartbeat indicator J lights A Alarm Silence Button FEES This button is yellow for easy recognition Pressing the Alarm Silence button removes the audible indication of an individual fetal heart rate alarm NOTE Silencing an alarm does not affect the visual indications Revision C 170 Series Monitor 3 5 2000947 004 Controls Indicators and Connectors Front Panel Displays and Indicators Front Panel Displays and Indicators Fetal Heart Rate Display s and Indicator s FHR Display A three digit yellow numeric display indicates the fetal heart rate in beats per minute The value flashes during an alarm condition Heartbeat Indicator A yellow heart shaped indicator flashes with each detected valid heartbeat for the fetal heart Primary Versus Secondary Models 172 173 and 174 only Refer to Table 3 2 for a summary of display positions relative to connectors
55. slope of 12dB octave The output of U11 pin 14 is high pass filtered at 72 Hz by C52 R231 to the audio power amplifier The audio power amplifier U12 is a bridge type configuration with a gain of 2 5 and capable of delivering 1 5 W of power into 8 Figure 5 18 provides block diagram of the audio module 5 30 170 Series Monitor Revision C 2000947 004 Theory of Operation Main Board Theory of Operation Tone Bit Channel 1 US Audio Channel 2 US Audio Digital Potentiometers for Volume Control x3 Bridge Amplifier Ultrasound Audio Doubler Serial Clock and Data Ultrasound Envelopes Figure 5 18 Audio Module Block Diagram The outputs of the main filters are also input to U32 and U35 The input to U35 is through high pass filters at 63 Hz The high pass components for Channel and Channel 2 are C154 R338 and C159 R357 respectively The output of the main filters are also input to U32 this integrated circuit in conjunction with U35 forms an AGC automatic gain control circuit for both ultrasound channels Each of these AGC circuit has a maximum gain of 200 with a dynamic range of 46 dB Each of the AGC outputs are high pass filtered by C169 R343 at 90 Hz with a gain of one then input to a half wave detector U36 pin 7 with a gain of 1 47 The output of the detector circuits are low pass filtered by U36 pin 1 at 20 Hz at gain of ten
56. that the FHRI value counts between approximately 50 and 210 BPM and that the recorder prints a ramp between the same values Refer to Figure 6 3 Table 6 3 Ultrasound Test Simulator Settings Section Switch Setting Mode US US FMD Signal Level MED Rate MANUAL Revision C 170 Series Monitor 6 13 2000947 004 Functional Checkout Procedure Ultrasound Test Table 6 3 Ultrasound Test Simulator Settings Section Switch Setting General Pattern Memory OFF Main CMR UA Mode TOCO 7 Placethe simulator s US Rate switch in each of the individual rate settings 50 60 120 and 210 BPM Verify the following on the monitor The FHRI value reflects the simulator setting 1 BPM The FHRI heartbeat indicator J flashes at the simulator setting Ultrasound audio is heard coming from the rear panel speaker The recorder prints a continuous line at the respective value 3 BPM on the top grid of the strip chart paper 8 Repeat step 4 through step 7 using the second ultrasound channel 9 Place the simulator s US Mode switch in the OFF position Verify the following on the monitor The FHRI value is blank The recorder stops printing the fetal heart rate trace The recorder prints the message CARDIO INOP on the center margin of the strip chart paper after approximately 20 seconds 6 14 170 Series Monitor Revision C 2000947 004 Func
57. the 170 Series Monitor 1 Connect the AC adapter into the power supply connector labeled CONNECT TO GE MEDICAL SYSTEMS REF 7714AAT ONLY Figure 4 9 Connecting the AC Adapter 2 Connect one end of the detachable line cord to the AC adapter connect the other end into a hospital grade grounded wall outlet 3 Press the monitor s Power button 9 The green indicator next to the button illuminates A self test routine automatically runs Read Monitor Self Test Routines on the next page Figure 4 10 Turning the Monitor On Revision C 170 Series Monitor 4 7 2000947 004 Setup Procedures Monitor Self Test Routines Monitor Self Test Routines NOTE Ensure paper is installed in the recorder in order to verify a successful recorder test Each 170 Series Monitor contains a self test routine which checks the internal circuitry of the monitor the displays and indicators and the strip chart recorder The self test routine is automatically initiated each time you turn on the monitor CAUTION SELF TEST FAILURE If there is any problem with the self test routine turn off the monitor and remove it from operation Notify your Biomedical Engineering Department or Service Representative After completion of a successful self test routine the monitor is ready for use NOTE If the recorder was off at the time the monitor was turned off the test routine will turn the recorder on then turn it off after
58. the monitor The value shows three steady dashes in the FHRI display The recorder prints the message US on the center margin of the strip chart paper after approximately 20 seconds Gently rub each crystal of the ultrasound transducer rhythmically There are nine crystals Eight are arranged around the circumference of the transducer one is in the center Verify the following Good sensitivity is apparent The monitor s FHRI value follows the input rate The recorder follows the input rate The FHRI heartbeat indicator 2 flashes for each input Ultrasound audio is heard coming from the monitor s rear panel speaker 5 Disconnect the ultrasound transducer from the front panel of the monitor Verify the following on the monitor TheFHRI value and heartbeat indicator both blank The recorder stops printing the fetal heart rate trace The recorder prints the message CARDIO INOP on the center margin of the strip chart paper after approximately 20 seconds ABOUT LATCHING ALARMS The fetal heart rate alarms are latching alarms which means that a Clinician must acknowledge the alarm using the monitor s Alarm Silence button in order to clear the alarm Active Threshold Alarm Press the Alarm Silence button to cancel the audio component of an active threshold alarm The visual indications remain present until the FHR value returns to within the defined acceptable range
59. the monitor s front panel FECG input Connect from the leads to line pass fail Revision C 170 Series Monitor 9 19 2000947 004 Maintenance Preventative Maintenance Inspection Patient to Chassis Using AC Voltage for One Minute NOTE The hi pot tester voltage is 2 5 kVAC for these tests IMPORTANT ENCLOSURE Wrap the entire monitor enclosure in aluminum foil for these tests US Attach an US test body to the monitor s front panel US input Connect from the test body foil to the enclosure foil pass fail US2 Attach an US test body to the monitor s front panel US2 input Connect from the test body foil to the enclosure foil pass fail TOCO Attach a tocotransducer test body to the monitor s UA input Connect from the test body foil to the enclosure foil pass fail IUP Attach an IUP test body to the monitor s front panel UA input Connect from the test body foil to the enclosure foil pass fail FECG Attach an FECG test body to the monitor s front panel FECG input Connect from the test body leads to the enclosure foil pass fail 9 20 170 Series Monitor Revision C 2000947 004 Maintenance Preventative Maintenance Inspection Mains to Chassis Using DC Voltage for One Minute NOTE The hi pot tester voltage is 5 656 kVdc for these tests IMPORTANT ENCLOSURE Wrap the entire monitor enclosure in aluminum foil for these tests
60. the tests are complete If the recorder was on at the time the monitor was turned off the tests will be performed and the recorder will remain on Table 4 1 Summary of Self Test Routines Test Description What to Verify Display Indicator Test All displays and indicators illuminate Ensure all indicators and each segment of the displays illuminate throughout the entire self test routine Internal Test The internal circuitry of the monitor is verified Make sure the monitor performs the recorder test If there is a problem with the internal circuitry the recorder test will not be performed Recorder Test The following message prints on the strip chart paper TEST ARE ALL DOTS PRINTED Three continuous lines are drawn across the strip chart recorder paper testing the integrity of the printhead See Figure 4 11 Ensure that the lines are printed in the correct positions on the paper Verify thatthe lines are continuous and no gaps appear on the traces 4 8 170 Series Monitor 2000947 004 Revision C Setup Procedures Monitor Self Test Routines 4305CAO GE MEDICAL SYSTEMS PAGES REMAING HR Scale TESTARE ALLDOTS PRINTED Figure 4 11 Recorder Test Revision C
61. to a standard Nurse Call System Two RS 232C connectors are provided for interfacing to peripheral equipment such as m a maternal non invasive blood pressure monitor m acentral information system that uses Hewlett Packard s Digital Series Interface Protocol Contact your Service Representative for more information CAUTION NON DESTRUCTIVE VOLTAGE The maximum non destructive voltage that may be applied to the rear panel connectors is 0 V Do not attempt to connect cables to these connectors without contacting your Biomedical Engineering Department or Service Representative This is to ensure the connectors comply with leakage current requirements of one of the following applicable standards Underwriters Laboratories UL 2601 1 Canadian Standards Associations CSA 22 2 No 125 or International Electrotechnical Commission EN60601 1 Telemetry Connector This high density 15 pin connector is intended for future interfacing to the receiver of a Corometrics telemetry system Contact your Service Representative for more information IMPORTANT TELEMETRY For proper operation when using a telemetry system disconnect all transducers from the front panel of the 170 Series Monitor Refer to the operator s manual for your telemetry system for more information Revision C 170 Series Monitor 3 15 2000947 004 For your notes 3 16 170 Series Monitor Revision C 2000947 004 oetup Procedures
62. when the FECG cable is attached This causes approximately 4 5 mA to flow in the LED of opto coupler U17 The current transfer function of the coupler is 19 typically which causes 860 HA to flow in the photo transistor of U17 in turn causing R103 to be pulled to 5 38 170 Series Monitor Revision C 2000947 004 Theory of Operation FECG IUP Board Theory of Operation ground on the non floating side of the barrier It is then sensed by the system microprocessor The IUP enable ties resistor R97 to the floating ground when the IUP transducer cable is attached This causes approximately 4 5 mA to flow in the LED of opto coupler U17 The current transfer function of the coupler is 1996 typically which causes 860 uA to flow in the photo transistor of U17 in turn causing R104 to be pulled to ground on the non floating side of the barrier It is then sensed by the system microprocessor The tocotransducer enable ties resistor R100 to the floating ground when the IUP transducer cable is attached This causes approximately 4 5 mA to flow in the LED of opto coupler U17 The current transfer function of the coupler is 19 typically which causes 860 uA to flow in the photo transistor of U17in turn causing R105 to be pulled to ground on the non floating side of the barrier It is then sensed by the system microprocessor For a Model 174 only the ultrasound enable ties resistor R109 to the RL when the ultrasound cable is attached This causes approxi
63. 15301A ASSY PCB DISPLAY BOARD 1 37 15461 GASKET REAR PANEL 1 38 15453 PAD PRINT TOP COVER MODEL175 1 39 15323BA KYBD MEMBRANE US1 1 40 15324 LABEL DISPLAY OVERLAY US 1 41 14943AA CLIP SPEAKER 2 42 2000178 001 PLUG CALL LIGHT 1 43 2000359 001 STANDOFF M F 440 1IN LG ALUM 1 44 2000246 001 PLUG TELEMETRY 1 45 2000186 001 PLUG NICOLAY CONN 1 46 2000240 001 WE Ps PEAN RANEE 1 47 284031 SCR 4 40 BH 1 4 LG SLTD N YLON 2 49 608030 CABLE MOUNT ADHESIVE BACK 2 50 608036 TYRAPS CABLE TIES 2 TEA UE i 52 600028 ASSY LINE CORD IEC 1 55 2000890 001 PACKAGING RIGHT CAP 170 SERIES 1 56 2000891 001 PACKAGING LEFT 170 SERIES 1 57 2000892 001 PACKAGING BOXES 170 SERIES 1 Revision 170 Series Monitor 2000947 004 Parts Lists 2000268 188 Model 171 Final Assembly Table 11 1 Model 171 Final Assembly 200268 188 Continued Part Number Description Qty 58 2000893 001 fores SETTE DU TRA 59 13984AA LBL PACKING LIST 340 60 2000555 001 SHLD SPEAKER 170 61 410066 POLY BAG 23X26X 006 62 410097 TAPE SHIPPING 3IN WIDE 4 63 4281CA LBL SERIAL UL APPV D 155 64 4281DA LABEL HAZZARD TAG120 SERIES 1 11 4 170 Series Monitor 2000947 004 Revision C Parts Lists 2000268 189 Model 172 Final Assembly 2000268 189 Model 172 Final Assembly Table 11 2 Model 172 Final Assembly 2000268 189 Part Number Description Qty 1 2000281 001
64. 172 and Model 174 Monitors contain a dual ultrasound channel board The theory contained in this section references the dual ultrasound board but is applicable to the single ultrasound board as well Overview The ultrasound circuitry is a dual channel pulsed Doppler system with Channel 1 and Channel 2 Each channel generates a 1 151 MHz center frequency pulsed carrier signal This signal carrier causes the crystals in the transducer to emit ultrasonic waves When these sound waves enter the maternal abdomen they create echoes when encountering an interface between tissues of differing acoustic impedance If the interface is moving either toward or away from the ultrasound transducer the frequency of the reflected sound differs from the frequency sent from the transducer Isolation Transformer Model 174 Monitors have an isolation transformer for US Channel 1 signals since the connector is shared with the FECG Channel Ultrasound Transducer When the reflected sound wave is received by the transducer crystals it is converted to an electrical signal After being amplified detected and filtered this signal is split into two paths ultrasound audio and ultrasound envelope The audio signal is amplified for driving the speaker while the ultrasound envelope is processed for heart rate data The center frequency of the transmitted carrier is 1 151 MHz with a pulse repetition frequency of 2 kHz single or dual use When both ultrasound c
65. 232 serial ports to upgrade to a newer software release or to install a purchased option such as fetal movement detection Each Flasher disk contains the software upgrade for one time use only In other words you need an individual Flasher disk for each monitor being upgraded Table 4 6 lists the Flasher kits available for the 170 Series Table 4 6 Flasher Kits Kit Description Catalog Number Fetal Movement Detection Feature Addition 1700AAO Software Upgrade to Version 3 2x 1701AAO English language units which includes the following features m Heartbeat coincidence m Portuguese Chinese languages 1701BAO only Communications interface to 1701BAO non English language units external FS5pO2 monitors m Communications support of 115 Update and 115 Transmit Receive protocols 4 20 170 Series Monitor Revision C 2000947 004 Theory of Operation This section of the manual contains the electronic theory of operation for the 170 Series Monitor When possible references are made to the appropriate schematic contained in Chapter 11 Parts Lists of this manual Throughout this chapter signal names ending with an asterisk are active low This chapter contains the following information Functional Qverview err EGG bees Ae Ds Ree Seas 5 2 Main Board Theory of 5 17 FECG IUP Board Theory of 5
66. 2L PHIL ZPS PLASTITE 2 34 2000221 001 SCR 4 PH 1 4L TYPE F PHIL ZPS 2 35 2001894 001 SPRING FRONT GROUND 173 1 36 15301 ASSY DISPLAY BOARD 1 37 15461AA GASKET REAR PANEL 1 38 2004993 002 PAD PRINT TOP COVER MODEL 173 1 39 15323 KYBD MEMBRANE 1052 1 40 15324CA nn DISPLAY OVERLAY FECG MODEL 1 41 14943AA CLIP SPEAKER ACCESS HOME MONITOR 2 42 2000178 001 PLUG CALL LIGHT 1 43 2000359 001 STANDOFF M F 440 1IN LG ALUM 1 44 2000246 001 PLUG TELEMETRY 1 45 15287 PCB ASSY FECG UA BOARD PURCH 1 46 2003930 001 LABEL REAR PANEL 170 SERIES 1 47 284031 SCR 4 40 BH 1 4 LG SLTD N YLON 2 49 608030 CABLE MOUNT ADHESIVE BACK 2 50 608036 TYRAPS CABLE TIES 2 51 7714 12V 30W EXTERNAL 1 55 2000890 001 PACKAGING RIGHT CAP 170 SERIES 1 56 2000891 001 PACKAGING LEFT 170 SERIES 1 57 2000892 001 PACKAGING BOXES 170 SERIES 1 58 2000893 001 PACKAGING SLOTTED TRAY 170 SERIES 1 59 410010 PACKING LIST ENVELOPES 1 60 2000555 001 SHLD SPEAKER 170 1 61 410066 23 26 006 1 Revision 170 Series Monitor 2000947 004 Parts Lists 2001972 037 Model 173 Final Assembly Table 11 3 Model 173 Final Assembly 2001972 037 Continued Find Num Item Number Item Description Qty 62 410097 TAPE SHIPPING 3IN WIDE 4 63 4281DA LABEL C UL HAZZARD TAG120 SERIES 1 64 4281EA ire NUMBER UL amp MODEL 1 65 408230 008 LABEL CE MARK 1 66 160019 SEALANT MED BLUE 0 67
67. 3 These phases are translated to 5 V and buffered by U6 to drive the FETs which in turn drive the unipolar motor Clamp diodes are used to limit the inductive spike generated when the switches open The paper status logic consists of paper out and paper misload optical sensor interface circuitry as well as a door switch interface The paper status logic consists of dual digital potentiometer U9 resistors R216 and R217 for LED drive to the paper out sensor and R219 and R220 for LED drive to the paper misload sensor The digital potentiometer connects to the collector of the sensor transistor and becomes the variable pull up These signals MISCOIL and OUTCOIL are further processed by the analog to digital converter to determine the correct threshold for the two sensors Clamp device U8 is used for ESD protection The door switch input is a switch closure to ground and is read by the processor through buffer U15 The printhead interface consists of PAL U4 which contains the printhead control latch head protection circuitry and printhead shift register The printhead control latch contains the four strobes for the printhead sections the printhead load line and the printhead power supply enable line The printhead protection timer consists of a four bit counter which uses a 2 kHz clock Usmode U4 pin 35 to count off six clocks The counter is enabled when any one of the four processor latched strobes is active After six counts of any active strobe
68. 3 ms the counter disables all four output strobes and turns off the 24 V head supply The circuit resets when the processor latched strobes return to an inactive state The power fail control line input U4 pin 76 is also a form of protection which turns off all strobes and the power supply when the 12 V drops to about 10 V The printhead shift register consists of an 8 bit shift register which clocks out D7 first and clock counters which allow eight clocks to be output for every processor write to the register The clock counter also provides a done status bit BUSY which goes high after all eight bits are shifted out This status bit 1s read through the UART spare port line U21 pin 28 Figure 5 16 provides a block diagram of the recorder interface 5 24 170 Series Monitor Revision C 2000947 004 Theory of Operation Main Board Theory of Operation to Data Bus to Motor Motor Control Latch Paper Status Lines Status Read Buffer from PAL Device Printhead Control Latch to Printhead strobes load line clock Printhead Protection Circuitry Printhead Data Shift Register Figure 5 16 Recorder Interface Block Diagram Revision C 170 Series Monitor 5 25 2000947 004 Theory of Operation Main Board Theory of Operation Ultrasound Module Model 171 and Model 173 Monitors contain a single ultrasound channel board Model
69. 3434AA LBL SHIP CRTN CE MARK VAR 1 32 160103 ADHESIVE 454 0 33 162004 OIL SILICONE 3ML TUBE 0 34 OBSER 003 ADDENDUM WATERTIGHT XDCR 1 35 14957AA WARNING LABEL KIT U S TOCO WATERTIGHT 1 36 14897AA INSTRUCTION SHEET WATERTIGHT 1 37 474045 NETWORK RES SIP 47 OHM 9 RES 1 Revision C 170 Series Monitor 2000947 004 11 15 Parts Lists 5700KAX Loop Style Nautilus Ultrasound Transducer Assembly Parts List 5 ft cord 5700KAX Loop Style Nautilus Ultrasound Transducer Assembly Parts List 5 ft cord Table 11 7 5700LAX Loop Style Nautilus Ultrasound Transducer Assembly Parts List 5 ft cord Find Num Item Number Item Description Qty 1 14895A U S CBL ASSY 5 OB WATERTIGHT 1 5 15082AA MKG CASE TOP U S WATERTIGHT 1 6 14791 CASE BOTTOM ASSY U S WATERTIGHT 1 7 14594AA FLAT SEAL TOCO U S WATERTIGHT XDCR 1 8 14640 CABLE MOUNTING NUT US WATERTIGHT 1 9 284106 SCR 4 40 PH 5 16L W SEAL PHIL SS LL 5 10 2008660 001 SCR CAP TOCO U S 4 11 15254AA SCREW CAP FLAT MARING WATERTIGHT SCUCERS 1 13 281260 SCR SET 2 56 1 81 OVAL PT SS 1 16 7514DA ABDOMINAL STRAP BLUE 1 18 14855 WARNING TAG CABLES WATERTIGHT 1 19 13658FA LBL CE CAUTION IP68 WATERTIGHT XDCR 1 20 440011 LABEL 2 25X 75 SELF LAM WHITE 1 22 4991AA ACC PACKER 1 23 410069 PACK MATERIAL ST 1 24 410113 BAG AIRCAP 8 X 11 1 2 1 28 15265DA SHIPPING LBL 5700KAX WATERTIGHT XDUCERS 1 31 13434AA LBL SHIP CRTN CE MARK VAR 1 32 160103 ADHE
70. 36 Revision C 170 Series Monitor 5 1 2000947 004 Theory of Operation Functional Overview Functional Overview For all 170 Series Monitors the Main Board controls the majority of the 170 Series functionality including seven segment displays user interface buttons peripheral device communications 99999 processing antepartum US TOCO front ends and connector s uterine activity front end and connector For Models 173 and 174 a separate FECG IUP Board controls intrapartum front ends isolation for analog signals Figure 5 1 provides an overview of the system architecture Table 5 1 through Table 5 17 provide pinouts for each of the external connectors and the internal main board harness connectors Figure 5 2 through Figure 5 9 provide illustrations of the front and rear panel connectors Speaker Cable Display Board Membrane Membrane Switch Panel Cable Printhead Cable Sensor MAIN BOARD Figure 5 1 Overview of System Architecture RECORDER MODULE Printhead and Sensors 5 2 170 Series Monitor 2000947 004 Revision C Theory of Operation Functional Overview Table 5 1 Main Power Connector Pin Number Description 1 12 Vdc Input 2 Negative Input 3 Shield Figure 5 2 Main Power Connector Revision C 170 Series Monitor 2000947 004 5 3 Theory
71. 400 ext FSpO NOTE The interface cables can be used with both 120 2120is and 170 Series Monitors Although the 120 2120is uses 6 pin RJ 11 connectors and the 170 uses 8 pin RJ 45 connectors the latter is center keyed to account for this The 170 uses RJ 45 connectors to provide for future interface features Revision C 170 Series Monitor 8 9 2000947 004 Peripheral Devices RS 232 Connectors Model 115 Compatible Communications Protocols Two options provide backward compatibility so that the 170 Series Monitor can operate in a Model 115 compatible communication mode m 115 Update Mode The 115 Update mode outputs all available information and ignores requests from a host computer system m 115 Transmit Receive The 115 Transmit Receive mode only outputs data requested from a host computer system When the Model 115 Fetal Monitor was released many customers developed their own interfaces for communicating with the monitor Setting the 170 Series Monitor to one of these communication modes allows these users to use their existing interfaces with the 170 Series Monitor as well The 170 Series Monitor emulates the Corometrics Model 830 Converter s implementation of the 115 Communication Protocols This protocol is named after the Corometrics Model 115 Fetal Monitor in which it originated NOTE The baud rate must match the external computer however the recommended baud rate is 9600 Lower baud rate
72. 7 004 Functional Checkout Procedure Uterine Activity Test 11 Disconnect the Model 325 Simulator s uterine activity sub cable from the UA input receptacle on the front panel of the monitor Verify the following on the monitor The UA value is blank The recorder stops printing the uterine activity trace The recorder prints the message UA INOP on the center margin of the strip chart paper after approximately 20 seconds 145 PSS ive 19841 FHR 240 bpm 210 120 14 58 05 AUG 97 CARDIO INOP 3 CM MIN X 50 6 4 I X 2 2 O kPa UA 0 Figure 6 5 Uterine Activity Ramp 6 20 170 Series Monitor Revision C 2000947 004 Functional Checkout Procedure Tocotransducer Test Tocotransducer Test 1 Inspect a Nautilus tocotransducer as follows Check for any cracks or contaminants on the tocotransducer especially on the diaphragm located on the bottom of the tocotransducer Visibly assess the condition of the cable strain relief and connector pins 2 Connect the tocotransducer to the UA input receptacle on the front panel of the 170 Series Monitor 3 Access service setup mode and note the default TOCO reference setting 4 Exitthe service setup mode 5 Press the monitor
73. 70 Series Monitor 2000947 004 Serviceable Assemblies Nautilus Ultrasound Transducer Top Cover Replacement Nautilus Ultrasound Transducer Top Cover Replacement In order to replace the top cover of a Nautilus Ultrasound Transducer in the field you will require one of two kits Refer to Table 7 11 and ensure you have the correct kit Unpack the kit and ensure it contains the items listed in Table 7 12 If something is missing contact your GE Service Representative immediately The text of the instruction sheet is repeated here for informational purposes Table 7 11 Kit Summary Nautilus Ultrasound Transducer Type and Cat No REF Cable Kit Cat No REF Loop Style Ultrasound Transducer 5700 KAX LAX MAX 2011679 001 Button Style Ultrasound Transducer 5700GAX HAX JAX 2011680 001 Table 7 12 Packing List Item Qty Transducer Case Top Flat Seal O Ring Sealing Screw 4 40 x 5 16 in Screw Cap Curved gt Screw Cap Flat Belt Knob Screw Cap Extraction Tool 8 The belt knob is included in button style kits 2011680 001 only Equipment Required You will need the following equipment Phillips Head Torque Driver Loctite Adhesive 7454 recommended Anti Static Wristband Static Free Work Surface 7 30 170 Series Monitor 2000947 004 Revision C Serviceable Assemblies Nautilus Ultrasound Transducer Top Cover Repla
74. 8 foot length only Table 7 6 Kit Summary Nautilus Transducer Type and Cat No REF Cable Kit Cat No REF Loop Style Ultrasound Transducer 5700 KAX LAX MAX 2003659 001 Button Style Ultrasound Transducer 5700 GAX HAX JAX 2003660 001 Loop Style Tocotransducer 2264 DAX EAX FAX KAX LAX MAX 2003661 001 Button Style Tocotransducer 2264 AAX BAX CAX GAX HAX JAX 2003662 001 Table 7 7 Packing List Item Qty Transducer Case Top Cable Assembly 8 ft Flat Seal O Ring Sealing Screw 4 40 x 5 16 in Screw Cap Curved Screw Cap Flat Belt Knob a kits 2003660 001 and 2003662 001 only The belt knob is included in button style Revision C 170 Series Monitor 2000947 004 7 15 Serviceable Assemblies Nautilus Transducer Cable Replacement Equipment Required You will need the following equipment Reference Figures Phillips Head Torque Driver Screw Cap Extraction Tool cat no 2004084 001 Soldering Iron and Solder ultrasound transducers only Loctite Adhesive 454 recommended Anti Static Wristband Static Free Work Surface Refer to Figure 7 5 and Figure 7 6 while using the cable replacement kit Tocotransducer 2264 AAX BAX CAX DAX EAX FAX Green Wire Shield Clear Wire Center Conductor Green Wire Ground Figure 7 6 Nautilus Transducers Cover Removed
75. A O mmHg d kPa UA Figure 6 1 FECG Ramp 170 Series Monitor Revision C 2000947 004 Functional Checkout Procedure FECG Test FHR 246 bpm 210 180 150 90 60 30 45 04 05 AUG 97 FECG CM MIN 100 12 75 io 8 um 0 4A 7 5 6 4 25 2 UA mmHg kPa Figure 6 2 FECG Artifact Elimination Revision C 170 Series Monitor 2000947 004 Functional Checkout Procedure Legplate Inspection Legplate Inspection Inspect the legplate as follows 1 2 Check for a proper seal around the ground plate Ensure that no contaminants are present on either the ground plate or the push posts Visibly assess the condition of the cable strain relief and connector pins 6 12 170 Series Monitor Revision C 2000947 004 Functional Checkout Procedure Ultrasound Test Ultrasound Test This portion of the functional checkout procedure ensures the integrity of the ultrasound circuitry and the heart rate channel of the recorder l 2 Connect the simulator s US sub cable to the US receptacle on the monitor Set the switches on the Model 325 Input Simulator according
76. AMD AM29LV800B 8 Mb flash memory parts U23 U26 are used to provide 4 MB of data storage and non volatile program memory The flash parts are arranged in pairs to allow 32 bit data access Separate write enable lines allow access to individual 16 bit words if required Chip selects for each flash pair are controlled by the programmable array logic device PAL U4 and are memory mapped to make all 4 MB appear as a single area of memory The system RAM consists of two Hitachi HM5216165 16 Mb SDRAMs U27 U28 The processor provides all of the DRAM support signals RAS CAS etc A 32 bit data bus is used and 8 and 16 bit access are supported An AT29LV010A 1 Mb flash memory part U29 is used as a boot ROM The processor begins execution from this area of memory Area 0 CS0 An 8 bit data bus is used A battery RAM with real time clock MT48T18 U31 provides the clock and 8k x 8 data storage function for parameters error logs etc Transceiver U30 buffers and voltage translates data from the 5 V battery RAM The PAL U4 provides the address decoding for the system flash memory battery RAM display input buffers and recorder control latches The PAL also contains latches which allow control of the printhead serial peripheral interface SPI chip selects telemetry and fetal movement signal controls PAL U4 also provides the parallel to serial conversion for the printhead data The PFAIL and software enable bits are used
77. CTS general input output Both external channels support the RTS CTS lines Transceivers U19 and U20 convert the UART 3 V digital communications lines to RS 232 levels 7 V typically for transmission and 7 V RS 232 levels to 3 V levels for reception RJ 45 connectors J7 and J8 provide center connection compatibility to the 6 pin RJ 11 connectors found on the 120 Series Maternal Fetal Monitors The 170 Series uses the larger 8 pin connectors to provide fused power for future interfacing Each channel has shunt 1000 pF shunt capacitors for emissions 100 Q series resistors and clamp devices D6 and D7 for ESD protection Figure 5 15 provides a block diagram of the communications module to Data Bus 4 TXD RTS RS 232 Line RXD CTS gt Transceivers 4 toRearPanel Channel 1 TXD RTS RS 232 Line RXD CTS gt Transceivers lt QUAD UART Channel 2 Miscellaneous Inputs Miscellaneous Outputs Figure 5 15 Communications Module Block Diagram Revision C 170 Series Monitor 5 23 2000947 004 Theory of Operation Main Board Theory of Operation Recorder Interface Module The recorder interface consists of motor control paper status logic and printhead control logic The motor control consists of latch U3 buffer U6 and FET transistors Q5 Q8 The four phase signals are generated by the processor using U
78. Co gt Co 4 4 W 26 AWG Blue Jumper Wire O Shield Shrink Tubing 26 AWG Green Wire Figure 7 3 FECG Cable Preparation Revision C 170 Series Monitor 2000947 004 Serviceable Assemblies Transducer Plug Replacement Kits Table 7 5 FECG Cable Wiring Pin Number Pin Length Description Wire Color 1 short 2 short ECG Enable Blue and 26 AWG Blue Jumper 3 LONG Ground 26 AWG Blue Jumper 4 short 9 short short LA red terminal White Black 7 short RA green terminal White 8 short Shield 26 AWG Green 9 short 10 short 11 short 12 short RL plate White Red 7 12 170 Series Monitor 2000947 004 Revision C Serviceable Assemblies Transducer Plug Replacement Kits Plug Assembly 6 Pin Housing 10 Plastic Ring Refer to Figure 7 4 while replacing a transducer plug Note that the strain relief clamp 3 orientation is different between tocotransducers and all other transducers ultrasound FECG In addition the Oetiker clamp 11 is used for Nautilus Tocotransducers only 2 Gripper 7 Retaining Ring 8 Half Shell with Tongue 11 Oetiker Clamp Nautilus TOCO only 4 Ground Pin 5 Circuit Contact Pins 9 Half Shell without Tongue TOCO US FECG clamp orientation Figure 7 4 Transducer Plug Construction Remove the old plug
79. DICAL SYSTEMS REF 7714AAT ONLY B 4 A Figure 3 7 Rear Panel Connectors Power Supply Connector This is the receptacle for the AC adapter P N 7714AAT only A line cord connects from the other end of the adapter to an AC wall outlet The connector 15 labeled CONNECT TO GE MEDICAL SYSTEMS REF 7714AAT ONLY The power supply is a universal AC to DC converter which can accept an AC input in the range 100 230 VAC The converter supplies a regulated 12 Vdc to the monitor Remote Mark Connector This connector is provided for attaching an optional Corometrics Model 146 Fetal Acoustic Stimulator FAST The annotation T prints on the strip chart each time the Model 146 is used t Remote Mark Connector This connector is provided for attaching an optional Corometrics Remote Event Marker This accessory annotates the strip chart recorder paper with a marker which can be configured as one of the following T This annotation is commonly used to record an event M This annotation is commonly used as an indication that the mother has perceived fetal movement The monitor is factory set to use the 1 annotation Refer to the Chapter 4 Setup Procedures for information about selecting the annotation Revision C 3 14 170 Series Monitor 2000947 004 Controls Indicators and Connectors Rear Panel Connectors fA Nurse Call Interface RS 232C Connectors This connector is intended for future interfacing
80. Front Panel UA Connector Figure 7 7 CMR Test Jack Pin 1 Pin 2 Pin 4 Pin 6 Table 7 8 CMR Test Jack Components Part Description Catalog Number Pressure Connector 6158J 475 1 8 W 1 Resistor 472127 7 20 170 Series Monitor Revision C Serviceable Assemblies Tocotransducer Calibration Nautilus Tocotransducers Calibrating a Nautilus Tocotransducer requires a Calibration Kit Refer to Table 7 9 to order the correct kit Unpack the kit and ensure it contains the items listed in Table 7 10 If something is missing contact your GE Service Representative immediately The text of the instruction sheet is repeated here for informational purposes Table 7 9 Kit Summary Nautilus Transducer Type and Cat No REF Cable Kit Cat No REF Loop Style Tocotransducer 2264 DAX EAX FAX KAX LAX MAX 2003663 001 Button Style Tocotransducer 2264 AAX BAX CAX GAX HAX JAX Table 7 10 Packing List Item Qty Transducer Case Top Flat Seal O Ring Sealing Screw 4 40 x 5 16 in Screw Cap Curved Screw Cap Flat Belt Knob Instruction Sheet 1 1 The belt knob is included in button style kit 2003664 001 only 2003664 001 Revision C 170 Series Monitor 2000947 004 Serviceable Assemblies Tocotransducer Calibration Equipment Required IMPORTANT WEIGHT TYPE The specified weight cat
81. G IUP Board 4 SHIELDF Output Isolated Shield 5 PRESS Output UA Channel Negative Input PRESS Output UA Channel Positive Input 7 ISO4V Input Isolated 4 V Reference 8 ECGEN Output Enable for FECG Cable 9 4VISOGND Input Isolated 4 V Reference Ground 10 PEN Output Isolated IUP Enable 11 NC No Connection 12 ENTOCO Output Isolated TOCO Enable Active low 5 16 170 Series Monitor Revision C 2000947 004 Theory of Operation Main Board Theory of Operation Main Board Theory of Operation Figure 5 10 provides a block diagram of the Main Board in the 170 Series Monitor The board number varies according to the particular model in the series as summarized in Table 5 18 Revision C Table 5 18 Main Board Variations 170 Series Model Main Board FRU Number Ultrasound Channels FECG IUP Board Mount Model 171 2000244 Single No Model 172 15269 Dual No Model 173 2000324 Single Yes Model 174 2000952 Dual Yes 5 17 170 Series Monitor 2000947 004 Theory of Operation Main Board Theory of Operation Audio Module Audio amplifier Ultrasound volume controls ECG alarm tone volume control Status Switch Input Module Communications Module Front panel switch input Quad async UART buffers RS 232 transceivers Rear panel recorder and front end status buffers Display Interface Recorder Interface Data buffers ESD protect Ultrasound Module Ultrasound transmitter Control lo
82. GAIN potentiometer counterclockwise to increase the gain If the change is more than 0 13 V then adjust the GAIN potentiometer clockwise to decrease the gain 12 Repeat step 9 through step 11 until the change in voltage between the WEIGHT ON and WEIGHT OFF conditions falls into specification 7 26 170 Series Monitor Revision C 2000947 004 Serviceable Assemblies Tocotransducer Calibration 13 Torque seal all potentiometers Affix new sealing tape and re install the nameplate CAUTION OFFSET VOLTAGES Due to offset voltages induced by the circuitry in the Trimline Tocotransducer it is necessary to adjust the change in voltage between the WEIGHT ON condition and WEIGHT OFF condition instead of simply adjusting the output voltage for each condition Adjusting the GAIN potentiometer while monitoring the voltage at TP2 may show little or no voltage change as the potentiometer is being adjusted However when the weight is again placed on the button the output voltage for this condition may have changed significantly In summary it 1s necessary to adjust the GAIN potentiometer and then recheck the voltages during both the WEIGHT ON condition and the WEIGHT OFF condition to determine the effectiveness of the adjustment As stated in step 12 the procedure is repeated until the voltages fall into specification for both conditions 14 Refer to Testing a Repaired Transducer TOCO or US on page 7 34 Revision C
83. High Alarm Limit High Alarm Limit EXAMPLE Press 1 to enter the user setup mode Use fz or v to change the number Use f to select feature code 2 FHR High Alarm Limit See Table 4 2 Press to switch between displays Press to switch displays The heartbeat indicator V lights Use i or y to change the number Use to change the value to 185 BPM See Table 4 2 Y Press amp to switch between displays Repeat steps to change other settings Press to switch displays again The sign lights Repeat steps 2to5 NOTE For Models 172 173 and 174 use the leftmost set of volume controls Figure 4 12 Setup Mode Summary Model 172 shown Revision C 170 Series Monitor 2000947 004 Setup Procedures Customizing the Monitor You can enter the user setup mode during an active monitoring session The fetal heart rate and uterine activity trends print without interruption and the FHR tones remain audible however you will be unable to see the heart rate and uterine activity values on the display while in the user setup mode You can only enter the service setup mode from a power off state NOTE If an alarm occurs while in user setup mode the heart rate display will not flash however the alarm indicator A flashes and the audio alarm sounds As soon as you exit the setup mode the affected display flashes to indicate the alarm condition 1 Enter the appropriate
84. If you are installing a tabbed cover onto a bottom slotted enclosure ensure that the tabs align with the slots 17 Secure the top cover with the four bottom panel screws 18 Discard previous top cover assembly 7 38 170 Series Monitor Revision C 2000947 004 Serviceable Assemblies Replacing the Membrane Switch Panel alignment tabs Figure 7 12 Top Cover Alignment Tabs Figure 7 13 Bottom Enclosure Alignment Slots Revision C 170 Series Monitor 7 39 2000947 004 Serviceable Assemblies Replacing a Front Panel Connector Replacing a Front Panel Connector Equipment Required Screwdriver Connector see Table 7 14 De soldering tool Soldering iron Solder Table 7 14 Front Panel Connectors Connector Color Part Number US US2 Blue 212174 UA TOCO IUP White 212173 FECG Dark Grey 212175 COMBI US FECG Blue and Grey 2003692 001 Procedure 1 Disconnect the AC adapter from the monitor to completely remove power 2 Follow the instructions for Removing the Monitor Top Cover on page 7 19 It is not necessary to disconnect the cables You only need access to the front panel connectors 3 Follow the instructions for Replacing the Main Board on page 7 35 There is no need to remove the FECG IUP Board 4 Remove the six screws from the front end connector shield 5 De solder the damaged connector and discard 6 Solder a new connector in place 7 R
85. LDF Output Isolated Shield 5 PRESS Output UA Channel Negative Input PRESS Output UA Channel Positive Input 7 ISO4V Input Isolated 4 V Reference 8 ECGEN Output Enable for FECG Cable 9 4VISOGND Input Isolated 4 V Reference Ground 10 PEN Output Isolated IUP Enable 11 USEN 174 only Output posue es 12 ENTOCO Output Isolated TOCO Enable Active low 5 42 170 Series Monitor 2000947 004 Revision C Functional Checkout Procedure Like all electronic monitoring devices internal and external components are subject to fatigue wear and the potential for failure over time and under varying conditions of use Additionally events such as dropping the monitor spilling liquids on the monitor or crimping the lead wires or patient cables can cause damage which may affect the overall system performance This chapter contains the following Equipment Required ore lere Rr Rey nes 6 2 Veo si eed ec o Mcd a S a 6 3 Monitor Self Test ek rm bale rrr e e 6 4 Front Panel Pushbutton Test dais RP DS 6 5 Connecting the Simulator i 6 6 PECG Test Lure vate iaer hee des een bea PEERS 6 7 ILepplate Inspectton cepe pes ere 6 12 Test eiie cede dzte pt hec 6 13 Fetal Movement Detection 6 16 Ultrasound Transducer Test rres 0c cece eee eee eee 6 18 Uterine Activity Test s sssr ree
86. LF LAM WHITE 1 21 4991 1 22 410069 PACK MATERIAL ST 1 23 410112 BAG AIRCAP 6 X 8 1 2 1 24 15264AA SHIPPING LBL 2264AAX WATERTIGHT XDUCERS 1 30 13434 LBL SHIP CRTN CE MARK VAR 1 31 160034 LOCTITE SUPERBONDE 0 32 162004 OIL SILICONE 3ML TUBE 0 11 14 170 Series Monitor Revision C 2000947 004 Parts Lists 5700GAX Button Style Nautilus Ultrasound Transducer Assembly Parts List 5 cord 5700GAX Button Style Nautilus Ultrasound Transducer Assembly Parts List 5 ft cord Table 11 6 5700GAX Button Style Nautilus Ultrasound Transducer Assembly Parts List 5 ft cord Find Num Item Number Item Description Qty 1 14895A U S CBL ASSY 5 OB WATERTIGHT 1 4 15081AA MARKING CASE BUTTON TOP U S WATERTIGHT 1 6 14791A CASE BOTTOM ASSY U S WATERTIGHT 1 7 14594AA FLAT SEAL TOCO U S WATERTIGHT XDCR 1 8 14640AA CABLE MOUNTING NUT TOCO US WATERTIGHT 1 9 284106 SCR 4 40 PH 5 16L W SEAL PHIL SS LL 5 10 2008660 001 SCR CAP U S 4 11 15254AA SCREW CAP FLAT MARING WATERTIGHT SCUCERS 1 12 7529 KNOB TOP NAUTILUS WATERTIGHT 1 13 281260 SCR SET 2 56 1 8L OVAL PT SS 1 17 8974AA ABD STRAP BUTTON STYLE BE LT 1 18 14855AA WARNING TAG CABLES WATERTIGHT 1 19 13658FA LBL CE CAUTION IP68 WATERTIGHT XDCR 1 20 440011 LABEL 2 25X 75 SELF LAM WHITE 1 22 4991AA ACC PACKER 1 23 410069 PACK MATERIAL ST 1 24 410113 BAG AIRCAP 8 X 11 1 2 1 25 15265AA SHIPPING LBL 5700GAX WATERTIGHT XDUCERS 1 31 1
87. M SHIELDED 170 SERIES 1 2 15451 COVER SPEAKER 1 3 140173 FOOT RUBBER 50D 26H 4 4 15222AA BRG DRAWER 2 5 15212AA PIN BEARING 170 2 6 15200A ASSY ROLLER 1 T 250096 BEARING FLANGED 187 BORE 2 8 11717AA ROLLER GEAR 120REC 1 9 15207 ASSY DRAWER WELDED 1 10 15224AA SPACER DRAWER 1 11 15223AA PLASTIC 9 CM PARTITION 1 12 15231A ASSY PCB SENSOR BOARD 1 13 2000147 001 SENSOR INSULATOR 170 SERIES 1 14 250099 SPRING COMPRESSION 24 OD 38L 1 15 2000222 001 SPRING CPRSN 3 OD 022WIRE SS 2 16 15136A MOTOR STEPPER ASSY 1 17 15202 MOUNT MOTOR 1 18 15201 PLATE PC MOUNTING 1 19 2000133 001 PRINTHEAD 8 DOTS MM 216MM WIDE 1 20 15203AA PLATE HEAD MOUNTING 1 21 2000223 001 SPRING CPRSN 56L 240 OD 024 WIRE 2 22 15204AA BRACKET HEADSTOP 1 23 2002433 001 STANDOFF 1 4 HEX SWAGE 4 40 2 24 281501 NUT HEX 4 40 3 32 X 1 4 2 25 2000234 001 mec RIBBON RECORDER 170 1 26 2000235 001 CABLE ASSY SPEAKER WIRE 170 SERIES 1 27 2000146 001 CLIP GROUND 2 28 2000324 007 ASSY MAIN FECG PRS COMP V3 20 1 173 170 Series Monitor 2000947 004 Revision C Parts Lists 2001972 037 Model 173 Final Assembly Table 11 3 Model 173 Final Assembly 2001972 037 Continued Find Num Item Number Item Description Qty 29 284105 SCREW 4 PH 1 4L THD FORM 7 30 284072 SCR 4 40 PH 5 16L PHL LL STRIP 33 31 284285 Et PASE 3 16 PHIL 2PS 4 32 289516 SCR M3X5 PH PHIL ZP W NYLOK PATCH 4 33 2000220 001 SCR PH 2 1
88. Main Board Data Bit 6 2 D5 Output Main Board Data Bit 5 3 D7 Output Main Board Data Bit 7 4 DISPLCS Output Not Used 5 A0 Output Telemetry ECG 173 174 D4 Output Main Board Data Bit 4 7 D1 Output Main Board Data Bit 1 8 DO Output Main Board Data Bit 0 9 D2 Output Main Board Data Bit 2 10 D3 Output Main Board Data Bit 3 11 SEGA Output Segment A for Pressure 1 LED 12 SEGB Output Segment B for Pressure 1 LED 13 SEGC Output Segment C for Pressure 1 LED 14 SEGD Output Segment D for Pressure 1 LED 15 5V Output 5 Volts for LEDs 16 GND Output Ground for LEDs Revision C 170 Series Monitor 5 13 2000947 004 Theory of Operation Functional Overview Table 5 15 Membrane Switch Panel Interface J19 Signal Type Pin Number Signal Name Relative To Main Signal Description Board 1 UAREF Input UA Ref Switch Input 2 PWRANODE Output Power Indicator LED Anode 3 REC Input Recorder On Switch Input 4 NC Output No Connection 5 MARK Input Mark Switch Input 7 PADV Input Paper Advance Switch Input 6 GND Output Ground 8 RECANODE Output Recorder on LED Anode 9 VOLDN Input Volume Down Channel 1 Switch Input 10 CANCEL Input Alarm Cancel Switch Input 11 VOLUP Input Volume Up Channel 1 Switch Input 12 VOLDN2 Input Volume Down Channel 2 Switch Input 13 PWRSWITCH Input Power Switch Input 14 VOLUP2 Input Volume Up Channel 2 Switch Input 15 GND Output Ground for LEDS and Switch
89. NT GROUND 1 36 15301 ASSY PCB DISPLAY BOARD 1 37 15461 GASKET REAR PANEL 1 38 15453AA PAD PRINT TOP COVER MODEL 170 1 39 15323 KYBD MEMBRANE US2 1 40 15324AA LABEL DISPLAY OVERLAY US2 1 41 14943AA CLIP SPEAKER 2 42 2000178 001 PLUG CALL LIGHT 1 43 2000359 001 STANDOFF M F 440 1IN LG ALUM 1 44 2000246 001 PLUG TELEMETRY 1 esc ue ret a 2 1 47 284031 SCR 4 40 BH 1 4 LG SLTD N YLON 2 49 608030 CABLE MOUNT ADHESIVE BACK 2 50 608036 TYRAPS CABLE TIES 2 51 TAN ETERNAL SUPPLY 52 600028 ASSY LINE CORD IEC 1 55 2000890 001 PACKAGING RIGHT CAP 170 SERIES 1 56 2000891 001 PACKAGING LEFT CAP 170 SERIES 1 57 2000892 001 PACKAGING BOXES 170 SERIES 1 58 2000893 001 UR SLOTTED TRAY 1 170 Series Monitor 2000947 004 Revision C Parts Lists 2000268 189 Model 172 Final Assembly Table 11 2 Model 172 Final Assembly 2000268 189 Continued Item n Number Part Number Description Qty 59 13984AA LBL PACKING LIST 340 0001 60 2000555 001 SHLD SPEAKER 170 61 410066 POLY BAG 23X26X 006 1 62 410097 TAPE SHIPPING 3IN WIDE 4 63 4281CA LBL SERIAL UL APPV D 155 1 64 4281DA LABEL C UL HAZZARD TAG120 SERIES 1 Revision C 170 Series Monitor 2000947 004 Parts Lists 2001972 037 Model 173 Final Assembly 2001972 037 Model 173 Final Assembly Table 11 3 Model 173 Final Assembly 2001972 037 Find Num Item Number Item Description Qty 1 2007385 001 ENCL BOTTO
90. OR The combi connector can be used for monitoring ultrasound or FECG depending on what you plug in US transducer or FECG cable legplate When used in conjunction with the secondary ultrasound connector you have the option of monitoring twins using dual US or FECG US 9 amp Secondary Ultrasound Connector 1 f The secondary ultrasound connector is a blue round receptacle mechanically keyed to accept only a Corometrics ultrasound transducer plug The fetal heart rate derived from this connector shows in the secondary fetal heart rate display Uterine Activity Connector The uterine activity connector is a white round receptacle mechanically keyed to accept a Corometrics tocotransducer a Corometrics strain gauge transducer plug or any intrauterine pressure catheter with compatible cable plug The uterine activity value obtained from this transducer shows in the uterine activity display l If the Model 174 is interfaced to a clinical information system CIS be aware that the CIS may be designed to alarm when there is no fetal heart rate signal Therefore it is recommended that you unplug the ultrasound and or FECG transducers from the monitor when not in use to eliminate false alarms Revision C 170 Series Monitor 3 11 2000947 004 Controls Indicators and Connectors Strip Chart Recorder Strip Chart Recorder Heart Rate Grid
91. P US TOCO or US2 TOCO US IUP or USZ IUP US FMD TOCO US FMD IUP FECG US TOCO FECG US IUP NOTE US US2 cannot be tested simultaneously unless two Model 325 Simulators or two ultrasound transducers are used Do not attempt to test dual ultrasound using one Model 325 Simulator and one ultrasound transducer or a conflict between enable lines will occur NOTE Although dual heart rate can be verified using the pattern memory an additional procedure is given in this functional checkout procedure To check any of the mode combinations listed above 1 Connect the appropriate simulator sub cables to the corresponding receptacles on the monitor Enable the modes on the simulator Set the simulator s Pattern Memory switch to the ON position If not already on press the monitor s Record pushbutton Verify the following on the monitor Each heart rate display FHR1 and FHR2 responds accordingly for value and heartbeat indicator The UA display responds accordingly for the value The recorder responds appropriately in both trending and message information NOTE Refer to the Model 325 Simulator Product Manual for illustrations of the patterns to be expected on the monitor Revision C 170 Series Monitor 6 23 2000947 004 Functional Checkout Procedure Dual Heart Rate Test Non Pattern Dual Heart Rate Test Non Pattern FECG US Modes Connect the Model 325 Simulator s ECG sub cable to
92. SIVE 454 0 33 162004 OIL SILICONE 3ML TUBE 0 34 OBSER 003 ADDENDUM WATERTIGHT XDCR 1 35 14957AA WARNING LABEL KIT U S TOCO WATERTIGHT 1 36 14897 INSTRUCTION SHEET WATERTIGHT 1 37 474045 NETWORK RES SIP 47 OHM 9 RES 1 11 16 170 Series Monitor 2000947 004 Revision C Parts Lists 2264DAX Loop Style Nautilus Tocotransducer Assembly Parts List 5 ft cord 2264DAX Loop Style Nautilus Tocotransducer Assembly Parts List 5 ft cord Table 11 8 2264 Loop Style Nautilus Tocotransducer Assembly Parts List 5 ft cord s Item Number Item Description Qty um 1 14894A CBL ASSY OB 5 LG WATERTIGHT 1 5 15080AA MARKING CASE TOP TOCO WATERTIGHT 1 6 14790 CASE BOTTOM ASSY OB WATERTIGHT 1 7 14594AA FLAT SEAL TOCO U S WATERTIGHT XDCR 1 8 14640 CABLE MOUNTING US WATERTIGHT 1 9 284106 SCR 4 40 PH 5 16L W SEAL PHIL SS LL 5 10 14638AA SCREW CAP WATERTIGHT 4 11 15254AA SCREW CAP FLAT MARING WATERTIGHT SCUCERS 1 13 281260 SCR SET 2 56 1 81 OVAL PT SS 1 16 7514CA ABDOMINAL STRAP GRAY 1 18 14855 WARNING TAG CABLES WATERTIGHT 1 19 13658FA LBL CE CAUTION IP68 WATERTIGHT XDCR 1 20 440011 LABEL 2 25X 75 SELF LAM WHITE 1 21 4991AA ACC PACKER 1 22 410069 PACK MATERIAL ST 1 23 410112 BAG AIRCAP 6 X 8 1 2 1 27 15264 SHIPPING LBL 2264 WATERTIGHT XDUCERS 1 30 13434AA LBL SHIP CRTN CE MARK VAR 1 31 160034 LOCTITE SUPERBONDE 0 32 162004 OIL SILICONE 3ML T
93. T ACCURACY A common mistake in the field is to adjust the printhead so that the first test pattern line prints at 0 mmHg on the paper rather than by measuring the nominal distance This method is often inaccurate as it does not account for paper variations For best results Use only GE paper Ensure paper is correctly loaded as instructed on page 4 2 Usea vernier caliper to adjust the printhead to its nominal position Revision C 170 Series Monitor 7 45 2000947 004 Serviceable Assemblies Servicing the Recorder Replacing the Recorder Motor Assembly Equipment Required Procedure 10 11 12 Cleaning the Printhead Phillips screwdriver Motor assembly part no 15136A Remove the AC line cord from the monitor to completely remove power Follow the instructions for Removing the Monitor Top Cover on page 7 19 Follow the instructions for Replacing the Main Board on page 7 35 Remove the two screws holding the motor mount in place Remove the two screws holding the motor assembly on the motor mount Retain the motor mount and all screws Install the new motor on the motor mount and tighten both screws Position the new motor in place aligning the motor gear with the roller gear Push the motor assembly slightly forward against the roller gear There should be a slight clearance between the teeth Check clearance by rotating the print roller back and forth There should be a s
94. UBE 0 227 15264DA SHIPPING LBL 2264DAX WATERTIGHT XDUCERS 1 Revision C 170 Series Monitor 2000947 004 11 17 Parts Lists 1509 Qwik Connect Plus Legplate Assembly Parts List 1509AAO BAO Qwik Connect Plus Legplate Assembly Parts List Table 11 9 1509AAO BAO Qwik Connect Plus Legplate Assembly Parts List Item Number Item Description Qty 1 2000532 001 CABLE STRAIN RELIEF 8 FEET 1 2 210227 CONTACT MALE 24AWG 16 5MM LG 11 3 210180 HALF SHELL W CLAMP 3 5MM 1 4 210181 CLAMP 3 7MM 1 5 210176 RING 1 6 210183 GRIPPER 3 5MM 1 7 210182 SCREW CLAMP M 2 6 X 10 2 8 608048 SHRINK TUBING 1 4 BLK 021 9 605105 WIRE 24 STRANDED GRN 125 10 210179 HALF SHELL W TONGUE 1 11 210178 RING PLASTIC 21 8 X4 1 12 212133 PLUG 12 CKT GREY BRN A D 1 13 210226 CONTACT MALE 24AWG 18MM L G 1 14 2000528 001 COVER INTERFACE CABLE 1 15 2002641 001 O RING 101 ID 070THK 70DUR SILICONE 1 16 2000529 001 PIN COAX RECEPTACLE 1 17 2000527 001 CABLE BASE INTERFACE 1 18 2000429 003 PCB LEG PLATE BD 1 19 2000208 001 SPRING WIRE LEG PLATE SNAP 125 STUD 1 20 440011 LABEL 2 25X 75 SELF LAM WHITE 1 22 2000595 001 LABEL SHIPPING FOR 1590AAO 1 23 410112 BAG AIRCAP 6 X 8 1 2 1 24 605106 WIRE 24 STRANDED BLUE 083 25 2002357 001 SPACER SPRING QWIK CONNECT PLUS 1 26 13658AA LABEL CE MARK ACCESSORIES WATERPROOF 1 11 18 170 Series Monitor 2000947 004 Revision C GE Medical Systems Information Techno
95. able needs to be maintained on a regular basis This chapter describes general care and cleaning instructions for the 170 Series Monitor and its accessories If an accessory is not listed consult the manufacturer s instructions This chapter describes the following Cleaning 52e ky ii hn e CY RR ER eere 9 2 Preventative Maintenance 9 5 Revision C 170 Series Monitor 9 1 2000947 004 Maintenance Cleaning Cleaning CAUTION PREPARATION Unplug the monitor from the AC power source and detach all accessories from the monitor Do not immerse accessories in any liquid Do not use abrasive cloth or cleaners monitor or accessories Cleaning the Monitor Exterior To clean the exterior of the monitor including the displays and the membrane switch panel 1 Wipe any fluids from the surface of the monitor 2 Dampena cloth or paper towel with isopropyl alcohol and gently rub soiled area until clean 9 2 170 Series Monitor Revision C 2000947 004 Maintenance Cleaning Cleaning the Tocotransducer Ultrasound Transducer and Legplate CAUTIONS ABRASION Do not use abrasive cloth sharp objects or abrasive cleaners ALCOHOL Do not use Alcohol in cleaning solutions DISCONNECTION Detach the transducers cables legplate from the monitor IMMERSION Do not immerse transducers cables legplate or hold under running
96. age set according to shipping destination Recorder Speed United States 3 cm min International 1 cm min Paper Scale United States 30 240 BPM International 50 210 BPM RS 232 Port 1 HP Communications Mode RS 232 Port 1 Baud Rate 1200 RS 232 Port 2 Communications Mode ext BP RS 232 Port 2 Baud Rate 600 Remote Mark Annotation on i HR Offset Models 172 173 and 174 only on with 10 minute auto revert UA Reference 10 relative units service setup mode 4 16 170 Series Monitor 2000947 004 Revision C Setup Procedures Customizing the Monitor Printing a Summary of Configuration Settings To print the software version number and a summary of configuration settings on the strip chart paper NOTE You can only enter the service setup mode from a power off state Enter the service mode Press and hold the Setup button Press and hold the blue Power button 5 Release both buttons The service mode is now activated 2 Press the Record button 3 Figure 4 13 shows a sample printout 2 E PAGES w REMAINING Pr P KS lt Figure 4 13 Configuration Summary Printout Revision C 170 Series Monitor 4 17 2000947 004 Setu
97. age at your facility 10 5 Record the patient to line leakage for the following conditions Table 9 11 Patient to Line Leakage Conditions for FECG Neutral Ground Power Polarity Closed Closed Normal Closed Closed Reversed Open Closed Normal Open Closed Reversed Enclosure Leakage 1 Wrap the entire monitor enclosure in aluminum foil 2 Configure a leakage tester to perform an enclosure leakage test 3 Turn ON the monitor using the monitor s On Standby button 4 Verify the following Normal 0 1 mA pass fail Single Fault 0 5 mA pass fail 9 18 170 Series Monitor Revision C 2000947 004 Maintenance Preventative Maintenance Inspection Dielectric Hi Pot Tests CAUTION POWER OFF Turn OFF the 170 Series Monitor prior to performing any of the hi pot tests Patient to AC Line Using DC Voltage for One Minute NOTE The hi pot tester voltage is 5 656 kVdc for these tests US Attach an US test body to the monitor s front panel US input Connect from the foil to line pass fail US2 Attach an US test body to the monitor s front panel US2 input Connect from the foil to line pass fail TOCO Attach a tocotransducer test body to the monitor s UA input Connect from foil to line pass fail IUP Attach an IUP test body to the monitor s front panel UA input Connect from foil to line pass fail FECG Attach an FECG test body to
98. am to the 170 Series Monitor After processing the request the 170 Series Monitor will then send only the selected parameters to the external computer The information selected by the external computer will be transmitted following the same criteria described for the 115 Update Mode The requested parameters may be changed at any time by the host computer by sending a new request sequence NOTE Refer to Requested Data Format on page 8 12 for information about the response data format The format is the same for both the 115 Update mode and the 115 Transmit Receive mode The format of the data requested by the external computer from the monitor is shown in Figure 8 2 NOTE This applies to 115 Transmit Receive mode only The definitions of the bytes are as follows Monitor Type This field contains a 1 byte ASCII value indicating the type of monitor from which information is being requested The 170 Series Monitor is set to a fixed value of 9 39H Data Field This field of 1 to 8 bytes indicates which parameters the external computer wishes to receive The values for the bytes are given in Table 8 3 End of Text This 1 byte field contains the value If this byte is sent immediately following the Monitor ID then the 170 Series Monitor will cancel transmission of all data 8 12 170 Series Monitor Revision C 2000947 004 Peripheral Devices RS 232 Connectors Transmitted Data Format The format of the informatio
99. and imaging suites The monitor is not recommended for use in these environments PERFORMANCE Report all problems experienced with the monitor If the monitor is not working properly contact your Service Representative for service The monitor should not be used if it is not working properly PINCHING Keep fingers clear of the paper roller because the roller could pinch your fingers TRAPPING Keep hands hair jewelry and loose clothing away from the paper roller because the roller could trap these items TRIPPING Arrange monitoring equipment so that cords and cables do not present a tripping hazard Revision C 170 Series Monitor 2000947 004 1 7 Safety Monitor Contraindications Warnings and Precautions Electromagnetic Interference This device has been tested and found to comply with the limits for medical devices to the IEC 601 1 2 1993 EN60601 1 2 1994 Medical Device Directive 93 42 EEC These limits are designed to provide reasonable protection against harmful interference in a typical medical installation However because of the proliferation of radio frequency transmitting equipment and other sources of electrical noise in the health care and home environments for example cellular phones mobile two way radios electrical appliances it 1s possible that high levels of such interference due to close proximity or strength of a source may result in disruption of performance of this device T
100. ase the US signal to 99 BPM to set off the alarm one more time It will take 30 seconds for the alarm to appear Revision C 170 Series Monitor 6 29 2000947 004 Functional Checkout Procedure Alarm Test 26 Use the simulator s Manual Adjustment knob to increase the US signal to 100 bpm Verify the following on the monitor The alarm tone continues sounding The Alarm indicator stops continues flashing The affected heart rate numerics continue flashing 27 Press the monitor s front panel Alarm Silence pushbutton Verify that the visual and audio alarm indications disappear 28 This concludes the functional checkout procedure 6 30 170 Series Monitor Revision C 2000947 004 Serviceable Assemblies This chapter provides information to aid in performing routine service and maintenance on a 170 Series Monitor This section of the manual is not intended as a substitute for proper professional training or familiarity with the 170 Series Monitor Only qualified service personnel should attempt servicing a 170 Series Monitor This chapter contains the following information General Anti Static Handling 7 2 Transducer Plug Replacement 7 3 Nautilus Transducer Cable 7 15 Removing the Monitor Top 7 19 Tocotransducer Calibration ss se
101. at they extend toward you Figure 4 5 Creating a Paper Leader 7 Place the pack in the drawer so that the pack is laying flat in the bottom of the paper tray Figure 4 6 Inserting the Paper Revision C 170 Series Monitor 4 5 2000947 004 Setup Procedures Loading Strip Chart Paper 8 Pull the paper leader taut at an angle between remaining pack and the paper guides The balance of the paper pack should stay flat in the drawer as shown in Figure 4 7 The paper guides are shown in Figure 4 8 Pull paper leader taut Remaining paper lays flat in drawer Figure 4 7 Paper Drawer Side Cutaway View 9 Slide the drawer closed by exerting even pressure on both sides of the drawer Avoid skewing the drawer in its tracks The pre printed vertical lines on the paper should be parallel to the printhead You will hear a click when the drawer is locked in place Paper Guide Paper Guide Figure 4 8 Closing the Paper Drawer IMPORTANT PAPER Paper should a ways be installed in the monitor The monitor runs a self test routine each time it is powered on part of this routine includes a recorder test 4 6 170 Series Monitor Revision C 2000947 004 Setup Procedures Turning the Monitor On Turning the Monitor On The 170 Series uses a universal AC to DC converter which accepts an AC input in the range 100 230 VAC The converter supplies a regulated 12 Vdc to
102. ate and set aside 5 Remove the three screws from the main board mounting plate and slide back and out to remove 6 Remove the two screws holding the drawer microswitch in place 7 Snip the sensor board cable tie located on the monitor bottom panel 8 Pull the recorder drawer forward slightly 9 Snip the cable tie on the back of the recorder drawer 10 Pull drawer forward and lift out CAUTION LOOSE ROLLERS The drawer rollers are normally held in place by the drawer Take care not to dislodge them while the drawer is removed 11 Turn drawer over and peel off the sensor board insulator 12 Remove the four flathead screws securing the sensor board Discard the board but retain the screws 13 Insert the new board secure all four screws and cover with a new insulated sheet 14 Secure the sensor board cable with a cable tie on the back of the recorder drawer 15 Align the drawer over the slot drop down and slide into place 16 Pull drawer fully foward to allow slack on the sensor board cable 17 Secure the sensor board cable with a cable tie on the monitor bottom panel Revision C 170 Series Monitor 7 47 2000947 004 Serviceable Assemblies Servicing the Recorder 18 Replace the microswitch and secure both screws Make sure the microswitch clicks when the drawer is closed 19 Replace the main board mounting plate pulling the plate forward parallel with the roller while tightening the screws 20 Retu
103. cement Procedure 1 Turn off the monitor 2 Unplug the transducer from the monitor 3 Use the screw cap extraction tool to pry off the five screw caps Refer to Figure 7 5 Discard all caps CAUTION HANDLING Take care not to damage the transducer base sealing groove 4 Remove the five sealing screws and discard 5 Remove the transducer cover and flat seal o ring Discard both items 6 Follow the instructions for Nautilus Transducer Reassembly on page 7 32 Revision C 170 Series Monitor 7 31 2000947 004 Serviceable Assemblies Nautilus Transducer Reassembly Nautilus Transducer Reassembly CAUTIONS VISIBLE INSPECTION Ensure the base sealing groove flat seal o ring sealing surface and sealing screws are free of visible surface defects dust dirt and foreign material SINGLE USE COMPONENTS Do not reuse case top flat seal o ring sealing screws or screw caps Discard these items each time a transducer is opened SEALS Wetting of seals is not required Install new flat seal o ring Install case top and tighten five sealing screws Hand tighten each screw a small amount going in a clockwise direction skipping every other screw Repeat until all screws are torqued to 48 in oz Apply one drop of Loctite adhesive to the perimeter of the hole for the flat screw cap Figure 7 5 Insert flat screw cap and press into place Apply one drop of Loctite adhesive to the perimeter o
104. conditions Table 9 5 Patient to Line Leakage Conditions for US2 Neutral Ground Power Polarity Closed Closed Normal Closed Closed Reversed Open Closed Normal Open Closed Reversed 9 12 170 Series Monitor Revision C 2000947 004 Maintenance Preventative Maintenance Inspection Patient to Ground Leakage for TOCO 1 Connect a tocotransducer test body to the monitor s front panel UA input 2 Configure a leakage tester to perform a patient leakage test 3 Turn ON the monitor using the monitor s On Standby button 4 Verify the following 504A 132 253 VAC or at the line voltage at your facility 10 5 Record the patient to ground leakage for the following conditions Table 9 6 Patient to Ground Leakage Conditions for TOCO Neutral Ground Power Polarity Closed Closed Normal Closed Open Normal Closed Open Reversed Closed Closed Reversed Open Closed Normal Open Closed Reversed Revision C 170 Series Monitor 9 13 2000947 004 Maintenance Preventative Maintenance Inspection Patient to Line Leakage for TOCO 1 Connect a tocotransducer test body to the monitor s front panel UA input 2 Configure a leakage tester to perform a line leakage test 3 Turn ON the monitor using the monitor s On Standby button 4 Verify the following O 504A 132 253 VAC or at the line voltage at your facility 10 5 Record the patie
105. d contains two ASCII characters indicating the mode The first character is the combined mode of both heart rates according to Table 8 4 The second character is the mode for uterine activity as listed in Table 8 5 Mode data is transmitted at startup with each mode change with each request and once every minute Revision C 170 Series Monitor 8 13 2000947 004 Peripheral Devices RS 232 Connectors m Fetal Movement This field contains one ASCII character representing the current status of the FM signal low or high If the data byte 15 a 0 30H then the signal 15 low indicating no movement is detected if the data byte is 1 31H then the signal is high indicating fetal movement is detected If the fetal movement feature is not in the monitor the data byte is 2 32H If the fetal movement feature is present but not enabled the data byte is 4 34H This data is transmitted four times per second Fetal movement detection circuitry is an option which can be purchased for the 170 Series Monitor m Recorder Status This field contains one ASCII character representing the current status of the PAPER OUT signal low or high If the data byte is a 0 30H then the signal is low indicating paper is loaded and the recorder door is closed if the data byte is 1 31H then the signal is high indicating a paper out condition This data is transmitted once per second when active End of Text This 1 byte field contains the value
106. ddress decoding Recorder control latch and head protection timer SPI chip select and clock control Recorder serial interface to peripheral devices Figure 5 11 Processing Circuitry Block Diagram Revision C 170 Series Monitor 5 19 2000947 004 Theory of Operation Main Board Theory of Operation The processor U1 is an Hitachi SH3 used with a 32 bit data bus and 24 bit address bus Series 100 Q resistors and 100 kQ pull up resistors are provided for all address data bus and output lines The series resistors limit transient response resulting in better EMI performance Pull up resistors prevent these lines from floating 1f the processor enters sleep mode which tri states these lines Crystal X2 15 the main crystal for the processor running at 12 288 MHz Mode lines which the CPU examines at power up are pulled up and down to set the CPU to mode 4 This allows the CPU to run internally at either X2 x 1 12 288 MHz or X2 x 4 49 152 MHz The external bus and SYSCLK run at the X1 frequency Crystal X1 is for the processor s real time clock The real time clock is not used however in addition to time date it can be used to process interrupts for exiting sleep mode A MAX809 reset IC U2 monitors 3 V backup power to hold RESET low during power up from the AC line cord and or the DC power cable Power up reset using the power button is accomplished through an external RC circuit R544 C285 for a shorter on reset time Four
107. ding 1 Remove the nameplate and sealing tape from the top cover of the Trimline Tocotransducer 2 Setthe GAIN and ZERO CTR potentiometers in the tocotransducer fully counterclockwise 3 Setthe ZERO TRIM potentiometer to its mid position approximately six turns from fully counterclockwise 4 Locate TP2 and TP9 ground on the Main Board in the 170 Series Monitor 5 Connect the positive lead of the digital voltmeter to TP2 connect the negative lead to TP9 6 Apply power to the 170 Series Monitor then plug the CMR Test Jack into the monitor s front panel uterine activity connector 7 Measure the voltage at TP2 and record the value 8 Replace the CMR Test Jack with the tocotransducer to be calibrated 9 Place the tocotransducer on a flat surface so that the button is face up then center the 52 5 gram weight on the button 10 Adjust the ZERO CTR and or the ZERO TRIM potentiometer s so that the voltage measured across TP2 and TP9 matches the reading recorded in step 7 0 04 V This voltage is referred to as the WEIGHT ON voltage The ZERO CTR potentiometer provides course adjustment The ZERO TRIM potentiometer provides fine adjustment 11 Remove the weight and observe the voltage reading this voltage is referred to as the WEIGHT OFF voltage A correctly adjusted transducer will show a voltage change of 0 115 V 0 015 V from the WEIGHT ON to WEIGHT OFF voltage If the change is less than 0 1 V adjust the
108. e Conditions Neutral Ground Power Polarity Closed Closed Normal Closed Open Normal Closed Open Reversed Closed Closed Reversed Open Closed Normal Open Closed Reversed 9 8 170 Series Monitor Revision C 2000947 004 Maintenance Preventative Maintenance Inspection Patient to Ground Leakage for US 1 Connect an ultrasound test body to the monitor s front panel US input 2 Configure a leakage tester to perform a patient leakage test 3 Turn ON the monitor using the monitor s On Standby button 4 Verify the following O 504A 132 253 VAC or at the line voltage at your facility 10 5 Record the patient to ground leakage for the following conditions Table 9 2 Patient to Ground Leakage Conditions for US Neutral Ground Power Polarity Closed Closed Normal Closed Open Normal Closed Open Reversed Closed Closed Reversed Open Closed Normal Open Closed Reversed Revision C 170 Series Monitor 9 9 2000947 004 Maintenance Preventative Maintenance Inspection Patient to Line Leakage for US 1 Connect an ultrasound test body to the monitor s front panel US input 2 Configure a leakage tester to perform a line leakage test 3 Turn ON the monitor using the monitor s On Standby button 4 Verify the following 504A 132 253 VAC or at the line voltage at your facility 10 5 Record the patient to line leakage for the following conditions
109. e button is released the recorder prints the time date active trends legends and chart speed ie Mark Offset Button The Mark Offset button is a multifunction button Mark Briefly pressing the button prints an event mark T on the bottom two lines of the heart rate grid Offset Models 172 173 and 174 Only When the heart rate offset mode is enabled pressing and holding the Mark Offset button for at least two seconds shifts the secondary FHR trend 20 BPM for visibility purposes You will hear a beep for confirmation Refer to the 170 Series Operator s Manual for more information Revision C 170 Series Monitor 3 3 2000947 004 Controls Indicators and Connectors Front Panel Controls Setup Button Volume Buttons Model 171 Models 172 173 and 174 Setup Mode Pressing and holding this button while the monitor is on enters a user setup mode for configuring the monitor Pressing and holding this button during power up enters a service setup mode Refer to Chapter 4 Setup Procedures for instructions The Volume buttons are used to raise A and lower V the volume of the audio signals emitted by the speaker The volume buttons are also used during setup This monitor has two volume buttons used to control the ultrasound audio These monitors have four volume buttons The left pair controls the audio signals for the mode shown in the primary FHR display likewise the right pair of
110. e electrodes is required to minimize harm to the patient ELECTRICAL SHOCK To reduce the risk of electrical shock do not remove monitor cover Refer servicing to qualified personnel ELECTROMAGNETIC INTERFERENCE Be aware that strong electromagnetic fields may interfere with monitor operation Interference prevents the clear reception of signals by the monitor If the hospital is close to a strong transmitter such as TV AM or FM radio police or fire stations a HAM radio operator an airport or cellular phone their signals could be picked up as signals by the monitor If you feel interference is affecting the monitor contact your Service Representative to check the monitor in your environment Refer to page 1 8 for additional information 170 Series Monitor Revision C 2000947 004 Safety Monitor Contraindications Warnings and Precautions WARNINGS ELECTROSURGERY The monitor is not designed for use with high frequency surgical devices In addition measurements may be affected in the presence of strong electromagnetic sources such as electrosurgery equipment EXPLOSION HAZARD Do not use this equipment in the presence of flammable anesthetics or inside an oxygen tent GROUNDING Do not defeat the three wire grounding feature of the power cord by means of adaptors plug modifications or other methods A dangerous shock hazard to both patient and operator may result INSTRUCTIONS For continued and
111. e out of the way For Nautilus Tocotransducers only Slide Oetiker clamp over end of cable This clamp is not necessary for Trimline Tocotransducers Score around grey cable jacket 1 inch Peel and remove jacket Trim filler flush to Jacket For Nautilus Tocotransducers only Cut vent tubing flush with Jacket being careful not to restrict air flow The vent tubing is not present in Trimline cables Pull back the braided shield and twist into pigtail Solder the 2 inch prepared green wire to the shield wrapping the 34 inch strip on to the shield Cut wire flush with other conductors of the cable Install shrink tubing over the solder joint of the shield Strip all conductors 14 inch Twist and tin conductors Locate the grounding contact pin longer pin in the kit Solder this pin to the shield wire Solder a short pin to the yellow wire and one end of the green jumper wire Both wires share this pin Solder a short pin to the free end of the green jumper wire Solder a short pin to each of the other conductors For Nautilus Tocotransducers only Crimp Oetiker clamp over cable jacket 14 inch from end Continue with Plug Assembly on page 7 13 Revision C 170 Series Monitor 7 5 2000947 004 Serviceable Assemblies Transducer Plug Replacement Kits Oetiker Clamp Nautilus only Shield 1 Shrink Tubing co O Vent Tube Nautilus only 1 24 AWG Green Jumpe
112. e recorder prints a continuous line at the default value on the uterine activity channel of the strip chart paper The recorder prints the messages and UA REF on the strip chart paper 7 Press and hold the UA Reference button on the monitor to cycle through the available selections for UA reference 5 10 15 20 or 25 relative units Test each of these reference settings Verify that the UA value is displayed accordingly and that the recorder prints a continuous line at the corresponding value on the uterine activity channel of the strip chart paper 8 Place the simulator s UA Level switch at each of the level settings 0 10 50 and 100 relative units Verify that the UA value is displayed accordingly and that the recorder prints a continuous line at the corresponding value on the heart rate channel of the strip chart paper Table 6 5 Uterine Activity Test Simulator Settings Section Switch Setting General Pattern Memory OFF Main LEVEL UA Level 0 mmHg Mode TOCO 9 Pressthe UA Reference button to reference to 10 relative units If the default is set to a different value press and hold the UA Reference button to cycle to 10 10 Place the simulator s UA Level switch to the RAMP position Verify that the UA value measures a ramp between 10 and 100 relative units and that the recorder prints a ramp between the same values Refer to Figure 6 5 Revision C 170 Series Monitor 6 19 200094
113. e the simulator s Manual Adjustment knob to increase the US rate to 181 BPM to set off the alarm once more It will take five minutes for the alarm appear Use the simulator s Manual Adjustment knob to decrease the US rate to 180 BPM Verify the following on the monitor The alarm tone continues sounding The Alarm indicator continues flashing The affected heart rate numerics continue flashing Press the monitor s front panel Alarm Silence pushbutton Verify that the visual and audio alarm indications disappear Using the simulator s Manual Adjustment knob input an US signal of 101 BPM Verify that there is no alarm tone sounding from the monitor s speaker Using the simulator s Manual Adjustment knob decrease the US rate to 100 BPM Again verify that there is no alarm tone sounding from the monitor s speaker Using the simulator s Manual Adjustment knob decrease the US rate to 99 bpm After 30 seconds verify the following on the monitor The alarm tone is emitted from the monitor s speaker The Alarm indicator flashes The affected heart rate numerics flash Press the monitor s front panel Alarm Silence pushbutton Verify that the visual and audio alarm indications disappear Use the simulator s Manual Adjustment knob to increase the US signal to 100 BPM Verify that the Alarm indicator goes out and the heart rate numerics stop flashing Use the simulator s Manual Adjustment knob to decre
114. ected to the monitor s US input receptacle try to maintain a steady rate and verify the following on the monitor The FHRI value responds to the rubbing The FHR1 heartbeat indicator KV responds to the input The recorder prints the heart rate tracing corresponding to the rate and the trace is plain black Use your finger to rub the face of the ultrasound transducer connected to the monitor s US2 input receptacle try to maintain a steady rate and verify the following on the monitor The FHR2 value responds to the rubbing The FHR2 heartbeat indicator responds to the input The recorder prints the heart rate tracing corresponding to the rate and the trace is bold black v Revision C 170 Series Monitor 6 27 2000947 004 Functional Checkout Procedure Alarm Test Alarm Test This portion of the test ensures the integrity of the audio alarms and tests the alarm limit software 1 2 10 11 12 13 14 15 Connect the Model 325 Simulator s US sub cable to the monitor s US input Press and hold for three seconds Setup to enter the monitor s setup mode Set the FHR alarm enable to Set the FHR high alarm limit value to 180 BPM Set the FHR low alarm limit value to 100 BPM Set the FHR audio alarm to a level you can easily hear Press the Setup button to exit the setup mode Press the monitor s Record button Verify that the FHR high and low limits pr
115. ed of U41 and associated components The output of the fetal movement filter is input to the analog to digital converter The output of the main filters are input to U10 through capacitors C44 and C45 The input impedance of these inputs is 10 kO thus producing a high pass filter at 72 Hz A tone 15 also one of the inputs to U10 through a high pass filter at 15 Hz and a gain reduction of 21 dB The components comprising the filter are C47 and R223 U10 is a quad digital potentiometer with 255 step producing a gain range from 0 to 48 dB It is controlled by the serial peripheral interface SPI system bus Ultrasound audio Channel 1 and Channel 2 is output on U10 pin 8 and U10 pin 4 respectively These outputs are buffered by U11 pin 7 and U11 pin 8 respectively The buffered outputs are high pass filtered at 80 Hz by C57 R236 and C58 R237 They are then half wave rectified by U13 pin 8 and its associated components The output of the rectifier is band pass filtered from 43 to 260 Hz ata gain of 7 3 by U13 pin 1 and its associated components This effectively doubles the frequency which is necessary because the transducer operates at a low RF frequency 1 151 MHz and the frequencies produced from the fetal heart would not produce acceptable audio quality The output of U13 pin 1 is input to summing amplifier U11 pin 14 The tone output of U10 pin 18 is also summed by U11 pin 14 which is a low pass filter at 2600 Hz with a
116. ed with FECG unit only Event Mark Uterine Activity Alarm Silence R SETUP 1 Press and hold Cn to enter exit the user setup mode Refer to the table at the bottom for feature codes and available settings The feature code displays in the UA display the setting or value displays in the FHR display 2 Press toaltemate between displays The sign lights when the UA display is active the heartbeat indicator C7 lights when the FHR display is active 3 Use A or V7 to change the number in the active display On dual FHR units use the left set of volume controls In the example below the FHR high alarm limit code 2 is set to 185 BPM SETTING OR VALUE MONITOR FEATURE CODE IN FHR DISPLAY INUA DISPLAY off 1l on 1 FHR alarm enable disable 140 210 BPM by 5 BPM 2 FHR high alarm limit 50 140 BPM by 5 BPM 3 FHR low alann limit 2 10 4 FHR alarm volume 0 59 10 minutes 023 11 hours 1 31 12 day 1 12 13 month 00 99 14 SERVICE CODES l Enter the Service Setup Mode Press and hold the Setup button Ga Press and hold the blue Power button O Release both buttons 2 Refer to the table below for feature codes and available settings 3 Press the Setup button Gg to exit the Service Setup Mode The monitor automatically tums to standby SETTING OR VALUE V MONITOR FEATURE CODE INFHR DISPLAY INUA DISPLAY 07 off 1 173 174 20 ECG Artifact Elimination 0 7 of
117. ee aes 6 19 Tocotransducer Vest XS RR RSEN ES 6 21 Strain Gauge Transducer Test 2 orii eere 6 22 Pattern Memory Test i censo eben eme oso 6 23 Dual Heart Rate Test 6 24 Alana MN DE 6 28 Revision C 170 Series Monitor 2000947 004 6 1 Functional Checkout Procedure Equipment Required Equipment Required Table 6 1 provides a complete listing of equipment required for a functional checkout procedure Table 6 1 Equipment Required Test Equipment FECG m Model 325 Simulator 14203A B m Monitor Interconnect Cable 14212A B m Legplate for Qwik Connect Plus with round connector 9 1590 US FMD m Model 325 Simulator 14203A B m Monitor Interconnect Cable 14212A B US Transducer m Nautilus Ultrasound Transducer 5700GAX 5700MAX Series TOCO IUP m Model 325 Simulator 14203A B m Monitor Interconnect Cable 14212A B Tocotransducer m Nautilus Tocotransducer 2264GAX 2264MAX Series Strain Gauge Transducer m Reusable Strain Gauge with holder 4007BAX or m Reusable Strain Gauge without holder 4007LAX or m Disposable Strain Gauge 4009AAX NOTE These items are no longer sold by GE However transducers in the field are compatible with the 170 Series Monitor Pattern Memory m Model 325 Simulator 14203A B m Monitor Interconnect Cable 14212A B Dual Heart Rate FECG US m
118. egplate Inspection a 6 12 Ultrasound eee RR eR EE rn 6 13 Fetal Movement Detection Test 6 16 Ultrasound Transducer 6 18 Uterine Activity Test 6 19 Tocotransducer Test 6 21 Strain Gauge Transducer Test 6 22 Pattern Memory Test 6 23 Dual Heart Rate Test Non Pattern 6 24 Corometrics 170 Series Revision C 2000947 004 Alarm T st i ih e ah Dex acia pa wa Dk ace ER Ra rU 6 28 Serviceable Assemblies 7 1 General Anti Static Handling 7 2 Transducer Plug Replacement 7 3 Nautilus Transducer Cable Replacement 7 15 Removing the Monitor Top Cover 7 19 Tocotransducer Calibration 7 20 Nautilus Ultrasound Transducer Top Cover Replacement 7 30 Nautilus Transducer Reassembly 7 32 Testing a Repaired Transducer US 7 34 Replacing the Main
119. eld Type Response Type ASCII Character Hexadecimal Value Heart Rate 1 60 Uterine Activity a 61 Modes b 62 Event Mark d 64 Heart Rate 2 e 65 Fetal Movement f 66 Paper Out g 67 Revision C 170 Series Monitor 2000947 004 8 15 Peripheral Devices RS 232 Connectors Table 8 4 Heart Rate Modes HR1 Mode HR2 Mode ASCII Character Hexadecimal Value INOP INOP 0 30 FECG INOP 1 31 US INOP 2 32 US FECG 9 39 US US2 3B FECG US lt 3C INOP US2 gt Table 8 5 Uterine Activity Modes UA Mode ASCII Character Hexadecimal Value INOP 0 30 TOCO 1 31 IUP 2 32 8 16 170 Series Monitor Revision C 2000947 004 Peripheral Devices RS 232 Connectors Cabling Information Monitor RS 232 Connector The 170 Series Monitor s RS 232C Ports each use an 8 pin RJ 45 connector shown in Figure 8 4 The following control signals are supported m Request to Send RTS This output line is asserted 12 V whenever the 170 Series Monitor is on and operating it can be used to determine whether the monitor is powered on m Transmit Data TXD This output line provides the serial data sent to the external computer from the 170 Series Monitor m Clear to Send CTS This input line must be asserted in order to enable the transmission of data from the 170 Series Monitor Under conditions where no modem is used the line can be tied to the RTS line of the mon
120. elope Switch Filter Detector CH1 Telemetry Audio Telemetry _ Fetal Movement Switch Detection Filter Control Lines Figure 5 17 Ultrasound Module Block Diagram Revision C 170 Series Monitor 5 27 2000947 004 Theory of Operation Main Board Theory of Operation Ultrasound Oscillator Pin Diode Circuitry Transmission Reception Internal gates located in integrated circuit U50 X4 and associated components comprise a crystal controlled oscillator running at 4 604 MHz The inverted output of this oscillator is the clock that is used to clock latch U48 therefore changes at the outputs of U50 are not clocked out of U48 until one half clock cycle later The system runs at a frequency of 2 kHz 4 604 MHz 1151 2 2 kHz and the time for each transmission and reception is 250 us 1 2000 2 250 us The signal TRANS BURST is a square wave at a frequency of 1 151 MHz It is initiated four clock cycles after the internal reset of the binary counter within U50 used to decode the signals used by the ultrasound system and continues 428 clock cycles The signal DET BURSTI is also a square waves at a frequency of 1 151 MHz This signal is output 640 clock cycles after reset and continues up to 1020 clock cycles The signals PIN1 and PIN2 from PAL U50 turn on the appropriate switches of U47 so as to bias pin diodes D21 and D22 on this in turn provides a low impedance path for the Channel 1 transducer to the ultrasound transmitter and prea
121. eplace the connector shield main board and top cover 7 40 170 Series Monitor Revision C 2000947 004 Serviceable Assemblies Servicing the Recorder Servicing the Recorder Replacing the Printhead Equipment Required Phillips screwdriver Vernier caliper Printhead part no 2000133 001 Procedure 1 Remove the AC line cord from the monitor to completely remove power 2 Follow the instructions for Removing the Monitor Top Cover on page 7 19 3 Pry the printhead cable connectors free from the back of the printhead 4 Open the recorder drawer 5 Remove the four screws two per side holding the printhead in place The printhead will drop out 6 Insert the new printhead aligning the edges near the ends flush with the support plate Secure with the four screws 7 Slowly close the drawer observing the roller and printhead Ensure that the roller is parallel to the printhead striking the printhead evenly as the drawer shuts 8 Replace the printhead cable 9 Verify that there is a slight gap 0 003 in minimum between the shoulder nut standoff and the downstop plate without paper installed Adjust accordingly 10 Follow the instructions for Aligning the Printhead on page 7 43 11 Once the recorder prints satisfactorily secure the monitor top cover in place Revision C 170 Series Monitor 7 41 2000947 004 Serviceable Assemblies Servicing the Recorder Adjusting the Printhead Current
122. er Signal Name Signal Description 1 SPKR LO Speaker Low Side Connection 2 SPKR HI Speaker High Side Connection Table 5 8 Remote Mark Connectors Remote Event Marker and Fetal Acoustic Stimulator Pin Number Signal Name Signal Description 1 Tip Remote Event Marker or Fetal Acoustic Stimulator 2 Shunt No Connection 3 NC No Connection 4 Sleeve Ground Figure 5 4 Remote Mark Connectors Revision C 170 Series Monitor 2000947 004 5 7 Theory of Operation Functional Overview Table 5 9 Ultrasound Connector s Pin Signal Name Signal Description 1 NC No Connection 2 NC No Connection 3 GND Chassis Ground 4 XMIT RCV SHIELD Shield for Transmit Receive 5 XMIT RCV Transmit Receive 6 NC No Connection 7 NC No Connection 8 NC No Connection 9 GND Chassis Ground 10 NC No Connection 11 U S ENABLE Enable for Ultrasound Channel 12 GND Chassis Ground Active low Figure 5 5 US Connector s facing the front panel from the outside 5 8 170 Series Monitor Revision C 2000947 004 Theory of Operation Functional Overview Table 5 10 FECG Connector Model 173 Pin Signal Name Signal Description 1 NC No Connection 2 FECGEN Enable for FECG Channel 3 GND Chassis Ground 4 NC No Connection 5 NC No Connection 6 LA Left Arm Right Arm 8 SHIELD Shield 9 NC No Connection 10 NC No Connection 11 NC
123. erator s Manual Inspect the following for excess wear and or signs of damage L E DJ E DB D DB D DB DI EI EI Power Supply Cord AC to DC Converter AC Line Cord Ultrasound Transducer s Legplate s IUPC Transducer s Remote Event Marker Monitor Input Receptacles Chassis Membrane Switch Panel Internal Harnesses Connectors Display Panel Revision C 170 Series Monitor 9 5 2000947 004 Maintenance Preventative Maintenance Inspection Cleaning O Clean the monitor s exterior Refer to Cleaning the Monitor Exterior on page 9 2 O Clean the recorder printhead Refer to Cleaning the Printhead on page 7 46 O Clean the monitor s accessories Refer to Cleaning the Tocotransducer Ultrasound Transducer and Legplate on page 9 3 O Clean the monitor s interior using a hand held vacuum Calibration O Adjust the printhead Refer to Aligning the Printhead on page 7 43 O Calibrate the tocotransducer s Refer to Tocotransducer Calibration on page 7 20 9 6 170 Series Monitor Revision C 2000947 004 Maintenance Preventative Maintenance Inspection Electrical Safety Tests Recommendations Test Conditions Electrical safety tests provide a method of determining if potential electrical hazards to the patient or operator of the device exist GE recommends that you perform all safety tests presented in this chapter upon receipt of the device monitor and its
124. es 16 MENU Input Menu Switch Input Active low 5 14 170 Series Monitor 2000947 004 Revision C Theory of Operation Functional Overview Table 5 16 FECG UA Option Interface Part One J16 Models 173 174 Only Signal Type Pin Number Signal Name Relative To Main Signal Description Board 1 12V Output 12 V for FECG Isolated Power Supply 2 GND Output 12 V Ground 3 5V Output 5 V Supply 4 7 5V Output 7 5 V Supply 5 2 5VREF Output 2 5 V Reference 6 IUPEN Input IUP Enable Output 7 3 3VANA Output 3 3 V for Analog 8 144KC Output 144 KHz for Isolated Power Supply 9 3 3VANA Output 3 3 V for Analog 10 AGND Output Analog Ground 11 FECGOUT Input FECG Analog Output 12 PRESSOUT Input Pressure Analog Output 13 FECGEN Input FECG Enable Active Low 14 NC 171 172 173 No Connection 171 172 173 CLEAR 174 Output Clear Model 174 15 TOCOEN Input TOCO Enable 16 NC No Connection Active low Revision C 170 Series Monitor 5 15 2000947 004 Theory of Operation Functional Overview Table 5 17 FECG UA Option Interface Part Two J15 Models 173 174 Only Signal Type Pin Number Signal Name Relative To Main Signal Description Board 1 RA Output Right Arm Input from Patient Connector 2 LA Output Left Arm Input from Patient Connector 3 RL Input Right Leg Drive Signal from FEC
125. es Monitor 1 5 2000947 004 Safety Monitor Contraindications Warnings and Precautions WARNINGS LINE ISOLATION MONITOR TRANSIENTS Line isolation monitor transients may resemble actual cardiac waveforms and thus cause incorrect heart rate determinations and alarm activation or inhibition STRANGULATION Make sure all patient cables leadwires and tubing are positioned away from the patient s head to minimize the risk of accidental strangulation WATER BIRTHS Do not use the monitor to directly monitor patients during water births in whirlpool or submersion water baths during showers or in any other situation where the mother is immersed in water Doing so may result in electrical shock hazard 170 Series Monitor Revision C 2000947 004 Safety Monitor Contraindications Warnings and Precautions Cautions CAUTIONS ANNUAL SERVICING For continued safety and performance of the monitor it is recommended that the calibration accuracy and electrical safety of the monitor be verified on an annual basis by an GE Service Representative DAILY TESTING It is essential that the monitor and accessories be inspected every day It is recommended practice to initiate the monitor s self test feature at the beginning of each monitoring session follow the instructions in Chapter 4 Setup Procedures ENVIRONMENT The performance of the monitor has not been tested in certain areas such as x ray
126. f 1 172 173 17 21 Heartbeat Coincidence 07 off 2 Fetal Movement Enable Disable ICE French 4 Japanese 5 Italian 6 Swedich 7 Dutch B Portuguese 23 Language 9 Chinese 1 1 J 3 3 24 Chart Speed 0 30 240 1 250 10 BPM 25 Paper Scale 0 HP 1 HPwinotes 2 Ext 3 FactoyTest 4 Ext FSp02 30 40 Communications Mode port 1 2 5 115 Update 6 115 Transmit Receive 300 600 1200 2400 1400 5600 19200 38400 31 41 Baud Rate port 1 2 0 1 1 21 50 Remote Mark Annotation Style O off 1 10mm 2 0n 172 173 174 52 Fetal Heart Rate Offset Enable Disable 5 10 15 20 25 relative units 53 UA Reference Default 0 255 100 Recorder Alignment Refer to the 170 Series Service Manual for more information Cozcenetrics and Manquette are registered trademarks of GE Medical Systems Syformation Technologies GE is a registered trademark of General Electic Company 2000 GE Medical Systems Teclmologia Allmghtsreservad No part of dus document may be reproduced without the permission of GE Medical Systems Jpormasion Technologies AX CAUTION Inthe United States cf America Federal Law restricts this device to sale by or on the order of a physician PIN 2003024 001 REV 01 01 Revision C 170 Series Monitor 4 19 2000947 004 Setup Procedures Flasher Software Utility Upgrade Flasher Software Utility Upgrade The Corometrics Flasher is a software utility program which uses one of the monitor s RS
127. f the hole for a curved screw cap Insert the curved screw cap being careful to align it according to the curvature of the case top the small burr on the screw cap side should face the outside edge of the transducer See Figure 7 10 and Figure 7 11 Press the screw cap firmly into place Repeat for the remaining three curved screw caps For button style transducers only install and torque belt knob to 48 in oz Refer to Testing a Repaired Transducer TOCO or US on page 7 34 l Using Loctite Adhesive 454 is recommended in order to secure the screw caps 7 32 170 Series Monitor Revision C 2000947 004 Serviceable Assemblies Nautilus Transducer Reassembly Figure 7 10 Curved Screw Cap Shape Nautilus Transducer Figure 7 11 Curved Screw Cap Alignment Nautilus Transducer Revision C 170 Series Monitor 2000947 004 Serviceable Assemblies Testing a Repaired Transducer TOCO or US Testing a Repaired Transducer TOCO or US CAUTIONS Following completion of the cable replacement procedure LEAKAGE TEST Perform a leakage and dielectric test on the transducer per applicable standards FUNCTIONAL TEST Perform a functional response test on the transducer 7 34 170 Series Monitor Revision C 2000947 004 Serviceable Assemblies Replacing the Main Board Replacing the Main Board Equipment Required Procedure Phillips screwdriver Main
128. ffer Display Board to Data Bus Latch gt for Pressure 77 Transistor Drivers 4 Display Figure 5 13 Display Module Interface Block Diagram Status Switch Input Module Membrane Switch Inputs Recorder Status Inputs The status switch input module consists of buffers U15 and U16 and series parallel elements for protection against ESD The monitor membrane switch panel provides 11 switch closures to ground which are fed to 100 kQ pull up resistors and through 10 kQ series elements Buffers U14 and U15 are further protected by capacitors to ground and diode clamp devices U17 and U22 Two LEDs are present on the membrane switch panel the power LED is driven by 5 V through resistor R350 the recorder LED is driven from PAL U4 through buffer U6 and resistor R351 Figure 5 14 provides a block diagram of the status switch input module Data to Data Bus Buffers Figure 5 14 Status Switch Input Module Block Diagram 5 22 170 Series Monitor Revision C 2000947 004 Theory of Operation Main Board Theory of Operation Communications Module The communications section consists of quad UART U21 and RS 232 transceivers U19 and U20 The baud rate frequencies are generated from crystal X3 3 6864 MHz Two ofthe RS 232 channels are used for external communications while the remaining two provide spare internal channels Each channel has four ports for RTS
129. g contact your GE Service Representative immediately Table 7 1 Kit Summary Plug Kit Plug Type Cat No REF Tocotransducer Cable m Trimline 2260 Series 6158J m Nautilus 2264 Series Ultrasound Transducer Cable m Standard 5700 Series 8675A m Nautilus 5700 Series FECG Cable Legplate 6158F Table 7 2 Packing List Item Quantity Contact Pin male 24 AWG 16 5 mm 11 Contact Pin male 224 AWG 18 mm 1 Gripper of appropriate size m 3 5 mm for smaller cables TOCO 1 m 5 7 mm for larger cables US FECG Plastic Ring 21 8 x 4 mm 1 Retaining Ring 1 Strain Relief Clamp 3 7 mm 1 Screw for above clamp M 2 6 x 10 2 Half Shell with Clamp of appropriate size m 3 5 mm for smaller cables 1 m 5 7 mm for larger cables Half Shell with Tongue 1 Color Coded Connector Plug 12 pin 1 Oetiker Clamp 1 The Oetiker clamp is used only for Nautilus Tocotransducers 2264 Series Revision C 170 Series Monitor 7 3 2000947 004 Serviceable Assemblies Transducer Plug Replacement Kits Handling Precautions Equipment Required Transducers are delicate measuring instruments and must be handled accordingly Transducer damage can be avoided by taking the following precautions Avoid banging or dropping transducers Refrain from wrapping transducer cables around transducer body Do not immerse transducers in aqueous cleaning solutions Do
130. g and strip each end 4 inch This will be used as a jumper wire Route the transducer cable through the gripper Slide the gripper followed by the retaining ring down the cable until they are out of the way Score around cable jacket 1 inch Peel and remove jacket Trim filler flush to jacket Pull back the braided shield and twist into pigtail Strip black conductive coating back to the outer jacket Solder the 2 inch prepared green wire to the shield wrapping the 34 inch strip onto the shield Cut the wire flush with other conductors of cable Install shrink tubing over the solder joint of the shield Strip all conductors 14 inch Twist and tin conductors CAUTIONS CABLE IDENTIFICATION Identify each cable as it is stripped since colors will be difficult to determine once the sleeving contracts HEAT Avoid excess heat when tinning ends and soldering braids since the polyethylene inner insulation melts very easily Slide shrink tubing over cable Locate the grounding contact pin longer pin in the kit Solder this pin to one end of the blue jumper wire Solder a short pin to the blue wire and the free end of the blue jumper wire Both wires share this pin Solder a short pin to each of the other conductors Continue with Plug Assembly on page 7 13 7 10 170 Series Monitor Revision C 2000947 004 Serviceable Assemblies Transducer Plug Replacement Kits p 1 n gt lew Oo
131. g to the ultrasound transducer type Standard Ultrasound Transducer This cable is a dual coaxial cable Cut off black coaxial cable and fillers flush to jacket Nautilus Ultrasound Transducer This cable is a single coaxial cable Trim fillers flush to jacket Score around the white jacket leaving of the jacket remaining Pull back the inner shield and twist into a pigtail The clear dielectric is now exposed Solder remaining piece of green wire to inner shield wrapping the 4 inch strip onto shield Cut wire flush with other conductors Install shrink tubing over the solder joint between the white coaxial cable and the inner shield Strip the three conductors inch clear and both green Twist and tin conductors Locate the grounding contact pin longer pin in the kit Solder this pin to the inner shield Solder a short pin to the clear conductor and the outer shield Solder a short pin to each end of the green jumper wire 1 1 inches long Continue with Plug Assembly on page 7 13 Revision C 170 Series Monitor 7 7 2000947 004 Serviceable Assemblies Transducer Plug Replacement Kits m Score around length of jacket 1inch Peel jacket and remove m Separate outer braided shield and twist m For Standard ultrasound transducers the cable is a dual coaxial cable m For Nautilus ultrasound transducers the cable is a single coaxial cable Ue et m f present cut b
132. gic PAL Pin diode switches pre amplifier and demodulator Ultrasound envelope filters Ultrasound envelope detector Audio frequency doubler and filters Fetal movement bandpass filters Telemetry multiplexor converter Local voltage regulators Motor control latches ion Head control latches Status input buffers Printhead serial data link Processing Block System processor System flash memory System boot flash memory System RAM System address decoder PAL System battery RAM with real time clock Interface to Uterine Activity Module FECG UA Board Pressure differential 173 174 amplifier 4 V reference A D converter System Power Supply Pre regulators 5 V regulators 3 3 V regulators 7 5 V regulators 173 174 24 V regulators 11 V regulators 173 174 12 V input Figure 5 10 Main Board Block Diagram 5 18 170 Series Monitor 2000947 004 Revision C Theory of Operation Main Board Theory of Operation Processing Block The processing block consists of the processor system memory battery RAM with real time clock and address decoder PAL Figure 5 11 provides a block diagram of the processing block System Flash Memory System Boot Flash Memory System SDRAM Memory 512k x 32 standard 128k x 8 1M x 32 standard 512k x 32 optional Battery RAM with Real Time Clock 12 288 MHz Crystal 8k x 8 SH3 Processor System Control Address Decoder PAL A
133. hannels are being used Channel 1 completes a transmit receive cycle while Channel 2 is muted then Channel 2 completes a transmit receive cycle while Channel 1 is muted Programmable Array Logic PAL functions of the pulsed Doppler ultrasound circuit are controlled by a PAL U50 Integrated circuit U48 latches the transmit and demodulator signals to prevent race conditions and phase jitter caused by the PAL U50 Table 5 19 provides a summary of PAL outputs Figure 5 17 provides a block diagram of the ultrasound module 5 26 170 Series Monitor Revision C 2000947 004 Theory of Operation Main Board Theory of Operation Table 5 19 PAL Outputs Pin Number Signal Name Signal Description 1 TRANS BURST Operates the Ultrasound Transmitter 2 DET BURST1 Activates the Demodulator 18 575KC Synchronizes the Power Supplies 19 USMODE Signals the Processor that the US Channel is Active 21 PIN1 Selects Channel 1 Transducer 22 PIN2 Selects Channel 2 Transducer 42 CH2 Selects CH2 Track and Hold Circuit 43 CH1 Selects CH1 Track and Hold Circuit US Channel 1 Transmitter Isolation Transformer Input Pin 174 US Channel 2 Diode Switching gt Pre Amplifier Demodulator Envelope Detector CH2 to Data Bus Demultiplexor AGC Telemetry Main Env
134. his equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with these instructions may cause harmful interference with other devices in the vicinity Disruption or interference may be evidenced by erratic readings cessation of operation or incorrect functioning If this occurs the site of use should be surveyed to determine the source of this disruption and actions taken to eliminate the source The user is encouraged to try to correct the interference by one or more of the following measures Turn equipment in the vicinity off and on to isolate the offending equipment Reorient or relocate the other receiving device Increase the separation between the interfering equipment and this equipment If assistance 1s required contact your GE Service Representative 170 Series Monitor Revision C 2000947 004 Safety Equipment Symbols Equipment Symbols The following is a list of symbols used on products manufactured by GE Some symbols may not appear on your unit Table 1 2 Equipment Symbols A ATTENTION Consult accompanying documents TYPE B EQUIPMENT Type B equipment is 2 suitable for intentional external and internal R application to the patient excluding direct cardiac application TYPE BF EQUIPMENT Type BF equipment is suitable for intentional external and internal A application to the patient excluding direct cardiac application Type BF equipme
135. ibly assess the condition of the cable strain relief and the connector pins Connect the strain gauge to the UA input receptacle on the front panel of the monitor Verify the following on the monitor The UA value may read negative numbers indicating baseline pressure is off scale In this case the message BASELINE PRESSURE OFF SCALE prints on the strip chart paper After approximately 20 seconds the message IUP prints on the center margin of the strip chart paper Select the monitor s UA Reference button and verify the following on the monitor The UA value 15 0 mmHg The UA trend is a continuous line at 0 mmHg on the strip chart paper The message UA REF prints on the strip chart paper Apply gentle pressure on the strain gauge diaphragm and verify that the UA value and trend respond to the input Increasing force should produce an increasing value and vice versa Disconnect the strain gauge from the front panel of the monitor the following on the monitor The UA value is blank The UA trend stops plotting on the strip chart paper After approximately 20 seconds the message UA INOP prints on the strip chart paper 6 22 170 Series Monitor Revision C 2000947 004 Functional Checkout Procedure Pattern Memory Test Pattern Memory Test The pattern memory of the simulator can be used to test any of the following mode combinations of the monitor 9999999 FECG TOCO FECG IU
136. ical status of the fetus during labor The monitor does not replace observation and evaluation of the mother and fetus at regular intervals by a qualified care provider who will make diagnoses and decide on treatments or interventions Visual assessment of the monitor display and strip chart must be combined with knowledge of patient history and risk factors to properly care for the mother and fetus 170 Series Monitor Revision C 2000947 004 Safety Definitions of Terminology Definitions of Terminology Six types of special notices are used throughout this manual They are Danger Warning Caution Contraindication Important and Note The warnings and cautions in this Safety section relate to the equipment in general and apply to all aspects of the monitor Be sure to read the other chapters because there are additional warnings and cautions which relate to specific features of the monitor When grouped warnings and cautions are listed alphabetically and do not imply any order of importance Table 1 1 Definitions of Terminology Danger A DANGER notice indicates an imminently hazardous situation which if not avoided will result in death or serious injury Warning A WARNING indicates a potentially hazardous situation which if not avoided could result in death or serious injury Caution A CAUTION indicates a potentially hazardous situation which if not avoided may result in minor or m
137. input signal The ECG beep is heard from the rear panel speaker The FHR trend oscillates 15 BPM between 115 and 130 BPM on the top grid of the strip chart paper See Figure 6 2 Repeat step 10 for rate values of A22 and A27 The results should be the same except that the 1 value oscillates by either 22 or 27 BPM and the FHR trend is an oscillation of 22 or 27 BPM The top value is always at approximately 130 BPM Refer to Figure 6 2 Access the Service Setup Mode and enable ECG Artifact Elimination 170 Series Monitor Revision C 2000947 004 Functional Checkout Procedure FECG Test 13 14 15 16 17 18 Set the simulator s ECG Rate switch to the A15 position Verify the following on the monitor The FHRI value oscillates by 15 BPM The FHR heartbeat indicator C2 flashes for each input signal The ECG beep is heard from the rear panel speaker The recorder prints an oscillation of 15 BPM between 115 and 130 BPM on the top grid of the strip chart paper Figure 6 2 shows the strip chart paper results Repeat step 13 for the rate value of A22 The result should be the same as step 13 except that the FHRI value oscillates by 22 BPM and the trend is an oscillation of 22 BPM between the 108 and 130 BPM on the strip chart paper Set the simulator s ECG Rate switch to the A27 position Verify the following on the monitor The FHRI value oscillates by 27 BPM
138. int in the annotation area of the strip chart paper Turn off the monitor s recorder Set the switches on the Model 325 Input Simulator according to Table 6 7 Using the simulator s Manual Adjustment knob input an US signal of 179 BPM as indicated on the monitor Verify that there is no alarm tone sounding from the monitor s speaker Using the simulator s Manual Adjustment knob increase the US rate to 180 BPM Again verify that there 1s no alarm tone sounding from the monitor s speaker Using the simulator s Manual Adjustment knob increase the US rate to 181 BPM After five minutes verify the following on the monitor An alarm tone is emitted from the monitor s speaker alternating high low tones The Alarm indicator flashes The affected heart rate numerics flash Press the monitor s front panel Alarm Silence pushbutton and verify that the alarm tone silences but the visual indications remain present 6 28 170 Series Monitor Revision C 2000947 004 Functional Checkout Procedure Alarm Test Table 6 7 Alarm Test Simulator Settings Section Switch Setting US Main RATE Rate MANUAL Mode US General Pattern Memory OFF 16 17 18 19 20 21 22 23 24 25 Use the simulator s Manual Adjustment knob to decrease the US rate to 180 BPM Verify that the Alarm indicator goes out and the heart rate numerics stop flashing Us
139. ion Pressure Channel The input to the pressure channel is to resistors R9 and R10 with the signal names of PRESS and PRESS respectively Resistors R9 through R12 and capacitors C16 through C18 provide RF filtering and in conjunction with diode limiters D1 and D2 provide protection from electro static discharge Instrumentation amplifier U5 provides a gain of 248 which is given by 49 4E3 R13 1 The output of US which is inverting with respect to the signal PRESS drives the inverting amplifier U6 pin 1 This amplifier has a gain of 4 99 and rolls off at approximately 32 Hz The output of U6 pin 1 drives U6 pin 5 with a division of two formed by resistors R18 and R19 The operation of this amplifier is best understood if analyzed from its quiesent condition of no input signal Under this condition U6 pin 5 is at zero volts therefore U6 pin 6 must also be at zero volts This forces a quiesent current of 75 uA through R20 This current is produced by U6 pin 7 driving the LED that illuminates the photodiode at U10 pins 3 and 4 which is the feedback path The LED also illuminates the photodiode at U10 pins 5 and 6 which are on the non isolated side The current transfer ratio of this photodiode with respect to the photodiode on U10 pins 3 and 4 is 0 85 to 1 05 The tocotransducer and the IUP transducer have the transfer function of 5uV UA Unit Volt excitation Therefore since the excitation voltage is 4 V the input voltage is
140. ion C Parts Lists 2001972 038 Model 174 Final Assembly Table 11 4 Model 174 Final Assembly 2001972 038 Continued Find Num Item Number Item Description Qty 62 410097 TAPE SHIPPING 3IN WIDE 4 63 4281DA LABEL C UL HAZZARD TAG120 SERIES 1 64 4281EA ire NUMBER UL amp MODEL 1 65 408230 008 LABEL CE MARK 1 66 160019 SEALANT MED BLUE 0 67 2000741 001 LABEL TRANS amp STOR COND 170 SERIES 1 Revision C 170 Series Monitor 2000947 004 11 13 Parts Lists 2264AAX Button Style Nautilus Tocotranducer Assembly Parts List 5 ft cord 2264AAX Button Style Nautilus Tocotranducer Assembly Parts List 5 ft cord Table 11 5 2264AAX Button Style Nautilus Tocotransducer Assembly Parts List 5 ft cord Item Number Item Description Qty 1 14894A TOCO CBL ASSY OB 5 LG WATERTIGHT 1 4 15079AA MARKING CASE BUTTON TOP TOCO WATERTIGHT 1 6 14790 CASE BOTTOM ASSY OB WATERTIGHT 1 7 14594AA FLAT SEAL TOCO U S WATERTIGHT XDCR 1 8 14640 CABLE MOUNTING US WATERTIGHT 1 9 284106 SCR 4 40 PH 5 16L W SEAL PHIL SS LL 5 10 14638AA SCREW CAP WATERTIGHT 4 11 15254AA SCREW CAP FLAT MARING WATERTIGHT SCUCERS 1 12 7529DA KNOB TOCO KNOB TOP XDCR KIT116 1 13 281260 SCR SET 2 56 1 8L OVAL PT SS 1 17 8974AA ABD STRAP BUTTON STYLE BE LT 1 18 14855AA WARNING TAG CABLES WATERTIGHT 1 19 13658 LBL CE CAUTION IP68 WATERTIGHT XDCR 1 20 440011 LABEL 2 25X 75 SE
141. ire on the PC board 11 Install new flat seal o ring 12 Nautilus Tocotransducers only Prior to replacing the case top it is recommended that you calibrate the transducer Refer to Tocotransducer Calibration on page 7 20 prior to completing the cable replacement procedure 13 Follow the instructions for Nautilus Transducer Reassembly on page 7 32 170 Series Monitor Revision C 2000947 004 Serviceable Assemblies Removing the Monitor Top Cover Removing the Monitor Top Cover 1 Unplug the AC adapter from the monitor to completely remove power 2 Remove the four bottom panel screws CAUTION TOP COVER The top cover remains tethered to the main board via the display board and membrane switch panel cables Do not attempt to remove the monitor cover without first disconnecting these cables 3 Partially lift the top cover and slide it partways back to reveal the cables connecting to the main board 4 Disconnect the display board cable from J18 on the main board 5 Disconnect the membrane switch panel cable from J19 on the main board Revision C 170 Series Monitor 7 19 2000947 004 Serviceable Assemblies Tocotransducer Calibration Tocotransducer Calibration Any of the following three transducers can be used with the 170 Series Monitor Corometrics Nautilus Tocotransducer Corometrics Trimline Tocotransducer Corometrics Large Button Tocotransducer 475 Q
142. ision C 2000947 004 Theory of Operation Main Board Theory of Operation Power Supplies Integrated circuit U60 is a voltage comparator that senses that the power has been removed and inhibits battery RAM access and recorder printing when the supply drops to approximately 10 V Integrated circuit U58 forms an R S flip flop U58 pin 6 is set high when the Power button is pressed Q19 collector also goes to a logic 1 whenever the Power button is pressed When U58 pin 6 is pulled high it enables the SYNC signal at U59 pin 4 which is inverted by U59 pin 3 to reach all the switching power supplies The sync frequency is 575 kHz and is derived and hence synchronized to the ultrasound system U62 and its associated components comprise a buck converter with an output voltage of 5 8 V This is used as the pre regulator for linear regulators U65 U66 U68 and U69 U65 provides the system 5 V U66 provides the 5 V for the recorder motor U67 provides the 5 V for the audio amplifier U68 provides 43 3 V for the analog circuitry U69 provides the 3 3 V for the digital circuitry U61 and its associated components comprise a linear regulator with an output voltage of 7 5 V This is used as the pre regulator for the linear regulator U55 which provides the 6 V for the ultrasound front end it also powers U53 which provides the 6 V and powers U56 which is used to generate the 4 V for the tocotransducer circuitry U64 and its associated co
143. ists 2001972 038 Model 174 Final Assembly Table 11 4 Model 174 Final Assembly 2001972 038 Continued Find Num Item Number Item Description Qty 29 284105 SCREW 4 PH 1 4L THD FORM 7 30 284072 SCR 4 40 PH 5 16L PHL LL STRIP 33 31 284285 Et PASE 3 16 PHIL 2PS 4 32 289516 SCR M3X5 PH PHIL ZP W NYLOK PATCH 4 33 2000220 001 SCR PH 2 1 2L PHIL ZPS PLASTITE 2 34 2000221 001 SCR 4 PH 1 4L TYPE F PHIL ZPS 2 35 2001894 001 SPRING FRONT GROUND 173 1 36 15301 ASSY DISPLAY BOARD 1 37 15461 GASKET REAR PANEL 1 38 2004993 004 PAD PRINT TOP COVER MODEL 174 1 39 15323 KYBD MEMBRANE 052 1 40 15324DA nim DISPLAY OVERLAY FECG MODEL 1 41 14943AA CLIP SPEAKER ACCESS HOME MONITOR 2 42 2000178 001 PLUG CALL LIGHT 1 43 2000359 001 STANDOFF M F 440 1IN LG ALUM 1 44 2000246 001 PLUG TELEMETRY 1 45 2000952 001 PCB DUAL U S FECG 174 1 46 2003930 001 LABEL REAR PANEL 170 SERIES 1 47 284031 SCR 4 40 BH 1 4 LG SLTD N YLON 2 49 608030 CABLE MOUNT ADHESIVE BACK 2 50 608036 TYRAPS CABLE TIES 2 51 7714 12V 30W EXTERNAL 1 55 2000890 001 PACKAGING RIGHT CAP 170 SERIES 1 56 2000891 001 PACKAGING LEFT 170 SERIES 1 57 2000892 001 PACKAGING BOXES 170 SERIES 1 58 2000893 001 PACKAGING SLOTTED TRAY 170 SERIES 1 59 410010 PACKING LIST ENVELOPES 1 60 2000555 001 SHLD SPEAKER 170 1 61 410066 23 26 006 1 11 12 170 Series Monitor 2000947 004 Revis
144. itor If a modem is used this line should be tied to the CTS line of the modem m Receive Data RXD This input line provides the serial data sent from the external computer to the 170 Series Monitor Standard RS 232C Rules The following rules must be observed m When a direct connection is made between a 170 Series Monitor and another Data Terminal Equipment DTE a standard null modem cable must be used m When an indirect connection is made using a modem a 170 Series Monitor requires a normal modem cable Cable Distance The RS 232C Interface supplied with the 170 Series Monitor is capable of operating over varying distances depending upon the data rate used and whether the cabling is shielded or unshielded Refer to the manufacturer s specifications Data Terminal Equipment Cabling When the 170 Series Monitor 1s directly connected to another Data Terminal Equipment DTE device a standard null modem cable is required as shown in Figure 8 5 Data Communications Equipment Cabling When the 170 Series Monitor is connected to a Data Communications Equipment DCE device a modem a standard normal modem cable is required as shown in Figure 8 6 Revision C 170 Series Monitor 8 17 2000947 004 Peripheral Devices RS 232 Connectors Table 8 6 RS 232 Connector 1 Pin Number Signal Name Signal Description 1 5V 200 mA Fused 2 RTS Request to Send Output from Monitor 3 RXD Receive Data Input to
145. ker above the data marks the time of the reading and identifies the data source as an external device The following is an example annotation FSpO 47 In addition the FSpO data is trended on the bottom grid of the strip chart paper as beaded trace The trend uses a 0 100 scale Refer to Figure 8 1 FSp02 47 9 00 US US22 FSp02 3 100 SpO2 e 0 Figure 8 1 FSpO Data Example To connect the Model N 400 1 Using interface cable catalog number REF 1557AAO BAO connect one end to an available RS 232C port on the 170 Series Monitor connect the other end to the Serial Communications port on the pulse oximeter NOTE This cable can be used with both 120 2121is and 170 Series Monitors Although the 120 2120is uses 6 pin RJ 11 connectors and the 170 uses 8 pin RJ 45 connectors the latter is center keyed to account for this The 170 uses RJ 45 connectors to provide for future interface features 2 Access the monitor s service setup mode and set the baud rate to 2400 and the mode to ext FSpO then exit the service setup mode 8 8 170 Series Monitor Revision C 2000947 004 Peripheral Devices RS 232 Connectors Table 8 2 External Device Summary MEER Paame e 170 Series Mode dai e Cat Critikon Model 1846 1846SX NBP 600 ext BP oO i m Quantitative Sentinel System ge 1200 HP or HP w notes MERO i es Nellcor N 400 FSpO2 2
146. l station annotations on the fetal monitor strip chart whereas HP w notes does Select ext BP for connecting to a Critikon Model 1846 1846SX Blood Pressure Monitor 8 4 170 Series Monitor Revision C 2000947 004 Peripheral Devices RS 232 Connectors Ext FSpO Select ext FSpO for connecting to a Nellcor Fetal Pulse Oximeter Factory The FACTORY mode is reserved for factory testing only 115 Update Select for backward compatibility so the 170 Series Monitor can operate in a Model 115 compatible communication mode This mode outputs all available information and ignores requests from a host computer system 115 Transmit Receive Select for backward compatibility so the 170 Series Monitor can operate in a Model 115 compatible communication mode This mode only outputs data requested from a host computer system Revision C 170 Series Monitor 2000947 004 8 5 Peripheral Devices RS 232 Connectors Critikon Model 1846 1846SX Critikon Model 1846 1846SX Monitors can be interfaced to a 170 Series Monitor to provide a printout of NBP values on the strip chart paper 1 Refer to Table 8 2 for the appropriate interface cable Connect one end to an available RS 232C port 1 or 2 on the 170 Series Monitor connect the other end to the serial communications port on the blood pressure monitor Refer to the Critikon documentation for information on the name of the connector Access the fetal monitor service setu
147. lack coax and fillers flush with grey jacket m Solder 24 AWG green wire to outer shield m Score around white jacket leaving 3c inch se m Separate inner braided shield and twist m Solder 24 AWG green wire to inner shield m Apply shrink tubing over clear wire and solder joint of inner shield m Strip conductors 14 inch Twist and tin conductors m Solder contact pins to conductors and jumper wire Figure 7 2 Ultrasound Transducer Cable Preparation 7 8 170 Series Monitor 2000947 004 Revision C Serviceable Assemblies Transducer Plug Replacement Kits Table 7 4 Ultrasound Cable Wiring Pin Number Pin Length Description Wire Color 1 short 2 short 3 short Overall Shield 24 AWG Green 4 LONG US Transmit Receive Shield 24 AWG Green 5 short White Coax 6 short 7 short 8 short 9 short 10 short 11 short US Enable 24 AWG Green Jumper 12 short US Enable Ground 24 AWG Green Jumper Revision C 170 Series Monitor 2000947 004 7 9 Serviceable Assemblies Transducer Plug Replacement Kits FECG Cable Preparation Refer to Figure 7 3 and Table 7 5 while following these steps 1 2 10 11 12 13 14 Cut 26 AWG green wire not supplied to 2 inches long Strip one end 3 4 inch Cut 26 AWG blue wire not supplied to 1 inches lon
148. light rotation Secure the motor mount to the main board mounting plate Tighten both screws Replace and align the printhead by following the instructions on page 7 41 and page 7 43 Replace the main board and secure all eight mounting screws Re connect all cables Replace the monitor top cover The thermal printhead heater elements must be cleaned at regular intervals to remove any accumulated paper dust The heater elements may be cleaned with methanol or isopropyl alcohol Care must be taken to avoid touching the heater elements with bare hands CAUTION AIR DRY Allow to air dry completely prior to using the monitor 7 46 170 Series Monitor Revision C 2000947 004 Serviceable Assemblies Servicing the Recorder Replacing the Sensor Board Equipment Required Phillips screwdriver Sensor board part no 15231 Sensor board insulator part no 2000147 001 Cable tie x2 part no 608036 Cable mount adhesive back x2 part no 608030 Procedure 1 Remove the AC line cord from the monitor to completely remove power 2 Follow the instructions for Removing the Monitor Top Cover on page 7 19 3 Follow the instructions for Replacing the Main Board on page 7 35 4 Notethe location ofthe printhead assembly relative to the notches on each side This is the nominal location for when it is replaced later Remove the four screws from the printhead assembly downstop pl
149. logies 0459 gemedical com World Headquarters GE Medical Systems Information Technologies Inc 8200 West Tower Avenue Milwaukee WI 53223 USA Tel 1 414 355 5000 1 800 558 5120 US only Fax 1414 355 3790 European Representative GE Medical Systems Information Technologies GmbH Munzinger Strafe 3 5 D 79111 Freiburg Germany Tel 49 761 45 43 0 Fax 49 761 45 43 233 Asia Headquarters GE Medical Systems Information Technologies Asia GE China Co Ltd 24th Floor Shanghai MAXDO Center 8 Xing Yi Road Hong Qiao Development Zone Shanghai 200336 P R China Tel 86 21 5257 4650 Fax 86 21 5208 2008
150. m Width 16 75 in 42 5 cm Depth 10 0 in 25 4 cm Weight 8 Ibs 3 6 kg approx Environmental Conditions Operating Storage Monitor Ambient Temperature 50 F to 104 F 10 C to 40 C 14 F to 131 F 10 C to 55 C Relative Humidity 10 to 75 non condensing 10 to 90 non condensing Strip Chart Paper A Ambient Temperature 50 F to 104 F 10 C to 40 C lt 80 F lt 26 5 C Relative Humidity 30 to 70 non condensing 45 to 65 non condensing Certification AX UL 2601 1 Designed to meet UL 2601 1 Medical electrical equipment classified by Underwriter s Laboratories Inc with respect to fire shock and mechanical hazards in accordance with UL 2601 1 CUL Classified with respect to electric shock fire mechanical and other specified hazards only in accordance with CAN CSA C22 2 No 601 1 Paper operating environmental conditions are for a period of less than one month Paper storage environmental conditions are for extended storage 10 2 170 Series Monitor Revision C 2000947 004 Specifications Operating Modes Operating Modes Table 10 2 Operating Mode Specifications FECG Mode Technique Heart Rate Counting Range Heart Rate Resolution Artifact Elimination Countable Input Signal Range Offset Voltage Tolerance Differential Maximum Common Mode Voltage Preamplifier Bandwidth Common Mode Rejection Balanced Unbalanced 5kQ RA or LA Input Equivalent Noise Input
151. mal array printer The recorder prints continuous trends and alphanumeric data on one strip chart Automatic mode selection is provided simply by inserting the appropriate transducer plug into the front panel receptacle Wide beam ultrasound transducer provides an advanced level of system performance Transducer connectors are easy to use color coded and durable Frequently used functions are controlled by front panel buttons including audio volume uterine activity reference alarm silence event mark paper advance and user setup controls The ultrasound mode provides clean accurate traces with few dropouts because of a patented autocorrelation processing Fetal heart rate alarm limits are user defined with pre set defaults Alarm silencing is controlled by a front panel pushbutton colored for easy recognition Fetal heart rate alarm conditions have both audible and visual indications The audible indicator can be silenced on an alarm by alarm basis Two RS 232C ports provide interfacing to external devices 2 4 170 Series Monitor Revision C 2000947 004 Introduction About Your Monitor About Your Monitor Model 171 Model 172 Model 173 Model 174 This manual describes all monitors in the 170 Series therefore some sections may not apply to your model monitor Refer to Table 2 1 The Model 171 Antepartum Fetal Monitor provides singleton ultrasound and external uterine activity monitoring
152. mary FHR Display 20 ECG artifact elimination 173 174 only 0 off 1 on 21 heartbeat coincidence 172 173 174 only 0 off 1 on 22 fetal movement enable disable 1 on if 0 English 1 Spanish 2 German 23 language an juu 4 5 Italian 6 Swedish 7 Dutch 8 Portuguese 9 Chinese 24 chart speed 1 1 2 2 3 3 cm min 25 paper scale 0 30 240 1 50 210 BPM 0 HP 1 HP w notes 30 40 communications mode port 1 2 2 ext BP 3 factory test 4 ext F5pO 5 115 update 6 115 transmit receive 31 41 baud rate port 1 2 A 50 remote mark annotation style 0 FM 1 arrow 51 future use Japanese units only 0 off 1 on 52 fetal heart rate offset enable disable 0 off 1 10 minute auto revert 2 on 53 UA reference default 5 10 15 20 25 relative units 100 recorder alignment 0 255 Revision C 170 Series Monitor 4 15 2000947 004 Setup Procedures Customizing the Monitor Table 4 4 Summary of Factory Defaults Setup Option Factory Default Hospital Clinic Setting FHR Alarms on FHR High Alarm Limit 160 BPM FHR Low Alarm Limit 120 BPM FHR Alarm Volume 5 Eastern Standard Time or Daylight Time Date Saving Time whichever is applicable ECG Artifact Elimination off Models 173 and 174 only Heartbeat Coincidence off Models 172 173 and 174 only Fetal Movement Detection if purchased and installed Langu
153. mately 4 5 mA to flow in the LED of opto coupler U17 The current transfer function of the coupler is 1996 typically which causes 860 uA to flow in the photo transistor of U17 in turn causing P16 pin 6 to be pulled to ground on the non floating side of the barrier It is then sensed by the system microprocessor In summary the US1 enable isolated one channel of US from the Main Board along with a mode enable from the FECG IUP Board Revision C 170 Series Monitor 5 39 2000947 004 Theory of Operation FECG IUP Board Theory of Operation To Main Board Front End To Main Board A D FECG IUP Connector Converter for Processing Isolated Side Unisolated Side Connector Connector RA FECG Low Noise Differential Amplifier with Optical Protection Circuitry Isolation and Gain RL Drive Circuitry Stages High Pass Filter PRESS Pressure Differential Gain and Offset Optical Amplifier with Adjustments PRESS Protection Circuitry Filtering Stages 4 V Reference IUP Detection Circuitry To TOCO Enable FECGEN eel Model Line Optical EL Isolation for FECG TOCOEN IUP US1 174 only TON and TOCO US1EN 174 only US1EN 174 only 12 V 173 11 6 V 174 144 KHz 173 only Isolated Power Isolated Supply P ee q Supplies 144 KHz Q Q Power Supply Control PAL CEEAR 174 Only Figure 5 22 FECG IUP Board
154. mplifier Diodes D23 and D24 are biased off providing a high impedance path to the ultrasound transmitter and preamplifier for the Channel 2 transducer The opposite of the above is true when the Channel 2 transducer is activated Integrated circuits U53 U54 and U55 are voltage regulators used to provide stable low noise power supplies for the ultrasound receiver and transmitter Transistor Q11 inductor L1 and capacitor C208 form the ultrasound transmitter Q11 is driven by the signal TRANS BURST Inductor L2 and capacitors C209 C210 and provide tuning for the transmitter output The transmitter has a nominal output impedance of 30 and can typically drive 4 V peak to peak into a 20 Q load Transistors Q12 Q13 and Q14 and associated components form the preamplifier Capacitors C213 C215 C229 and C216 provide power supply rejection for the preamplifier Inductor L3 along with capacitors C211 and C212 form a series resonant tank circuit This tank circuit provides a low impedance path for the received signals from the transducer and a voltage gain of approximately 28 dB The typical input impedance to this tank circuit is 30 Os Transistors Q12 and Q13 form a cascode amplifier Transistor Q13 15 a dual n channel field effect transistor connected in parallel This parallel connection provides an improvement of 3 dB in signal to noise ratio due to the gain doubling and the noise adding in quadrature Inductor L4 and capacitor
155. mponents comprise a boost converter with an output voltage of 24 V Integrated circuit U70 under microprocessor control is used to control the 24 V for the recorder printhead The 24 V output is current limited by Q20 Q21 and associated components The power output is limited to 17 W Figure 5 20 provides a block diagram of the power supply section Revision C 170 Series Monitor 5 33 2000947 004 Theory of Operation Main Board Theory of Operation Power Status Comparator 5 V Linear Regulator for Audio 5 V Linear Regulator for Motor 5 V Linear Regulator for Digital Logic Switching Pre Regulator 3 3 V Linear Regulator for Digital Logic 3 3 V Linear Regulator for Analog Circuitry 7 5 V Linear Pre Regulator Switching Regulator for Recorder 24V Shutdown digital control Sync input from ultrasound timing Low Power 3 3 V Regulator from Power Switch Switching Regulator Shutdown Power Off Control Power Switch Flip Flop Figure 5 20 Power Supply Section Block Diagram 5 34 170 Series Monitor 2000947 004 Revision C Theory of Operation Main Board Theory of Operation FECG IUP Board Interface 116 and J15 provide the interface to the FECG IUP Board J15 is patient isolated FECG Connector to Data B 12 BitAjp 9 8a Pus Converter Pressure FECG IUP Connector 4V REF Board Telemetry Telemetry Telemetry Switch Telemetry FECG In
156. n transmitted from the 170 Series Monitor to the external computer is shown in Figure 8 3 NOTE This applies to both 115 Update mode and 115 Transmit Receive mode The definitions of the bytes are as follows Monitor Type This field contains a 1 byte ASCII value indicating the type of monitor sending the information The 170 Series Monitor is set to a fixed value of 9 39H Response Type This 1 byte value indicates the type of information being sent from the 170 Series Monitor as shown in Table 8 3 Monitor ID This 1 byte ASCII value indicates the ID number of the monitor information The 170 Series Monitor sets this byte to a fixed value of 0 30H Data Field This field of n bytes contains the actual data sent from the monitor to the external computer The contents of this field for each response is given below m Event Mark This data field is empty whenever the monitor s Mark button is selected m Heart Rate This data field contains two or three ASCII characters representing the value of the heart rate A value of 00 30H 30H indicates a penlift condition Heart rate data including penlift data is transmitted four times per second m Uterine Activity This data field contains two or three ASCII characters representing the value of uterine activity A value of 128 31H 32H 38H indicates a penlift condition Uterine activity data including penlift data is transmitted eight times per second m Modes This data fiel
157. nt has an F type applied part TYPE CF EQUIPMENT Type CF equipment is suitable for intentional external and internal Kd application to the patient including direct cardiac application Type CF equipment has an F type applied part ALTERNATING CURRENT AC EQUIPOTENTIALITY ON STANDBY button toggles between full power and standby CAUTION AC MAINS The On Standby switch does not disconnect the monitor from AC mains power To completely remove power you must disconnect the power cord from the AC wall outlet Revision C 170 Series Monitor 1 9 2000947 004 Safety Equipment Symbols For your notes 1 10 170 Series Monitor Revision C 2000947 004 Introduction This section lists the indications for use for monitors in the 170 Series as well as provides an explanation of the different patient monitoring modalities This section summarizes the clinical applications of monitors in the 170 Series Indications for Use ic secl a eee be ea PER 2 2 Monitoring Methods 52 SERIO ER Pes 2 3 Ee CTK 2 4 About Your MONIO eta edd ee E e e ER dl ets 2 5 Revision C 170 Series Monitor 2000947 004 2 1 Introduction Indications for Use Indications for Use Models 171 and 172 Models 173 and 174 Models 171 and 172 Fetal Monitors are indicated for use in the m
158. nt to line leakage for the following conditions Table 9 7 Patient to Line Leakage Conditions for TOCO Neutral Ground Power Polarity Closed Closed Normal Closed Closed Reversed Open Closed Normal Open Closed Reversed 9 14 170 Series Monitor Revision C 2000947 004 Maintenance Preventative Maintenance Inspection Patient to Ground Leakage for IUP 1 Connect an IUP test body to the monitor s front panel UA input 2 Configure a leakage tester to perform a patient leakage test 3 Turn ON the monitor using the monitor s On Standby button 4 Verify the following O 504A 132 253 VAC or at the line voltage at your facility 10 5 Record the patient to ground leakage for the following conditions Table 9 8 Patient to Ground Leakage Conditions for IUP Neutral Ground Power Polarity Closed Closed Normal Closed Open Normal Closed Open Reversed Closed Closed Reversed Open Closed Normal Open Closed Reversed Revision C 170 Series Monitor 9 15 2000947 004 Maintenance Preventative Maintenance Inspection Patient to Line Leakage for IUP 1 Connect an IUP test body to the monitor s front panel UA input 2 Configure a leakage tester to perform a line leakage test 3 Turn ON the monitor using the monitor s On Standby button 4 Verify the following 504A 132 253 VAC or at the line voltage at your facility 10 5 Rec
159. o Signal Description Main board 1 NC No Connection 2 MISCOL Input Paper Misload Sensor Collector 3 MISLED Output Paper Misload Sensor LED Voltage 4 GND Output Ground for Sensor 5 No Connection 6 OUTCOL Input Paper Out Sensor Collector 7 OUTLED Output Paper Out Sensor LED Voltage 8 GND Output Ground for Sensor 9 DOOR Input Door Switch Input 10 GND Output Ground for Door Switch Revision C 170 Series Monitor 5 5 2000947 004 Theory of Operation Functional Overview Table 5 5 RS 232 Connector 1 Pin Number Signal Name Signal Description 1 5V 200 mA Fused 2 RTS Request to Send Output from Monitor 3 RXD Receive Data Input to Monitor 4 GND Signal Ground 5 GND Signal Ground 6 TXD Transmit Data Output from Monitor 7 CTS Clear to Send Input to Monitor 8 5V 200 mA Fused Table 5 6 RS 232 Connector 2 Pin Number Signal Name Signal Description 1 GND Signal Ground 2 RTS Request to Send Output from Monitor 3 RXD Receive Data Input to Monitor 4 GND Signal Ground 5 GND Signal Ground 6 TXD Transmit Data Output from Monitor 7 CTS Clear to Send Input to Monitor 8 GND Signal Ground 1 8 234567 Figure 5 3 RJ 45 Connector facing the rear panel from the outside 5 6 170 Series Monitor 2000947 004 Revision C Theory of Operation Functional Overview Table 5 7 Speaker Connector Pin Numb
160. o the simulator s Fetal Monitor connector 5 Connect the sub cables of the other end of the simulator interconnect cable into the color coded connectors on the monitor adapter US and UA as required by the procedure 6 Turn on the Model 325 Simulator Verify that the green Power indicator illuminates 7 Turn on the 170 Series Monitor 6 6 170 Series Monitor Revision C 2000947 004 Functional Checkout Procedure FECG Test FECG Test This portion of the functional checkout procedure ensures the integrity ofthe FECG circuitry and the heart rate channel of the recorder 1 Connect the Model 325 Simulator s ECG sub cable to the FECG receptacle on the monitor Set the switches on the Model 325 Input Simulator according to Table 6 2 If not already on press the monitor s Record button Turn the simulator s Manual Adjustment knob fully counterclockwise and verify the following on the monitor The 1 value is 30 BPM The FHRI heartbeat indicator KV flashes at a rate of 30 times per minute The ECG beep volume of the rear panel speaker can be increased or decreased using the Volume buttons Set the volume to the desired level The recorder prints a continuous line at 30 BPM on the top grid of the strip chart paper The recorder prints the message FECG on the center margin of the strip chart paper after approximately 20 seconds Turn the simulator s Manual Adjustment knob to input an FECG signal of
161. oderate injury Cautions are also used to avoid damage to equipment Contraindication A CONTRAINDICATION describes any special symptom or circumstance that renders the use of a remedy or the carrying out of a procedure inadvisable usually because of a risk An IMPORTANT notice indicates an emphasized Important note It is something you should be particularly aware of something not readily apparent A NOTE indicates a particular point of information Note something on which to focus your attention Revision C 170 Series Monitor 2000947 004 1 3 Safety Monitor Contraindications Warnings and Precautions Monitor Contraindications Warnings and Precautions Warnings WARNINGS ACCIDENTAL SPILLS In the event that fluids are accidentally spilled on the monitor take the monitor out of operation and inspect for damage APPLICATION This monitor is not designed for direct cardiac connection CONDUCTIVE CONNECTIONS Avoid making any conductive connections to applied parts patient connection which are likely to degrade safety CONDUCTIVE PARTS Ensure that the conductive parts of the lead electrodes and associated connectors do not contact other conductive parts including earth DEFIBRILLATION During defibrillation all personnel must avoid contact with the patient and monitor to avoid a dangerous shock hazard In addition proper placement of the paddles in relation to th
162. of Operation Functional Overview Table 5 2 Recorder Printhead Connector Signal Type Pin Number Signal Name Relative To Recorder Signal Description Board 1 24V Input 24 Volts for Recorder 2 24V Input 24 Volts for Recorder 3 24V Input 24 Volts for Recorder 4 24V Input 24 Volts for Recorder 5 HGND Input Ground for 24V HGND Input Ground for 24V 7 HGND Input Ground for 24v 8 HGND Input Ground for 24V 9 HGND Input Ground for 24V 10 5v Input 5V for Logic 11 NC No Connection 12 NC No Connection 13 STBO Input Head Strobe 0 14 STB1 Input Head Strobe 1 15 STB2 Input Head Strobe 2 16 STB3 Input Head Strobe 3 17 BSCK Input Head Serial Clock 3 07 MHz 18 LD Input Head Load Line 19 PDATA Input Head Serial Data 20 NC No Connection Active low 170 Series Monitor Revision C 2000947 004 Theory of Operation Functional Overview Table 5 3 Recorder Motor Connector Signal Type Pin Number Signal Name Relative to Signal Description Main board 1 NC No Connection 2 P3 Output Motor Phase 3 3 P4 Output Motor Phase 4 4 5VM Output 5 Volts for Motor 5 NC No Connection P2 Output Motor Phase 2 7 P1 Output Motor Phase 1 8 5VM Output 5 Volts for Motor Table 5 4 Recorder Sensor Connector Signal Type Pin Number Signal Name Relative t
163. on hold the blue Power button release both buttons press and Use the Volume buttons If A or 7 to change the number in the UA display to 100 On Model 172 Monitors use the left set of volume controls Press the UA Reference button to activate the FHR display and start printing the test pattern See Figure 7 14 Follow the instructions under Left Right Alignment and Front Back Alignment 7 Press the Setup button gg to exit the service setup mode The monitor automatically turns to standby Follow the instructions for Adjusting the Printhead Current on page 7 42 Print the recorder test pattern See Printing a Continuous Test Pattern above Load paper and close the recorder drawer Observe the printing quality under the following conditions Press and hold the door toward the rear of the monitor If the printing darkens on either side loosen the four mounting screws move the printhead forward slightly on the affected side then re tighten the screws Pull and hold the drawer forward slightly If the printing darkens on either side loosen the fours mounting screws move the printhead back slightly on the affected side then re tighten the screws Verify that the print quality is satisfactory when the drawer is latched in place Revision C 170 Series Monitor 7 43 2000947 004 Serviceable Assemblies Servicing the Recorder 4305BAO 579 15 2 Ti
164. on to a Corometrics Model 146 Fetal Acoustic Stimulator Remote Mark Remote Event Marker 1 This receptacle is provided for connection to an optional Corometrics Remote Event Marker A Corometrics Remote Event Marker is used to annotate the strip chart recorder paper with a mark The printed mark can be configured as f commonly used to record an event or it can be configured as 1 commonly used as an indication that the mother has perceived fetal movement The monitor is factory set with the mark configured as 1 Refer to Customizing the Monitor on page 4 10 for more information on selecting the mark Refer to the instructions accompanying the Remote Event Marker for more information about using the accessory 8 2 170 Series Monitor Revision C 2000947 004 Peripheral Devices Telemetry Connector Telemetry Connector This connector is for future interfacing to the receiver of a Corometrics Model 340 Telemetry System NOTE The monitor receiver and transmitter must all be turned on NOTE When any telemetry mode is detected US or all equivalent front panel modes US US2 or TOCO are ignored You cannot mix and match telemetry and monitor modes The telemetry connected annotation K is printed on the bottom line of the top grid of the strip chart paper upon commencement of telemetry monitoring and every 30 minutes along with the modes The telemetry disconnected annotation
165. onents R409 C226 and buffer amplifier 046 pinl The track and hold circuits retain the amplitude of the last value from the previous demodulator activation If this method were not employed the system gain would have to be twice as high since it is a time sampled system The samples must be integrated over time averaged to produce the desired output In summary this method improves the signal to noise ratio of the system Since the DET signal is driven at the same frequency as the transmitted signal any return signal of the same frequency will be averaged and produce either 0 V or a dc offset at the output of the demodulator this is not seen by the main filter driven by the demodulator since it is AC coupled by capacitors C253 and C262 Therefore a difference frequency Doppler shift frequency must be present to produce an output from the demodulator The output of the track and hold circuit of Channel 1 at U46 pin 7 1s switched to the Channel 1 main filter through U39 pin 11 to U39 pins 6 and 10 Telemetry if present is switched to the Channel 1 main filter through U39 pin 7 to U39 pins 6 and 10 Telemetry FECG if present is switched by U39 pin 3 to U39 pins 2 and 15 to the analog to digital converter The main filter is a band pass amplifier Its 3 dB points are 120 Hz and 300 Hz respectively The bandwidth slopes are greater than 40 dB octave The maximum gain of the filter is 46 dB with peaking of approximately 48 dB
166. onitoring of the fetus during the antepartum period as well as throughout labor and delivery Each monitor also has an optional monitoring mode to detect fetal body movements Models 173 and 174 Fetal Monitors are indicated for use in the monitoring of the fetus throughout labor and delivery Each monitor also has an optional monitoring mode to detect fetal body movements 2 2 170 Series Monitor Revision C 2000947 004 Introduction Monitoring Methods Monitoring Methods The following is a summary of all the clinical monitoring methods found in the 170 Series Fetal Heart Rate External Method Pulsed Doppler Ultrasound Ultrasound monitoring is available on all 170 Series Monitors Models 171 and 173 provide a single ultrasound channel while Models 172 and 174 provide two ultrasound channels Fetal heart rate can be measured externally using pulsed Doppler Ultrasound A transducer placed on the mother s abdomen is used to direct an ultrasonic beam toward the fetal heart and to sense Doppler shifted echoes created by moving cardiac structures A patented autocorrelation process is used to determine the timing of successive cardiac cycles The resulting fetal heart rate FHR pattern 1s recorded on the strip chart paper and the FHR appears on the digital display Internal Method Direct Fetal Electrocardiogram FECG FECG is available on Models 173 and 174 only The Model 173 provides a dedicated FECG connector The Model 174
167. ord the patient to line leakage for the following conditions Table 9 9 Patient to Line Leakage Conditions for IUP Neutral Ground Power Polarity Closed Closed Normal Closed Closed Reversed Open Closed Normal Open Closed Reversed 9 16 170 Series Monitor Revision C 2000947 004 Maintenance Preventative Maintenance Inspection Patient to Ground Leakage for FECG 1 Connect an FECG test body to the monitor s front panel FECG input 2 Configure a leakage tester to perform a patient leakage test 3 Turn ON the monitor using the monitor s On Standby button 4 Verify the following 504A 132 253 VAC or at the line voltage at your facility 10 5 Record the patient to ground leakage for the following conditions Table 9 10 Patient to Ground Leakage Conditions for FECG Neutral Ground Power Polarity Closed Closed Normal Closed Open Normal Closed Open Reversed Closed Closed Reversed Open Closed Normal Open Closed Reversed Revision C 170 Series Monitor 9 17 2000947 004 Maintenance Preventative Maintenance Inspection Patient to Line Leakage for FECG 1 Connect a tocotransducer test body to the monitor s front panel FECG input 2 Configure a leakage tester to perform a line leakage test 3 Turn ON the monitor using the monitor s On Standby button 4 Verify the following lt 50uA 132 253 VAC or at the line volt
168. p Procedures Quick Reference Card Quick Reference Card Your monitor was shipped with a Quick Reference Card in the appropriate language The front side lists the user setup codes while the reverse lists the service setup codes The card is laminated and comes with hook and loop adhesives to attach to your monitor A copy of this card is included on the following page if you wish to make additional copies for training Additional Quick Reference Cards can be purchased by calling one of the numbers listed in the front of this manual Table 4 5 provides a summary of the Quick Reference Card re order numbers Table 4 5 170 Series Quick Reference Card Language Document Part Number English 2003024 001 Chinese 2003024 002 Dutch 2003024 003 French 2003024 004 German 2003024 005 Italian 2003024 006 Japanese 2003024 007 Portuguese 2003024 008 Spanish 2003024 009 Swedish 2003024 010 Polish 2003024 011 Greek 2003024 013 Russian 2003024 014 Czechoslovakian 2003024 015 4 18 170 Series Monitor Revision C 2000947 004 Setup Procedures Quick Reference Card COROMETRICS QUICK REFERENCE 170 SERIES 55 INDICATORS CONNECTORS BUTTONS Alarms Disabled Ultrasound Setup On Standby R 9 de Alarm Active FECG Volume Increase Decrease Record A A KAY B Fetal Heart Rate Uterine Activity Uterine Activity Reference Paper Advance Q E ib FECG units ny v UP includ
169. p mode and set the baud rate and mode for the appropriate port to 600 and ext BP respectively then exit the service setup mode Be aware of the following information specific to Critikon monitors The clock on the Critikon Modes 1846 1846S X Monitors must be set to within 10 minutes of the 170 Series Monitor If the clocks are not within 10 minutes of each other the time will print with each blood pressure reading Dueto the storage capabilities of Critikon monitors it is recommended that power be cycled at the beginning of each data session This ensures that any previously stored data is cleared When using STAT mode on a Critikon monitor the 170 Series Monitor does not print the time with each reading due to overcrowding on the strip chart Instead the time is printed once every three to five minutes The Critikon Model 1846SX discards NBP values after 90 minutes 8 6 170 Series Monitor Revision C 2000947 004 Peripheral Devices RS 232 Connectors Quantitative Sentinel Perinatal System Through this interface the 170 Series Monitor outputs FHR and UA data to a central information such as GE s Quantitative Sentinel Perinatal System Annotations made at the central station can be optionally printed on the strip chart paper of the 170 Series Monitor as summarized below Each message is preceded by a computer icon B Messages are restricted to a maximum length of 50 characters Lower case letters are con
170. provides a combi connector which can be used for either FECG or US FECG signals are obtained via a spiral electrode attached to the fetal presenting part FHR is computed on a beat to beat basis using the R to R time interval of the QRS complexes The instantaneous FHR pattern is printed on the strip chart paper and the FHR appears on the digital display Maternal Uterine Activity External Method Tocotransducer TOCO Maternal uterine activity is measured externally using a tocotransducer toco Relative pressure within the uterus is measured using a tocotransducer attached to the mother s abdomen in the area of the uterine fundus The readings are plotted on the strip chart paper in a relative scale from 0 to 100 as well as shown on the digital display All 170 Series Monitors provide external uterine activity monitoring Internal Method Intrauterine Pressure Catheter and Strain Gauge IUP IUP is available on Models 173 and 174 only Intrauterine pressure is measured using a transcervical catheter The pressure trend is plotted over the range of 0 to 100 mmHg and the readings appear on the digital display Revision C 170 Series Monitor 2 3 2000947 004 Introduction Features Features The 170 Series is a family of fetal monitors offering various combinations of modalities to suit your institution s needs Each monitor boasts the following qualities The strip chart recorder is a quiet easy to load high resolution ther
171. ption Qty 1 2000281 001 ENCL BOTTOM SHIELDED 170 SERIES 1 2 15451AA COVER SPEAKER 1 3 140173 FOOT RUBBER 50D 26H 4 4 15222AA BRG DRAWER 2 5 15212AA PIN BEARING 170 2 6 15200A ASSY ROLLER 1 T 250096 BEARING FLANGED 187 BORE 2 8 11717AA ROLLER GEAR 120REC 1 9 15207 ASSY DRAWER WELDED 1 10 15224AA SPACER DRAWER 1 11 15223AA PLASTIC 9 CM PARTITION 1 12 15231 ASSY PCB SENSOR BOARD 1 13 2000147 001 SENSOR INSULATOR 170 SERIES 1 14 250099 SPRING COMPRESSION 24 OD 38L 1 15 2000222 001 SPRING CPRSN 3 OD 022WIRE SS 2 16 15136A MOTOR STEPPER ASSY 1 17 15202AA MOUNT MOTOR 1 18 15201AA PLATE PC MOUNTING 1 19 2000133 001 PRINTHEAD 8 DOTS MM 216MM WIDE 1 20 15203AA PLATE HEAD MOUNTING 1 21 2000223 001 ERE 56L 240 OD 2 22 15204 BRACKET HEADSTOP 1 23 280201 STANDOFF 1 4HEX 1 8SL 4 4 0 THD 2 24 281501 NUT HEX 4 40 5 64 X 1 4 2 25 2000234 001 RIBBON RECORDER 1 26 2000235 001 CENE SPER IRE 1 27 2000146 001 CLIP GROUND 2 170 Series Monitor 2000947 004 Revision C Parts Lists 2000268 188 Model 171 Final Assembly Table 11 1 Model 171 Final Assembly 200268 188 Continued Nur Part Number Description Qty 28 2000243 004 1 29 284105 SCREW 4 1 41 THD FORM 30 284072 SCR 4 40 5 16L PHL LL STRIP 29 E XUL 289518 8 33 2000220 001 SCRPH 2 1 21 PHIL ZPS PLASTITE 2 34 2000221 001 SCR 4 PH 1 4L TYPE F PHIL ZPS 4 35 2000142 001 SPRING FRONT GROUND 1 36
172. r Wire 24 AWG Green Wire Figure 7 1 Tocotransducer Cable Preparation Table 7 3 Tocotransducer Cable Wiring Pin Number Pin Length Description Wire Color 1 short PRESS Red 2 short PRESS White 3 short 4 short 4V Blue 5 short 6 short Reference Enable 24 AWG Green Jumper and Yellow 7 LONG Shield Ground 24 AWG Green 8 short 9 short 10 short 11 short 12 short TOCO Enable 24 AWG Green Jumper 7 6 170 Series Monitor 2000947 004 Revision C Serviceable Assemblies Transducer Plug Replacement Kits Ultrasound Transducer Cable Preparation Refer to Figure 7 2 and Table 7 4 while following these steps l 10 11 12 13 14 15 16 Cut 424 AWG green wire not supplied to 1 16 inches long and strip each end inch This will be used as a jumper wire Cut 24 AWG green wire to 4 inches long and strip each end inch Route the transducer cable through the gripper Slide the gripper followed by the retaining ring down the cable until they are out of the way Score around grey jacket of cable 1 inch Peel and remove jacket Pull back the outer braided shield and twist into pigtail Solder the 4 inch prepared green wire to the outer shield wrapping the 34 inch strip onto shield Cut wire flush with other conductor s of cable Retain remaining piece of wire for inner shield This step varies accordin
173. r signal quality alarms the indicator flashes during an active alarm and turns off as soon as the condition is resolved The indicator is unaffected by silencing the audio alarm Revision C 170 Series Monitor 3 7 2000947 004 Controls Indicators and Connectors Front Panel Connectors Front Panel Connectors Model 171 Connectors Figure 3 2 Model 171 Connectors Qi Ultrasound Connector The ultrasound connector is a blue round receptacle mechanically keyed to accept only a Corometrics ultrasound transducer plug The fetal heart rate derived from this transducer shows in the fetal heart rate display Uterine Activity Connector The uterine activity connector is a white round receptacle mechanically keyed to accept a Corometrics tocotransducer The uterine activity value obtained from this transducer shows in the uterine activity display l If the Model 171 is interfaced to a clinical information system CIS be aware that the CIS may be designed to alarm when there is no fetal heart rate signal Therefore it is recommended that you unplug the ultrasound transducer from the monitor when not in use to eliminate false alarms 3 8 170 Series Monitor Revision C 2000947 004 Controls Indicators and Connectors Front Panel Connectors Model 172 Connectors Figure 3 3 Model 172 Connectors 19 Primary Ultrasound Connector The primary ultrasound connector is a blue round receptacle mechanically ke
174. riving the LED that illuminates the photodiode at U11 pins 3 and 4 which is the feedback path The LED also illuminates the photodiode at U11 pins 5 and 6 which are on the un isolated side The current transfer ratio of this photodiode with respect to the photodiode on U11 pins 3 and 4 is 0 85 to 1 05 The input voltage required to drive U8 pin 1 to either of its power supply limits is approximately 1 44 mV peak This corresponds to approximately 5 V at U8 pin 1 for 0 72 mV input and 4 55 V at U8 pin 5 This causes a delta current of 34 2 uA through R69 which is also transferred across the barrier with the same transfer ratio of 0 85 to 1 05 This current is input to U15 pin 3 with resistor R75 being the load resistor that produces a voltage proportional to the current transferred to it Amplifier U15 pin 7 produces an offset voltage of 1 97 V The quiesent current of 75 uA flowing through R75 will produce a voltage of approximately 1 25 V at U15 pin 3 A 0 72 mV signal peak to peak at the input will produce approximately 1 26 V at U15 1 Thus 1 44 mV at the input will produce 2 52 V at U15 pin 8 Amplifier U15 pin 14 is a non inverting amplifier with a gain of one It also provides 3 sections of high pass filtering at 25 Hz Amplifier U15 pin 8 is a non inverting amplifier with a gain of one It also provides 3 sections of low pass filtering at 90 Hz The FECG enable ties resistor R87 to the floating ground
175. rmation Technologies as repairable Refer to the service manual for further information A CAUTION In the United States of America Federal Law restricts this device to sale by or on the order of a physician Corometrics and Marquette are registered trademarks of GE Medical Systems Information Technologies GE is a registered trademark of General Electric Company All other product and brand names are trademarks or registered trademarks of their respective companies 2002 2004 GE Medical Systems Information Technologies All rights reserved No part of this manual may be reproduced without the permission of GE Medical Systems Information Technologies Contents Safety e A 1 1 General 1 1 2 Definitions of Terminology 1 3 Monitor Contraindications Warnings and Precautions 1 4 Equipment Symbols 1 9 INWOGUCHON me Er 2 1 Indications for Use ec nem etn 2 2 Monitoring 2 3 Features iscing Ur aaa Wade ata Aine 2 4 About Your Monitor nh 2 5 Controls Indicators and Connectors 3 1 Front Panel Controls nnn 3 2 Front Panel Displays and Indicators 3 6 Front Panel
176. rn the printhead assembly to its original position as noted in step 4 21 Replace the main board re connect all cables and replace the monitor top cover 22 Check printing and re align the printhead as necessary See Aligning the Printhead on page 7 43 7 48 170 Series Monitor Revision C 2000947 004 Serviceable Assemblies Boot ROM Error Codes Boot ROM Error Codes If the error codes in the following table display during the boot process cycle power If the error codes reappear when you power up phone GE Technical Support for assistance Table 7 15 Boot ROM Error Codes Error Code Description E1 Configuration data incorrect for program target E2 Configuration data checksum error E3 Boot code CRC error Revision C 170 Series Monitor 7 49 2000947 004 Serviceable Assemblies Boot ROM Error Codes For your notes 7 50 170 Series Monitor Revision C 2000947 004 Peripheral Devices The 170 Series Monitor allows connection to optional peripheral equipment This section discusses the following Remote Marks Connectors s poresper 9 o d er EE 8 2 Telemetry Connector eios euer esto hr c ec pen td 8 3 RS232 Cole Clore peri eee ettet quet 8 4 Revision C 170 Series Monitor 2000947 004 8 1 Peripheral Devices Remote Marks Connectors Remote Marks Connectors Remote Mark Fetal Acoustic Stimulator This receptacle is provided for connecti
177. ructions carefully PAPER TYPE Do not use non Corometrics paper or paper designed for use with other Corometrics monitors Using paper other than catalog number REF 4305AAO BAO CAO DAO may produce inferior print quality could result in permanent damage to the recorder s print head and may void your warranty STORAGE TRANSPORT Paper should be installed in the monitor s strip chart recorder at a times This reduces particle build up on the printhead and facilitates opening the recorder door To protect against paper jams the 170 Series recorder contains a paper loading sensor which detects if the paper has been incorrectly loaded When the recorder detects a paper load error condition m the recorder will not print m Record indicator flashes on and off every second and m three short beeps low tones sound every three seconds at a fixed volume The most likely cause of a paper load error condition is that you loaded the paper with the black squares facing up The correct method is to load the paper with the black squares down as explained later in this section 4 2 170 Series Monitor Revision C 2000947 004 Setup Procedures Loading Strip Chart Paper To install Corometrics catalog number REF 4305AAO BAO CAO DAO chart paper in the 170 Series Monitor follow these steps CAUTION LOADING PAPER Paper loading instructions for a 170 or 120 Series Monitor are different than other Corometrics moni
178. s C214 and CV3 form a parallel resonant tank circuit with an impedance of approximately 17 kOs The shunt impedance of resistors R388 R389 R390 R391 and R392 effectively lower this impedance to 3 6 The gain of the preamplifier is approximately 19 dB and is defined by RI 1 2 gm R386 3 6k 1 002 200 Transistor Q14 and transformer T1 provide a differential output for the preamplifier Diode D19 provides protection for Q13 and removes the low impedance tank circuit L3 and C211 and C212 during transmission by shunting L3 Diode D20 provides overload recovery for the preamplifier and voltage limiting to the demodulator through Q14 and TI 5 28 170 Series Monitor Revision C 2000947 004 Theory of Operation Main Board Theory of Operation U43 is a quad switched capacitor integrated circuit configured as a balanced ring demodulator Its analog inputs are connected to the differential outputs of the pre amplifier at the secondary of T1 The switches within the device are actuated by the signal DET BURSTI The two analog outputs of U43 drive the difference amplifier U44 and its associated components Integrated circuit U45 switches the output of the difference amplifier U44 pin 14 to the track and hold circuit of either Channel 1 or Channel 2 The track and hold circuit for Channel 1 is comprised of components R408 C225 and buffer amplifier U46 pin 7 The track and hold circuit for Channel 2 15 comprised of comp
179. s Monitor Revision C 2000947 004 Serviceable Assemblies Tocotransducer Calibration Trimline Tocotransducers Equipment Required Procedure The Corometrics Trimline Tocotransducer must be calibrated using the following procedure for use with the 170 Series Monitor Digital voltmeter DMS501 or equivalent with x1 probe or leads Common Mode Rejection CMR Test Jack Refer to Figure 7 7 and Table 7 8 Calibrated 170 Series Monitor Screwdriver or potentiometer adjustment tool 52 5 gram weight cat no 13131AA Sealing tape cat no 11043AA Torque seal 9999 IMPORTANT WEIGHT TYPE The weight cat no 13131AA is designed specifically for testing Trimline tocotransducers The weight s bottom lip fits over the transducer s button During this procedure refer to Figure 7 8 for the location of potentiometers in the Trimline tocotransducer Nive _ Oyaz x Oyaz Loop Style Button Top Style Figure 7 8 Trimline Tocotransducer Potentiometer Locations Revision C 170 Series Monitor 7 25 2000947 004 Serviceable Assemblies Tocotransducer Calibration NOTE When performing this procedure keep in mind that due to the nature of the circuitry in the Trimline Tocotransducer there 1s a stabilization time of approximately two seconds for any output voltage After adjusting a potentiometer verify that the output has stabilized prior to taking a voltage rea
180. s and accessories manufactured or recommended by GE Medical Systems Information Technologies Parts and accessories used shall meet the requirements of EN60601 1 1 Disposable devices are intended for single use only They should not be reused Periodically and whenever the integrity of the monitor is in doubt test all functions Refer to the Maternal Fetal Monitoring Operator s Manual for information concerning the limitations of internal and external fetal heart rate monitoring techniques Responsibility of the Manufacturer GE is responsible for the effects on safety reliability and performance if m assembly operations extensions readjustments modifications or repairs carried out by persons authorized by GE m the electrical installation of the relevant room complies with the requirements of appropriate regulations and monitor is used in accordance with the instructions of use Responsibility of the User This device is intended for use by clinical professionals who are expected to know the medical procedures practices and terminology required to monitor obstetrical patients This manual documents all possible parameters available in the 170 Series of monitors It is the responsibility of each hospital to ensure that the Labor and Delivery staff is trained in all aspects of the selected model The 170 Series Monitor is designed to assist the perinatal staff by providing information regarding the clin
181. s may result in some data loss 8 10 170 Series Monitor Revision C 2000947 004 Peripheral Devices RS 232 Connectors 115 Update Mode information is transmitted from the 170 Series Monitor as soon as the information becomes available IMPORTANT DATA REQUESTS When set to the 115 Update Mode the 170 Series Monitor will not respond to any requests for information sent from an external host computer Heart rate data is transmitted on a quarter second basis Uterine activity 1s transmitted eight times per second Modes are transmitted once per minute and whenever a mode change occurs Annotation messages are sent as they are entered from the Annotations window Event marks are transmitted each time the Mark button is selected Fetal movement data is transmitted four times per second Recorder status PAPER OUT information is transmitted once per second when active until the condition is resolved NOTE Refer to Requested Data Format on page 8 12 for information about the response data format The format is the same for both the 115 Update mode and the 115 Transmit Receive mode Revision C 170 Series Monitor 8 11 2000947 004 Peripheral Devices RS 232 Connectors 115 Transmit Receive Mode Requested Data Format Once a valid request for data is received the 170 Series Monitor will send only the information that is requested The selection of this information is done by sending a request stre
182. safe use of this equipment it is necessary to follow all listed instructions However the instructions provided in this manual in no way supersede established medical procedures concerning patient care The monitor does not replace observation and evaluation of the patient at regular intervals by a qualified care provider who will make diagnoses and decide on treatments and interventions INTERFACING OTHER EQUIPMENT Monitoring equipment must be interfaced with other types of medical equipment by qualified biomedical engineering personnel Be certain to consult manufacturers specifications to maintain safe operation LEAKAGE CURRENT TEST The interconnection of auxiliary equipment with this device may increase the total leakage current When interfacing with other equipment a test for leakage current must be performed by qualified biomedical engineering personnel before using with patients Serious injury or death could result if the leakage current exceeds applicable standards The use of accessory equipment not complying with the equivalent safety requirements of this equipment may lead to a reduced level of safety of the resulting system Consideration relating to the choice shall include use of the accessory in the patient vicinity and evidence that the safety certification of the accessory has been performed in accordance with the appropriate EN60601 1 and or EN60601 1 1 harmonized national standard Revision C 170 Seri
183. shells should snap together evenly Slip the retaining ring over them to hold the assembly together 8 Slide the gripper back up the cable and align the two projections at the rear of the plug assembly with the two recesses at the rear of the gripper NOTE Do not allow projections and recesses to become misaligned while sliding the gripper onto the plug or the gripper will not seat properly Position the tongue opposite the gripper boot through which the cable extends This ensures that the cable will extend downward once the plug is inserted into the monitor CAUTION KINKING When sliding the gripper over the plug assembly pull the cable through the boot to prevent any kinking inside the gripper 9 Install the plastic ring on the front of the plug 170 Series Monitor Revision C 2000947 004 Serviceable Assemblies Nautilus Transducer Cable Replacement Nautilus Transducer Cable Replacement You can replace the cable on a Nautilus Tocotransducer or Ultrasound Transducer using one of four kits Refer to Table 7 6 and ensure you have the correct kit The text of the instruction sheet is repeated here for informational purposes Unpack the kit and ensure it contains the items listed in Table 7 7 If something is missing contact your GE Service Representative immediately NOTE Transducers are available in 5 8 and 10 foot cable lengths However the cable assembly included in a replacement kit is available in an
184. sing the left pair of Volume pushbuttons Set the volume to the desired level The recorder prints a continuous line at 120 BPM on the top grid of the strip chart paper Fetal movement markers are shown on for a duration of one second then off for eight seconds then on for one second etc The recorder prints the messages US and FMD on the center margin of the strip chart paper after approximately 20 seconds Table 6 4 Fetal Movement Detection Test Simulator Settings Section Switch Setting Mode US FMD US FMD Signal Level MED Rate MANUAL General Pattern Memory OFF Main CMR UA Mode TOCO 6 16 170 Series Monitor Revision C 2000947 004 Functional Checkout Procedure Fetal Movement Detection Test Inn o In P Figure 6 4 Fetal Movement Detection Revision C 170 Series Monitor 2000947 004 Functional Checkout Procedure Ultrasound Transducer Test Ultrasound Transducer Test Inspect a Model 116 118 120 170 ultrasound transducer as follows Ensure there are no cracks around the transducer face Visibly assess the condition of the cable strain relief and connector pins Disconnect the simulator s ultrasound cable from the front panel of the 170 Series Monitor Connect the ultrasound transducer to either US input receptacle on the front panel of the monitor Verify the following on
185. sion 2 5 volt reference The output of U1 is input to the non inverting input of amplifier U2 pin 3 The output of this amplifier U2 pin 1 drives the emitter follower Q1 The gain of the amplifier emitter follower is 1 6 and is set by resistors R3 and R4 The output of Q1 emitter is 4 V 1 6 x 2 5 This voltage is used to power either an IUP transducer or tocotransducer Resistor R1 in the collector of Q1 is used to sense the current drain from other manufacturers of IUP transducers who don t have an IUP enable associated with them When the voltage at the junction of resistors R36 and R37 falls below 1 164 V 4 mA the output of the voltage comparator U16 pin 8 switches from a high state to a low state which in turn causes transistor Q3 to turn on and transfer the IUP enable across the isolated barrier This signal is named IUPEN However If a tocotransducer is present this signal is ignored Transistor Q3 can also be turned on by the signal PEN For Model 173 and 174 Monitors integrated circuit U33 and associated components provide regulation of the power supplied to the FECG IUP Board circuitry 12 V for Model 173 11 6 V for Model 174 For a Model 174 only the CLEAR signal synchronizes the counter in the PAL this in effect stops the power supply during the receive cycle of the ultrasound process for noise reduction purposes 5 36 170 Series Monitor Revision C 2000947 004 Theory of Operation FECG IUP Board Theory of Operat
186. tage across the test points and record the value Replace the CMR Test Jack with the transducer to be calibrated Place the tocotransducer on a flat surface so that the button is face up then center the 52 5 gram weight on the pressure sensitive button Adjust the Offset R6 potentiometer so that the voltage matches the reading recorded in step 5 0 04 V This voltage is referred to as the weight on voltage Remove the weight and observe the voltage reading this voltage 1s referred to as the weight off voltage A correctly adjusted transducer will show a voltage change of 0 115 V 0 015 V If the change is less adjust the Gain R11 potentiometer counterclockwise to increase the gain If the change is more adjust the Gain R11 potentiometer clockwise to decrease the gain Repeat step 7 through step 9 until the change in voltage between the weight on and weight off conditions falls into specification Torque seal all potentiometers Follow the instructions for Nautilus Transducer Reassembly on page 7 32 Revision C 170 Series Monitor 7 23 2000947 004 Serviceable Assemblies Tocotransducer Calibration Calibration for Cat No REF 2264 AAX BAX CAX DAX EAX FAX Refer to Figure 7 6 during calibration 1 Set the Gain R15 and Offset R5 potentiometers fully counterclockwise 2 Set the Offset Trim R6 potentiometer to its mid position approximately six turns from fully counterclockwise 3
187. the monitor s FECG input receptacle Connect the simulator s US sub cable to the monitor s US input receptacle Set the switches on the Model 325 Simulator according to Table 6 6 If not already on select the monitor s Record button Verify the following on the monitor The FHRI value reads 120 BPM The FHRI heartbeat indicator 2 flashes at a rate of 120 times per minute The FHR2 value varies between approximately 50 and 210 BPM The FHR2 heartbeat indicator KV flashes at a rate consistent with the value The messages FECG and US print on the center margin of the strip chart paper The trend is a continuous plain black line A on the 120 BPM mark on the top grid of the strip chart paper Refer to Figure 6 6 The FHR2 trend is a bold black ramp trace between 50 and 210 BPM on the top grid of the strip chart paper Refer to Figure 6 6 6 24 170 Series Monitor Revision C 2000947 004 Functional Checkout Procedure Dual Heart Rate Test Non Pattern Table 6 6 Model 325 Simulator Settings for FECG US Test Section Switch Setting Main RATE Rate 120 BPM FECG MECG Mode FECG QRS Amplitude 50 uV QRS Polarity Mode US ULTRASOUND FMD Level MED Rate RAMP General Pattern Memory OFF Revision C 170 Series Monitor 2000947 004 Functional Checkout Procedure Dual Heart Rate Test Non Pattern
188. tional Checkout Procedure Ultrasound Test 84118 FHR 240 bpm FHR 14 39 05 AUG 97 US UAINOP 3 CM MIN 2222 22 100 m it Po e PRI ST REST r3 Figure 6 3 Ultrasound Ramp Revision C 170 Series Monitor 2000947 004 6 15 Functional Checkout Procedure Fetal Movement Detection Test Fetal Movement Detection Test This portion of the functional checkout procedure ensures the integrity of the fetal movement detection circuitry and the heart rate channel ofthe recorder Refer to Figure 6 4 NOTE Fetal movement detection 15 an option which must be installed and enabled for use on your monitor 1 Connect the simulator s US sub cable to the US receptacle on the monitor 2 Setthe switches on the Model 325 Input Simulator according to Table 6 4 3 Ifnotalready on press the monitor s Record pushbutton 4 Turn the simulator s Manual Adjustment knob to input an ultrasound signal of approximately 120 BPM Verify the following on the monitor The FHRI value is 120 BPM The FHRI heartbeat indicator 2 flashes at a rate of 120 times minute Ultrasound audio volume from the rear panel speaker can be increased or decreased u
189. to Table 6 3 If not already on press the monitor s Record pushbutton Turn the simulator s Manual Adjustment knob to input an ultrasound signal of approximately 120 BPM Verify the following on the monitor TheFHRI value is 120 BPM The FHRI heartbeat indicator J flashes at a rate of 120 times per minute Ultrasound audio volume from the rear panel speaker can be increased or decreased using the left pair of Volume pushbuttons Set the volume to the desired level The recorder prints a continuous line at 120 BPM on the top grid of the strip chart paper The recorder prints the message US on the center margin of the strip chart paper after approximately 20 seconds Use the simulator s Manual Adjustment knob to increase the heart rate value by less than 13 BPM from the 120 BPM baseline Verify the following on the monitor The FHRI value immediately reflects this new input rate The strip chart recorder immediately reflects this new input rate Use the simulator s Manual Adjustment knob to decrease the heart rate value by more than 13 BPM from the 120 BPM baseline Verify the following on the monitor The FHRI value immediately reflects this new input rate The strip chart recorder prints at the last input rate for an additional 3 seconds before blanking the heart rate data and printing a continuous line at the new input rate Set the simulator s US Rate switch to the RAMP position Verify
190. to disable battery RAM writes Figure 5 12 provides a block diagram of the PAL 5 20 170 Series Monitor Revision C 2000947 004 Theory of Operation Main Board Theory of Operation System Flash ROM Processor Decoder Bank 1 Address Data and Control System Flash ROM Decoder Bank 2 Recorder Control Decoder and Latch Head strobes Head supply control Head protection Recorder Control Latch Decoder Motor phase latches General Decoder and Latch SPI serial peripheral interface chip selects Front end telemetry control Battery RAM RTC Decoder Status Port Decoder Front panel buttons Recorder status Display Decoder UART Decoder Recorder Printhead Data Shift Register Figure 5 12 PAL Block Diagram Revision C 170 Series Monitor 2000947 004 5 21 Theory of Operation Main Board Theory of Operation Display Interface Module to Data Bus a Chip Select and Address The display interface consists of a data buffer U14 for 00 07 which interfaces to the ICM7228A seven segment LED driver IC U1 on the display board and D flip flop which drives the 1 UA segments through Q1 Q4 transistors Data lines have 100 Q series resistors R524 R531 which help to reduce emissions A diode clamp device U18 on the data bus is a used to protect against ESD to the display area Figure 5 13 provides a block diagram of the display interface module Data Bu
191. tors with which you may be familiar 1 Press on each side of the paper drawer to release the drawer latches Figure 4 1 Releasing the Drawer Latches 2 Slide the paper drawer out toward you Figure 4 2 Opening the Paper Drawer 3 Remove the plastic wrapper from the paper and discard Revision C 170 Series Monitor 4 3 2000947 004 Setup Procedures Loading Strip Chart Paper 4 Fanthe pack of Z fold paper on all sides to loosen any folds and to ensure proper feed of the paper throughout the recorder 1 mu LL 3 diii TELL Figure 4 3 Fanning the Paper 5 Hold the package of paper so that the black squares are on the bottom of the pack and the Information Technologies name and page numbers are on the left side of the pack NOTE The black squares indicate the end of the recorder paper When the black squares appear the strip chart recorder has approximately 20 minutes of paper remaining when running at a speed of 3 cm min 120 and 170 UN E E 64386 jn See Re Ils 115 116 Figure 4 4 Orienting the Paper 4 4 170 Series Monitor Revision C 2000947 004 Setup Procedures Loading Strip Chart Paper 6 Unfold two sheets from the top of the pack so th
192. ucer in the cleaning solution at any time Examine the outer sheath of the cable for perforations If the outer covering is damaged in any way do not immerse the cable in the cleaning solution this may result in moisture entering the transducer case which is vented through the cable WARNING LIQUIDS TIf liquids enter the electrical connector check the resistance between the electrical element and the transducer case A resistance level of greater than 10 M74 ensures that the leakage current is within acceptable levels for safe use on patients 6 Leave transparent dome attached to the transducer during storage but slacken the locking ring at least one quarter of a turn CAUTION STERILIZATION Prior to patient use ensure the dome is sterile 9 4 170 Series Monitor Revision C 2000947 004 Maintenance Preventative Maintenance Inspection Preventative Maintenance Inspection Equipment Required Visual Inspection 6 6 Digital Multimeter Dielectric Tester Leakage Current Tester Aluminum Foil Ultrasound Test Body ultrasound transducer wrapped in aluminum foil Tocotransducer Test Body tocotransducer wrapped in aluminum foil FECG Test Body for Model 173 or 174 only Shorted legplate with all three leads tied together IUP Test Body for Model 173 or 174 only SensorTip transducer wrapped in aluminum foil Anti Static Wristband Static Fee Work Surface 170 Series Op
193. und receptacle mechanically keyed to accept a Corometrics FECG cable legplate plug The fetal heart rate derived from the spiral electrode displays in the secondary fetal heart rate display Uterine Activity Connector The uterine activity connector is a white round receptacle mechanically keyed to accept a Corometrics tocotransducer a Corometrics strain gauge transducer plug or any intrauterine pressure catheter with compatible cable plug The uterine activity value obtained from this transducer shows in the uterine activity display l If the Model 173 is interfaced to a clinical information system CIS be aware that the CIS may be designed to alarm when there is no fetal heart rate signal Therefore it is recommended that you unplug the ultrasound and or FECG transducers from the monitor when not in use to eliminate false alarms 3 10 170 Series Monitor Revision C 2000947 004 Controls Indicators and Connectors Front Panel Connectors Model 174 Connectors Ow Orn Figure 3 5 Model 174 Connectors Combi Connector Primary Ultrasound or FECG The combi connector is a blue connector with a dark grey inner center This round receptacle is mechanically keyed to accept only a Corometrics ultrasound transducer plug or a Corometrics FECG cable legplate plug The fetal heart rate derived from this transducer or cable legplate shows in the primary fetal heart display IMPORTANT COMBI CONNECT
194. verted to upper case letters Non standard characters are replaced with spaces The 170 Series Monitor can be configured with the remote annotation capability enabled HP w notes mode or disabled HP mode The following is an example ofa remote message sent to a 170 Series Monitor from a central information system using this serial communications protocol E lt SPW gt AVERAGE VARIABILITY where SPW is an example of a physician s initials To connect a central information system 1 Refer to Table 8 2 for the appropriate interface cable Connect one end to an available RS 232C connector 1 or 2 on the 170 Series Monitor connect the other end to the wallplate wired to the central information system Fora Marquette Quantitative Sentinel Perinatal System the interface cable is catalog number REF 1376A A0 the corresponding wallplate connector is labeled RS 232 COMMUNICATIONS 2 Access the monitor s service setup mode and set the baud rate and mode to either HP or HP w notes mode respectively then exit the service setup mode Revision C 170 Series Monitor 8 7 2000947 004 Peripheral Devices RS 232 Connectors Nellcor Puritan Bennett Model N 400 Fetal Pulse Oximeter Through this interface FSpO readings provided by an NPB Model N 400 are printed every five minutes on the strip chart paper of the 170 Series Monitor The reading is printed in the annotation area between the top and bottom grids A solid diamond mar
195. water 1 Dampen a cloth or paper towel with one of the following products then wring out until only slightly wet Sodium Hypochlorite 5 25 Bleach diluted 10 1 Cidex Sporicidin Soap and water 2 Rub soiled area until clean taking care not to excessively wet the tocotransducer diaphragm seal or the contact surface of the ultrasound transducer 3 Use a cloth dampened with water on the contact surface of the ultrasound transducer and around the seal of the tocotransducer Do not use a sharp object which might damage the seal of the tocotransducer 4 Dry all accessories with a soft dry cloth Revision C 170 Series Monitor 9 3 2000947 004 Maintenance Cleaning Cleaning the UA Strain Gauge Remove the plastic dome 2 Ifdesired wash the transducer with sterile water or saline solution 3 Carefully clean the diaphragm seal with a cotton swab to remove deposits Avoid excessive pressure since this may damage the diaphragm If there are excessive stains on the diaphragm or sides of the transducer remove with a cotton swab and solvents of increasing strength Do not use pumice Ajax Bon Ami or other abrasives 4 After cleaning rinse the transducer thoroughly in distilled water and replace the dome loosely 5 Dry the transducer with sterile gauze CAUTIONS AUTOCLAVE Do not autoclave pressure transducer IMMERSION Do not immerse any part of the electrical connector of the transd
196. yed to accept only a Corometrics ultrasound transducer plug The fetal heart rate derived from this transducer shows in the primary fetal heart rate display 20 Secondary Ultrasound Connector The secondary ultrasound connector is a blue round receptacle identical to the primary ultrasound connector described above The fetal heart rate derived from this connector displays in the secondary fetal heart rate display Uterine Activity Connector The uterine activity connector is a white round receptacle mechanically keyed to accept a Corometrics tocotransducer The uterine activity value obtained from this transducer shows in the uterine activity display l If the Model 172 is interfaced to a clinical information system CIS be aware that the CIS may be designed to alarm when there is no fetal heart rate signal Therefore it is recommended that you unplug the ultrasound transducer s from the monitor when not in use to eliminate false alarms Revision C 170 Series Monitor 3 9 2000947 004 Controls Indicators and Connectors Front Panel Connectors Model 173 Connectors Figure 3 4 Model 173 Connectors 9 amp Ultrasound Connector 9 FECG Connector The ultrasound connector is a blue round receptacle mechanically keyed to accept only a Corometrics ultrasound transducer plug The fetal heart rate derived from this transducer shows in the primary fetal heart display The FECG is dark grey ro

Corometrics®170 Series - Frank`s Hospital Workshop

Contents

Download Pdf Manuals

Related Search

Related Contents

Corometrics&reg;170 Series - Frank`s Hospital Workshop

Contents

Download Pdf Manuals

Related Search

Related Contents

Corometrics®170 Series - Frank`s Hospital Workshop