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Ultrasound Technologies Fetatrack 310 Service Manual

Doppler fetal monitor; issue 3
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Ultrasound Technologies Ltd
Fetatrack 310
Service Manual
Issue 3
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
T +44 (0) 1291 425425
F: +44 (0) 1291 427093
E: ultratec@doppler.co.uk
W:
www.doppler.co.uk

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Summary of Contents for Ultrasound Technologies Fetatrack 310

  • Page 1 Ultrasound Technologies Ltd Fetatrack 310 Service Manual Issue 3 ©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom. T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: ultratec@doppler.co.uk www.doppler.co.uk...

  • Page 3: Table Of Contents

    Transducers ..........................14 SPECIFICATION ..........................15 ENVIRONMENTAL ......................... 16 Electrommagnetic Compatibility....................17 WEEE and RoHS..........................18 ©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom. T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: ultratec@doppler.co.uk www.doppler.co.uk...
  • Page 4 Drawings ............................27 Parts Lists.............................27 Circuit Data...........................27 Assembly Drawings........................27 Fetatrack310 Service Manual Issue3 Page 2 ©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom. T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: ultratec@doppler.co.uk www.doppler.co.uk...

  • Page 5: About This Manual

    This service manual contains circuit descriptions, diagrams, parts and spares lists for the FETATRACK 310 .. To maintain the FETATRACK 310’s performance it is recommended that it be included in a periodic maintenance program. The user preventative maintenance program is covered in this manual.

  • Page 6: Safety In Use

    Fetatrack310 Service Manual Issue3 Page 2 ©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom. T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: ultratec@doppler.co.uk...

  • Page 7: Handling The Delicate Transducers

    ONLY use approved ultrasound coupling gels. Symbols Used The following symbols are used on the FETATRACK 310 and are in accordance with BS EN60601-1-1990. Where they are associated with the connection of external equipment, that equipment must meet the relevant safety standards in all cases.

  • Page 8: Parts And Their Functions

    This button zeros the Toco trace to the selected baseline. Fetatrack310 Service Manual Issue3 Page 4 ©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom. T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: ultratec@doppler.co.uk...

  • Page 9: Indicators And Connectors

    15VDC. Fetatrack310 Service Manual Issue3 Page 5 ©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom. T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: ultratec@doppler.co.uk...

  • Page 10: User Configuration

    Ultrasound Technologies Ltd Operating Procedures Operating the FETATRACK 310 In this section, information is supplied which will help you use the FETATRACK 310 for the fist time. User Configuration Firstly connect the AC supply cord. It is necessary to set the operation of the FETATRACK 310 to meet your requirements.
  • Page 11 The FETATRACK 310 will then restart and operate according to your settings. The FETATRACK 310 is now operational, and the LCD screen will show US1 --- us2 --- (if the unit is only a single fetus monitor it will only display US1 ---) and a Toco value.

  • Page 12: The Printer

    ‘User Configuration’. When the paper pack runs out the Fetatrack 310 will sound a short alarm and display “Paper ?”. For the next 30 min the system will store HR1 , HR2 and Toco until either the...

  • Page 13: Ultrasound Fetal Monitoring

    The FETATRACK 310 ultrasound transducer is used to detect and monitor the fetal heart beat. The FETATRACK 310 can monitor twins and if this option is chosen it is supplied with two Ultrasound transducers. The primary Ultrasound Transducer (always supplied ) has a yellow coded plug while the twin channel has a blue coded plug.

  • Page 14: Uterine Activity Monitoring

    HR scale. This can be used where two types of indication are required. Fetatrack310 Service Manual Issue3 Page 10 ©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom. T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: ultratec@doppler.co.uk...

  • Page 15: Alarms

    Pressing either volume up or down can reset the alarm. When set to “Level” the Fetatrack 310 monitors the average of the last 30 sec of Heart Rate data and alarms if this falls below the selected numeric value.

  • Page 16: Transducer Belts

    Results from the NST may indicate the requirements to perform other diagnostic checks such as the Contractions Stress Test (CST). Fetatrack310 Service Manual Issue3 Page 12 ©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom. T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: ultratec@doppler.co.uk...

  • Page 17: Troubleshooting

    Check that paper moves out of the recorder at the correct rate. Fetatrack310 Service Manual Issue3 Page 13 ©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom. T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: ultratec@doppler.co.uk...

  • Page 18: Maintenance

    Fetatrack310 Service Manual Issue3 Page 14 ©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom. T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: ultratec@doppler.co.uk...

  • Page 19: Specification

    Zero and Event Mark) Indicators Green power on/ off Fetatrack310 Service Manual Issue3 Page 15 ©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom. T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: ultratec@doppler.co.uk www.doppler.co.uk...

  • Page 20: Environmental

    This Equipment complies with the essential requirements of the European Council Directive. 93/42/EEC 0120 Fetatrack310 Service Manual Issue3 Page 16 ©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom. T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: ultratec@doppler.co.uk www.doppler.co.uk...

  • Page 21: Electrommagnetic Compatibility

    During conformity testing the Fetatrack 310 was subjected to International Standard EMC tests. During the majority of these tests no non conformances were observed. During EN60601-1-1:2001 testing the FetaTrack 310 was shown to be susceptible to the following tests. Effect was a displayed rate of 115 to...

  • Page 22: Weee And Rohs

    As a producer of electronic devices, Ultrasound Technologies will provide for the financing of the treatment and recycling of waste returned through these designated collection points in accordance with local requirements.

  • Page 23: Dismantling Procedure

    In addition, there is the Front panel displays, keyboard interface and printer drive circuits card mounted on the Lid of the unit. Fetatrack310 Service Manual Issue3 ©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom. T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: ultratec@doppler.co.uk...

  • Page 24: Circuit Description

    Circuit Description Power supply Circuit The 240/110 VAC supply enters the FETATRACK 310 via an IEC double fused inlet / mains filter and switch and is fed to a torroidal transformer. The input supply voltage is stepped down to a nominal 24 VAC and is then bridge rectified by D19, smoothed by C130.

  • Page 25: Ultrasound Circuit

    The power rail for U27 is provided by the unregulated 36V fed from D19. Fetatrack310 Service Manual Issue3 ©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom. T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: ultratec@doppler.co.uk...

  • Page 26: Signal Pre-Processing

    U32 . Overall gain is adjusted by VR2. Event Marker The fetatrack 310 is supplied with a hand held event marker. This is a switch wich when pressed connects an input on the microprocessor U8 to 0V via resistors R110 and R106..

  • Page 27: Microprocessor Circuit

    The signals generated are turned in to phase data by driver U2 on the interface board before energising the coils of the motor. (J4) Fetatrack310 Service Manual Issue3 ©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom. T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: ultratec@doppler.co.uk...

  • Page 28: Display

    20 mins. Fetatrack310 Service Manual Issue3 ©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom. T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: ultratec@doppler.co.uk...

  • Page 29: Performance

    1) Plug the monitor line cord into a grounded receptacle of suitable line voltage and frequency as indicated on the rear panel of the FETATRACK 310 . 2) Turn monitor on. The green front panel LED will illuminate.
  • Page 30 Details of the user programmable options are at the beginning of this manual. Fetatrack310 Service Manual Issue3 ©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom. T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: ultratec@doppler.co.uk...

  • Page 31: Drawings

    Fetatrack 310 US1 Input Socket Fetatrack 310 Toco cable wiring Fetatrack310 Service Manual Issue3 Page 27 ©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom. T +44 (0) 1291 425425 F: +44 (0) 1291 427093 E: ultratec@doppler.co.uk...
  • Page 53 Document contains information of signals at key points throughout the specified product. • Fetatrack 310 The following images are oscilloscope snap shots of signals acquired from the Fetatrack 310 main PCB and correspond to the ‘Fetatrack 310 Power Supplies and Audio Circuit’ diagram.
  • Page 54 Q13 gate, Q13 gate Unit not printing Unit printing Q13 drain Q13 drain Unit not printing Unit printing U30 pin 1 U30 pin 1 Unit not printing Unit printing...
  • Page 55 U30 pin 2 U30 pin 2 Unit not printing Unit printing Q11 base Q11 base Unit not printing Unit printing Q11 collector Q11 collector Unit not printing Unit printing...
  • Page 56 Q12 collector Q12 collector Unit not printing Unit printing U28 pin 1 U28 pin 2 U28 pin 4 U28 pin 5...
  • Page 57 L12 pin 2, U29 pin 1 U29 pin 2 U29 pin 4 U29 pin 5...
  • Page 58 L14 pin 2 + 15V Supply Rail D22 pin 2, D23 pin 1 Junction L15 pin 1...
  • Page 59 Q14 Collector Q14 Base Q14 Emitter - 15V Supply Rail...
  • Page 60 U25 Pins 10 & 7 Image captured whilst stroking US1 transducer U25 Pins 10 & 7 Image captured whilst stroking US2 transducer U25 Pins 10 & 7 Image captured whilst stroking US1 & US2 transducers simultaneously.
  • Page 61 U24 Pin 3 U24 Pin 5 Image captured whilst stroking US1 transducer. Use with US2 Image captured whilst stroking US1 transducer. Use with transducer will result in an equivalent signal. US2 transducer will result in an equivalent signal. U32 Pin 13 U32 Pin 14 Image captured whilst stroking US1 transducer.
  • Page 62 U27 Pin 9 DC level with super imposed audio signal. Audio signal level very low. U27 Pin 9 DC level with superimposed audio signal Audio signal very low. (zoomed in image of audio signal) U27 Pin 6 DC level with superimposed audio signal. Audio signal of audible amplitude.
  • Page 63 Document contains information of signals at key points throughout the specified product. • Fetatrack 310 The following images are oscilloscope snap shots of signals acquired from the Fetatrack 310 main PCB and correspond to the ‘Fetatrack 310 Ultrasound 1 Circuit’ diagram. This document also applies to the two Ul- trasound circuits.
  • Page 64 Transmitter circuit Transmitter circuit Q1 Base ( Pin 2 ) Q1 Collector ( Pin 3 ) Transmitter circuit Transmitter circuit Q1 Emitter ( Pin 2 ) L2 Pin 1 ( Vrf1 ) 10V Supply rail Transmitter circuit Transmitter circuit L2 Pin 3 L2 Pin 4 Transmit signal ( USTx1 ) 2.1Mhz for US1...
  • Page 65 Receiver Circuit Receiver circuit L1 Pin 4 ( RxSig1 ) L1 Pin 1, ( Q3 gate ) Receiver Circuit Receiver Circuit Q3 Drain Q3 Source Receiver Circuit Receiver Circuit Q2 Drain Q2 Gate...
  • Page 66 Receiver Circuit D3 Pin 3 Receiver Circuit At high sensitivity, variation in DC level can be observed when U1 pin 2 stroking transducer. Stroking Transducer Receiver Circuit Receiver Circuit U1 pin 3 U1 Pin 1 Stroking Transducer Stroking Transducer Receiver Circuit Receiver Circuit U1 Pin 6 U1 Pin 5...
  • Page 67 Receiver Circuit Receiver Circuit U1 Pin 7 U1 Pin 9 Stroking Transducer Stroking transducer, but viewing very little response Receiver circuit Receiver Circuit U1 pin 8 U1 Pin 13 Stroking transducer Stroking Transducer, but viewing very little response Receiver circuit Receiver Circuit U1 Pin 14 ( FH1_Audio ) U5 Pin 2...
  • Page 68 Receiver circuit Receiver Circuit U5 Pin 1 U5 Pin 12 Stroking Transducer Stroking Transducer Receiver Circuit Receiver Circuit U5 Pin 13 U5 Pin 14 Stroking Transducer Stroking Transducer Receiver Circuit Receiver Circuit U2 Pin 6 U2 Pin 7 Stroking transducer, but viewing very little response Not stroking Transducer...
  • Page 69 Receiver Circuit Receiver Circuit U2 Pin 7 U2 Pin 2 Stroking Transducer Stroking Transducer Receiver Circuit Receiver Circuit U2 Pin 3 U2 Pin 1 Stroking Transducer Stroking Transducer Receiver Circuit Receiver Circuit U2 Pin 13 U2 Pin 14 Stroking Transducer, but viewing very little response Stroking Transducer...
  • Page 70 Receiver Circuit Receiver Circuit U2 Pin 9 U2 Pin 8 Stroking Transducer, but viewing very little response Stroking Transducer...

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