Philips Avalon CTS M2720A Service Manual
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Philips Avalon CTS M2720A Service Manual

Cordless fetal transducer system
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Avalon CTS
Cordless Fetal Transducer
System
M2720A
S E R V I C E G U I D E
To Purchase, Visit
Avobus.com
4535 643 67821
June 2012
Published in Germany
or call
1-800-674-3655

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  • Page 1 Avalon CTS Cordless Fetal Transducer System M2720A S E R V I C E G U I D E 4535 643 67821 June 2012 Published in Germany To Purchase, Visit Avobus.com or call 1-800-674-3655...

  • Page 3: Table Of Contents

    Environment General Description Mounting Solutions Applying the Velcro Fixing Tape Antenna Extension Mounting Kit Mounting on Philips Carts Mounting on Wooden Carts and Other Flat Surfaces Considerations for Choice of Configuration Frequency Bands Standard Delivery Configuration When is a Different Configuration Needed?
  • Page 4 Functional Description of the RF/CPU Hardware Base Station Communication Power Supply and Battery Charger Modulator RF Transmitter Toco Frontend Hardware Ultrasound Frontend Hardware ECG Frontend Hardware 3 System Interfaces Fetal Monitor Interface Service Interface Compatible Fetal Monitors 4 Disassembly/Reassembly Introduction Removing the Top Cover Assembly Replacing the Top Cover Assembly Changing Fuses...
  • Page 5 Instrument Safety Test System Test What is a Medical Electrical System? General Requirements for a System System Example Regular Preventive Maintenance Mechanical Inspection Visual Check Toco Ventilation/Belt Button Testing the Ventilation Membrane Battery Check Starting the Battery Check Stopping the Battery Test Stages of the Battery Check Reading Battery Check Data Using the Service Support Tool Battery Exchange...
  • Page 6 Ultrasound Transducer Electrical Check TOCO Transducer Electrical Check ECG Transducer Electrical Check In DECG Mode In MECG Mode Troubleshooting the Top Cover Function Buttons Display/Window LEDs Magnets Factory Information Code Log 8 Changing Settings Configuration Settings Function Settings Bed Label Appearance Enabling/Disabling Fixed Frequency Selecting the Channel Frequency Spacing Action Settings...

  • Page 7: General Information

    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.

  • Page 8: Repair Strategy

    1 General Information Repair Strategy 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: •...

  • Page 9: When Are Special Configurations Needed

    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.

  • Page 10: Patient Safety

    1 General Information Patient Safety 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 marking and defines Class 2 radio equipment per Radio and telecommunications Terminal Equipment Directive 1995/5/EC.
  • Page 11 Patient Safety 1 General Information • EN 60601-2-49:2001 • UL2601-1:1997 • CAN/CSA C22.2 No. 601.1-M90 • JIS T 1001-1992 • JIS T 1002-1992 • AS 3200.1.0-1998 The cordless transducers are battery operated devices, with applied parts of Type CF...

  • Page 12: Protective Earth

    1 General Information Protective Earth 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.

  • Page 13: Mounting Solutions

    You can mount the Avalon CTS as follows: • In a standard cart drawer. The base station with docked transducers fits into Philips Carts CL, CX and 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 (M2720A Option K01).
  • Page 14 1 General Information Mounting Solutions Mounting Brackets Contact your local Philips representative for additional cart mounting options. Refer also to the fitting instructions that come with the relevant solution.

  • Page 15: Applying The Velcro Fixing Tape

    Applying the Velcro Fixing Tape 1 General Information 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.

  • Page 16: Antenna Extension Mounting Kit

    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.

  • Page 17: Mounting On Wooden Carts And Other Flat Surfaces

    Considerations for Choice of Configuration 1 General Information 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.

  • Page 18: Standard Delivery Configuration

    1 General Information Considerations for Choice of Configuration Standard Delivery Configuration The Avalon CTS is normally delivered with: • Automatic channel search. • 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.

  • Page 19: Multi-Region Base Station

    Setting Expectations 1 General Information Multi-Region Base Station For countries requiring the Multi-Region base station (for example, Norway and Singapore), the receiver in the base station is “disabled” before it leaves the factory. The correct approved frequency range is then enabled locally during installation using the Service Support Tool.

  • Page 20: Antenna System Guidelines

    The importance of this increases as the antenna system size increases. • Philips Medical 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...

  • Page 21: Specifications

    *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: •...
  • Page 22 1 General Information Antenna System Guidelines To Purchase, Visit Avobus.com or call 1-800-674-3655...

  • Page 23: Theory Of Operation

    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 Figure 1 Base Station Boards...

  • Page 24: Receiver Board

    2 Theory of Operation 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.

  • Page 25: Transducer Hardware Overview

    Transducer Hardware Overview 2 Theory of Operation Transducer Hardware Overview The system has three transducer types: • Toco • US • 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.

  • Page 26: Base Station Communication

    2 Theory of Operation Toco Frontend Hardware 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.
  • Page 27 ECG Frontend Hardware 2 Theory of Operation 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. ECG adapter cables, used with patient modules, are also used for the fetal scalp or adult electrodes.
  • Page 28 2 Theory of Operation ECG Frontend Hardware To Purchase, Visit Avobus.com or call 1-800-674-3655...

  • Page 29: System Interfaces

    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 and Avalon family of fetal monitors with Rel. D.00.00 software or greater. The interface is enhanced to support additional transducer combinations for future fetal monitors.

  • Page 30: Service Interface

    3 System Interfaces Service Interface Signal Details Reserved. IUP Mode (L). 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-FMP on (L) if FMP available. Tele-Fetal movement on (L). MECG Inop.

  • Page 31: Compatible Fetal Monitors

    Compatible Fetal Monitors 3 System Interfaces Compatible Fetal Monitors A list of compatible fetal monitors (including interfaces) is given in the following table. Parameter Monitor / Interface (IF) DECG MECG Toco Comments   M1350x HR 1 HR 1 Only one FHR is transmitted. with M1350-66531 IF ...
  • Page 32 3 System Interfaces Compatible Fetal Monitors...

  • Page 33: Disassembly/Reassembly

    Disassembly/Reassembly • Performance verification: do not place the system into operation after repair or maintenance has been WARNING performed, until all performance tests 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.

  • Page 34: Removing The Top Cover Assembly

    4 Disassembly/Reassembly Removing the Top Cover Assembly There are no boards available individually as replacement parts. In the case of a defective receiver board or MIF 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.

  • Page 35: Replacing The Top Cover Assembly

    Replacing the Top Cover Assembly 4 Disassembly/Reassembly 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 Now raise the cover a little more, and disconnect the multipin connector of the ribbon cable from the MIF board.

  • Page 36: Changing Fuses

    4 Disassembly/Reassembly Changing Fuses Important! Reconnect the ESD ground wire spade connector to the terminal on the chassis. ESD ground spade connector Place the front cover back to its normal position. Holding both assemblies together, carefully place the unit upside down, preferably on a soft surface to prevent scratching or other damage.
  • Page 37 Changing Fuses 4 Disassembly/Reassembly Remove the three screws securing the power supply cover. Boards shown removed for illustration purposes Screw locations Unplug the connector for the power supply cable from the power supply. Remove power supply cable Slide the power supply cover to the edge of the chassis, as shown, to clear the lugs on the chassis. Slide power supply Power supply cover to the outer...
  • Page 38 4 Disassembly/Reassembly Changing Fuses Power supply cover removed Important! Replace the fuses with new fuses of exactly the same type and rating (T1.6A). FREI version CELESTICA T1.6A Fuse version Replace the power supply cover, and secure it with the three screws.

  • Page 39: Changing The Power Supply/Metal Chassis Assembly

    Changing the Power Supply/Metal Chassis Assembly 4 Disassembly/Reassembly Reconnect the power supply cable connector to the power supply. Replace the top cover assembly (see page 29). Changing the Power Supply/Metal Chassis Assembly The power supply and the metal chassis come as one unit (they are not available independently). The power supply cable is reusable, and also comes with the new chassis/power supply assembly.
  • Page 40 4 Disassembly/Reassembly Changing the Power Supply/Metal Chassis Assembly Then remove the two screws (B) for the fetal monitor interface socket using a 6mm socket driver. Screws (B) 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.
  • Page 41 Changing the Power Supply/Metal Chassis Assembly 4 Disassembly/Reassembly Step 3: Removing the Receiver Board First remove the MIF board (see Step 1). Remove the four screws securing the receiver board to the chassis using a T-10 Torx driver. Screw locations Gently lift the front right hand corner of the receiver board, at the same time pulling it forward.
  • Page 42 4 Disassembly/Reassembly Changing the Power Supply/Metal Chassis Assembly Lift left hand side of board to clear screw fixing post Then lift the board clear of the chassis. Step 4: Replace Metal Chassis/Power Supply Assembly Take the new metal chassis assembly. Power supply Chassis...
  • Page 43 Changing the Power Supply/Metal Chassis Assembly 4 Disassembly/Reassembly 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 Locate screw socket through...
  • Page 44 4 Disassembly/Reassembly Changing the Power Supply/Metal Chassis Assembly Step 6: Replacing the MIF Board 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. Multipin connector 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.
  • Page 45 Changing the Power Supply/Metal Chassis Assembly 4 Disassembly/Reassembly Reconnect the power supply connector plug to the socket at the front left hand corner of the MIF board. Reconnecting six-pin power connector Step 7: Replace The Top Cover Assembly Replace the top cover assembly taking care not to over-torque the screws (see page 29).
  • Page 46 4 Disassembly/Reassembly Changing the Power Supply/Metal Chassis Assembly To Purchase, Visit Avobus.com or call 1-800-674-3655...

  • Page 47: Spare Parts

    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 Ordering Number Number for Exchange Parts Number for New Parts Alternative Alternative Part No.

  • Page 48: Non-Exchange Parts

    5 Spare Parts Non-Exchange Parts Non-Exchange Parts Ordering Number Alternative Part No. Identifier Description M2720-67701 453563474091 Base station metal chassis (housing bottom) including power supply and DC cable M2720-64003 453563474081 Base station top cover assembly including screws without warning label (see below) 2110-0495CP 453563071821...

  • Page 49: Supplies And Accessories

    M2727A 862490 DECG Accessories: DECG reusable legplate adapter cable (with 9898 031 37651 flushing port) New Philips DECG DECG leg attachment electrode for DECG 9898 031 39771 Solution legplate adapter cable DECG fetal scalp electrode: single spiral, 9898 031 37631...
  • Page 50 5 Spare Parts Supplies and Accessories Ordering Number Alternative Description of Supplies/Accessories Part No. Identifier Electrodes (pre-gelled) 40493E 989803101681 Fetal belts, washable (pack of 3, contain latex) M1562A 989803104111 Waterproof fetal belts, washable (pack of 3) M1562B 989803129891 Disposable abdominal belts (case of 100) M2208A 989803106021 PC service cable for Service Support Tool...

  • Page 51: Antenna And Base Station Part Numbers

    Antenna and Base Station Part Numbers 5 Spare Parts 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. Base Station Ordering Number Band Antenna Part Number Number for Exchange Parts...
  • Page 52 5 Spare Parts Antenna and Base Station Part Numbers To Purchase, Visit Avobus.com or call 1-800-674-3655...

  • Page 53: 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.

  • Page 54: Performance Assurance Tests

    6 Preventive Maintenance and Safety Performance Assurance Tests 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.

  • Page 55: Testing Alarms

    Safety Tests 6 Preventive Maintenance and Safety 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.

  • Page 56: Safety Test Procedures

    6 Preventive Maintenance and Safety Safety Tests The correct and accurate functioning of the equipment is ensured by the successful completion of the CAUTION 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.

  • Page 57: How To Carry Out The Test Blocks

    Table 2: M2720A: Test and Inspection Matrix What to Record on Service Test Block Test or Inspection to be Performed Expected Test Results Record (Philips Personnel only) Visual Inspect the unit, transducers and cables for any damage. Are they free of damage? If Yes, Visual test is passed.

  • Page 58: Description Of Applicable Safety Tests

    6 Preventive Maintenance and Safety Safety Tests 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.

  • Page 59: S(3): Enclosure Leakage Current Test - Single Fault Condition (Sfc) Open Supply

    Safety Tests 6 Preventive Maintenance and Safety Medical electrical system Instrument under test Signal parts Signal parts (**) in- and/or in- and/or output output L (N) Other Instrument Applied part N (L) (*) 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:...

  • Page 60: Instrument Safety Test

    6 Preventive Maintenance and Safety System Test M e d ic a l e le c tric a l s y s te m In s tr u m e n t u n d e r te s t S ig n a l p a r ts S ig n a l p a r ts (** )

  • Page 61: System Example

    Regular Preventive Maintenance 6 Preventive Maintenance and Safety Do not connect any devices that are not supported as part of a system. WARNING 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...

  • Page 62: Visual Check

    6 Preventive Maintenance and Safety Regular Preventive Maintenance 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.

  • Page 63: Battery Check

    Battery Check 6 Preventive Maintenance and Safety 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: –...

  • Page 64: Stopping The Battery Test

    6 Preventive Maintenance and Safety Battery Check 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 The battery check has four stages: Battery charge cycle Fast battery discharge...

  • Page 65: Reading Battery Check Data Using The Service Support Tool

    Battery Exchange 6 Preventive Maintenance and Safety 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.
  • Page 66 6 Preventive Maintenance and Safety Battery Exchange...

  • Page 67: Troubleshooting

    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. If the troubleshooting procedure requires you to disassemble the base station, be certain to follow the CAUTION disassembly and reassembly procedures given in Chapter 4.

  • Page 68: Common Problems

    7 Troubleshooting Common Problems Common Problems Reasons why the cordless transducers may not work properly are given below, along with suggested actions to take: Possible Reasons Action Base station cannot tune into a free channel. Check the antenna. Is it correctly and securely attached to the base station? Scan for RF interference (see “Scanning the Available Frequency Range”...
  • Page 69 Common Problems 7 Troubleshooting Possible Reasons Action 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.

  • Page 70: Troubleshooting A Cordless System: An Overview

    7 Troubleshooting Troubleshooting a Cordless System: an Overview Possible Reasons Action In rare cases, transducers may display a hook This indicates a problem with a reed relay for detecting a docked transducer. It consists of a magnet " _/ " when docked to a mains-powered base in the base station and a reed switch in the transducer.

  • Page 71: Checking Contacts

    Checking Contacts 7 Troubleshooting 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.

  • Page 72: Gathering Data

    7 Troubleshooting Gathering Data Both of these problems can be identified by observing the signal loss indicator warning the base station, in addition to dropouts on the recorder traces (see also“Range Definition” on page 67). Refer 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.

  • Page 73: Range Definition

    Range Definition 7 Troubleshooting If the area of reach is not sufficient using the standard 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 (M2720A Option K01) to increase the range.

  • Page 74: Using The Service Support Tool

    7 Troubleshooting RF Interference Using the Service Support Tool How to proceed: 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).

  • Page 75: Broadband Interference

    Guidelines for Channel/Frequency Configuration 7 Troubleshooting 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.

  • Page 76: Excluding Frequencies

    (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 manually using the configuration keys on the base station (refer to page 66).

  • Page 77: Transducers With Fixed Frequency

    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.

  • Page 78: Testing Transducers

    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).
  • Page 79 Testing Transducers 7 Troubleshooting 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. psm18sca.tif Figure 4 Testing an Ultrasound Transducer Using a Pencil A sound should be heard for each crystal tested.

  • Page 80: Toco Transducer Electrical Check

    7 Troubleshooting Testing Transducers If the test results are not as outlined above, repeat the tests with another 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 a RF-related problem. Check for frequent mode annotations on the fetal monitor’s recorder to confirm this.

  • Page 81: Ecg Transducer Electrical Check

    Testing Transducers 7 Troubleshooting • 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.

  • Page 82: In Mecg Mode

    7 Troubleshooting Troubleshooting the Top Cover – Avalon FMxx monitors: INOP should disappear. DECG LEADS OFF 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: •...

  • Page 83: Function Buttons

    Troubleshooting the Top Cover 7 Troubleshooting 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: •...

  • Page 84: Display/Window

    7 Troubleshooting Factory Information Code Log 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 61), and check the lamps during the lamp-test phase of the self-test. Look for: –...

  • Page 85: Changing Settings

    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: –...

  • Page 86: Function Settings

    8 Changing Settings Function Settings 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: Step Action...

  • Page 87: Selecting The Channel Frequency Spacing

    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:...
  • Page 88 8 Changing Settings Function Settings Step Action Display looks like... Press to change the setting for the spacing. Press to accept the new setting and return to normal operation. To Purchase, Visit Avobus.com or call 1-800-674-3655...

  • Page 89: Action Settings

    Action Settings 8 Changing Settings 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 Step Action looks like... Press the two arrow keys simultaneously.

  • Page 90: Starting The Battery Check

    8 Changing Settings Action Settings Step Action Display looks like... Press . ‘A1’ appears, and the ‘1’ blinks. Press three times to increment ‘A’ setting to 4. Press . The FIC log is cleared, and the display reverts to normal. Starting the Battery Check Step Action...

  • Page 91: Upgrades

    • PC interface 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.
  • Page 92 9 Upgrades...

  • Page 93: Specifications

    Specifications Specifications for the accuracy of heart rate measurements are given in the Instructions for Use of the fetal monitor. General Environmental Specifications (Transducers and Base Station) 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...

  • Page 94: Transducers

    10 Specifications Transducers Base Station Specifications 50  Antenna Input Impedance Water Ingress Protection Code IP X1 (protection only against vertically falling water drops) Monitor Interface Toco Output Accuracy ± 0,5% per 100 mmHg (not including transmitter) Offset ± 5 Units (not including transmitter) Range 0 to 4V...

  • Page 95: Frequency Bands

    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 Zea-...

  • Page 96: Cables

    10 Specifications Cables Frontends ECG Frontend Type Two Lead ECG Input Impedance > 10M @ 35 Hz CMRR > 110 dB (with 51.1 kW || 47nF imbalance @ line frequency) < 4 Vp @ 25 k input impedance Noise Contact Potential ±...

  • Page 97: Electromagnetic Compatibility (Emc) Specifications

    Electromagnetic Compatibility (EMC) Specifications 10 Specifications 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.

  • Page 98: Finding Recommended Separation Distances

    10 Specifications Electromagnetic Compatibility (EMC) Specifications Finding Recommended Separation Distances The device intentionally receives RF electromagnetic energy for the purpose of its operation. Therefore, WARNING 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).
  • Page 99 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.

  • Page 100: Recommended Separation Distances From Portable And Mobile Rf Communication Equipment

    10 Specifications Essential Performance 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 maintaining 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.
  • Page 101 Essential Performance 10 Specifications Parameter Essential Performance General No interruption or cessation of current operating mode (e.g., no reboot, display is functional, etc.) No spontaneous operation of controls (e.g., no activation of touch screen controls without user interaction) Measurement of the heart rate within the specified error limits and over the specified measurement ranges Alarming on heart rate limit violation within specified delay time.
  • Page 102 10 Specifications Essential Performance...

  • Page 103: A Removing And Replacing The Transducer Battery

    Removing and Replacing the Transducer Battery Recycle according to local laws Correct use Incorrect use NEVER immerse a transducer in liquid if the battery drawer is open or has been removed. Check the CAUTION condition of the drawer before refitting, and verify that it is fully closed before use. M2720-64001 Battery Replacement Kit Contents: Use only this tool to open drawer Central...
  • Page 104 A Removing and Replacing the Transducer Battery Wipe off excess silicone grease.

  • Page 105: B Removing And Replacing The Transducer Belt Button

    Removing and Replacing the Transducer Belt Button Dispose of item Broken Knob NEVER immerse a transducer in liquid if the belt button has been removed, or is loose, broken or damaged. CAUTION M2720-64002 Replacement Belt Button Kit Contents: If the Button is Broken GO TO...
  • Page 106 B Removing and Replacing the Transducer Belt Button To Purchase, Visit Avobus.com or call 1-800-674-3655...

  • Page 107: 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 system. Excluded Base Station Fixed Frequencies Transducer Fixed Frequencies Base Station ID Frequencies (Bed Label Number (up to four Base Frequency Channel and Serial Number) ranges) (F3 Setting) Spacing* Toco *Contact Philips Support before changing the channel spacing.
  • Page 108 C Avalon CTS Frequency Table...
  • Page 109 disassembly procedures Toco frontend MIF board removal US frontend A settings receiver board HIF board accessories tools required human interface board. See HIF board top cover action settings clearing FIC disassembly tools displaying software revision disassembly/reassembly procedures 27–39 installation antenna display window troubleshooting customer installable extension mounting kit...
  • Page 110 software revision, displaying battery block diagram software upgrades patient safety communication spare parts performance assurance tests communication with b. station exchange detection pin connections, fetal monitor interface non-exchange planning frequencies specifications 87–?? electrical check (DECG) power supply antenna system electrical check (MECG) AUX frontend pre-installation consideration frontend hardware...

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