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Avalon CTS - Frank`s Hospital Workshop

1. AT 3 5 We BEES d fe e 5 Then lift the board clear of the chassis Step 4 Replace Metal Chassis Power Supply Assembly Take the new metal chassis assembly 34 Step 5 Replacing the Receiver Board Insert the antenna socket into its aperture in the new metal chassis and locate the metal screw fixing post through the hole in the left hand side of the receiver board Insert antenna socket through hole in chassis Locate screw fixing post through hole po A in board y a Se 2 Position the receiver board so that all the screw holes on the board align with the screw fixing points on the chassis I p E EN x x Dur VERRE 47 e EX qu fi mede jm Kal Screw locations 3 Drive in the four screws A using a I 10 Torx driver to secure the receiver board to the chassis 35 Step 6 Replacing the MIF Board 1 Carefully locate the multipin connector plug on the underside of the MIF board in the socket on the receiver board ensuring it is accurately aligned lt gt 1 ATT TES Padoa teen a ww ATA FRE T gt x hF m rrt S y A LIA SIC Yt eth bee T 4 d h Ps s Fo D A L O y 2 Carefully apply a little pressure on the left hand rear corner of the MIF board to seat the multipin connector into the socket on the receiver board below 3 Ensure that the screw holes in the board align with the screw fixing po
2. Key d Recommended separation distance in meters m d 2 3 P P maximum output power rating of the transmitter in watts W according to the transmitter manufacturer E1 Tested compliance level in Volts meter for the Radiated RF Immunity test IEC 61000 4 3 Field strengths from fixed transmitters such as base stations or radio cellular cordless telephones and land mobile radios amateur radio AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy To assess the electromagnetic environment due to fixed RF transmitters an electromagnetic site survey should be considered If the measured field strength in the location in which the device is used exceeds the applicable RF compliance level above it should be observed to verify normal operation If abnormal performance is observed additional measures may be necessary such as reorienting or relocating the device These guidelines may not apply in all situations Electromagnetic propagation is affected by absorption and reflection from structures objects and people If you require further information or assistance please contact Philips Support 87 Recommended Separation Distances from Portable and Mobile RF Communication Equipment The device is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled The customer or user of the device can help prevent electromagnetic interference by mai
3. Register the transducers to the base station so that they are active Use the Service Support Tool software to display the RSSI signals for all slots and additionally the amount of squelch noise for slots 1 and 2 Refer to the Service Support Tool Help for details Go to a different room within the intended operating area and place the fluid filled bag there You can place the bag in a bath tub to get a realistic indication of the area of reach when monitoring underwater a metal bath tub and underwater monitoring both reduce the operating range Go back to the PC and check the RSSI signal displayed by the Service Support Tool If the RSSI bar is yellow or green then the signal quality is adequate Poor quality or loss of RF signals will result in a low red RSSI signal together with a high amount of squelch See the Service Support Tool Help Check for frequent mode annotations on the recorder trace Loss of RF signal will show as dropouts on the recorded trace This indicates that you are close to the operating limit of the RF signal range Repeat to cover the whole area of intended operation This is the limit of the range where the system can transmit and receive parameter measurements reliably RF interference You may encounter RF related problems other than those associated with the area of reach Problems concerning RF link stability are due to RF interference There are two categories of interference On channel or narrowband
4. Removing a transducer from the base station during a battery check will start the transducer shut down process To run the battery check all transducers must be inactive and at least one transducer must be docked in the base station In the following example describes a battery check with two docked transducers Transducer 1 and Transducer 2 in slots 1 and 2 respectively Transducer 2 has a battery exhibiting reduced performance Starting the Battery Check Press the two arrow keys a simultaneously The bed label blinks the two digit display goes blank Press 4 twice to enter the A settings A flashes in the display Press AT appears and the 1 blinks Press faa twice to increment A setting to 3 Press Base station display shows two segment bars for the duration of the check 53 Stopping the Battery Test You can cancel the battery check at any stage by pressing for more than one second or by switching the base station to stand by Stages of the Battery Check 54 The battery check has four stages Battery charge cycle 2 Fast battery discharge 3 Battery capacity display These stages are indicated by special patterns in the transducer LCD window Transducer 1 display Transducer 2 display Fast battery discharge 4 Y er I 4 el e The battery is rapidly discharged LJ mmm LJ mmm The right hand horizontal segment bars of the two digit numeric di
5. Set the correct frequency channels using the Service Support Tool see the Service Support Tool Help for details Choose the appropriate country from the drop down menu of available non standard countries As you do this the Service Support Tool automatically determines the relevant frequency ranges to allocate and exclude Refer to the Service Support Tool Help for details Only for Norway The default frequency channels are the ten country specific frequency channels approved for use by the local authorities By choosing Norway from the drop down country menu the Service Support Tool automatically determines the relevant frequency ranges to allocate and exclude f you cannot use these default frequency channels you need to apply for specific fixed frequencies within the full ISM band frequency range from the local authorities Once the frequencies are approved you need to set the base station to the full ISM band frequency range and then to manually set the specific approved fixed frequencies to the transducers within the ISM band Refer to the Service Support Tool Help for details NOTE You can only set the country once If you need to reset the country code you need an access code Please contact Philips Support Ensure that the frequency channels you set comply with any local regulations and that these channels do not cause interference or conflict with any other telemetry devices Testing Transducers This se
6. changing 28 type 28 G general information 1 H hardware MIF board 16 overview of base station 15 overview of transducer 17 transducer ECG frontend 18 Toco frontend 18 US frontend 18 HIF board 16 human interface board See HIF board I installation 5 customer installable 2 special configurations 3 instrument safety test 50 intended readership 1 prerequisites 1 interface pin connections 21 ISM band 9 83 J Japan fixed frequencies 3 frequency bands 9 systems for 10 L latex 39 M M2526A 18 magnets 72 maintenance and safety 43 55 maintenance regular 51 mechanical inspection 51 Metron contact address 46 MIF board hardware 16 major blocks 16 overview 16 Index i removal 31 monitor general description 5 main assemblies See front and rear case assembly monitor interface board See MIF board mounting cart 6 GCX adapter 6 on fetal monitors 6 on flat surfaces 6 using Velcro tape 7 multi region base station 11 N non exchange parts 40 O operating temperatures 5 P patient safety 4 performance assurance tests 44 pin connections fetal monitor interface 21 planning frequencies 11 power supply 16 pre installation consideration 2 prerequisites for readers 1 protective earth test 48 R range definition 62 ready lamp 62 reassembly procedures MIF board 36 receiver board 35 top cover replacement 27 receiver 16 board signal processing 18 functional descripti
7. FMP on L if FMP available Tele Fetal movement on L MECG Inop Not connected Ground MECG Mode Service Interface The service socket on the rear of the base station takes a stereo phone jack for RS232 connection to an industry standard compatible PC installed with the Service Support Tool software Use the interface cable M1350 61675 The transducers must be docked in the base station for communication with the Service Support Tool Phonejack 3 5mm stereo SUB D 9 Pin female Figure 3 Interface cable for connecting an industry standard compatible PC to the Avalon base station 22 Compatible Fetal Monitors A list of compatible fetal monitors including interfaces is given in the following table M1350x with M1350 66531 IF M1350x with M1350 66536 IF M1351A HR 1 with M1353 66531 IF Only one FHR is transmitted Software revision A 04 01 or greater No ECG processing DECG mode generates Err 9 mE EG Software revision A 02 00 or greater Only one HR transmitted with M1353 66531 IF M1353A Y Y Software revision A 02 00 or greater with M1353 66531 E IF Key V supported not supported M1351A is not able to measure DECG MECG Y M1351A with M1353 66531 E IF M1353A 2 24 Disassembly Reassembly WARNING Performance verification do not place the system into operation after repair or maintenance has been performed until all performance tests
8. How to proceed 1 Connect the base station to the fetal monitor 2 Switch on the fetal monitor s recorder 3 Register the transducers to the base station so that they are active Wait until the slot s right hand lamp goes to green 4 Take out the transducer and check for a good RF link The lamp wp should be continuously on 5 Walk with the transducer to cover the area intended for monitoring 6 If you see the signal loss warning lamps w A blinking then you are near the limit of the effective operating range of the system in the environment in question Also check for frequent mode annotations on the recorder trace Loss of RF signal will show as dropouts on the recorded trace This also indicates that you are close to the operating limit of the RF signal range 7 Come back a short distance say one meter three feet at a time until the signal loss warning lamps wp A stop blinking the RF link lamp wp is continuously on and a reliable recorder trace without frequent dropouts is obtained 8 Repeat to cover the whole area of intended operation This is the limit of the range where the system can transmit and receive parameter measurements reliably Using the Service Support Tool How to proceed 1 2 5 Connect the base station to the fetal monitor Switch on the fetal monitor s recorder Connect the PC loaded with the Service Support Tool software to the base station using the PC interface cable M1360 61675
9. Use the Service Support Tool to scan the RF environment for interference refer to the Service Support Tool Help for details Ask users to determine if there is a pattern when the episodes occur and how long they last If there is a pattern for example every morning between 6 and 8 AM try to predict when it will happen again and prepare to troubleshoot Locate where the interference signal is entering the system If an antenna system is being used remove branches from the antenna system to see when the interference quiets down Remember that you will not be able to monitor patients that are being received by antennas that have been removed Remember that interference sources can move making troubleshooting a little more difficult Work quickly Solve the problem by trying to eliminate or repair the source In the case of an antenna system relocate or permanently remove the antenna where the signal is entering Things to check for that cause broadband RF interference are other pieces of electrical equipment especially RF devices using the same frequency range Guidelines for Channel Frequency Configuration Where there is no significant RF interference no other telemetry devices and a small number of Avalon CTS systems ten or less are installed then the standard configuration with automatic free channel search should be used 2 If interference from other RF sources is encountered then it may be appropriate to still u
10. area of reach 10 B base station hardware overview 15 multi region 11 specifications monitor interface 82 receiver unit 81 battery 18 capacity 82 check 53 check stages of 54 exchange 55 life 82 recharging time 82 replacement 89 specifications 82 type 82 battery check 78 bed label changing appearance 74 C C settings 73 cables 84 carrier to noise ratio 60 cart mounting 6 cautions 3 changing fuses 28 cleaning See also Instructions for Use 43 configuration factors affecting 9 non standard configurations 10 normal delivery status 10 configuration settings 73 conventions 3 cordless monitoring expectations 11 D data gathering 61 disassembly procedures MIF board removal 31 receiver board 33 tools required 26 top cover 26 disassembly tools 26 disassembly reassembly procedures 25 37 display window troubleshooting 72 E ECG transducer 18 environment operating 5 exchange parts 39 excluding frequencies 65 F F settings 73 factory information code See FIC fetal monitor mounting system on 6 FIC 72 77 fixed frequencies 65 enabline disabling 74 frequency bands ISM 9 Japan 9 WMTS 9 frequency offset selection 75 frequency options 83 frontends AUX specifications 84 ECG specifications 84 specifications 83 Toco specifications 83 US specifications 83 function buttons troubleshooting 71 function settings 74 bed label appearance 74 fixed frequencies 74 frequency spacing 75 fuses 28
11. as transmitter and receiver ECG Frontend Hardware Several parameter frontends are combined on the ECG frontend board Currently supported parameters are DECG and MECG 18 A seven pin D type socket carries all parameter related inputs and outputs An external mode resistor connected to one of the pins detects which ECG mode to set when an adapter cable is plugged in The M1362B ECG adapter cable used with the M1364A patient module is also used for the fetal scalp or adult electrodes 19 20 3 System Interfaces The Avalon CTS has two system interfaces Fetal monitor interface Service Interface Fetal Monitor Interface The Fetal Monitor Interface on the base station allows digital and analog outputs to the Series 50 fetal monitors The interface is enhanced to support additional transducer combinations for future fetal monitors The following table lists the signals at each pin 1 2 3 4 5 6 7 8 9 Ss N O PIN 13 PIN 1 MECG supported Series 50 B C fetal monitors only 3V RF 10 kQ internal resistance 12V RF 10 kQ internal resistance 48V RF 100 kQ internal resistance Base station on L Reserved DECG inop L DECG Mode L Reserved for future functionality US Mode L Reserved IUP Mode L 21 TOCO External Mode L US LF or ECG Signal TOCO IUP signal Not connected Ground Ground Reserved Tele Marker on the fetal monitor side Tele
12. differ from the country range due to excluded frequency ranges frequency ranges already allocated to other Avalon CTS systems in the same establishment 4 Excluded frequency ranges ranges occupied by other telemetry systems or other RF interferers 5 Fixed frequency ranges Standard Delivery Configuration The Avalon CTS is normally delivered with e Automatic channel search e A standard antenna Using the standard antenna the potential operating range is up to 100 meters 300 feet The actual effective area of reach will vary according to the geographical and physical characteristics of the building where the system is installed and is also influenced by the presence of other radio frequency RF devices or interference We recommend that you define effective operating range prior to putting the system into operation If the area of reach is adequate for the intended monitoring area and the system s operation is not influenced by other RF sources then the normal delivery configuration is sufficient When is a Different Configuration Needed This section deals with possible reasons why the standard delivery configuration may not be adequate When the Area of Reach is Not Sufficient If the area of reach is not sufficient using the standard antenna supplied with the system there are a few things to consider The placement of the antenna has an effect on the operating range If it is located inside a
13. for further details When are Special Configurations Needed If one or more of the conditions above are not met you need a special configuration of the Avalon CTS refer also to Considerations for Choice of Configuration on page 9 For instance you may need to Set fixed frequencies when there are other telemetry systems installed in the same institution In Japan local regulations always require the setting of fixed frequencies This configuration should be carried out by qualified service personnel either from the hospital s biomedical department or from Philips Connect the Avalon CTS to an antenna system because the standard antenna is not sufficient to cover the area intended for cordless monitoring Site preparation antenna system design including guidelines for mixed telemetry equipment installations and installation should be carried out by qualified service personnel from Philips There are country specific regulations requiring special configuration in Japan for example or your country requires a Multi Region base station Warnings Cautions and Important Information WARNING A warning alerts you to a potential serious outcome adverse event or safety hazard Failure to observe a warning may result in death or serious injury to the user or patient CAUTION A caution alerts you to circumstances where special care is necessary for the safe and effective use of the product Failure to observe a caution ma
14. is a short to ground unlimited current will blow the fuse To avoid this a current limiter is used to limit the output current Monitor interface three major blocks make up the monitor interface PWM Toco digital to analog D A converter Two PWM wave D A converters for FHR low frequency LF 1 and FHR LF 2 Digital status ports Transducer slot interface this block is responsible for transducer detection safety features of the charge power switch serial communication between base station and transducers and synchronization clock generation for the power supply To ensure that there is no charge power applied to the charge contacts when there is no transducer docked in a slot charge power in each slot is only applied after a transducer has been detected Drivers for the HIF board interface this block contains the multiplexing and driving components for the function buttons the display backlight and the seven segment LEDs Transducer Hardware Overview The system has three transducer types loco e US e ECG They all share the same modulation and digital processor circuitry power supply liquid crystal display and RF transmitter The processor software is also the same for all transducers The frontends however are specific to each transducer type Functional Description of the RF CPU Hardware The RF CPU section of the transducers is made up of the following functional blocks e CPU micro controlle
15. range Determine the effective operating range of the system in your particular environment and inform the patient to stay within this area while monitoring takes place See Range Definition on page 62 58 Is the antenna functioning properly Standard antenna check the connection to the base station Remote antenna check the connection to the base station Test the antenna system by bringing the transmitter close to the receiver If the transmission is good then the antenna system is not functioning properly See also Broadband Interference on page 64 Is the Avalon CTS mounted in an enclosed Try the base station outside of the rack If there is a metal rack marked improvement use the optional Antenna Extension Mounting kit M1361A Option 1AA Is the patient near material that absorbs If the problem relates to the construction of the electromagnetic waves for example metal building consider an alternative location if this is reinforced concrete elevator doors practical Is the frequency range of the base station Ensure that both the base station and the transducers different from the transducer operate on the same frequencies If necessary change the frequencies Refer to the Service Support Tool Help for details Are there other Avalon systems in the same In the case of multiple cordless telemetry installations location with the same frequency range allocate a unique fixed frequency to each system Is the transd
16. replacement battery already fitted into a replacement battery drawer a special tool for removing the battery drawer an instruction sheet For details of how to replace the battery see the Instruction Sheet Removing and Replacing the Transducer Battery that accompanies the battery replacement kit or refer to page 75 in this guide 55 56 7 Troubleshooting A guide for recognizing system error messages and for troubleshooting problems you may encounter while using the system is given in the Instructions for Use This chapter provides a guide for qualified service personnel for troubleshooting problems that cannot be resolved by the user CAUTION If the troubleshooting procedure requires you to disassemble the base station be certain to follow the disassembly and reassembly procedures given in Chapter 4 Whenever parts are replaced in the system be certain to verify the hardware and software compatibility of the repaired system System is Completely Inoperative If the base station Power On Light does not light when the base station is in stand by or when switched on Reset the system see System Reset below Check that the power cord is firmly connected to the base station Check the condition of the power cable and replace it if damaged or if there are any defective connections Check that the power cord is properly connected to the AC mains supply Check the fuses and replace if necessary See Ch
17. test measures AP GND Safety Test according to IEC 60601 1 Clause 19 4 Report the highest value Medical electrical system Instrument under test Signal parts a Sional pats in and or Y in and or output output Other Instrument Not present in Class 2 Can be multiple different connections to different equipment at same time S 3 Enclosure Leakage Current Test Single Fault Condition SFC Open Supply Test to perform The enclosure leakage current single fault condition open supply is applicable to Class 1 and 2 equipment type B BF and CF Applied Parts The test measures leakage current of exposed metal parts of Instrument Under Test with one supply lead interrupted it tests normal and reversed polarity For type BF and CF Applied Parts measures AP GND Safety Test according IEC 60601 1 Clause 19 4g Report the highest value Medical electrical system In strument under test Signal parti Pana part In andfor MN In andior Other Instrument Applied part Can be multiple different connections ta different equipment ats ame time S 4 Enclosure Leakage Current SFC Open Earth Ground Test to perform The enclosure leakage current single fault condition open earth ground is applicable to Class 1 equipment type B BF and CF Applied Parts The test measures leakage current of exposed metal parts of Instrument Under Test with Protective Earth open circuit it tests normal and rev
18. this see Testing Transducers on page 67 Base station displa MER Ultrasound P4 l LICI transducer display l ll mun slot 1 Em Toco transducer P4 l jue display l Ll num slot 2 SAY ZZ SL YJ lt 71 ap lt TC Cum Signal quality Artificial HR Value of artificial signal signal 44 In this example one US transducer and one Toco transducer are docked No other transducers are active Initial displays appear as shown The battery indicator is lit on the base station The bed label is visible on both displays The transducer display shows which slot is occupied To start the test with no transducers or alarms active Press and hold down The test mode remains active for as long as you keep pressed Battery charging stops and the transducers behave like normal active transducers However to differentiate between test mode and normal operation of a registered transducer the two digit numeric display in the LCD window shows the two segment bars blinking If you remove a transducer while the parameter test is still in progress the transducer shuts down Fach transducer transmits an artificial signal via the programmed RF channel to its registered slot on the base station After decoding and processing the artificial signals are fed via the analog connection to the telemetry interface input of the fetal monitor The signals coming from the base sta
19. using the mounting brackets Mounting Brackets Contact your local Philips representative for additional cart mounting options Refer also to the fitting instructions that come with the relevant solution Applying the Velcro Fixing Tape Two self adhesive Velcro fixing tape sets are supplied each set consisting of two halves Strip off the paper backing on one half of the Velcro set and attach to one side of the underneath of the base station Repeat for the other side 2 Strip off the paper backing on the other half of the Velcro set and attach to the fixing surface so that the two halves of the Velcro set mate up when the base station is correctly positioned Apply other half of Velcro tape to appropriate _ gt place on fixing surface Antenna Extension Mounting Kit If the base station is installed in a cart or other mounting solution where the standard antenna cannot be attached directly to the base station or does not provide sufficient transmission range use the antenna extension mounting kit M1361A Option 1AA The kit contains Antenna extension cable with BNC connectors 1 0m 3 3 ft approx Mounting bracket including fixings for mounting onto Philips Carts The mounting bracket can also be fitted on walls wooden carts or other flat surfaces using fixings not supplied appropriate for the surface material Mounting on Philips Carts N e in 4 lt y 4 Yk sp 1 Remove the plast
20. 201 Base station metal chassis housing bottom including power supply and DC cable Base station top cover assembly including warning label and screws Fuses for power supply T1 6A Antenna See Antenna and Base Station Part Numbers on page 41 BNC connector 90 degrees Battery replacement kit includes tool and instruction sheet Knob replacement kit contains three knobs includes tool and instruction sheet 453563474041 Mounting brackets Supplies and Accessories 15133D 15133E 40483A 40493E M1349A 8120 2961 8120 4808 M2720 61603 M2725A M2726A M2727A M1362B M1363A M1562A M1562B M2208A M1360 61675 40 989803100741 989803100751 989803101601 989803101681 989803103421 453563198651 453563199211 453563474051 862488 862489 862490 989803103551 989803103561 989803104111 989803129891 989803106021 453563277381 Fetal scalp electrode EU and Asia Pacific version shipment country depen dent Fetal scalp electrode US version shipment country dependent Aquasonic US gel Electrodes pre gelled Disposable fetal adhesive pad electrode Ground cable with clamp ground cable IEC Interface cable for connecting the Avalon CTS to a fetal monitor Cordless Toco transducer Cordless US transducer Cordless ECG transducer DECG adapter cable MECG adapter cable for use with M1364A or M1365A Fetal belts washable pack of 3 contain latex Waterproof fetal belts washable pack of 3 Dis
21. 4 and acoustical alarmdefault C5 73 Function Settings To change the function settings manually follow the step by step instructions Bed Label Appearance The bed label can be set to appear as two digit numeric characters between 00 and 99 factory default or as a mix of one alphabetic and one numeric character for example A1 B5 C9 and so forth To change the way the bed label is displayed An yb Press the two arrow keys y a simultaneously The bed label blinks the two digit display goes blank Press A three times to enter the F settings F flashes in the display Press FT appears and the 1 blinks Press again Two digit display shows the current setting 1 0 numeric characters only 1 1 mixed alphabetic and numeric characters Press y or a to change the setting Press to accept the new setting and return to normal operation Enabling Disabling Fixed Frequency The Service Support Tool is required to set the base frequency Fixed frequency selection can be enabled on the base station as follows Press the two arrow keys a simultaneously The bed label blinks the two digit display goes blank Press A three times to enter the F settings F flashes in the n display Press Cc FT appears and the 1 blinks EX 74 Press Two digit display shows the current setting 2 0 automatic channel search 2 1 fixed f
22. 5 2 ft approx cable Service Tool cable M1360 61675 3 0 m 9 8 ft Power cable Country dependent lt 2 4 m 7 9 ft Electromagnetic Compatibility EMC Specifications The Electromagnetic Compatibility EMC specifications in this chapter supplement those given in the Instructions for Use Emissions and Immunity The product is designed and evaluated to comply with the emissions and immunity requirements of international and national EMC standards The EMC standards state that manufacturers of patient coupled equipment must specify immunity levels for their systems See Tables 1 2 and 3 for this detailed immunity information See Table 4 for recommended minimum separation distances between portable and mobile communications equipment and the product Immunity is defined in the standard as the ability of a system to perform without degradation in the presence of an electromagnetic disturbance Caution should be exercised in comparing immunity levels between different devices The criteria used for degradation are not always specified by the standard and can therefore vary with the manufacturer Electromagnetic Immunity The M2720A referred to in the following sections as the device is suitable for use in the specified electromagnetic environment The user must ensure that it is used in the appropriate environment as described below Table 1 Electrostatic t 6 kV contact t 6 kV contact Floors should be wood concrete or cerami
23. 50 MEZ as each transducer frequency channel must be separated by at least 100 KHz from any frequency channel used by any telemetry device other than Avalon CTS transducers 13 14 2 Theory of Operation This chapter describes the functional operation of the system including the base station and transducers It incorporates features of the mechanical design indicating the physical relationship of the assemblies and components Base Station Hardware Overview 48V DC 90V 240V AC F Power Supply i Service Port RS232 Monitor interface Connector 25pin D SUB DC DC Converter 5V Slot Control and Monitor IF 3V Docking Slot 1 Docking Slot 2 Docking Slot 3 12V UIF Board IF 40 pin flat cable connector e Monitor Interface Board MIF NE AN 140 pin Board Connector BNC Antenna Connector Human Interface Board HIF 140 pin Board Connector Main CPU and digital Section Shielded RF Section Receiver Board Figure 1 Base Station Boards 15 The Base Station consists of four functional components Receiver Board The receiver is a double superheterodyne narrowband frequency modulation FM receiver with two mixers and two intermediate frequencies IFs Three radio frequency RF signals can be received independently with three identical receiver channels The digital section of the main CPU is responsible for frequency shift key FSK detection analog to digital conversion of the low f
24. 500 to 434 7900 MHz Most European countries Singapore ISM band 441 7500 to 441 9750 MHz Norway This is the default ten channel band within the ISM band approved by the local authorities Other channels for transducers using specific fixed frequencies within the ISM band may additionally be approved for use Contact Philips Support for further information 608 0125 to 613 9875 MHz US medical telemetry WMTS band Canada Australia and New Zealand Frontends US Intensity Peak negative acoustic pressure b 27 4 4 6 kPa Output beam intensity lob 2 64 0 83 mW cm 7 temporal average power area Spatial peak temporal average intensity l pta 7 0 2 3 mW cm US Frequency 1 MHz ELLE US Burst Repetition Rate EMP Frequency Passband 101o 90 Hz 20x TOCO Frontend Baseline Drift due to Temperature Changes 83 ECG Frontend Type Type Two Lead ECG Input Impedance gt 10MQ 35 Hz CMRR gt 110 dB with 51 1 kW 47nF imbalance Q line frequency AUX Frontend Communication Protocol Serial 1 start bit 1 stop bit 8 data bits no parity Serial Communication Voltage Levels Unipolar 3 V Receive mark OV space 3 V Transmit mark 0 V space high impedance requires pull up resistor Communication Speed fixed 1200 Baud Max Output Current for External Devices 100 mA electronically limited Output Voltage for External Devices 3 V t 276 Cables 84 Monitor interface M2720 61603 1 6 m
25. E base station in addition to dropouts on the recorder traces see also Range Definition on page 62 Refer p g pag Ultimately all of the RF problems within your system occur because of these reasons Both of these problems can be identified by observing the signal loss indicator warning to the Service Support Tool Help for more information about CNR Gathering Data Gathering the information to troubleshoot a potential RF problem will probably account for around fifty percent of your job in determining if in fact you do have an RF problem To gather data you should 1 Observe system performance 2 Question the user Observe System Performance While cordless monitoring offers many advantages it can also provide challenges The reliability and quality of the signal transmission through the air and hospital walls is governed by a number of variables which can be difficult to control A cordless system cannot be as dependable as a hard wired system that transmits its signal through a wire This is because signals travelling through a wire are not subject to factors in the RF environment The effect of problems in the RF environment on the cordless system ranges from momentary loss of the signal to complete inoperability depending on the situation While momentary signal loss is to be expected frequent extended periods of signal loss need to be investigated Observe the system in operation Does the system operation appear norma
26. G transducer ensure that the adapter cable socket is not damaged Toco Ventilation Belt Button The Toco transducer requires air exchange for drift free operation see also the section Underwater Monitoring in the nstructions for Use This is done by a ventilation membrane incorporated in the belt button The effectiveness of the ventilation membrane should be checked at least once a year to ensure that free air exchange takes place If the membrane is congested the belt button must be exchanged see the instruction sheet Removing and Replacing the Transducer Belt Button that accompanies the belt button replacement kit or see page 91 in this manual Testing the Ventilation Membrane If you want to test the ventilation membrane in the belt button you need the following W Manometer Manometer Test volume chamber Three lengths of silicone tubing with a T adapter Remove the belt button from the transducer using the special tool see the instruction sheet Removing and Replacing the Transducer Battery Belt Button 2 Connect the manometer to the volume chamber using two lengths of the silicone tubing and T adapter as shown Connect one end of the remaining length of silicone tubing to the T adapter and the other to the threaded end of the belt button 3 Apply pressure with the manometer for example 250 to 260 mmHg 4 Release the manometer valve The pressure should fall rapidly to indicate that
27. Obstetrical Care aw e prom E GM aa l ye C SERVICE GUIDE Avalon CIS Cordless Fetal Transducer System M2720A FETAL MONITORING PHILIPS Printed in Germany 10 04 Part Number M2720 9000C 4512 610 04681 PHILIPS Avalon CTS Cordless Fetal Transducer System M2720A SERVICE GUIDE M2720 9000C October 2004 Printed in Germany PHILIPS Contents 1 General Information Who Should Read This Guide l What to Do Next l Repair Strategy 2 Pre Installation Considerations 2 When is the Avalon CTS Customer Installable 2 When are Special Configurations Needed 3 Warnings Cautions and Important Information 3 Symbols on the System 3 Patient Safety 4 Protective Earth 5 Environment 5 General Description 5 Mounting Solutions 6 Applying the Velcro Fixing Tape 7 Antenna Extension Mounting Kit 8 Mounting on Philips Carts 8 Mounting on Wooden Carts and Other Flat Surfaces 9 Considerations for Choice of Configuration 9 Frequency Bands 9 Standard Delivery Configuration 10 When is a Different Configuration Needed 10 When the Area of Reach is Not Sufficient 10 When the Standard Configuration is Unsuitable 10 Japanese Systems 10 Multi Region Base Station 11 Frequency Planning 11 Setting Expectations 11 Antenna System Guidelines 12 Before You Install an Antenna System 12 Specifications 13 Mixed Telemetry Devices on the Same M2600A Antenna System 13 2 Theory of Operation 15 Receiv
28. Test on page 50 Perform Visual Power On and Performance test blocks see Table 2 How to Carry Out the Test Blocks Key to Table 2 P Pass F Fail X test result value to be recorded Table 2 M2720A Test and Inspection Matrix Visual Inspect the unit transducers and cables for any damage Are they free of damage If Yes Visual test is passed Power On Power on the unit Does the self test complete successfully If Yes Power On test is passed PO P or PO F Performance Perform the parameter test with all parame ters as described on page 44 Do these tests complete without errors If Yes Performance Test is passed P P or P F Safety 1 Perform Safety Test Protective Earth With mains cable S 1 P X1 or Maximum impedance X1 S 1 F X1 lt 100 mOhms Safety 2 Perform Safety Test Enclosure Leakage With mains cable S 2 P X2or Current Normal Condition Maximum leakage current X2 S 2 F X2 lt 100uA Safety 3 Perform Safety Test Enclosure Leakage With mains cable S 3 P X3or Current Single Fault Condition Open Maximum leakage current X3 S 3 F X3 Supply lt 500uA Note maximum leakage current in the US 300uA Safety 4 Perform Safety Test Enclosure Leakage With mains cable S 4 P X4or Current Single Fault Condition Open Maximum leakage current X4 S 4 F X4 Earth lt 500uA Note maximum leakage current in the US 300uA Sy
29. and safety tests listed in Chapter 6 of this service manual have been performed Failure to perform all tests could result in erroneous parameter readings or patient operator injury Energized circuits are accessible with the covers open Do not work on the base station with the covers open and AC power connected Only qualified service personnel should open or disassemble the base station Before attempting to open or disassemble the base station disconnect it from the AC mains supply CAUTION Observe ESD electrostatic discharge precautions when working within the unit Introduction Remember to store all screws and parts in a safe place for later refitting How to Use this Chapter The disassembly sections detail the step by step procedures you use to access replaceable parts of the base station All the transducers are sealed at the factory and are not repairable Replacement transducers are supplied complete with both battery and belt button fitted The Avalon base station consists of two major assemblies The top cover assembly The chassis assembly The top cover assembly contains the human interface HIF board the keypad inlay and the battery charge contacts and wiring The top cover assembly is only available as a complete assembly and a repair to any part of the top cover assembly is effected by replacement of the whole assembly The chassis assembly contains the metal chassis and power supply the re
30. anging Fuses on page 22 System Reset Always reset the system as the first troubleshooting step With the transducers docked in the appropriate slots disconnect the power cord from the AC mains supply Wait until the AC power LED is off then reconnect the system to the AC mains supply A persistent problem indicates a genuine malfunction If you think that the display information is suspicious initiate the power on self test by switching the base station to standby and then switching it on again All display elements of the transducer and base station should be displayed briefly before the normal registration process starts Common Problems Reasons why the cordless transducers may not work properly are given below along with suggested actions to take Check the antenna ls it correctly and securely attached to the base station Scan for RF interference see Scanning the Available Frequency Range on page 64 Base station cannot tune into a free channel Exclude frequency ranges with RF interference see Excluding Frequencies on page 65 Fix the RF frequency used by the system see Base Station with Fixed Frequency on page 65 Out of available channels For example after Check if it is possible to get more free channels As a excluding problem frequencies only two workaround you could alternate the use of one of the channels are available but you want to use three channels between US and ECG tra
31. ansmitter Receiver on the same antenna system may be supported Please see below for further details of how to configure and design a mixed telemetry system Frequency converters used in USA with M2600A adult telemetry cannot be used with the Avalon CTS Contact Philips Support regarding antenna system design Before You Install an Antenna System 12 In general before each antenna system installation a site frequency plan is required which includes an appropriate frequency plan for M2720A and all other telemetry devices used in the same hospital Using the results of this frequency survey the appropriate frequency allocation mode must be set for the M2720A for example automatic frequency allocation mode or fixed frequency mode for the base station Under normal circumstances the fixed frequency mode for the transducer should not be used except for Japan See the Service Support Tool Help for further information about choices of frequency allocation modes An antenna system for the M2720A should be designed by an antenna expert experienced in designing M2600A antenna systems For antenna system calculations the specifications for M2720A can be added to the Antenna System Design Spreadsheet This is important because most antenna systems for the M2720A are non standard in design as the RF signal typically needs to be distributed to several rooms Specifications Antenna system calculations for fetal telemetry differ from thos
32. anually using the configuration keys on the base station refer to page 66 The first slot allocates the base fixed frequency to its transducer The frequency allocated by the second slot to Its transducer is the base frequency plus the channel spacing whether default or user selected The frequency allocated by the third slot is the frequency of the second slot plus the channel spacing Slot 1 Slot 2 Slot 3 Frequency X X Channel Spacing X 2 x Channel Spacing base frequency Due to this way of allocating the frequencies to the second and third slots avoid setting the base fixed frequency for the first transducer slot at the very end of the available frequency range for your country otherwise it will not be possible to allocate a frequency channel to slots 2 and 3 65 Transducers with Fixed Frequency Sometimes it is preferable or necessary to set fixed frequencies for the transducers In this case the base station is set to automatic channel search When a transducer is docked in a slot the base station recognizes that the transducer is set to a fixed frequency and allocates that frequency to the transducer The setting of fixed frequencies is done using the Service Support Tool only after consulting Philips Support Refer to the Service Support Tool Help for details Transducers with fixed frequencies have the following advantages They are particularly suitable for use with antenna systems They are part
33. ard antenna supplied with the system there are a few things to consider initially The placement of the antenna has an effect on the operating range If it is located inside a metal cart or other RF absorbing material then place the antenna externally by using the Antenna Extension Mounting Kit M1361A Option 1AA to increase the range Check the orientation of the antenna In general the antenna provides the greatest range when it is positioned vertically If the area of reach is still insufficient consider installing an antenna system Range Definition You can define the area of reach by performing a walk test either carrying a fluid filled bag with the transducers attached to it or by wearing the transducers The fluid filled bag has the advantage that it can be placed in various positions for example in a bath tub which would not be so practical for the tester The area of reach can be determined by observing how far from the base station the transducers will still work normally allowing continuous monitoring The testers can communicate with each other using appropriate communications equipment for example walkie talkies There are two ways to define the area of reach Watching the indicator warning lamps on the base station Watching the Received Signal Strength Indicator RSSI using a PC and the Service Support Tool Refer to the Service Support Tool Help for more details Using the Base Station 62
34. c tile If floors are discharge ESD 8kV air 8kV air covered with synthetic material the relative humidity should be IEC 61000 4 2 at least 3076 Electrical fast t 2 kV for power supply lines t 2 kV for power supply lines Mains power quality should be that of a typical commercial and transient burst 1 kV for input output lines 1 kV for input output lines or hospital environment IEC 61000 4 4 Surge t 1 kV differential mode t 1 kV differential mode Mains power quality should be that of a typical commercial and IEC 61000 4 5 2 kV common mode 2 kV common mode or hospital environment Voltage dips 576 Ur 076 U Mains power quality should be that of a typical commercial and short gt 95 dip in Uy for 0 5 cycles 100 dip in Uy for 0 5 cycles or hospital environment If the user of the device requires interruptions and 40 Ur 40 Uy continued operation during power mains interruptions it is voltage variations 60 dip in Ur for 5 cycles 60 dip in Ur for 5 cycles recommended that the device is powered from an on power supply 70 Ur 70 Us uninterruptible power supply input lines 30 dip in Ur for 25 cycles 30 dip in Ur for 25 cycles IEC 61000 4 11 pus Ar x lt 5 U 076 Ur gt 95 dip in UT for 5 sec 100 dip in Uy for 5 sec Power frequency 3 A m Power frequency magnetic fields should be a t levels 50 60 Hz characteristic of a typical location in a typical commercial and or magnetic f
35. cable for the Service Support Tool M1360 61675 Downloadable software upgrade file instructions for the download procedure come with the software package Contact Philips Support for further details Refer to the Service Support Tool Help for details of the upgrade procedure For tests to perform after upgrading see When to Perform Safety Tests on page 46 Please refer to your local Response Center for the part number 79 80 10 Specifications Specifications for the accuracy of heart rate measurements are given in the Instructions for Use of the fetal monitor General Temperature Range Charging 0 C to 45 C 32 F to 113 F Operating 0 C to 45 C 32 F to 113 F Storage without battery 20 C to 60 C 4 F to 158 F Storage with battery Depends on initial charge level and temperature 8 P 8 p storage time decreases significantly at high gt 45 C 113 F temperatures Humidity Range Operating 5 to 95 relative humidity 40 C 104 F Storage 5 to 85 relative humidity 50 C 122 F Altitude Range Operating lt 3000m 9800 ft Storage lt 15000m 49000 ft Base Station Supply Voltages 100 VAC to 240 VAC 10 Supply Frequency Range 50 Hz to 60 Hz Type of Protection Against Class equipment Electrical Shock Dimensions and Weight Size mm in width x depth x height 350 x 240 x 75 13 8 x 9 5 x 3 0 in Weight 2 5kg 5 5 lbs without transducers Input Sensitivity Input Sensitivi
36. ceiver board and the monitor interface MIF board The power supply always comes complete with the chassis without boards and a repair to either the power supply or the chassis is effected by replacement of this chassis power supply assembly There are no boards available individually as replacement parts In the case of a defective receiver board or MIP board a repair is effected by exchanging the whole base station assembly unit exchange All part numbers of spare parts are listed in Chapter 5 Tools Required CAUTION When replacing the front cover do not over torque the screws Excessive torque may damage the plastic screw mountings You need the following tools e orx head screwdriver size 1 10 Or e orx bit for suitable driver size 1 10 Removing the Top Cover Assembly 1 Carefully place the base station upside down To avoid scratches place the unit on some cloth or other soft surface E p Screw locations A x a R b e WN EM A N 2 Remove the six screws securing the top cover assembly to the chassis using a T 10 Torx driver 3 Holding both top cover and chassis assemblies together place the base station upright again 26 4 Lift the front edge of the top cover and disconnect the spade connector for the ESD ground wire from the terminal on the metal chassis ESD ground spade connector 5 Now raise the cover a little more and disconnec
37. correct approved frequency range is then enabled locally during installation using the Service Support Tool See also Multi Region Base Station on page 66 Frequency Planning For Japan and countries using the Multi Region base station and for multiple cordless telemetry installations in the same hospital an RF frequency plan should be implemented Document all frequencies or frequency ranges occupied by Other telemetry systems adult and fetal Multiple Avalon CTS systems operating on fixed frequencies Remember that the Avalon CTS is also a potential interference source for other RF systems Other sources of RF interference other electrical equipment broadcasting stations or paging systems for instance Once you have identified all the occupied frequencies or frequency ranges for example by using the Service Support Tool software you can change the system s configuration by following the guidelines for RF channel frequency configuration Exclude frequency ranges already occupied by other telemetry systems or that are subject to interference from other RF sources see page 65 Use fixed frequencies for the base station possibly in conjunction with altering the channel spacing see page 74 Use fixed frequencies for the transducers see page 66 Setting Expectations No matter how good a telemetry system design is it will always experience occasional loss of radio communications result
38. ction shows you how to carry out an electrical check on the transducers Details of the visual inspection are given in Chapter 6 Ultrasound Transducer Electrical Check CAUTION Use of ultrasound gel that is not approved by Philips may reduce signal quality and may damage the transducer This type of damage is not covered by warranty Register the transducer to the base station following the red color coding so that it displays a bed label and has an active RF link see the Instructions for Use for details 2 Turn the fetal monitor s loudspeaker volume up to an audible level 3 The ultrasound transducer contains seven piezoelectric crystals Basic functioning of each can be verified by holding a flat bottomed pencil or similar above each crystal and moving it up and down as shown psml18sca tif Figure 4 Testing an Ultrasound Transducer Using a Pencil 67 A sound should be heard for each crystal tested The pencil should be held two to three centimeters from the transducer surface when the test is carried out Crystals lt CEN O SEO Oo ustrancs hpg Figure 5 Position of Crystals in an Ultrasound Transducer 4 A sound should also be heard when the transducer is moved back and forth over a solid surface or the hand as shown below pop21sca tif Figure 6 Checking an Ultrasound Transducer If the test results are not as outlined above repeat the tests with another transducer If this does not solv
39. e the problem Check that the base station is properly connected to the fetal monitor There is likely to be a RF related problem Check for frequent mode annotations on the fetal monitor s recorder to confirm this Refer to the information on RF troubleshooting in this chapter and to the chapter Troubleshooting in the Instructions for Use If the problem persists replace the transducer The transducers are sealed and are NOT repairable TOCO Transducer Electrical Check 1 Register the transducer to the base station following the brown color coding so that it displays a bed label and has an active RF link see the Instructions for Use for details Ensure that the Toco display shows 20 on the fetal monitor when the recorder is switched on the date time mode and paper speed are printed on the recorder trace 68 2 Press the transducer Toco sensor firmly and look for a deflection on the display and recorder The external Toco display maximum is 127 units 3 Lay the transducer face up on a hard flat surface for a few seconds so that the belt button and the take out aid end of the transducer make contact with the surface see Figure 7 on page 69 4 Press the Toco Baseline Key to re adjust the Toco display to 20 5 Turn the transducer over so that the Toco sensor is resting on the flat surface The transducer will always adopt the same slightly inclined position with the take out aid end of the transd
40. e checks CAUTION Failure on the part of the responsible individual hospital or institution using this equipment to implement a satisfactory maintenance schedule may cause undue equipment failure and possible health hazards Care and Cleaning For detailed instructions on how to care for and clean the base station transducers and the monitoring accessories see the Instructions for Use Recommended Frequency of Testing Perform the procedures as indicated in the suggested testing timetable These timetable recommendations do not supercede local requirements Performance Assurance see page 44 and Safety Once a year or as specified by local laws and after re Checks see page 45 pair where the power supply is replaced Regular Preventive Maintenance see page 51 Once a year or after repair 43 Performance Assurance Tests Self Test The system performs a basic level self test when you switch it on You hear a beep and all the display elements are shown for about one second and then the display reverts to normal display mode Parameter Test This tests the entire signal path from the individual transducers connected via radio frequency through the base station to the fetal monitor with artificially generated test signals We recommend you perform this test once a day and whenever you doubt the reliability of the measurements The parameter test does not test the transducers themselves there is a separate test for
41. e of adult M1402A or M2602A mainframe systems The M2720A uses an internal signal amplifier requiring the antenna system to have a Odb to 3db gain at the final antenna connection to the Avalon CTS The minimum carrier to noise ratio CNR should be 8dB M2720A Avalon CTS typical specifications ISM 0 to 3db 8dB 141dB 7 36 5 dBm 4dBm 433 443 MHz Japan 0 to 3db 8 dB 14 6 dB 6 86 5 dBm 4 dBm WMTS 0 to 3db 8 dB 11 1 dB 8 55 5 dBm 4 dBm Can be added to the antenna design spreadsheet as M2720A specific parameters Mixed Telemetry Devices on the Same M2600A Antenna System A mixture of M2720A and other supported Philips telemetry devices for example M1310A or M2600A Adult Telemetry Transmitter Receiver on the same antenna system are supported under the following conditions M2600A antenna system design rules are followed Antenna input must be within the range of OdB to 3dB Each Avalon CTS channel must be separated by a minimum of 100 KHz from any non Avalon frequency channel The internal channel frequency spacing between Avalon CTS transducers should be 25 KHz factory default setting Example A Series 50 T Fetal Telemetry System M13104A is already connected to an antenna system and its transmitter is set to 433 650 MHz You need to connect an Avalon CTS to the same antenna system In this case the first usable frequency channel for any M2720A transducer is either 433 550 MHz or 433 7
42. edical Systems has no control over the RF environment in the hospital If interference exists at the operating frequencies telemetry system performance will be affected Careful selection of frequencies for all wireless devices used within a facility telemetry transmitters walkie talkies ambulance radios other wireless medical devices etc is important to prevent interference between them Frequency management is the responsibility of the hospital Antenna System Guidelines The Avalon CTS M2720A is compatible with the dual band antenna system components used with the M2600A adult telemetry system Antenna systems must be designed according to adult telemetry system rules and presales activities and site preparation must be done according to the existing M2600A series antenna system rules These activities are not bundled into the product price and have to be ordered separately from the Philips Medical Support Organization In addition to the M2600A antenna system design rules the following antenna specifications apply to the Avalon CTS Only original M2600A antenna system components will be supported The antenna spacing must not exceed a radius of 10m 32ft Existing antenna systems used for M1310A with 15 5m 51ft antenna radius spacing do not comply and must be redesigned to work with the Avalon CTS A mixture of Avalon CTS and other supported Philips telemetry devices for example M1310A or M2600A Adult Telemetry Tr
43. er Board 16 Human Interface Board 16 Power Supply 16 Slot Control and Monitor Interface Board Hardware 16 Transducer Hardware Overview 17 Functional Description of the RF CPU Hardware 17 Base Station Communication 18 Power Supply and Battery Charger 18 Modulator 18 RF Transmitter 18 Toco Frontend Hardware 18 Ultrasound Frontend Hardware 18 ECG Frontend Hardware 18 3 System Interfaces 21 Fetal Monitor Interface 21 Service Interface 22 Compatible Fetal Monitors 23 4 Disassembly Reassembly 25 Introduction 25 Removing the Top Cover Assembly 26 Replacing the Top Cover Assembly 27 Changing Fuses 28 Changing the Power Supply Metal Chassis Assembly 31 5 Spare Parts 39 Exchange Parts 39 Non Exchange Parts 40 Supplies and Accessories 40 Antenna and Base Station Part Numbers 41 6 Preventive Maintenance and Safety 43 Care and Cleaning 43 Recommended Frequency of Testing 43 Performance Assurance Tests 44 Self Test 44 Parameter Test 44 Testing Alarms 45 Safety Tests 45 Safety Test Procedures 46 When to Perform Safety Tests 46 How to Carry Out the Test Blocks 47 Description of Applicable Safety Tests 48 S 1 Protective Earth Test 48 S 2 Enclosure Leakage Current Test Normal Condition NC 48 S 3 Enclosure Leakage Current Test Single Fault Condition SFC Open Supply 49 S 4 Enclosure Leakage Current SFC Open Earth Ground 49 Instrument Safety Test 50 System Test 50 What is a Medical Electrical System 50 General Requi
44. er build and the Frei version later build There are two field replaceable fuses located in the power supply They are of type T1 6A In the photographs that follow in this section the MIF and receiver boards are removed for clarity but the power supply cover can be removed with the boards in place Io gain access to the fuses Remove the top cover assembly see page 26 2 Remove the three screws securing the power supply cover lt P Boards shown removed for PIE NW ne illustration p purposes b aF gt Screw locations 3 Unplug the connector for the power supply cable from the power supply gt Remove power supply cable cover to the outer edge of chassis to clear lugs eared Lugs cl 5 Then remove the cover by lifting it straight up 29 E Power supply cover removed AS 10187837 Nero FREI H version i w zn em 2 c i S es CELESTICA version RNING OR CONTINUED PRITECTION AGAINST FIP e ALS ONLY CH SAME TYPE AND R AG OF FUSE P er 08 4 pas Ala BEGE 89 96 Replace the power supply cover and secure it with the three screws 30 8 Reconnect the power supply cable connector to the power supply 9 Replace the top cover assembly see page 27 Changing the Power Supply Metal Chassis Assembly The power supply and the metal chassis come as one unit th
45. ersed polarity For type BF and CF Applied Parts the test measures AP GND Safety Test according IEC 60601 1 Clause 19 4g Report the highest value 49 Medical electrical system Instrument under test Signal parts in Signalparte in and or Y in and or output output L N O O H O es Pp Other TN i 52 i Instrument Oi O Qui O a amp D N L a pe S4 MD PE S Applied part gt Can be multiple different connections to different equipment at same time Instrument Safety Test You must perform the instrument safety test every time you exchange repair upgrade or in any other way work on the power supply or the power inlet You must test the system as a stand alone system and as a system in conjunction with the fetal monitor The instrument safety test is made up of four separate tests m Protective Earth Test m Enclosure Leakage Current Normal Condition m Enclosure Leakage Current Single Fault Condition m Patient Leakage Current Single Fault Condition System Test After mounting and setting up a system perform system safety tests What is a Medical Electrical System A medical electrical system is a combination of at least one medical electrical device and other electrical equipment interconnected by functional connection or use of a multiple portable socket outlet General Requirements for a System 50 After installation or subsequent modification a system must comply w
46. est and inspection procedures applicable to the Avalon CTS Cordless Fetal Transducer System Use the tables in the following section to determine what test and inspection results must be reported after an installation upgrade or repair has been carried out Test Blocks in Table 1 tells you when to carry out the safety tests Test and Inspection Matrix in Table 2 tells you how to carry out the safety tests WARNING Safety test requirements are set acccording to international standards such as IEC EN 60601 1 and IEC 60601 1 1 their national deviations such as UL2601 1 CAN CSA C22 2 No 601 1 M90 and No 601 1 S1 94 and specific local requirements The safety tests detailed in this chapter are derived from international standards but may not be sufficient to meet local requirements CAUTION The correct and accurate functioning of the equipment is ensured by the successful completion of the safety tests performance test and the system test Safety Test Procedures The test procedures outlined in this section are to be used only for verifying the safe installation or service of the product in its place of use The safety tests described here refer specifically to installation setup repair and upgrade activities and not to the aspects of safety that have already been tested during final When to 46 acceptance at the factory Use safety testers complying with IEC 60601 1 internationally or any local regulations ap
47. ey are not available independently The power supply cable is reusable and also comes with the new chassis power supply assembly To change the power supply metal chassis assembly Step1 Remove the Top Cover Assembly See page 26 Step2 Remove the MIF Board Remove the six pin power supply connector from the MIF board SEEETITITITFR Six pin power 1 Ex connector 24 I L T W 3 Tn gt THT LLLLLITITIITT Screws A 31 3 Then remove the two screws B for the fetal monitor interface socket using a 6mm socket driver Screws B d y PR 4 Disconnect the multipin connector joining the MIF board to the receiver board by lifting the corner of the MIF board nearest to the power supply cover E Z Z u Q Y lt Ng gt y A x sieo fw er TEE gt L thine syn f q wert P connector MIF board removed 32 Step 3 Removing the Receiver Board 1 First remove the MIF board see Step 1 2 Remove the four screws securing the receiver board to the chassis using a 1 10 Torx driver RN Screw locations 3 Gently lift the front right hand corner of the receiver board at the same time pulling it forward Mm crirsncA AP1249 Led i ene Cm PT mn ea MADE 14 CAMADA 4 Next lift the rear left hand corner of the board so that the board is clear of the metal screw fixing post 33 an i Vo ere
48. g Settings 73 Configuration Settings 73 Function Settings 74 Bed Label Appearance 74 Enabling Disabling Fixed Frequency 74 Selecting the Channel Frequency Spacing 75 Action Settings 77 Displaying the Software Revision n Clearing the Factory Information Code FIC Log 77 Starting the Battery Check 78 9 Upgrades 79 10 Specifications 81 General 81 Base Station 81 Transducers 82 Frequency Bands 83 Frontends 83 Cables 84 Electromagnetic Compatibility EMC Specifications 85 Emissions and Immunity 85 Electromagnetic Immunity 85 Finding Recommended Separation Distances 86 Recommended Separation Distances from Portable and Mobile RF Communication Equipment 88 A Removing and Replacing the Transducer Battery 89 B Removing and Replacing the Transducer Belt Button 91 93 C Avalon CTS Frequency Table General Information This guide tells you how to service and repair the base station M2720A and transducers M2725A M2726A and M2727A of the Avalon CTS Cordless Fetal Transducer System It describes the system hardware and software tells you how to diagnose operating and servicing problems and how to test the system As this system is intended to be installed by the customer refer to the Instructions for Use for details of how to install the system See also Pre Installation Considerations on page 2 The Avalon CTS Cordless Fetal Monitoring System Service Guide supplements the maintenance and troubleshooting proced
49. ging times Modulator The analog heart rate signals ultrasound Doppler or fetal ECG are pre processed and band limited by filters The signals are then fed into a programmable gain amplifier controlled by an automatic gain control circuit and a digital FSK modulated subcarrier 1 6 kHz or 2 4 kHz is added to the RF carrier signal The subcarrier is responsible for the digital transmission of the Toco data along with safety and status information such as serial number bed label fetal movement data battery information RF Transmitter The RF transmitter block contains a PLL synthesizer that divides the reference frequency down to 12 5 kHz and can be tuned in steps of 12 5 kHz a voltage controlled ocillator VCO a power amplifier antenna driver Toco Frontend Hardware Uterine activity is measured by evaluating the hardness of the mother s abdomen with a pressure sensitive resistor bridge DMS element The DMS element requires an excitation voltage and its differential output signal is proportional to the pressure applied to the DMS element An AC excitation voltage is used and the resulting AC output signal is amplified and converted to a pressure proportional DC voltage by a synchronous rectifier followed by a low pass filter Ultrasound Frontend Hardware The ultrasound frontend is a pulsed Doppler system with a 1 0 MHz ultrasound frequency and a pulse repetition rate of 3 2 kHz Seven ultrasound crystals are used
50. hat the Cardio 1 Combi channel display on the fetal monitor shows nOp with the adapter cable M1362B attached 4 Take a new sterile Fetal Scalp Electrode and connect it to the DECG adapter cable 69 5 EITHER Make a short between the spiral elctrode and the reference electrode with your fingers it is best to wet your fingers first CAUTION The tip of the spiral electrode is sharp Take care not to injure your fingers Spiral Electrode Reference Electrode OR Cut off the plastic tip of the fetal scalp electrode containing the spiral and reference electrodes from the end of the wires Strip the insulation from the end of the wires and connect them to a patient simulator Note We do not recommend the use of a specific patient simulator The use of a patient simulator does not allow checking the specification of the ECG Functionality it allows only a check of general function Result NOP should disappear If the test results are not as outlined above repeat the test with another ECG transducer If this does not solve the problem consider the following Check that the base station is properly connected to the fetal monitor There is likely to be an RF related problem Check for frequent mode annotations on the fetal monitors recorder to confirm this Refer to the information on RF troubleshooting in this chapter and to the chapter Troubleshooting in the Instructions for Use If nOD
51. ic cover A Slide the fixings for the mounting bracket C into the groove B in the cart Replace the plastic cover A before sliding the mounting bracket fully down OW Lb Slide the mounting bracket downwards in the groove B in the cart until the antenna holder part of the bracket rests on the plastic cover 5 Tighten the fixing screws to secure the mounting bracket Mounting on Wooden Carts and Other Flat Surfaces Considerations for Choice of Configuration There are a number of factors that can influence how you finally configure the Avalon CTS Frequency Bands Depending on the country of use the system uses radio frequencies within one of three ranges the Wireless Medical Telemetry Systems WMTS band the Industrial Scientific and Medical ISM band or a range of bands specific to Japan The actual approved frequencies used depend on country specific regulations The following diagram gives an example overview of the system s frequency band configuration Allocated Channe m Excluded Range Available Range m Country Range m Full Range 433 4335 434 4345 435 435 5 436 436 5 437 437 5 438 4385 439 4395 440 4405 441 441 5 442 4425 443 MHz 1 The full hardware frequency range 10 MHz wide 2 The country specific frequency range governed and approved by local regulatory bodies 3 The available frequency range shows the real current frequency range available within the country range This will
52. icularly suitable in large installations where you can avoid interference problems between the large number of telemetry systems or other RF interference sources They make it easier to prevent the Avalon CTS system from interfering with other RF devices They make it easier to interchange transducers between different base stations Do not assign the same frequency to more than one transducer Note that in case of repair transducers with fixed frequencies cannot be exchanged so easily Transducers for Japan Transducers for Japan must use fixed frequencies They are initially shipped from the factory with no frequencies assigned to them During installation they are initialized and their frequencies are set This can only be done once and if it needs to be done again an access code must be obtained from the factory Refer to the Service Support Tool Help for details Multi Region Base Station The Multi Region base station is a special version of the the ISM band base station using only restricted RF channels within the broader ISM band Delivery Status The base station receiver is disabled at the factory before shipment If you dock transducers in a base station in this disabled state the base station will not assign any frequencies to them The tranducer display will show a blinking AN em em Warning message Installation 66 You need to enable the base station during installation using the Service Support Tool
53. ield hospital environment IEC 61000 4 8 In this table U is the a c mains voltage prior to application of the test level 85 Finding Recommended Separation Distances WARNING The device intentionally receives RF electromagnetic energy for the purpose of its operation Therefore other equipment may cause interference even if that other equipment complies with CISPR emission requirements In the following table P is the maximum output power rating of the transmitter in watts W according to the transmitter manufacturer and d is the recommended separation distance in meters m Portable and mobile RF communications equipment should be used no closer to any part of the device including cables than the recommended separation distance calculated from the equation appropriate for the frequency of the transmitter Field strengths from fixed RF transmitters as determined by an electromagnetic site survey should be less than the compliance level in each frequency range Interference may occur in the vicinity of equipment marked with this symbol Q Table 2 Note The device meets the compliance level of 3 0 Vays according to IEC 60601 1 2 for most of the specified test frequency range However within the frequency ranges specified in this table there are some frequencies at which the immunity level is below the IEC 60601 1 2 test level Within each frequency range the worst case immunity level is given Over the frequency ra
54. ing in US Toco ECG dropouts A telemetry system will never be as reliable as a hard wired monitor that transmits its signal through a wire If occasional loss of US Toco ECG monitoring is not acceptable for certain patients they should be connected to a hard wired bedside monitor WARNING Telemetry should not be used for primary monitoring in applications where the momentary loss of the US Toco ECG signal is unacceptable Following are guidelines to set proper expectations of hospital staff and to improve system performance Clinicians will tend to see more motion related artifact on the US Toco ECG measurements of ambulatory patients than on patients that are restricted to a bed Patients should be restricted to the designated coverage area Monitoring performance will degrade if patients go outside the radius of coverage of the receiving antenna Keep the size of the antenna system as small as possible Telemetry system performance will degrade as the system size increases The larger a system is the greater the potential for receiving interfering signals In addition as more devices are added to the antenna system the noise generated by the antenna system itself increases A patient location protocol is critical to a telemetry system If a life threatening event occurs the clinician must be able to locate the patient quickly The importance of this increases as the antenna system size increases Philips M
55. interference Broadband interference One Channel or Narrowband Interference This is defined as an interference source that occupies the same bandwidth as the transmitter and only interferes with one channel or two frequency adjacent channels It is likely that the channel is set to the same frequency as another telemetry unit or there is interference from an external source such as a broadcasting station Be sure to check for adult and fetal telemetry channels Also check for other radio devices such as walkie talkies paging systems ambulance systems and so forth If you encounter narrowband RF interference you can Identify the problem frequencies or frequency ranges see Scanning the Available Frequency Range on page 64 Exclude these frequencies or frequency ranges see Excluding Frequencies on page 65 Set the base station or the transducers to fixed frequency operation see page 65 63 C E Ka Anal Knannel t Broadband Interference A broadband interference source occupies the bandwidth of many channels causing degradation of the carrier to noise ratio CNR on all of the telemetry channels for as long as it is present This results in an increase in dropouts on all of the channels The system has quiet and noisy periods When the noise source is on the system is noisy When the noise source is off the system performs well To try to eliminate the problem Troubleshoot the problem as it is occurring
56. ints below 4 Drive in the two screws B with a T 10 Torx driver III II LU LEGE 36 6 Reconnect the power supply connector plug to the socket at the front left hand corner of the MIF board LEIITTTTTTTTTTTTTTPPTPPTR HIE n PEPPE Reconnecting pm MZ Str six pin power w iy en zm a i md connector 377 k qual Step 7 Replace The Top Cover Assembly Replace the top cover assembly taking care not to over torque the screws see page 27 37 38 5 Spare Parts Spare parts along with part numbers are listed in the tables that follow All transducers and accessories are latex free unless indicated otherwise in the tables below Exchange Parts M2720 69030 1453563474101 M2720 60030 453563473001 Base station without transducers WMTS M2720 69031 453563474111 M2720 60031 453563473011 Base station without transducers ISM M2720 69032 453563474121 M2720 60032 453563473021 Base station without transducers Japan 00 2 45356347021 for example for Norway Singapore 4 M2726 69001 453563474421 M2726 60001 453563474381 Cordless US transducer USA Australia 4 Cordless ECG transducer USA Australia M2727 69004 453563474531 M2727 60004 453563474491 Cordless ECG transducer Japan See Antenna and Base Station Part Numbers on page 41 39 Non Exchange Parts M2720 67701 453563474091 M2720 64002 453563474071 M2720 03
57. is still displayed the DECG adapter cable may be defective Replace the adapter cable If the problem persists replace the transducer The transducers are sealed and are NOT repairable In MECG Mode Ensure that the ECG transducer is registered to the base station 1s showing a bed label and has a good RF link to the base station 2 Attach the MECG adapter cable M1363A to the red color coded socket on the transducer 3 MECG values are displayed on the maternal LCD display according to fetal monitor specification or annotated on the recorder strip 70 4 EITHER Attach electrodes to the M1363A adapter cable and apply the electrodes to the skin for example on the wrists OR Attach the M1363A adapter cable to a patient simulator Note We do not recommend the use of a specific patient simulator The use of a patient simulator does not allow checking the specification of the ECG Functionality it allows only a check of general function Result You should see MECG values displayed on the maternal LCD display or annotated on the recorder trace If the test results are not as outlined above repeat the test with another ECG transducer If this does not solve the problem The MECG adapter cable may be defective Replace the adapter cable and repeat the test Check that the base station is properly connected to the fetal monitor There is likely to be an RF related problem Check for frequent mode annotations on
58. ith the requirements of the system standard IEC EN 60601 1 1 Compliance is checked by inspection testing or analysis as specified in the IEC 60601 1 1 or in this book Medical electrical equipment must comply with the requirements of the general standard IEC EN 60601 1 its relevant particular standards and specific national deviations Non medical electrical equipment shall comply with IEC and ISO safety standards that are relevant to that equipment Relevant standards for some non medical electrical equipment may have limits for enclosure leakage currents higher than required by the standard IEC 60601 1 1 These higher limits are acceptable only outside the patient environment It is essential to reduce enclosure leakage currents when non medical electrical equipment is to be used within the patient environment WARNING Do not connect any devices that are not supported as part of a system System Example This illustration shows a system where both the medical electrical equipment and the non medical electrical equipment is situated at the patient s bedside Non Medical Devices Medical Devices Personal Computer Avalon CTS Key Power cables Data cables _ Fetal Monitor Q x e WARNING Any non medical device placed and operated in the patient s vicinity within a distance of 1 5m from the patient s bed must be powered via an approved separation device for example an is
59. l If not what seems abnormal about it What warning indicators are on Question the User Determining exactly what the user is complaining about can be difficult RF signals are subject to interference and are inherently less reliable than signals passing through cables Troubleshooting a cordless system is therefore more difficult than a wired system and requires special equipment and techniques The following checklist will assist you when questioning the user to gather data helpful for technical support If you observed problems during system operation confirm they are problems of which the user is complaining Has the system always had these problems or are they a recent development Is the symptom occurring on one channel some channels or all channels Is the symptom occurring in a specific area or place Is the symptom continuous or intermittent How long does the symptom last How often does the symptom appear Does the symptom only occur at specific times Does the symptom have quiet and noisy periods y q y 61 Area of Reach The effective operating range or the area of reach of the system will vary depending on the geographical and constructional characteristics of the building where the system is installed We recommend that you define the effective operating range prior to putting the system into operation If the area of reach is not sufficient using the stand
60. metal cart or other RF absorbing material then place the antenna externally by using the Antenna Extension Mounting Kit M1361A Option 1AA to increase the range Check the orientation of the antenna In general the antenna provides the greatest range when it is positioned vertically If the area of reach is still insufficient consider installing an antenna system When the Standard Configuration is Unsuitable The standard configuration with free base station channel search may be unsuitable if There are other telemetry or RF systems installed in the hospital There are multiple more than ten stand alone Avalon CTS systems There are other sources of RF interference for instance broadcasting stations microwave devices and wireless temperature sensors You connect the Avalon CTS to an antenna system There are country specific regulations requiring special configuration in Japan for example or your country requires a Multi Region base station Japanese Systems Transducers must use fixed frequencies They are initially shipped from the factory with no frequencies assigned to them During installation they are initialized and their frequencies are set See also Transducers for Japan on page 66 10 Multi Region Base Station For countries requiring the Multi Region base station for example Norway and Singapore the receiver in the base station 1s disabled before it leaves the factory The
61. n Code Log 72 All detected hardware and software internal errors generated by the base station and the transducers are logged in an internal log file residing in the EEPROM The errors are mapped to a two digit hexadecimal Factory Information Code FIC The FIC is stored in the EEPROM with the oldest code at the top of the list and the newest at the bottom The contents of the FIC log require no interpretation The log file can only be read using the Service Support Tool via the service port The log can be saved to a file and the file returned to the factory for debugging see the Service Support Tool Help for details The log can only be cleared manually by using the keys on the base station see Chapter 8 Changing Settings 8 Changing Settings There are four classes of settings for individually configuring the Avalon CTS Bed Label setting refer to Instructions for Use C Configuration settings refer to Instructions for Use F Function settings A Action settings The C and F settings can be set using a PC with the Service Support Tool installed This is the recommended method manually using the keys on the base station The A settings can only be set manually using the keys on the base station Configuration Settings The Instructions for Use describes how to manually change the theft protection level C1 theft protection alert volume C2 key click volume C3 audible alert volume C
62. nge 150 kHz to 80 MHz the recommended separation distance in meters d is found by the following equation d gt JP For a compliance level of 3 0 Vrus VI 0 5 MHz 1 6MHz Medium Wave AM 0 1 V 1 003 MHz d 35 0 P radio stations Key d Recommended separation distance in meters m P maximum output power rating of the transmitter in watts W according to the transmitter manufacturer V1 Tested compliance level in Volts for the Conducted RF Immunity test IEC 61000 4 6 86 Table 3 Note The device meets the compliance level of 3 0 V m according to IEC 60601 1 2 for most of the specified test frequency range However within the frequency ranges specified in this table there are some frequencies at which the immunity level is below the IEC 60601 1 2 test level Within each frequency range the worst case immunity level is given Over the frequency range 800 MHz to 2 5 GHz the recommended separation distance in meters d is found by the following equation 3 0 For a compliance level of 3 0 V m d y AP d 1 2uP Over the frequency range 800 MHz to 2 5 GHz the recommended separation distance in meters d is found by the following equation J 22 JP For a compliance level of 3 0 V m 3 0V 270 MHz 320 MHz Commercial radio 1 1 V Q 277 499 MHz service for example aircraft radio 3 0 V 890 MHz 960 MHz Commercial radio 0 1 V 925 010 MHz service for example GSM cell phones WLAN
63. nna Checking Contacts If the transducer cannot be registered to the base station or you suspect that the transducer is not behaving normally while it is docked check that the spring loaded charge communication contacts are clean and free of dirt and ultrasound gel Check that the springs function correctly by applying pressure with a finger on the contacts The contacts should offer some resistance deflect and return to their normal position if they do not then the top cover should be renewed see Replacing the Top Cover Assembly on page 21 Checking the Fetal Monitor If parameter measurements are not possible first check that the system is connected correctly to the fetal monitor using the appropriate interface cable as described in the technical specifications Is the mode annotated on the recorder trace or does it appear on the displays If not check that the interface cable is properly connected and that the cable locks are securely fastened Also ensure that the fetal monitor s recorder is switched on and check and if necessary replace the power cord RF Problems An RF problem can be summarized as a loss of monitoring capability due to signal corruption in the RF link transmitter to antenna to receiver A lack of parameter measurements or the inability of the transducer to reach the registered ready state may indicate an RF related problem A problem is likely to be an RF problem if it causes any of the following conditio
64. ns Weak or intermittent signals or signal loss see also Area of Reach on page 62 Interference see also RF Interference on page 63 The most likely reason for RF problems is a missing or inoperative antenna Check that it is properly connected to the base station If the antenna is properly connected and the problem persists then follow the RF troubleshooting operations in this chapter starting at Gathering Data on page 61 through Transducers with Fixed Frequency on page 66 Carrier to Noise Ratio 60 At any time the performance of the RF reception of a cordless system is dependent on two factors The signal strength of the desired or carrier signal The power level of any background RF activity or noise at the same frequency In order for the cordless system to receive the RF signal without errors corrupted or invalid data the carrier power level must be significantly above the power level of any background noise If data corruption occurs it indicates that at that time the carrier to noise ratio CNR was too low When RF data corruption occurs the most obvious symptoms are signal loss degradation of the area of reach or US noise The CNR can drop below the critical level for one or both of the following reasons Low signal the signal strength of the carrier is lower than expected Interference the background noise level at the receiver frequency is higher than expected T
65. nsducers The transducer has a serial number of zero not Assign a valid serial number to the transducer by using a valid number and error E5 is displayed on the the Service Support Tool with a valid access code see base station Service Support Tool Help Two transducers have the same serial number Change the serial number of one of the transducers and error E5 is displayed on the base station by using the Service Support Tool with a valid access code see Service Support Tool Help or replace one of the transducers with one from another base station Two or more transducers use the same frequency Reasons here is more than one fixed frequency base Change the base stations base frequency and or station with the same channel spacing the channel spacing see Service Support Tool Help OR OR There are two or more transducers Assign different fixed frequencies to each programmed with the same fixed frequency transducer see Service Support Tool Help General incompatibility for example an ISM Ensure hardware and software compatibility band transducer is being used with a WMTS band receiver Communication error always results in an Communication errors cannot be checked using the inoperative transducer Service Tool 1 Check contacts see page 62 2 Reset the system see page 57 3 If reset fails replace the transducer 4 If problem persists replace the base station Is the transmitter out of
66. ntaining a minimum distance between portable and mobile RF communications equipment and the device as recommended below according to the maximum output power of the communications equipment 88 A Removing and Replacing the Transducer Battery Correct use A Incorrect use LAY Recycle according to local laws CAUTION NEVER immerse a transducer in liquid if the battery drawer is open or has been removed Check the condition of the drawer before refitting and verify that it is fully closed before use 5 4 F v Ri x1 Use only this tool to open drawer Central insertion point unmarked New battery Old battery 89 90 Removing and Replacing the Transducer Belt Button Broken Knob oy Dispose of item gt CAUTION NEVER immerse a transducer in liquid if the belt button has been removed or is loose broken or damaged M2720 64002 Replacement Belt Button Kit Contents 92 C Avalon CTS Frequency Table For multiple installations of the Avalon CTS it is useful to keep a record of the frequency details of each Contact Philips Support before changing the channel spacing system 95 94 Index A A settings 73 accessories 40 action settings 77 clearing FIC 77 displaying software revision 77 antenna extension mounting kit 8 ISM band 40 mixed systems 13 specifications 13 system guidelines 12 system installation and site planning 12 WMTS band 40
67. olation transformer If the personal computer or any other non medical electrical device is situated outside the medically used room you must take measures to reduce leakage currents such as providing an additional protective earth a non conducting enclosure or a separation device We highly recommend using a separation device whenever you connect non medical electrical equipment Regular Preventive Maintenance The care and cleaning requirements that apply to the Avalon CTS and the monitoring accessories are described in the Instructions for Use This section details the periodic maintenance recommended for the base station transducers and accessories Mechanical Inspection All rear panel connections must be tight Check all exterior housings for cracks and damage Check the condition of all external cables especially for splits or cracks and signs of twisting If serious damage is evident the cable should be replaced immediately Check that all mountings are correctly installed and secure Refer to the instructions that accompany the relevant mounting solution Check that the protective earth cable is properly and securely connected Visual Check Ensure there are no cracks in the transducer housing Make sure the battery drawer fits properly into the transducer housing and that the sealing lip is in good condition Inspect the LCD window and if there is water or condensation behind the window replace the transducer On the EC
68. on 16 receiver board 16 removal 33 replacing 35 regular maintenance 51 repair strategy 1 2 replacing ventilation button 91 RF interference 63 broadband 64 narrowband 63 RF receiver 16 RF CPU hardware 17 S safety tests instrument safety test 50 performance tests 47 Index ii power on test 47 S2 protective earth test 48 S6 enclosure leakage current test 2 49 visual inspection 47 when to perform 46 self test 44 Service Support Tool excluding frequencies with 65 reading battery check 55 scanning available frequencies 64 setting fixed frequencies 65 settings action 73 changing manually 73 changing with Service Tool 73 configuration 73 function 73 key click 73 slot interface transducer 16 software revision displaying 77 software upgrades 79 spare parts exchange 39 non exchange 40 specifications 81 2 antenna system 13 AUX frontend 84 base station 81 battery 82 ECG frontend 84 environmental 81 frontends 83 general 81 monitor interface 82 receiver unit 81 Toco frontend 83 transducer 82 US frontend 83 storage temperatures 5 storage time for transducers 82 supplies 40 symbols on system 3 antenna input 4 attention 3 Class 2 radio egpt 4 equipotential terminal 3 IP68 4 IPX1 4 power stand by indicator 3 switch 3 prot earth terminal 4 service socket 4 type CF eqpt 4 T temperatures operating 5 storage 5 testing after repair 2 ECG transducer 69 safety 45 Toco transducer 68 transducers 67 ul
69. operates within specifications at ambient temperatures between 0 C and 45 C 32 F and 113 F Ambient temperatures that exceed these limits can affect the accuracy of the system the transmitter radio frequency transmission and can damage the components and circuits The system can be stored at ambient temperatures between 20 C and 60 C 4 F and 158 F The transducers are watertight to a depth of 0 5 meter 1 64 feet rated IP 68 The base station 1s protected against vertically falling water drops only rated IP X1 according to IEC 60529 General Description Refer to the nstructions for Use for operating information for the base station and the transducers It includes descriptions of the installation and setup of the system and modes of operation Mounting Solutions You can mount the Avalon CTS as follows na standard cart drawer The base station with docked transducers fits into Philips Carts CL CX and CM Note if you mount the base station in a cart or in such a way that the standard antenna cannot be attached directly to the base station or does not provide sufficient transmission range use the antenna extension mounting kit M1361A Option 1AA On top of carts desks or other flat surfaces using the mounting brackets na wide variety of situations using the GCX mounting adapter for mounting the base station order directly from GCX part number PH 0042 80 On top of Series 50 IX XM XMO fetal monitors
70. phase of the self test Look for LEDs Magnets missing segments of the two digit display defective lamps LED segments of the two digit display that are flicker or are darker or lighter than normal indicates MIF board malfunction and hence base station exchange If the problem persists replace the top cover or exchange the base station as appropriate If the display window breaks or is scratched and no longer readable renew the top cover see Removing the Top Cover Assembly on page 20 and Replacing the Top Cover Assembly on page 21 If any of the LEDs fail to light when they should reset the system see System Reset on page 57 If the problem persists renew the top cover assembly see Removing the Top Cover Assembly on page 20 and Replacing the Top Cover Assembly on page 21 If you see something unusual in the transducer s LCD or if you pick up and gently shake the base station and you can hear something moving inside then it is likely that one or more of the three magnets has been dislodged To investigate further 1 Remove the top cover assembly see Removing the Top Cover Assembly on page 20 2 Try to refit the magnet it should snap back into place 3 If the magnet does not snap into place then the plastic lugs that hold the magnet are probably broken or damaged If this is the case renew the top cover assembly see Replacing the Top Cover Assembly on page 21 Factory Informatio
71. plicable to the country of the installation For safety test procedures see the operation instructions of the safety tester used and follow any local regulations If you use the Metron safety tester the Metron Report should print results as detailed in this chapter along with other data For information and ordering guides for Metron products contact Metron AS Vegamot 8 N 7048 Trondheim Norway www http www metron biomed com Perform Safety Tests This table tells you when to perform specific safety tests See page 47 for test details Table 1 M2720A When to perform safety test blocks Installation The product is customer installed For installation instructions refer to the Instructions for Use for your monitor Preventive Maintenance Preventive maintenance is the responsibility of the customer see page 51 Repair This Service Guide contains repair instructions for the Avalon CTS Upgrade For upgrade information refer to Upgrades on on page 69 Combining or Exchanging System Components All other service events Perform Visual Power On Performance and Safety test blocks see Table 2 Perform Visual test block see Table 2 Perform Visual Power On and Performance test blocks see Table 2 and whenever power supply or fuses are removed replaced perform Safety test block Perform Visual Power On Performance test blocks see Table 2 Perform the System Test see Table 2 and System
72. posable abdominal belts case of 100 PC service cable for Service Support Tool Antenna and Base Station Part Numbers Frequencies for medical telemetry devices are not yet harmonized Consequently frequencies vary according to country specific regulations and are subject to change WMTS Band 0950 2028 453563044001 M2720 69030 453563474101 M2720 60030 453563473001 internal code 214 ISM Band 0950 2029 453563044011 M2720 69031 1453563474111 M2720 60031 453563473011 internal code 212 Japanese Band 0950 2029 453563044011 M2720 69032 453563474121 M2720 60032 453563473021 internal code 215 Multi Region Base 0950 2029 453563044011 M2720 69034 451261002071 M2720 60034 451261002061 Station ISM Band uses 212 hardware 41 42 6 Preventive Maintenance and Safety This chapter contains maintenance and safety information for the Avalon CTS and accessories All checks that require the instrument to be opened must be made by qualified service personnel Contact your local Philips representative if you wish safety and maintenance checks to be carried out by Philips personnel To ensure proper functioning of your system you must adhere to the standards described in this book for m Cleaning m Performance assurance checks system self test parameter test m Safety tests safety test blocks instrument safety test system test m Accessory testing transducer checks patient modul
73. r LCD e Base Station communication EEPROM e FLASH download port e Clock generator e Power supply and battery charger e Modulator e RF transmitter Boards M2725 66501 M2726 66501 o NEUES E SE SE Se AO 7 M2727 66501 parameter frontends modulation signal wave FSK RF transmitter odulator see separate description gain control frequency control port FLASH download frontend control CPU ower management micro controller LCD power supply and battery base station Clock EEPROM charger communication generator G ue uu us 1l x e we Figure 2 Transducer Block Diagram 17 Base Station Communication An active base station communicates with docked transducers to check the correct transducer type serial number to program the RF frequency to initiate test cycles and to check the current battery status Power Supply and Battery Charger A Lithium Ion Li Ion battery powers the transducer Batteries are charged whenever a transducer is docked in an base station connected to AC power Charge power is transferred by the spring loaded two pin charge contacts Communication between the base station and the transducer processors is also done using these contacts An intelligent Li Ion charging circuit in the transducer controls the battery management See page 72 for battery char
74. rements for a System 50 System Example 51 Regular Preventive Maintenance 51 Mechanical Inspection 51 Visual Check 52 Toco Ventilation Belt Button 52 Testing the Ventilation Membrane 52 Battery Check 53 Starting the Battery Check 53 Stopping the Battery Test 54 Stages of the Battery Check 54 Reading Battery Check Data Using the Service Support Tool 55 Battery Exchange 55 7 Troubleshooting 7 System is Completely Inoperative 57 System Reset 57 Common Problems 58 Troubleshooting a Cordless System an Overview 59 Checking Contacts 60 Checking the Fetal Monitor 60 RF Problems 60 Carrier to Noise Ratio 60 Gathering Data 61 Observe System Performance 61 Question the User 61 Area of Reach 62 Range Definition 62 Using the Base Station 62 Using the Service Support Tool 63 RF Interference 63 One Channel or Narrowband Interference 63 Broadband Interference 64 Guidelines for Channel Frequency Configuration 64 Scanning the Available Frequency Range 64 Excluding Frequencies 65 Base Station with Fixed Frequency 65 Transducers with Fixed Frequency 66 Transducers for Japan 66 Multi Region Base Station 66 Delivery Status 66 Installation 66 Testing Transducers 67 Ultrasound Transducer Electrical Check 67 TOCO Transducer Electrical Check 68 ECG Transducer Electrical Check 69 In DECG Mode 69 In MECG Mode 70 Troubleshooting the Top Cover 71 Function Buttons 71 Display Window 72 LEDs 72 Magnets 72 Factory Information Code Log 72 8 Changin
75. requency Press w or A to change the setting Press to accept the new setting and return to normal operation Selecting the Channel Frequency Spacing See also page 54 Consult Philips Support before changing the channel frequency spacing The Service Support Tool is required to set the base frequency The channel frequency spacing can be set using the Service Support Tool see Service Support Tool Help for details or on the base station as follows Press the two arrow keys y a simultaneously The bed label blinks the two digit display goes blank Press A three times to enter the F settings F flashes in the display Press F1 appears and the 1 blinks Press faa twice to increment F setting to 3 Press Two digit display shows the current setting Channel spacing can be set between 0 and 8 inclusive 3 0 default spacing 3 1 1 x 12 5 kHz 12 5 kHz 3 2 2 x 12 5 kHz 25 kHz 3 n n x 12 5 kHz and so forth 75 Press to accept the new setting and return to normal operation 76 Action Settings The action settings can be changed only on the base station To change the action settings follow the step by step instructions Displaying the Software Revision Base station display looks like Press the two arrow keys w a simultaneously The bed label blinks the two digit display goes blank 9 Press 4 twice to enter the A setting
76. requency LF signal signal filtering and radio frequency RF channel management The main CPU communicates with the transducers While charge power is on a serial communication link is established between the base station and each docking slot Human Interface Board The Human Interface HIF board provides the user interface and the display indicators keys and the slot charging contacts are all located on this board Power Supply The power supply is a wide range input swtching unit with an output of 48V It is located on the chassis assembly Slot Control and Monitor Interface Board Hardware 16 The Monitor Interface MIF board provides the interface to the fetal monitor as well as the communication interface to the transducer slots Power conversion is performed by a DC DC converter The digital active parts of the human interface also reside on this board The MIF board consists of the following functional blocks DC DC Converter the 48V DC input for the DC DC converter comes from the primary AC DC converter Since the 48V DC voltage is sufficiently stabilized two fixed pulse width step down transformers are used to transform the high voltage down to the required 3V 5V and 12V post regulated for accuracy The 12V supply is mainly used for battery charging and you can access this voltage at the charge contacts The fuse on the MIF board are not replaceable and if it blows the board must be replaced If there
77. s A flashes in the display Press AT appears and the 1 blinks Press faa once to increment A setting to 2 Busse Two digit display shows Transducer display if Base station display docked shows sequence the software revision in the format A XX XX as a sequence For example revision A 01 00 is shown in the following way This cycles for 30 seconds before the display reverts back to normal Press the two arrow keys a simultaneously The bed label blinks the two digit display goes blank Press a twice to enter the A settings A flashes in the display 77 78 Press The FIC log is cleared and the display reverts to normal Press the two arrow keys y a simultaneously The bed label blinks the two digit display goes blank Press a twice to enter the A settings A flashes in the display H Press Cc A1 appears and the 1 blinks n I i Press twice to increment A setting to 3 R Press Base station display shows two segment bars for the duration of the check 9 Upgrades The software of the base station and the transducers can be upgraded by a software download from a PC The base station has a service socket for connection to a PC s standard RS232 serial port You will need Industry standard PC Service Support Tool on Fetal Monitoring Documentation CD ROM PC interface
78. se automatic free channel search but excluding the offending frequencies see Excluding Frequencies below using the Service Support Tool 3 If there are many telemetry devices and or multiple Avalon CTS installations in the hospital we recommend that an RF plan is implemented with different frequency ranges allocated to different types of telemetry In this case the base station should be set to fixed frequency operation see Base Station with Fixed Frequency on page 65 in conjunction with excluded frequency ranges 4 If there are only a small number of available frequency channels consider using fixed frequency transducers see Transducers with Fixed Frequency on page 66 If dedicated frequencies are required use fixed frequency transducers Scanning the Available Frequency Range 64 If interference is evident or suspected the first step is to use the Service Support Tool to perform a scan of the available frequency range to identify interferers and locate occupied frequency ranges This informs you which frequencies you may need to exclude To do this you need An industry standard PC with the Service Support Tool software installed supplied on Documentation CD ROM M1350 9150T PC interface cable for the Service Support Tool M1360 61675 Refer to the Service Support Tool Help for details Excluding Frequencies Having established the occupied frequency ranges by scanning the available frequency range
79. see above you can exclude up to four frequency ranges by using a PC installed with the Service Support Tool Refer to the Service Support Tool Help for details Base Station with Fixed Frequency There are instances when free channel selection is not desired and the setting of fixed frequency for the base station is preferable or necessary For multiple cordless telemetry installations in the same hospital especially when connected to an antenna system the hospital should implement an RF plan Each system adult telemetry fetal telemetry Avalon cordless should have a fixed frequency reserved for it and this should be documented in a suitable way for example on an RF chart The setting of fixed frequencies is done using the Service Support Tool Refer to the Service Support Tool Help tor details The frequency of a slot is separated from that of another slot from the same base station by channel spacing The base station 1s shipped with a default channel spacing appropriate for the country in question and normally this requires no adjustment If it there are transducers working close to each other from the same base station and the transducers are interfering with each other exhibited for example by a noise on the ultrasound channel you can make the channel spacing wider only after consulting Philips Support You can do this by changing the F settings using the Service Support Tool refer to the Service Support Tool Help or m
80. splay wander up and down from top down This indicates that fast battery discharge is in progress 1 Battery charge cycle The battery symbols of slots 1 and 2 blink indicating that battery charging is in progress The right hand horizontal segment bars of the two Transducers digit numeric display wander up and down from remain unprogrammed bottom up This indicates that battery charging is in shut down if removed ie 3 Battery capacity display e Transducer display shows the estimated operating time when the discharge time is over The estimated operating time of the battery in r hours alternates with the symbol H the battery is empty In this example the battery of Transducer 2 should be changed as the estimated operating time is below the minimum 16 hours After the battery check has finished the estimated operating time remains displayed until you press for more than one second or switch the base station to stand by Reading Battery Check Data Using the Service Support Tool The results of the last battery test performed are stored in the base station s EEPROM There is no time stamp This data can be read using the Service Support Tool and this can be useful for example if the results of the battery check were not noted Refer to the Service Support Tool Help for details Battery Exchange If the battery requires replacement use the battery kit M2720 64001 This contains a
81. stem Perform the system test according to IEC See Safety Test 2 and Safety Test See Safety Test 2 60601 1 1 if applicable after combining 3 and Safety Test 3 equipment to form a system 47 Description of Applicable Safety Tests Abbreviations AP Applied Parts IUT Instrument Under Test GND Ground PE Protective Earth S 1 Protective Earth Test Test to perform The protective earth test measures impedance of Protective Earth PE terminal to all exposed metal parts of Instrument under Test IUT which are connected to the Protective Earth PE for safety reasons Normally it includes the wiring in the mains cable max 200 mOhm A test current of 25 Amps is applied for five to ten seconds It is recommended to flex the main cable during the test to identify potential bad contact or damage to the earth wire Safety Test according to IEC 60601 1 Clause 18 Report the highest value Instrument under test Insulating pad 50 Hz 25 A or 1 5 Ir If equipotential connection present measure also with yellow green E P conductor connected S 2 Enclosure Leakage Current Test Normal Condition NC 48 Test to perform The enclosure leakage current normal condition is applicable to Class 1 and 2 equipment type B BF and CF Applied Parts The test measures leakage current of exposed metal parts of the Instrument Under Test it tests normal and reversed polarity For Type BF and CF Applied Parts the
82. t of individual components on the boards is not supported and should never be attempted For any problem related to connecting the base station to an antenna system refer to the M2600A Telemetry Systems Service Training and Reference Guide For tests that you are required to perform after repairs refer to When to Perform Safety Tests on page 38 Pre Installation Considerations There are a number of factors you need to consider that influence how you install the Avalon CTS When is the Avalon CTS Customer Installable The Avalon CTS is intended to be customer installable under the following conditions The system in its standard configuration is an out of the box standalone system delivered with automatic frequency allocation and is intended to be used with the standard antenna supplied giving a line of sight operating range up to 100m 300ft There are less than ten stand alone systems in the institution Connection to an antenna system is not planned No other telemetry devices are used in the institution that can influence or be influenced by the Avalon CTS There are no other sources of RF interference that influence the operation of the Avalon CTS There are no country specific regulations requiring special configuration Installation should be carried out by qualified technical personnel If you need to mount the Avalon CTS or use the antenna extension mounting kit M1361A Option 1AA see page 8
83. t the multipin connector of the ribbon cable from the MIF board Pull straight up to avoid bending the pins The top cover assembly is now free of the chassis assembly A pros sun pasne y i S Ribbon cable connector Replacing the Top Cover Assembly The serial number appears initially in two places on the base station on the rear of the top cover assembly and on the bottom of the metal chassis A replacement top cover does not carry a serial number Ensure all items are replaced in the top cover assembly 2 Reconnect the multipin ribbon cable connector to the socket on the MIF board Reconnect ribbon cable connector 27 3 Important Reconnect the ESD ground wire spade connector to the terminal on the chassis ESD ground Spade connector 4 Place the front cover back to its normal position 5 Holding both assemblies together carefully place the unit upside down preferably on a soft surface to prevent scratching or other damage Screw locations 6 Make sure the screw holes in the metal chassis align with the screw mountings in the top cover moulding CAUTION When replacing the front cover do not over torque the screws Excessive torque may damage the plastic screw mountings 7 Drive in the six screws that hold the front cover and chassis assemblies together using a 1 10 Torx driver Changing Fuses There are two versions of power supply the Celestica version earli
84. the fetal monitors recorder to confirm this Refer to the information on RF troubleshooting in this chapter and to the chapter Troubleshooting in the Instructions for Use If the problem persists replace the transducer The transducers are sealed and are NOT repairable Troubleshooting the Top Cover Function Note that malfunction of the top cover can be due to MIF board failures In this case repair is effected by exchanging the base station If after opening the top cover or following a repair the display all lamps and all function buttons fail to work check the ribbon cable connection to the MIF board The top cover contains the following items Charge communication contacts see Checking Contacts on page 60 Function buttons Display window LEDs Magnets Buttons If any of the buttons fail to function reset the system see System Reset on page 57 If an individual button fails to work try to solve the problem by renewing the top cover see Removing the Top Cover Assembly on page 20 and Replacing the Top Cover Assembly on page 21 If all the function buttons fail to work then this is likely to be a MIF board malfunction a repair being effected by exchanging the base station 71 Display Window If the base station display does not function or you suspect that it is not working normally reset the system see System Reset on page 57 and check the lamps during the lamp test
85. the membrane is functioning correctly 52 5 If the pressure does not fall rapidly then the ventilation membrane is congested Replace the belt button see page 91 or the instruction sheet Removing and Replacing the Belt Button that accompanies the belt button replacement kit part number M2720 64001 containing three replacement buttons aspecial tool to remove the button the instruction sheet Battery Check If you suspect that battery performance is below normal expectations and especially if the operating time consistently falls below 16 hours charge the batteries Batteries that have a reduced capacity can still be used even though they will have a shortened operating time but a replacement should be considered as soon as possible When battery performance is suspect even after a normal charge cycle run the battery check The Battery Check is a diagnostic procedure for determining the operating time of a fully charged battery In normal operation the battery will rarely approach a state of full discharge typically only a small proportion of the total capacity will be used Even a battery with suspect performance will still have a relatively high capacity when it is freshly charged As a result the test takes approximately eight hours For the duration of the test the Avalon CTS cannot be used To limit this down time the test automatically stops if the batteries have reached the minimum operating time
86. tion are then processed and displayed by the fetal monitor 3 Check the values displayed by the fetal monitor to get an overview of the condition of the entire system The following table specifies the signals that are generated during the test As the mode of the ECG transducers is unknown to the base station as it is configured outside of the base station an ECG transducer is always mapped to the MECG mode This avoids potential mode errors 4 To stop the test release the T key Expected signals generated during the system test Value on fetal monitor 190 bpm 170 bpm 200 bpm An IUP reading LED display Recorder Note Ensure appears on the OBMS IF t fetal monitor IUP there IS NO measurements are US I not currently transd cer in Signal with 30 units supported slot 3 Error amplitude range and 20s Disregard any 9 will appear period duration measurement you get Fetal monitor speaker Artificial HR signal NA NIA click Test tolerance 2 5 bpm 2 5 bpm 10 period duration 2 5 bpm Test ECG transducers without the adapter cables attached Signal is variable Jitter should normally be within 2 5 bpm However this could possibly be higher due to external factors such as interference or the environment On slot 1 the jitter can be higher than on slot 3 Testing Alarms Details of how to test alarms is given in the Instructions for Use Safety Tests This section defines the t
87. trasound transducer 67 theory of operation 15 19 Toco transducer electrical check 68 69 visual check 69 tools for disassembly 26 top cover assembly removal 26 replacing 27 troubleshooting 71 transducer battery 18 block diagram 17 communication 16 communication with b station 18 detection 16 ECG 17 electrical check DECG 69 electrical check MECG 70 frontend hardware 18 hardware overview 17 power supply 18 slot interface 16 specifications 82 testing 67 Toco 17 electrical check 68 frontend hardware 18 types 17 US 17 electrical check 67 frontend hardware 18 troubleshooting 57 72 area of reach 62 checking contacts 60 common transducer problems 58 connections 60 cordless system 59 inoperative system 57 RF interference 63 RF types 60 system reset 57 top cover 71 display 72 function buttons 71 LEDs 72 magnets 72 using Service Tool 63 U ultrasound transducer electrical check 67 upgrades software 79 using Service Tool 79 V ventilation button 91 W warnings 3 WMTS band 9 83 Index iii
88. ty 110 dBm 30dB Signal to Noise Ratio Image Rejection Image Rejection gt 80dB Ranges Frequency Range See Frequency options Receiving Range line of sight approximately 100m 300 ft 81 Water Ingress Protection Code IP X1 protection only against vertically falling water drops Toco Output Accuracy 0 5 per 100 mmHg not including transmitter Offset 5 Units not including transmitter Voltage Range US Voltage range 4mVpp to 4Vpp ECG Voltage range 0 1Vpp to 4Vpp Transducers er Battery Life gt 500 charge discharge cycles with new battery at 25 C 77 F Transducer Storage Time 2 1 year at 25 C 77 F battery full 2 1 month at 25 C 77 F battery empty Recharging Time 100 charged lt 3h 66 charged lt 1h Forced discharge current approx 45mA Discharge leakage current in 20 HA typical 70 uA max shutdown Vbat 3V 25 C Degree of Protection Against Type CF Electrical Shock Nominal RF Output Power 12 dBm x 6 dB ERP Carrier Frequency Range See Frequency Bands Minimum Frequency Band Span 10 MHz Per Option Channel spacing 25kHz or 12 5kHz 82 Modulation type Analog frequency modulation frequency range depends on frontend board Digital SKT kHzand24kHz I Frequency Bands 420 to 430 MHz of which the following sub ranges Japan are used Band 1 420 0625 to 421 0125 MHz Band 2 424 5000 to 425 9500 MHz Band 3 429 2625 to 429 7125 MHz 433 0
89. ucer also resting on the surface see Figure 7 You should see a marked increase in the value of the Toco reading in the Toco display Toco display 20 Toco display 40 50 r Z 0k Z Z 2 Z 2 Z 45 Z Z 4 6 2 6 ooa x So m 4 4 P G F 20 SC 7 or a LTITHCD 4 d E uuu AS SEAL y 0 47 so s p Z E Li Es y r r y Eu F Es Li n Es Kx ze y D z E a P mo y 0 0 4s 6 4 wc c 2 ros rco y m 8 2 2 2 Z 2 7 7 2 2 2 o 2 2 2 22 7 2 ro vy v Figure7 Checking a Toco Transducer If the test results are not as outlined above repeat the test with another Toco transducer If this does not solve the problem Check that the base station is properly connected to the fetal monitor There is likely to be an RF related problem Check for frequent mode annotations on the fetal monitor s recorder to confirm this Refer to the information on RF troubleshooting in this chapter and to the chapter Troubleshooting in the Instructions for Use If the problem persists replace the transducer The transducers are sealed and are NOT repairable ECG Transducer Electrical Check Carry out the elctrical check on the ECG transducer in both DECG annd MECG mode In DECG Mode Ensure that the ECG transducer is registered to the base station is showing a bed label and has a good RF link to the base station 2 Attach the DECG adapter cable M1362B to the red color coded socket on the transducer 3 Ensure t
90. ucer battery performance suspect Charge the battery If battery performance is still not satisfactory after charging carry out the battery check see page 43 If necessary change the transducer battery see page 75 US acoustical signal is noisy indicating To solve US interference problems interference n the case of a base station and transducers using automatic channel search bring the transducer back to the base station and register it to a new frequency by docking it in an appropriate slot In the case of a base station with fixed frequencies increase the channel spacing between the transducer slots see Base Station with Fixed Frequency on page 65 In the case of transducers with fixed frequencies change the frequency and or increase the frequency spacing between transducers see Transducers with Fixed Frequency on page 66 Troubleshooting a Cordless System an Overview Troubleshooting a cordless system presents some unique challenges These arise from several assemblies acquiring signals processing signals and transmitting receiving signals Problems can result from hardware and communications failures or can be RF related In the case of a suspected malfunction it is important to first verify that the malfunction is a genuine failure This can be checked by 59 Resetting the system Checking cleaning the charge communication contacts Checking the fetal monitor and ante
91. ures carried out by the operator that are described in the Instructions for Use Refer to the nstructions for Use for maintenance and troubleshooting procedures that may be performed during normal operation Only qualified service personnel should attempt to install the system disassemble the base station remove or replace any internal assemblies or replace the transducer batteries or belt buttons Who Should Read This Guide This guide is for any qualified technical personnel servicing and repairing the Avalon CTS Cordless Fetal Transducer System You must understand English be familiar with standard medical equipment installation procedures be familiar with current conventional technical terms as used throughout this guide What to Do Next Familiarize yourself with the contents of this guide and the nstructions for Use before attempting to service or repair the system Repair Strategy The Service Support Tool software helps you to determine whether a fault is a hardware software or RF related problem Any maintenance and repair procedures beyond the level covered in the Instructions for Use are limited to unit exchange for the base station the transducers replacement of the top cover assembly including human interface board the power supply including metal chassis two fuses in the power supply the transducer battery the transducer ventilation knob Repair or replacemen
92. without a separation transformer is used the interruption of its protective earthing may result in enclosure leakage currents equal to the sum of the individual earth leakage currents To protect hospital personnel and the patient the cabinet must be grounded Accordingly the base station Is equipped with a 3 wire power cable which grounds it to the power line ground when plugged into an appropriate 3 wire receptacle Do not use a 3 wire to 2 wire adapter with the base station Any interruption of the protective earth grounding will cause a potential shock hazard that could result in serious personal injury Whenever it is likely that the protection has been impaired the base station must be made inoperative and be secured against any unintended operation The patient cable must be positioned so that it does not come into contact with any other electrical equipment Before operation make sure that the base station is free from condensation This can form when equipment is moved from one building to another and is exposed to moisture and differences in temperature Environment Before operation make sure that the base station is free from condensation This can form when equipment is moved from one building to another and is exposed to moisture and differences in temperature Use the system in an environment which is reasonably free from vibration dust corrosive or explosive gases extremes of temperature humidity and so forth It
93. y result in minor or moderate personal injury damage to the product or other property and possibly in a remote risk of more serious injury zz In this book graphical symbols indicators or elements of the base station or transducer a displays depicted in this way indicate that they are blinking Copyright 1995 2004 Koninklijke Philips Electronics N V All Rights Reserved Symbols on the System This attention symbol indicates that you should consult this book and the Instructions for Use and particularly any warning messages Power On Stand by Switch Power On Stand by Indicator Equipotential Terminal This symbol identifies terminals that are connected together bringing various equipment or parts of a system to the same potential This is not necessarily earth potential The value of potentials of earth may be indicated adjacent to the symbol Protective Earth Terminal This symbol identifies the terminal for connection to an external protective earth system Antenna input symbol Service socket symbol This symbol appears on the device adjacent to the CE mark and defines Class 2 radio equipment per Radio and telecommunications Terminal Equipment Directive 1995 5 EC Ingress Protection code according to IEC 60529 Base station is rated IP X1 protection against vertical water drops only Ingress Protection code according to IEC 60529 All transducers are rated IP 68 protection against dust access to ha
94. zardous parts and the effects of continuous immersion in water to a depth of 0 5 meter for five hours Type CF equipment Patient Safety The Telemetry System should only be used by or under the direct supervision of a licensed physician or other health care practitioner who is trained in the use of fetal heart rate monitors and in the interpretation of fetal heart rate traces US federal law restricts this device to sale by or on the order of a physician The base station telemetry receiver is a Protection Class 1 instrument The device complies with the following safety standards EN 60601 1 1990 A1 1993 A2 1995 IEC 60601 1 1988 A1 1991 A2 1995 e EN 60601 1 1 2001 IEC 60601 1 1 2000 e UL2601 1 1997 e CAN CSA C22 2 No 601 1 M90 e JIS T 1001 1992 JIS T 1002 1992 e AS 3200 1 0 1998 The cordless transducers are battery operated devices applied parts patient connectors are Type CF O Protective Earth WARNING Check each time before use that the system is in perfect working order and the base station is properly grounded This equipment is intended for use only within healthcare facilities It is not suitable for use in domestic establishments and in establishments directly connected to a low voltage power supply network which supplies buildings used for domestic purposes Do not use additional AC mains extension cords or multiple portable socket outlets If a multiple portable socket outlet

Avalon CTS - Frank`s Hospital Workshop

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