Ultrasound Technologies Fetatrack 310 User manual

Ultrasound Technologies Ltd
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
T [phone] F: [phone] E: [email protected] W: www.doppler.co.uk
Fetatrack 310
Service Manual
Issue 3

Contents
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
T [phone] F: [phone] E: [email protected] W: www.doppler.co.uk
Ultrasound Technologies Ltd
ABOUT THIS MANUAL....................................................................................................................1
SAFETY IN USE................................................................................................................................2
Special Precautions ........................................................................................................................2
Electrical Shock Hazard..................................................................................................................2
Explosion Hazard ............................................................................................................................2
Handling the Delicate Transducers...............................................................................................3
Symbols Used..................................................................................................................................3
PARTS AND THEIR FUNCTIONS....................................................................................................4
FT310 Front Panel Controls............................................................................................................4
Recorder On/Off.............................................................................................................................4
Front Panel Event Mark.................................................................................................................4
Volume Up .....................................................................................................................................4
Volume Down.................................................................................................................................4
US1 / US2 Transducer Select........................................................................................................4
Toco Zero.......................................................................................................................................4
Indicators and Connectors.............................................................................................................5
’Power On’ Indication.....................................................................................................................5
RS232 Output................................................................................................................................5
Remote (Patient) Event Marker .....................................................................................................5
Probe Connection..........................................................................................................................5
User Configuration..........................................................................................................................6
The Printer........................................................................................................................................8
Ultrasound Fetal Monitoring...........................................................................................................9
Uterine Activity Monitoring...........................................................................................................10
Fetal Activity ..................................................................................................................................10
Alarms.............................................................................................................................................11
Transducer Belts ...........................................................................................................................12
Interpretation .................................................................................................................................12
TROUBLESHOOTING....................................................................................................................13
No Display Information on LCD.......................................................................................................13
Keyboard Does Not Respond..........................................................................................................13
No Sound From Loudspeakers .......................................................................................................13
No FHR Information on Display or Recorder ..................................................................................13
No Chart Printed..............................................................................................................................13
MAINTENANCE..............................................................................................................................14
General ...........................................................................................................................................14
System Cabinet............................................................................................................................14
Transducers.................................................................................................................................14
SPECIFICATION.............................................................................................................................15
ENVIRONMENTAL .........................................................................................................................16
Electrommagnetic Compatibility..................................................................................................17
WEEE and RoHS............................................................................................................................18

Ultrasound Technologies Ltd
Contents
Fetatrack310 Service Manual Issue3 Page 2
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
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Dismantling Procedure..................................................................................................................19
Internal Layout ...............................................................................................................................19
Circuit Description.........................................................................................................................20
Power supply Circuit.....................................................................................................................20
Ultrasound Circuit.........................................................................................................................21
Oscillator and Transmitter output.................................................................................................21
Receiver and Detector..................................................................................................................21
Audio Amplifier .............................................................................................................................21
Signal Pre-processing..................................................................................................................22
Ultrasound Channel 2...................................................................................................................22
Toco Circuit ..................................................................................................................................22
Event Marker................................................................................................................................22
Microprocessor Circuit..................................................................................................................23
Printer Interface............................................................................................................................23
Display..........................................................................................................................................24
Data Storage ................................................................................................................................24
Performance...................................................................................................................................25
Introduction...................................................................................................................................25
Performance Checks....................................................................................................................25
Drawings.........................................................................................................................................27
Parts Lists.....................................................................................................................................27
Circuit Data...................................................................................................................................27
Assembly Drawings......................................................................................................................27

About This Manual
Fetatrack310 Service Manual Issue3 Page 1
Ultrasound Technologies Ltd
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
T [phone] F: [phone] E: [email protected] W: www.doppler.co.uk
This booklet explains the operation and service of the FETATRACK 310 Antenatal
Cardiotocograph. Care has been taken during the design and manufacture of this product so
that it satisfies all of the current safety standards set down by BS EN60601-1-1990.
To achieve the best from this product read the following sections several times and if you
have any problems in the operation of a particular part of the product then contact your dealer
immediately or contact :
Ultrasound Technologies Ltd
Lodge Way
Portskewett
Caldicot, NP26 5PS
South Wales
UK
Tel [phone]
Fax [phone]
EMAIL [email protected]
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. Maintenance outside the scope of the user should be undertaken on an annual
basis by trained service personnel; full details are available from your supplier, service centre
or from Ultrasound Technologies Ltd.
The FETATRACK 310 is supplied complete with the following: -
FETATRACK 310 Single Fetus
Monitor FETATRACK 310 Twin Fetus Monitor
US1 Monitoring Transducer US1 Monitoring Transducer
External Toco Transducer US2 Monitoring Transducer
Patient Event Marker External Toco Transducer
Belt and Buckle set (x2) Patient Event Marker
Chart pack (x1) Belt and Buckle set (x3)
Power Cord Chart pack (x1)
Operating instructions Power Cord
Coupling gel (0.25ltr) Operating instructions
Coupling gel (0.25ltr)

Ultrasound Technologies Ltd
About This Manual
Fetatrack310 Service Manual Issue3 Page 2
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
T [phone] F: [phone] E: [email protected] W: www.doppler.co.uk
Special Precautions
Your FETATRACK 310 Antenatal Cardiotocograph has been
designed for electrical safety. All the safety and operating
instructions should be read before operating the FETATRACK 310.
Failure to do so could result in injury to the user, patient, or damage
to the system and accessories.
Electrical Shock Hazard
Do not defeat the grounding integrity of this system. Protection
against electrical shock, in the event of failure of basic insulation, is
provided by the connection of the chassis to the safety ground.
Safety grounding occurs only when the 3-wire cable and plug
provided with the system are connected to a properly grounded
receptacle.
Do not remove the system cover. The system should be serviced by
trained and qualified personnel only. Contacting the hazardous
voltages within the system could cause serious injury.
Do not use the system if the power cord has any cuts or openings.
Do not use the transducer if the cable has any cuts or openings.
Do not use the transducer if the transducer face is cracked or
chipped.
Do not immerse the transducer cable connectors in any liquids.
Should the electrical safety fuses have to be replaced, use only fuses
of the same type and rating.
Explosion Hazard
Do not operate or use this system in the presence of flammable
anesthetics or gases as it could lead to explosion.

Ultrasound Technologies Ltd
About This Manual
Fetatrack310 Service Manual Issue3 Page 3
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
T [phone] F: [phone] E: [email protected] W: www.doppler.co.uk
Handling the Delicate Transducers
The transducers are delicate parts of the ultrasound system and
should be treated with care. The delicate crystals in the transducer
may crack and render the transducer unusable if the transducer is
subject to shock. Room temperature liquids should be used for
cleaning.
NEVER use alcohol or mineral oil as an acoustic coupling agent as
transducer face and cable damage will occur.
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.
Alternating current
Associated with power on indicator
Type B Equipment
Unit classification
Off (power: disconnection from the mains)
On (power: connection to the mains)
Attention, consult accompanying documents.
Associated with auxiliary connections see
operating instructions.
This symbol on the product or on its packaging indicates that
this product must not be disposed of with your normal waste.

Ultrasound Technologies Ltd
Parts and Their Functions
Fetatrack310 Service Manual Issue3 Page 4
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
T [phone] F: [phone] E: [email protected] W: www.doppler.co.uk
FETATRACK 310 Front Panel Controls
The front panel control area contains 6 buttons used to control the operation of the
unit, they are all indicated by icons to aid language variations.
Recorder On/Off and Speed Change
This button is used to control the operation of the recorder. Press once and the
chart recorder will start, each consecutive short press will change the speed .
Pressing and holding the button down will stop the recording.
Event Mark 1
Places an event mark arrow at the top of the FHR scale .
Volume Up
This button is used to increase the audio volume level, or in configuration mode to
change user options.
Volume Down
This button is used to decrease the audio volume level, or in configuration
mode to change user operations.
US1 / US1 Transducer Select in Twins mode
Pressing this button changes the selected probe from US1 to US2 for volume
output. This is used when the unit is in twins mode with two US channels for
listening to either of the two fetuses. Press and hold to activate twins trace offset.
Toco Zero
This button zeros the Toco trace to the selected baseline.
Recorder On /
Off and speed
control
Event Mark 1.
Places arrow in
upper portion of
chart
Volume Up
Volume Down
Select ultrasound channel
for audio output in twins
mode.
Toco Zero.
Sets Toco channel
to preset baseline
value.

Ultrasound Technologies Ltd
Parts and Their Functions
Fetatrack310 Service Manual Issue3 Page 5
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
T [phone] F: [phone] E: [email protected] W: www.doppler.co.uk
Inputs / Outputs and Displays
’Power On’ Indication
The green LED associated with the above symbol indicates that power is
connected to the apparatus when illuminated.
RS232 Output
This output is for the connection of an external computer for data transfer. The
maximum voltage that can be applied to this output is 15VDC.
WARNING: Any external equipment connected to this output must meet the
equivalent MEDICAL safety standard to this product.
Connection must only be made by a qualified technician.
An isolation connection may be necessary when connection is to be
made to a personal computer.
Remote Event Marker
Connection of an external event mark switch allows the patient to indicate events
by printing an arrow in the gap between the FHR and UA traces. The maximum
voltage that can be applied to this output is 15VDC.
Probe Connections US1, US2, Toco
This is for the connection of approved Doppler and Toco transducers. The
maximum voltage that can be applied to this output is 15VDC.

Ultrasound Technologies Ltd
Operating Procedures
Fetatrack310 Service Manual Issue3 Page 6
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
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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.
Before turning the FETATRACK 310 on, press and hold down the Toco Zero button. Then, whilst
keeping the Toco Zero button pressed down, turn the FETATRACK 310 on by flicking the AC
input on/off switch which is located on the rear of the unit as part of the AC line input socket.
When the unit is on the front panel LED will be illuminated.
The FETATRACK 310 starts and then enters its User Configuration Mode, release
the Toco Zero button as soon as ‘Calibrate System’ is displayed .
You are then prompted to enter the date if different to that displayed.
To change the day and month press the Volume Up button. One press advances the
day by one, pressing the Volume Up button for longer advances the day by 10.
To change the year press the Volume Down button. One press advances the year by
one, pressing the Volume Down button for longer advances the year by 10.
When the correct date is displayed press the Toco Zero button once.
You are then prompted to enter the time if different to that displayed.
This works in a similar manner to the date with the Volume Up button advancing the
hours and the Volume Down button advancing the minutes.
When the correct time is displayed press the Toco Zero button once.
You are then prompted to enter the Toco Base Line offset.
This sets an artificial zero line for the toco transducer above zero, it can be set by
pressing the Volume Up or Volume Down buttons for a value between 0 - 20.
After setting this value the Toco will be set to this every time the Toco Zero switch is
pressed, and allows small negative Toco excursions to be seen on the chart.
When the chosen zero offset is displayed press the Toco Zero button once.

Ultrasound Technologies Ltd
Operating Procedures
Fetatrack310 Service Manual Issue3 Page 7
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
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You are then prompted to enter the Toco Filter Value.
This sets the filtering within the monitor to produce a smoother Toco trace if required.
( The filter can remove some of the maternal breathing artifact). It is set by pressing
the Volume Up button for a value soothing value between 1sec and 2sec..
When the correct filter value is displayed press the Toco Zero button once.
You are then prompted to enter the Toco Range.
This sets the response of the Toco transducer to either a full scale of 100 or 200 on
the chart print out. It is set by pressing the Volume Up button for a value between
100 and 200..
When the correct range is displayed press the Toco Zero button once.
You are then prompted to enter the Chart recorder speed.
This sets the initial turn-on speed of the chart recorder. Then once the chart is
running the speed can be further changed to 1 ,2 or 3 cm/min. It is set by pressing
the Volume Up button for a value of 1, 2 or 3 cm/min..
When the correct speed is displayed press the Toco Zero button once.
You are then prompted to select the Data Block on or off.
The Data Block is printed at the start of each recording, this function can be disabled
by setting Data Block to off. It changes from on to off and back again by pressing the
Volume Up button..
When the Data Block is set to your requirements press the Toco Zero button once.
You are then prompted to select the Tachycardia Alarm on or off.
The Tachycardia Alarm is triggered when the system detects a Tachycardia above a
preset value that the user can choose. The Alarm can be a level alarm or one
calculated from a complex. Press the Volume Up button to change the setting. The
alarm is tone is silenced by pressing the units Volume button.
When the Tachycardia Alarm is set to your requirements press the Toco Zero button
once.
You are then prompted to select the Bardycardia Alarm on or off.
The Bradycardia Alarm is triggered when the system detects a Bradycardia below a
preset value that the user can choose. The Alarm can be a level alarm or one
calculated from a complex. Press the Volume Up button to change the setting. The
alarm is tone is silenced by pressing the units Volume button.
When the Bradycardia Alarm is set to your requirements press the Toco Zero button
once.
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.

Ultrasound Technologies Ltd
Operating Procedures
Fetatrack310 Service Manual Issue3 Page 8
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
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The Printer
The FETATRACK 310 prints on preprinted z-fold thermal paper using a thermal array
print head. Fetal heart rate, uterine activity, and fetal movement are recorded
together with date, time, recorder speed, operating mode and alarm status. The printer
also prints a header block each time the printer is turned on, that contains Time and
Date, Patient Name, Gestational Age, Patient or Bed Number, Hospital or Doctor along
with a print viability test bar that prints to all dots of the printhead.
To load the printer with paper, open the printer door by pulling the recorder door using
the opening provided on the printer. It will then release and opens downwards exposing
the printer paper tray. Remove the new paper pack from its protective plastic cover and
insert the pack into the recorder so that the printed side of the paper is uppermost and
the FHR trace is on the left.
Pull the paper out of the front of the unit making sure it is positioned parallel to the roller
and the close the door. The pack will self align when the recorder is run.
To operate the printer press the Recorder On/Off button. The printer will start to run
and the chart speed will be shown in the LCD display. To turn the printer off press
and hold the Recorder On/Off button until the printer stops. (This only operates after the
data block has been printed). A small amount of paper will be fed out at high speed.
The printer will record at 1, 2 or 3 cm/min. To change the speed during recording
simply press the Recorder On/Off button momentarily. The FETATRACK 310 can be
run at the speed of your choice, and will always start at this pre-programmed speed
every time the printer is turned on. For details of how to change the pre-
programmed speed refer to ‘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
store becomes full, the user presses and holds the Recorder On/Off button to reset the
store and loose the stored data or the user inserts a new paper pack, presses Recorder
On/Off button once and the Fetatrack 310 prints the stored data and returns to normal
printing.
When the store reaches 90% full the Fetatrack 310 will “Alarm” and show “StoreLow”, if
the store then becomes full the display changes to “StoreFull” and there will be no
further storage. The data can still be printed by pressing Recorder On/Off button once
or reset by pressing and holding the Recorder On/Off button.
The print from store is lighter than the normal trace to distinguish stored data.

Ultrasound Technologies Ltd
Operating Procedures
Fetatrack310 Service Manual Issue3 Page 9
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
T [phone] F: [phone] E: [email protected] W: www.doppler.co.uk
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. Push the relevant
plug firmly into is colour coded front panel US socket and turn the unit on.
Locate a clear fetal heart sound using a Doppler Fetal Heart Detector and secure the
stretch belt in position, so that it passes over the transducer site, and clamp in place by
fastening the buckle after feeding the belt through the transducer.
Apply gel to the surface of the transducer locating it approximately in the position
determined by the Doppler detector. Position the transducer to obtain the clearest fetal
heart sound. The heart rate processor will start to calculate heart rate within a few
seconds and the heart rate can be observed on the LCD display. Correct operation
can be verified by observing that the pulse lamp is flashing at the heart rate.
The heart shaped fetal pulse indicator is also used as a signal quality indicator.
When positioning the transducer observe the indicator, which should be solid under the
best signal conditions. If this indicator is only showing an outline heart then this is an
indication that the signal quality is not optimum. Improved recordings can be
obtained by repositioning the transducer so that this indicator always shows a solid
heart. In the absence of signals of adequate quality this indicator will be permanently off.
The audio volume can be increased by pressing the volume up button marked with the
up arrow. Conversely to decrease audio volume press the button marked with the down
arrow. In twins mode the audio output is selected for either channel by pressing the US
1/2 button. The selected channel is indicated on the LCD display by the capital US letters.
Once a clear fetal heart signal has been located set the volume to the desired level
using these controls.
Transducer position should be checked at least half-hourly during labour-monitoring or
prolonged NST. When repositioning the transducer, further coupling gel may be
required When repositioning the transducers always ensure that the fetal pulse indicates
the optimum signal conditions.
Results will vary from one patient to another, but in all cases good transducer
positioning is essential, and this may be aided by the use of a liberal amount of coupling
gel.
With the fetus in the vertex presentation, and the mother sitting or supine, the clearest
sound will normally be found on the midline below the umbilicus. In the lateral
position, clearer sounds may be found with the transducer displaced from the centre line
to the upper surface of the abdomen. The clearest signals in breach presentation may
be located higher and to one side.

Ultrasound Technologies Ltd
Operating Procedures
Fetatrack310 Service Manual Issue3 Page 10
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
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Transducer position which results in sounds with a strong placental or cord signal
should be avoided, as these frequently render traces with artifacts.
It is important that a distinct fetal heart sound is present during monitoring for correct
function of the unit . Any doubt about fetal variability should be checked by listening to
the audible signal, or by an alternative diagnostic technique.
A simple check of the ultrasonic system can be made by holding the transducer against
the palm of the hand and stroking the back of the hand at a fixed rate, for example,
twice per second. A clear audible signal should be heard and the digital display
should show a rate after approximately five seconds. With the printer running this rate
will be recorded on the chart.
In the event of HR1 and HR2 traces overlapping or having similar rates the HR2 (US2)
trace can be offset by –20bpm by pressing and holding the US½ key. This is reset when
the recording session finishes.
Uterine Activity Monitoring
The Toco transducer is used to monitor uterine activity. The transducer plug is colour
coded grey for ease of identification. To monitor uterine activity plug the Toco
transducer into the grey UA input socket.
The Toco transducer is sealed to prevent the ingress of fluids. NO coupling gel is
required for this transducer to operate correctly.
Place the transducer on the centre line over the fundus in a position where the
uterus is firm, and secure in place with the stretch belting. Attach belt in the same
fashion as with the ultrasound transducer.
Once the transducer is in position, push the Toco Zero button on the front panel to
zero the recording. The position of the zero baseline can be set to suit individual
preferences. For details of how to change the pre-programmed baseline refer to ‘User
Configuration’.
Fetal Activity
Fetal activity may be recorded with the assistance of the patient. A hand-held
marker switch is provided for this purpose and this is plugged into the socket
immediately to the right of the UA input on the front of the unit.
If the patient feels movement of the fetus she may press the switch and this will mark
the paper with an arrow in the gap between the HR and UA traces. Alternatively this
marker may be used by the midwife to indicate any changes made during the
procedure, such as repositioning of the transducers or movement of the patient.
A front panel event marker is also provided, and this marks the trace on the top edge of
the HR scale. This can be used where two types of indication are required.

Ultrasound Technologies Ltd
Operating Procedures
Fetatrack310 Service Manual Issue3 Page 11
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
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Alarms:
The Fetatrack 310 has built in Bradycardia and Tachycardia alarms. These can be set On
or Off in the setup program. The status of the alarms are printed in the center of trace
between the UA and FHR traces. When an alarm is activated a down arrow with an “A” is
printed at the top of the trace and an audio alarm sounds. 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.
When set to “Complex” the Fetatrack 310 monitors the last 3 time periods of 20 sec each
of Heart Rate data and alarms if the fall below the selected numeric value and are in a
descending rate for Bradycardia or ascending for Tachycardia.
Paper Out will sound a short alarm to draw attention to the monitor, if the paper out store
reaches 90% full the Alarm will sound again until cancelled by the user pressing either
volume up or volume down.

Ultrasound Technologies Ltd
Operating Procedures
Fetatrack310 Service Manual Issue3 Page 12
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
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Transducer Belts
Both the ultrasound and contractions transducers are held in position with elastic
belting which maintains the active elements in contact with the abdomen. The belts
should first be placed around the patient and held in place at the correct tension with
the plastic buckles. As the transducers are free to slide on the belt final positioning
can be easily achieved. Similarly repositioning of the transducers is made very much
simpler.
Interpretation
The following is intended only as a brief guide. For a fuller explanation of the
interpretation of chart records, refer to suitable reference books.
During the antepartum period the Non Stress Test (NST) is an accurate means
of predicting fetal well-being. The criteria proposed by Schifrin et al for the
interpretation of the NST is summarised.
Reactive - accelerations of 15 BPM or more which last for 15 seconds or longer
twice in any 10 minute period. These may be accompanied by fetal activity.
Non-reactive - evidence of fetal movement during a forty minute period, but without
the reactivity indicated above.
Unsatisfactory - recording quality too poor to determine the above criteria.
Stimulation of the fetus, or repositioning of the transducers may result in an improved
recording.
Results from the NST may indicate the requirements to perform other diagnostic
checks such as the Contractions Stress Test (CST).

Ultrasound Technologies Ltd
Troubleshooting
Fetatrack310 Service Manual Issue3 Page 13
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
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The information in this section will help you to check and correct common operation and system
problems. Refer to the troubleshooting hints which deal with your problem. Perform the suggested
steps. If the problem is not solved, check once again to make sure that you have used all of the
suggested steps to resolve the problem.
Electronic failures and service procedures are not included in this manual, as all servicing of the
system must be performed by a qualified service technician. Valuable time however can be saved
by documenting the problem .
In general, when you have a problem, check your control settings to be sure that they are in proper
operating position. Consult the appropriate section in this manual for specific information on
particular controls or operating modes.
WARNING: Disconnect system from the power source before checking fuses and connections.
Check all connections and fuses. Replace fuses with same type and rating as indicated on the rear
panel of the unit.
No display information on LCD
·Verify the system is on and that the fuses are intact.:
Keyboard does not respond
·
·Verify the system is on and that the fuses are intact.
Reset system by turning off then back on.
No sound from loudspeaker.
·Check volume control is set high.
Verify the system is on and that the fuses are intact.
·Check that the correct transducer has been selected.·
·Check connection of the transducer.
No FHR information on display or FH trace printed on recorder.
·Check that the correct transducer has been selected and connected to the
patient.
·
·Check for audio FH complex and reposition transducer until clearly heard.
Check connection of the transducer.
No chart printed .
·Check that the recorder is turned on.
Verify the system is on and that the fuses are intact.
·Check paper is inserted into the recorder correctly.·Check recorder door is correctly closed·
·Check that paper moves out of the recorder at the correct rate.

Ultrasound Technologies Ltd
Maintenance
Fetatrack310 Service Manual Issue3 Page 14
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
T [phone] F: [phone] E: [email protected] W: www.doppler.co.uk
The following are the user preventative maintenance tasks. It is recommended that these be
performed on a regular basis at a frequency determined by the usage of the equipment, but not less
than once every month.
WARNING: Before undertaking any of these tasks disconnect the unit from the mains.
General
Check all cables, connectors and transducers for damage and repair or
replace where necessary. The repair may involve your local service centre,
supplier or Ultrasound Technologies Ltd. For advise on any damaged part
contact them immediately.
Cleaning - Enclosure
Clean the exterior of the system with a soft dry cloth. In the event of
stubborn spots, disconnect the system from the power source. Use a soft
cloth that has been dampened - not soaked - in a mild detergent solution or
isopropyl alcohol. Be sure to keep excess moisture from entering the
cabinet via any openings that may be present.
Cleaning - Transducers
Use a cloth dampened in a mild detergent solution or isopropyl alcohol to
clean the transducer and cable. Remove all traces of the detergent or
alcohol by wiping with a cloth dampened in clear water. Never soak the
transducer cable or connector.
WARNING: Transducers must never be exposed to gas or heat sterilization or be left
immersed in any liquid for more that a few seconds.

Ultrasound Technologies Ltd
Specification
Fetatrack310 Service Manual Issue3 Page 15
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
T [phone] F: [phone] E: [email protected] W: www.doppler.co.uk
Ultrasound
Frequency 1.5 or 2.1 and 1.8 MHz continuous wave
Transducer Multi element wide angle
Audio Response 300 - 1 KHz
Range 50 - 210 bpm
Power Output 5 mW/sq cm max. SATA
Signal Processing Software AUTOCORRELATOR
Indicators LCD heart rate and pulse indication
Toco
Transducer Differential external pressure transducer
Response 0 - 5 Hz
Scale 0 - 100
Indicators LCD Toco numeric level indication
Event Mark
Hand held User operated
Unit Front Panel User operated
Alarms
Bradycardia Complex and Level alarms
Tachycardia Complex and Level alarms
Paper Out Short Alarm
Data Presentation
Strip chart recorder and alphanumeric display module.
Printhead 4 inch thermal solid state printhead
Resolution 8 dots / mm
Speeds 1,2,3,cm/min
Speed accuracy Better than 1%
Paper Z fold
Paper type Black thermal
Paper out storage 30 mins
Display 32 character by 2 line LCD display module
Controls 6 control buttons (for Paper Start /Stop,
Volume Up, Volume Down, US½, Toco
Zero and Event Mark)
Indicators Green power on/ off

Ultrasound Technologies Ltd
Specification
Fetatrack310 Service Manual Issue3 Page 16
©Ultrasound Technologies Ltd, Lodge Way, Portskewett, Caldicot, South Wales NP26 5PS, United Kingdom.
T [phone] F: [phone] E: [email protected] W: www.doppler.co.uk
Power Supply
AC input voltage 200 - 260 VAC or 100 - 130 VAC (User
selected)
Frequency 46 - 64 Hz
Power 60VA
Enclosure
Material Aluminum
0Environmental
Working temperature +10°C to +40°C
Relative humidity 30% to 75%
Storage/Transport temperature -10°C to +70°C
Safety
Unit Designed to BS EN60601-1-1990.
Electrical Designation Class 1 Type B
Computer interface
Transfer 3 wire RS232
Data Rate 9600 baud
Data Standard 8 bits no parity 1 stop bit
Data Format UltraTec Comms Standard
The following Consumables are available for use with the FETATRACK 310
Belt / Buckle set (10 belts / 2 Buckles per pack)
Chart pack (10 per pack))
Power Cord
Coupling gel (0.25ltr) (12 per box)
This Equipment complies with the essential requirements of the European Council Directive.
93/42/EEC
0120