EDAN INSTRUMENTS SD1MEDAN Ultrasonic Pocket Doppler User Manual

EDAN INSTRUMENTS, INC. Ultrasonic Pocket Doppler

Contents

User manual

SD1 Ultrasonic Pocket Doppler User Manual About this Manual P/N: 01.54.457985 MPN: 01.54.457985012 Release Date:Apr. 2018 ©  Copyright  EDAN  INSTRUMENTS,  INC.  2017-2018.  All  rights reserved. Statement This manualwill help you understand the operation and maintenance of the product  better.  It  is  reminded  that  the  product  shall  be  used  strictly complying  with this  manual. User’s operation failing to comply with this manual may result in malfunction or accident for which Edan Instruments, Inc. (hereinafter called EDAN)cannot be held liable. EDAN owns the copyrights of this manual. Without prior written consent of EDAN, any materials contained inthis manual shall not be photocopied, reproduced or translated intoother languages. Materialsprotected  by  the  copyright  law,  including  but  not  limited  to confidential  information  such  as  technical  information  and  patent informationare contained  in  this  manual,  the user  shall not disclose  such information to any irrelevant third party. The user shall understand that nothing in this manual grants him, expressly or implicitly, any right or license to use any of the intellectualproperties of EDAN. EDAN  holds  the  rights  to  modify,  update,  and  ultimately  explain  this manual. Responsibility of the Manufacturer EDAN only considers itself responsible for any effect on safety, reliability and performance of the equipment if: Assembly operations, extensions, re-adjustments, modifications or repairs are carried out by persons authorized by EDAN, and   The  electrical  installation  of  the  relevant  room  complies  with  national standards, and   The instrument is used in accordance with the instructions for use. EDAN  will  make  available  on  request  circuit  diagrams,  component  part lists,  descriptions,  calibration  instructions,  or  other  information  that  will assist   service  personnel  to  repair  those  parts  of  the  equipment  that  are designated by EDAN as repairable by service personnel. Product Information Product Name:Ultrasonic Pocket Doppler Model:SD1 Terms Used in this Manual This guide is designed to give key concepts on safety precautions. WARNING AWARNING label advises against certain actions or situations that could result in personal injury or death. CAUTION A CAUTIONlabel advises against actions or situations that could damage equipment, produce inaccurate data, or invalidate a procedure. NOTE A NOTE provides useful information regarding a function or a procedure.  Safety Precautions CAUTION Federal  (U.S.)  Law  restricts  this  device  to  sale  by  or  on  the  order  of  a physician. NOTE: This  user  manual  is  written  to  cover  the  maximum  configuration. Therefore, your  model may or  may not  have some of the parameters and functions described, depending on what you have ordered. This  unit  is  internally powered equipment, and  it  is an  IEC/EN 60601-1 Type BF applied part. Type BF protection means that the connection between  the equipment and  personnel complies  with permitted  leakage  currents  and  dielectric  strength  of  IEC/EN 60601-1. WARNING  and  CAUTION  messages  must  be  observed.  To  avoid  the possibility  of  injury,  observe  the  following  precautions  during  the operation of the device. WARNING 1  It is to be used by health care professionals on the order of a physician. 2  The Doppler is a tool to aid the healthcare professional and should not be  used  in  place  of  normal  fetal  monitoring.  It  is  not  intended  for treatment. 3  Placement  of  the  ultrasound  transducer  on  the  abdomen  is  critical  to obtaining the fetal heart beat as opposed to maternal heart beat or other abdominal  noise.  The  user  should  be  trained  in  proper  placement techniques  either  through  acceptable  Ob/Gyn  training  and  individual state  accreditation,  or  as  being  prescribed  by such  a  trained  clinician and trained in device placement. 4  This device is  not explosion-proof and cannot be used in the presence of flammable anesthetics. 5  Magnetic and electrical fields are capable of interfering with the proper performance of the device. For this reason, make sure that all external devices operated in the vicinity of this device comply with the relevant EMC requirements. X-ray equipment and magnetic resonance imaging (MRI) devices can emit high levels of electromagnetic radiation. 6  We  recommend  that  exposure  to  ultrasound  should be  kept  as  low  as reasonably  achievable.  This  is  considered  to  be  good  practice  and should be observed at all time. 7  Do not use the device with HF surgical equipmentand do not use it in an MRI environment. 8  The device is not protected against defibrillation. 9  SHOCK  HAZARD  -  Do  not  attempt  to  replace  batteries  with  wet hands.   10 Do not connect any equipment or accessories that are not approved by the manufacturer or that are not  IEC 60601-1 approved to  the device. The  operation  or  use  of  non-approved  equipment or  accessories  with the device  is  not tested or supported, and  device operation and safety are not guaranteed. 11 Using accessories other than those  specified  by the  manufacturer  may result  in  increased  electromagnetic  emissions  or  decreased electromagnetic immunity of the device. 12 The  device  should  not  be  used  adjacent  to  or  stacked  with  other equipment and that  if adjacent  or stacked use is  necessary, the  device should be  observed  to verify normal operation in the  configuration  in which it will be used. 13 The  medical  electrical  equipment  needs  to  be  installed  and  put  into service according to the EMC Information provided in this user manual. 14 Portable and mobile RF communications equipment can affect medical electrical  equipment;  refer  to  section  Recommended  Separation Distances. 15 Do not service or maintain the device or any accessory which is in use with a patient.  CAUTION 1  Refer servicing to qualified personnel. 2  Keep  the  device  in  a  clean  environment  and  avoid  vibration  during storage. 3  Do not sterilize the Doppler. 4  Electromagnetic Interference - Ensure that the environment in which the  device  is  operated  is  not  subject  to  any  source  of  strong electromagnetic  emissions,  such  as  radio  transmitters,  mobile telephones, etc. 5  Prior  to examination using  the  Doppler, check  for  visible  damages of the main unit  and the probe that  may endanger the patient/operator or machine performance. If the damage is found, replace them with good ones at once. 6  The following safety checks should be performed once every two years or  as  specified  in  the  institution’s  test  and  inspection  protocol  by  a qualified person  who  has  adequate  training,  knowledge,  and  practical experience to perform these tests.  Inspect the equipment for mechanical and functional damage.  Inspect the safety relevant labels for legibility.  Inspect the equipment for mechanical and functional damage.  Inspect the safety relevant labels for legibility. The leakage current should never exceed the limit. The data should be recorded in an equipment log. If the device is not functioning properly or fails any of the above tests, the device has to be repaired. 7  The  device  and  accessories  are  to  be  disposed  of  according  to local regulations after their useful lives. Alternatively, they can be returned to the  dealer  or  the  manufacturer  for  recycling  or  proper  disposal. Batteries  are  hazardous  waste.  Do  NOT  dispose  them  together  with house-hold garbage. .  Introduction Intended Use/Indications for Use The  SD1  is  a  “pocket  Doppler”  device,  meaning  a  hand-held,  battery powered  audio  Doppler  device  integrated  with  3  MHz  probe,  used  for detecting  fetal  heart  beats.  It  is  intended  to  be  used  by  medical professionals. Features  FHR monitoring and display   FH  signal  intensity indicator  FH sound   FH icon  Switching  off  when  no  signal  received for 2 Min  Battery indicator  Sound volume adjustment   Low battery warning  Bluetooth connection (Optional)   Sound volume levels Appearance(Above pictures are just for reference)  LCD Display& Touch Keys Item 1 2 3  4 5 6 7 Battery SD1 is powered by two AA alkaline batteries.AA, 1.5 V;Note: You  can  use  AA  alkaline  batteries  of  the  same  specification  purchased locally.  Basic OperationNOTE: To  ensure  thatChapterSafety  Precautionsconnecting all the components.Opening the Package and CheckingOpen the package; take out the Doppler and accessories carefully. Kepackage  for  possible  future  transportation  or  storage.  Check  the components according to the packing list. Check for any mechanical damage. Check all the cables and accessories.If there is any problem, contact us or your local distributor immediateInstalling the Batterya) Unscrew  the  screwcompartmentb) Insert the battery into the compartmentcathode compartment.c) Install the compartment covRemoving/ Replacing the Batterya) Unscrew  the  screw  with  a  cross  screwdriver  and  remove  the  battery compartment coverb) Take  out  the  used  battery.  You  can  also  replace  it  with  a  new  one.Ensure the new battery’s  terminals are placed  in the  right direction  as indicated by the anode and cathode marks.c) Install the compartment cover and secure it with the screw.1 Turn off the Doppler before 2 Replace provided  by  the  manufacturer  or  purchased  locally.Product Specifications3 If the batteries have been inserted incorrectly, the Doppler  will not Ultrasonic Transducer Head LCD Screen Touch Keys Loudspeaker Screw Battery Compartment Cover  Description Fetal heart icon Indicates fetal heart  beat  and  flickers to the fetal heart beat. Fetal heart signal intensity indicator   This  indicator  displays  on the  left  side  of  the  screen and has three status: empty, half  empty  and  full,  which respectively represents low, medium  and  high  fetal heart signal intensity. FHR numeric  Displays fetal heart rate within the range from 50 bpm to 240 bpm. When fetal heart rate is out of the range, it displays “---”. Sound volume numeric  Sound  volume  numeric  is displayed in the center of the screen,  the  same  area  as  the FHR  numeric.  When  you adjust  sound  volume,  the sound  volume  numeric  will display for 0.5 second before switching  back  to  display FHR numeric. Sound volume ranges from level 0 to 7. Battery indicator  Battery  indicatordisplays on  the  right  side  of  the screen.  There  are  5 battery  levels, represented  by  0  to  4 panes  in  the  icon.  When battery  is  empty,  battery empty  icon will  be displayed  and  flickering, and  the  battery  needs replacing. Sound volume increase touch key Touch  the  keyfor  a  little  while  to  increase sound volume. Sound volume decrease touch key Touch  the  key  for  a  little  while  to  decrease sound volume. On/Off touch key   When the Doppler is off, touch this key for a little while to switch it on; When the Doppler is  on, touch  this key for a little while to switch it off.  SD1 is powered by two AA alkaline batteries. Battery specification: LR6, AA, 1.5 V; You  can  use  AA  alkaline  batteries  of  the  same  specification  purchased  Basic Operation  To ensure  that  the  Doppler  works  properly,  please  read  this chapter  and Safety  Precautions  before  operation;  follow  the  steps  when connecting all the components. Opening the Package and Checking Open the package; take out the Doppler and accessories carefully. Keep the package  for  possible  future  transportation  or  storage.  Check  the components according to the packing list. Check for any mechanical damage. Check all the cables and accessories. If there is any problem, contact us or your local distributor immediately. Installing the Battery nscrew  the  screw  with  a  cross  screwdriver  and  remove  the  battery compartment cover. Insert the battery into the compartment carefully. Ensure its anode and cathode terminals are aligned with the anode and cathode marks on the compartment. Install the compartment cover and secure it with the screw. Removing/ Replacing the Battery Unscrew  the  screw  with  a  cross  screwdriver  and  remove  the  battery compartment cover. Take  out  the  used  battery.  You  can  also  replace  it  with  a  new  one. Ensure the new battery’s  terminals are  placed in  the  right direction as indicated by the anode and cathode marks. Install the compartment cover and secure it with the screw. WARNING Turn off the Doppler before removing or replacing the battery. Replace alkaline  batteries  with  those  of  identical  specifications provided  by  the  manufacturer  or  purchased  locally.  SeeChapter Product Specificationsfor details about battery specifications. If the  batteries have  been inserted  incorrectly, the  Doppler will not
function or it will be damaged. 4  Do not disassemble or short-circuit batteries. 5  Do not recharge batteries. 6  Do not dispose of batteries in fire or water. 7  Do not allow metal objects to contact the battery terminals. 8  Do not mix with used or other battery type  (such  as  alkaline  with carbon zinc). 9  Do  not  solder  the  batteries  directly.  If  soldering  or  welding connection to the battery is required, consult our engineer for proper methods. 10  Do not over-discharge batteries. 11  To install or remove batteries, follow the equipment manufacturer’s instructions. 12  Keep  battery  away  from  small  children.  If  swallowed,  consult  a physician at once. 13  Store the battery in cool, dry place before use.Do not keep batteries at temperature of 45°C or above, or at humidity of 75% or above. 14  Dispose  the  battery  according  to  the  local  regulations.  Refer  to IEC61429 for standard disposal when necessary. Switching On Touch the On/Off  touch key for  about 1second when  the  Doppler is off, and  the  Doppler  will  display  the  switching  on  interface before switching to display the test interface . Switching Off Touch the  On/Off touch  key  for  about 1second  when  the Doppler is  on, and the Doppler will be switched off. If the Doppler is not in operation or no signal is received for 2 minutes, the Doppler will switch off automatically.  FHR Monitoring Before  applying  the  Doppler  to  inspect  FHR,  you  should  always  check whether  the  Doppler  is  in  good  condition  and  whether  there  is  evident damage  that  might  affect  patient’s  safety  and  the  device’s  function.If evident damage is  found, stop using it at once and replace it with a good one. Procedures to Monitor FHR: a) Have the patient lie on her back. b) Apply  appropriate amount of coupling gel to  the  ultrasonic transducer  head  of  the Doppler and switch  on the Doppler. c) Palpate  the  patient’s abdomen  gently  to confirm  the  fetus’s position.   d) Place  the  Doppler  on the  patient’s  abdomen, and move it around the fetus’s position or tilt it until  a  clear  and rhythmic heart sound is heard and FHR numeric is stably displayed. Note: 1  Do  not  mistake  the  maternal  heart  rate  for  fetal  heart  rate.Do  not mistake  the  maternal  heart  rate  for  fetal  heart  rate.  The  fetal  pulse should be different from the maternal pulse, which can be measured at the wrist or neck. 2  Do not wear gloves to touch the keys. If there's water and coupling gel on  the  fingers,  please  clean  them  first  or  the  touching  effect  will  be influenced. How to Find the Best FH Signal: 1) The easiest way: take the position the doctor last monitored for FHR as  a  reference  and  move  the  Doppler  around  the  position  slowly until the best FH signal is found. 2) The fetal heart  position may  change as the  fetus  moves  inside  the uterus.  You  can  confirm  the  fetal  position  first  according  to  the position of the uterus fundus in different gestational weeks. The  clearest  and  loudest  fetal  heart  sound  is  generally  obtained when the Doppler is placed on  the fetus’s back. Fetal movement  is usually the movement of fetal limbs. So, if frequent fetal movement occurs  at  the  right  side  of  the  abdomen,  the  fetus’s  back  is probablyat the left sideand vice versa.You can find the fetus’s back according to fetal movement’s position. If the fetus is in cephalic delivery position, the fetal heart is either on the right  side  or on the left  side below the navel;  if  the fetus is  in breech delivery position, the fetal heart is either on the right side or on the left side above the navel. Steps to Find Fetal Heart: Have the patient lie on back and relax >> confirm fetal position by hand >> apply  coupling  gel  to  the  Doppler>>  place  the  Doppler  on  patient’s abdomen and  start  looking  for  the  fetal  heart  >>  the  fetal  heart  is  found when  the  Doppler  gives  out  a  continuing  thumping  sound “boom-boom-boom”.  CAUTION 1  The Doppler’s degree of protection against harmful ingress of water is IP22. Do not immerse it in water. 2  The Doppler is delicate and sensitive. Please handle it with care and try to  avoid  dropping  on  to  the  ground  or  any  hard  surfaces.  Any damage caused by dropping is not covered by the warranty. 3  Keep the coupling gel away from  children. If swallowed,  consult a The  coupling  gelshould  not  exceed this limit. This  area  can be immerged in coupling gel physician at once. Note: 1  The best quality of fetal heart signal is obtained only when the Doppler is placed in the best monitoring position. 2  Do  not  place  the  Doppler  near  positions  where  placental  sound  or umbilical blood flow sound is loud. 3  If  the  fetus  is  in  the  cephalic position  and  the  mother  is  supine,  the clearest heart sound  will normally be  found on the midline below the navel.  During  monitoring,  the  pregnant  woman’s  prolonged  lying  in the  supine  position  should  be  avoided  to  reduce  the  possibility  of supine  hypotension.  Putting  a  pillow  or  cushion  under  the  patient’s head or feet can be of help. 4  It  is  not  possible  to  obtain  accurate  FHR  unless  a  clear  fetal  heart signal is detected. If the calculated FHR is not in accordance with the beat  of the  fetal heart sound,  the fetal heart  sound auscultation result shall prevail. 5  When applied to the patient, the Doppler may warm slightly (less than 2°C  (35.6°F)  above  ambient  temperature).  When  NOT  applied,  the Doppler  may  slightly  (less  than  5°C  (41°F)  above  ambient temperature). After Monitoring 1) Switch off the Doppler. 2) Wipe the remaining gel off the patient and the probe with a clean soft cloth or tissue.  Mobile Application Software (APP)   SD1  can connect to mobile phones with its Bluetooth  function (optional). The SD1 APP has both Android and iOS versions. iOS APP operating environment:  Android APP operating environment: A) hardware environment  A) hardware environment Processor: dual-core Apple A6  CPU: frequency≥1.0GHz RAM: ≥1GB RAM: ≥1GB B) software environment: iOS 8.0 and above operating system B)software environment: Android 4.3 and above operating system C)network environment: support Bluetooth C)network environment: support Bluetooth How to use SD1 Medical APP 1.Download and install software Scan either of the following QR codes to download the SD1Medical APP, and install and run it as prompted. TBC  TBC Note: 1  Your mobile phone may prohibit the installation  of  “applications  from unknown sources”. Enter Settings to allow the installation first. 2  For  normal  functioning  of  the  APP, please give the  APP function-related permissions. 3  For  how  to  use  the  APP,  read  the instructions  in  the  About sub-interface  under  the  Settings interface of the APP. 2.Activate the device Open the APP and go to Settings>Activation and input SD1 activation code (14 numbers after 01). 3.Pair device Open Bluetooth function of the mobile to automatically pair the SD1. 4.Start detection Put the coupling gel on SD1 and position the probe to the optimal place of maternity's abdomen. And click the "start" key. After pressing start, confirm that the data on the APP and the SD1 probe match. As with any Bluetooth communication, it is important to make sure the connection is not compromised. 5.Adjust the fetal heart beat sound volume When using mobile phone to play the fetal heart beat sound, you can adjust the volume with the volume keys of the mobile phone. When using SD1 to play the heart beat sound, touch ‘volume+’ or ‘volume -’ to adjust the volume. 6.Finish the monitoring When the monitoring is finished, click ‘Stop’ touch key and the detection data will be saved automatically. Note:Please make sure your mobile phone has enough battery power,and avoid killing the process directly or switching to other applications during the fetal heart monitoring. 7.Real time detection mode and DEMO mode We provide DEMO mode for users' reference. You can turn on DEMO key in Setup and enter fetal heart monitoring interface to watch the DEMO. The word ‘DEMO’ is displayed in the interface to distinguish from real time detection. WARNING SD1  complies with Part  15 of the  FCC Rules. Operation is subject to the following two conditions:   1)this device may not cause harmful interference, and   2)this device must accept any interference received, including interference that may cause undesired operation. NOTE: 1.This equipment (SD1) has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correctthe interference by one or more of the following measu-Reorient or relocate the receiving antenna.-Increase the separation betw-Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.-Consult the dealer or an experienced 2.Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Maintenance and CleaningMaintenance Before each  use,  cthat  may  affect  the  patient  and  the  operator’s  safety  or  the  Doppler’s functioning. If the damage is evident, or replace it.The  overall  check  of  the  Doppler,  including  sacheck, should be performed by qualified personnel  every 12  months, and each time after service. and  insulation  test. regulations onThe accuracy of FHR is determined by the Doppler and cannot be adjusted by user. If you have doubt concerning the accuracy of FHR, other methods such as  using a  stethoscope, or contact  local distributor or the manufacturer for help.The  Doppler  is  frangible  and  must  be  handled  with  care.Wipe  the remaining  gel  off  the  Dopplerafter  each  use.  These  measures  can  help prolong the Doppler’s life.Replace the accessories such as the battery according to use. If any of accessories  are  damaged,  refer  to  chapter details and order new ones.Please  check  the  label  for  the  date  of  manufacture,  the  service  life  is  5 years  (  The  service  life  is  limited  to  the  Doppler,  not  including  the replaceable aThe frequency of usage is 8 hours/day).CleaningBefore cleaning, switch off the Doppler.Keep the exterior surface of the device clean and free of dust and dirt. Clean the exterior surface of clean  it  using  a  soft  cloth  dampened  with  mild  near  neutral  detergent, ethanol (75%) or isopropanol (70%),immediately.1 Do not use strong solvent, such as 2 Never use an abrasive such as steel wool or metal polish.3 The Doppler’s degree of protection against harmful ingress of water is IP22. Do not immerse it in water.4 Do not remain any solution on the surface after cleaning.DisinfectionIn  normal  usesoiled, clean  the  main unit case and  then  disinfect  it by wiping  it  with a soft cloth dampened with it dry with a dry cloth.Do not immerse the DSterilizationDo not sterilize the DopplerNOTE: After cleaning or disinfection, check if the opproblem  is  detected,  please  contact  the  manufacturer  for  service  before reusing it.Checking ItemVisual Check Functional Check  Product SpecificationsProduct InformationProduct NameModel Complied StandardsIEC 6060160601-1-ClassificationAnti-electric Shock Type:Anti-electric Shock Degree:Degree  of  Protection  against Harmful Ingress of Water:Degree  of  Safety  in  Presenceof Flammable Gases:Working System:EMC: Physical SpecificationsSize: correctthe interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Maintenance and Cleaning Maintenance  Before each use,  check  if the  equipment has  visible  evidence  of damage that  may  affect  the  patient  and  the  operator’s  safety  or  the  Doppler’s functioning. If the damage is evident, contact the manufacturer for service or replace it. The  overall  check  of  the  Doppler,  including  safety  check  and  function check, should be performed by  qualified personnel every 12  months, and each time after service. And safety check must include current leakage test and  insulation  test. Besides  the  above  requirements,  comply  with  local regulations on maintenance and measurement. The accuracy of FHR is determined by the Doppler and cannot be adjusted by user. If you have doubt concerning the accuracy of FHR, verify it with other methods  such as  using a  stethoscope, or  contact local distributor or manufacturer for help. The  Doppler  is  frangible  and  must  be  handled  with  care.Wipe  the remaining  gel  off  the  Dopplerafter  each  use.  These  measures  can  help prolong the Doppler’s life. Replace the accessories such as the battery according to use. If any of the accessories  are  damaged,  refer  to  chapter Ordering  Information  for details and order new ones. Please  check  the  label for  the  date  of  manufacture,  the  service  life  is  5 years  (  The  service  life  is  limited  to  the  Doppler,  not  including  the replaceable accessories. The only replaceable accessory of SD1 is battery. The frequency of usage is 8 hours/day). Cleaning Before cleaning, switch off the Doppler. Keep the exterior surface of the device clean and free of dust and dirt.  Clean the exterior surface of the Doppler with a dry, soft cloth. If necessary, clean  it  using  a  soft  cloth  dampened  with  mild  near  neutral  detergent, ethanol (75%) or isopropanol (70%), and then wipe it dry with a dry cloth immediately. CAUTION Do not use strong solvent, such as acetone. Never use an abrasive such as steel wool or metal polish. The Doppler’s degree of protection against harmful ingress of water is IP22. Do not immerse it in water. Do not remain any solution on the surface after cleaning. Disinfection In  normal  use  theDoppler  does  not  need  disinfection.  In  case  of  being soiled, clean the  main  unit case and then disinfect  it by  wiping  it  with a soft cloth dampened with ethanol (75%) or isopropanol (70%). Then wipe it dry with a dry cloth. CAUTION Do not immerse the Doppler into the disinfector. Sterilization Do not sterilize the Doppler.  After cleaning or disinfection, check if the opDpler functions well. If any problem  is  detected,  please  contact  the  manufacturer  for  service  before reusing it. Checking Item  Method Visual Check   Inspect the Doppler for any damage. Functional  Check  if  the  Doppler can be  switched  on  and  off normally  (see  Switching  On  and  Switching Off).When the Doppler is switched on, check if the display  panel  works  as  described  in  LCD Display&Touch  Keys;  touch  the  ultrasonic transducer head gently with your hand and check if the Doppler gives out sound normally. Product Specifications Product Information Product Name Ultrasonic Pocket Doppler  SD1 Complied Standards 60601-1:2005/A1:2012,  EN  60601-1:2006/A1:2013,  IEC 2:2014, IEC 60601-2-37:2015,IEC 61266:1994 Classification electric Shock Type:  Internally powered equipment electric Shock Degree: Type BF equipment Degree  of  Protection  against Harmful Ingress of Water: IP22. Do not immerse it in water. Degree  of  Safety  in  Presenceof Flammable Gases: Equipment not  suitable for use in presence of flammable gases Working System:  Continuous running equipment CISPR 11 Group 1 Class B Physical Specifications Length*Width* Height: (48±2) mm× (39±2) mm× (147±3) mm
Weight:  < 180g LCD: Size:  (24±2) mm× (13±2) mm Display: ◆FHR ◆Battery level ◆Signal intensity ◆Sound  volume level ◆FH icon Coupling Gel: pH: 5.5~8.0 Acoustic  Impedance:  1.5x106  Pa.s/m  ~1.7x106Pa.s/m (35°C/95ºF) Environment Working: Temperature:+5°C ~ +40°C ( +41ºF ~ +104ºF) Humidity:15% RH ~ 95% RH(non-condensing) Atmospheric Pressure:70kPa ~ 106 kPa Transport  and Storage: Temperature:-25°C ~ +70°C (-13ºF ~ +158ºF) Humidity:15% RH ~ 95% RH (non-condensing) Atmospheric Pressure:70 kPa ~106 kPa Performance Specifications FHR  (Essential Performance): FHR Measuring Range: 50 bpm ~ 240 bpm Accuracy: ±2 bpm Note:  FHR  measurement  result  may  not  be accurate if the equipment is measuring beyond its measuring range. FHR Resolution: 1bpm Audio Output: Output Power: 2w Background noise: <45dBA Overall Sensitivity: >110dB Auto Power-off: Power off when the Doppler receives no signal or operation for 2 minutes. Bluetooth: TransmissionRange  (Without  Obstacles)  :>5m (Indoor range depends on the building’s structure and material.) Ultrasound: Nominal Frequency: 3MHz Working Frequency: 3MHz p_<1 MPa Iob<10 mW/cm2 Ispta<100 mW/cm2 Isata<10 mW/cm2 Isppa.3<190 W/cm2 Ispta.3<94 mW/cm2 Effective Radiating Area: 490mm2 ± 15% Working Mode: pulse wave Battery Specifications Specification:  Two AA 1.5V alkaline batteries (AA, LR6, 1.5V) Working Duration:  ◆≥6h Bluetooth Specifications FCC ID  SMQSD1MEDAN Modulation:  GFSK π /4-DQPSK 8DPSK Frequency:  2400-2483.5MHz Tolerance Frequency:  ≤ 20ppm RF output power:  ≤ 20dBm (EIRP) Occupied Channel Bandwidth:  ≤ 2MHz Transmitter Unwanted Emissions:  ≤﹣30dBm Low OutputSummary Table (For systems whose global maximum valuedoes not exceed 1.0) System: SD1 Ultrasonic Pocket Doppler Model (MHz) Ispta.3 (mW/cm2) TI Type TI Value  MI  Isppa.3 (W/cm2) SD1 CD3.0  5.69  TIS  0.05  0.01  0.02 TIB 0.01  Ordering Information CAUTION Only  the  parts  supplied  by  the  manufacturershould  be  used  with  the Doppler.  Parts  Part Number Main Unit SD1 Doppler(Non-Bluetooth version) 02.06.262535 SD1 Doppler(Bluetooth version)  02.06.262639 Accessories AA Alkaline Battery  01.21.064086 Normal Carry Case 01.56.465616 Coupling Gel    01.57.078170  Ultrasound Intensity and Safety Ultrasound in Medicine The  use  of  diagnostic  ultrasound  has  proved  to  be  a  valuable  tool  in medical practice. Given its known benefits for non-invasive investigations and  medical  diagnosis,  including  investigation  of  the  human  fetus,  the question of clinical safety with regards to ultrasound intensity arises. There is  no easy answer  to the question of safety surrounding the use  of diagnostic ultrasound equipment. Application of the ALARA (As Low As Reasonably Achievable) principle serves as a rule-of-thumb that will help you to get reasonable results with the lowest possible ultrasonic output. The  American  Institute  of  Ultrasound  in  Medicine  (AIUM)  states  that given its track record of over 25 years of use and no confirmed biological effects on patients or instrument operators, the benefits of the prudent use of diagnostic ultrasound clearly outweigh any risks. Ultrasound Safety and the ALARA Principle Ultrasound waves  dissipate  energy in  the  form of heat  and  can  therefore cause tissue warming. Although this effect is extremely low with Doppler, it is important to  know how  to control  and  limit patient exposure. Major governing  bodies  in  ultrasound  have  issued  statements  to  the  effect  that there  are  no  known  adverse  effects  from  the  use  of  diagnostic ultrasound,however, exposure  levels should always  be limited to As  Low As Reasonably Achievable (the ALARA principle). Explanation of MI/TI MI (Mechanical Index) Cavitations  will  be  generated  when ultrasound  wave  passes  through  and contacts  tissues,  resulting  in  instantaneous  local  overheating.  This phenomenon  is  determined  by  acoustic  pressure,  spectrum,  focus, transmission mode, and factors such  as states and properties of the tissue and  boundary.  This  mechanical bioeffect  is  a  threshold  phenomenon that occurs when a certain level of ultrasound output is exceeded. The threshold is related to the type of tissue. Although no confirmed adverse mechanical effects on patients or mammals caused by exposure at intensities typical of present  diagnostic  ultrasound  instruments  have  ever  been  reported,  the threshold  for  cavitation  is  still  undetermined.  Generally  speaking,  the higher  the  acoustic  pressure,  the  greater  the  potential  for  mechanical bioeffects; the  lower  the  acoustic frequency,  the greater the  potential  for mechanical bioeffects. The  AIUM  and  NEMA  formulate  mechanical  index  (MI)  in  order  to indicate the potential for mechanical effects. The MI is defined as the ratio of the peak-rarefactional acoustic pressure (should be calculated by tissue acoustic attenuation coefficient 0.3 dB/cm/MHz) to the acoustic frequency. MI = Pr, α fawf ×CMI CMI = 1 (MPa / MHz ) TI (Thermal Index) Heating  of  tissues  is  caused  by  absorption  of  ultrasound  when  the ultrasound  energy  is  applied. The  temperature  rise  is  determined  by  the acoustic  intensity,  exposed  area  and  thermo  physical  properties  of  the tissue. In  order  to  indicate the  potential  for  temperature  rise  caused  by thermal effects, the AIUM and NEMA  formulate thermal  index (TI). It  is defined as  the ratio of  the total acoustic power  to the acoustic power required  to raise the tissue temperature by 1ºC (1.8°F). According  to  different  thermo  physical  properties  of  the  tissue,  TI  is divided into three kinds: TIS, TIB and TIC. TIS  (Soft  Tissue  Thermal  Index):  It  provides  an  estimate  of  potential temperature rise in soft or similar tissues. TIB  (Bone  Thermal  Index):  It  provides  an  estimate  of  potential temperature rise when the ultrasound beam passes through soft tissue and a focal region is in the immediate vicinity of bone. TIC  (Cranial  Bone  Thermal  Index):  It  provides  an  estimate  of  potential temperature rise in the cranial bones or superficial bones. Measurement Uncertainties The  uncertainties in  the  measurements  were predominantly systematic  in origin;  the  random  uncertainties  were  negligible  in  comparison.  The overall systematic uncertainties were determined as follows: 1. Hydrophone Sensitivity: ± 12percent for intensity, ±  6 percent for pressure.  Based  on  the  hydrophone  calibration  report  by  ONDA.  The uncertainty was determined within ±1 dB in frequency range 1-15 MHz. 2. Digitizer: ±0.3 percent for intensity. ± 0.15 percent for pressure. Based  on  the  stated  accuracy  of  the  8-bit  resolution  of  the  Agilent DSO6012  Digital  Oscilloscope  and  the  signal-to-noise  ratio  of  the measurement. 3. Temperature:±2.4 percent for intensity uncertainty, ±1.2 percent for pressure uncertainty. Based on the temperature variation of the water bath of ± 1ºC (1.8°F). 4.  Spatial  Averaging:  ±  3.5 percent  for  intensity,  ±  1.75percent  for pressure. 5. Non-linear Distortion: N/A. No effects of nonlinear propagation were observed. Since all the above error sources are independent, they may be added on  an  RMS  basis,  giving  a  total  uncertainty  of  ±  12.73  percent  for  all intensity values reported, ± 6.37 percent for all the pressure values,,± 12.6 percent  for  the  Mechanical  Index,  uncertainty  of  ±12.73%  percent  for power,±0.15 percent for center frequency, ±6.87%for the MI.   Prudent Use Statement Although  no  confirmed  bioeffects  on  patients  caused  by  exposure  from present  diagnostic  ultrasound  equipment  have  ever  been  reported,  the potential  exists  that  such  bioeffects  may  be  identified  in  the  future. Therefore, the ultrasound should be used prudently. High levels of acoustic output  and  long  exposure  time  should  be  avoided  while  acquiring necessary clinical information. Reference for Acoustic Output and Safety 1.  “Bioeffects  and Safety of Diagnostic Ultrasound”  issued by AIUM  in 1993 2. “Medical Ultrasound Safety” issued by AIUM in 1994 3.  "Acoustic  Output  Measurement  Standard  for  Diagnostic  Ultrasound Equipment, Revision 3" issued by AIUM/NEMA in 2004 4.  "Standard  for  real-time  display  of  thermal  and  mechanical  acoustic output indices on diagnostic ultrasound equipment, Revision 2" issued  by AIUM/NEMA in 2004 5.  "Information  for  Manufacturers  Seeking  Marketing  Clearance  of Diagnostic Ultrasound Systems and Transducers" issued in 2008. 6.  “Medical  electrical  equipment—Part  2-37: Particular  requirements  for the basic safety and essential performance of ultrasonic medical diagnostic and monitoring equipment" issued by IEC in 2007. Acoustic Output Reporting Table for Track 1 Acoustic output reporting table for IEC60601-2-37(IEC60601-2-37, Edition 2.1, 2015-0, table 201.103) Transducer Model: SD1, Operating Mode: PW mode Index label MI TIS TIB TIC  At Surface Below Surface At surface Below Surface Maximum  index value 0.01 0.05  0.01 N/A Index  component value   N/A  0.05  NA  0.01   Acoustic Parameters pr.αat zMI                   (MPa) 0.02           P         (mW)   7.35  7.35 N/A P1x1 (mW)   N/A  N/A   zs(cm)   3.50    zb(cm)     3.70  zMI(cm) 3.70          zPII.α   (cm).α 3.70           fawf       (MHz) 3.00 3.00  3.00 N/A Other information prr         (Hz) 5000          srr(Hz) N/A          npps 1      Ipa.α  at zPII.α     (W/cm2) 0.02           Ispta.α at zPII.α  or zSII.α(mW/cm2) 5.69           Ispta  at zPII  or zSII (mW/cm2) 12.26           pr.  at zPII                       (MPa) 0.04                   Operating  control conditions Fixed  Acoustic Output Reporting Table for Track1(Non-autoscanning Mode) Transducer Model: SD1 ,Operating Model: PW Acoustic Output  MI ISPTA.3 (mW/cm^2) ISPPA.3 (W/cm^2) Global Maximum Value 0.01   5.69   0.02   Associated Acoustic Parameter Pr.3                             (MPa) 0.02       W0                               (mW)   7.35   8.97   fc                (MHz) 3.00   3.00   3.00   Zsp                (cm) 3.70   3.70   3.70   Beam dimensions X-6     (cm)  2.50   2.50   Y-6     (cm)  2.50   2.50   PD                               (usec) 72.25     72.25   PRF                                 (Hz) 5000     5000   EBD Az.       (cm)  2.50    Ele.       (cm)  2.50    Operating Control Conditions Fixed Standard Parameter Equal Contrast List IEC60601-2-37 Standard Parameters Parameter Note  Parameter Note pr.α Attenuated Peak-rare-factional  Acoustic Pressure  fawf Center Frequency, Acoustic Working Frequency pr Peak-rare-factional  Acoustic Pressure  X  -12dB Output Beam Dimensions P Output Power  Y zs Depth  for  Soft Tissue  Thermal Index  td Pulse Duration Pα(Zs)  Attenuated  Output Power  prr Pulse Repetition Frequency (Pulse
Repetition Rate) Ita.α(Zs) Attenuated Temporal-average Intensity  deq Equivalent Beam Diameter zbp Break-point Depth  Ipi.α at max MI Attenuated Pulse-average  Intensity  at the  point  of Maximum MI zb Depth  for  Bone Thermal Index  Aaprt -12dB Output Beam Area Ipi.α Attenuated Pulse-intensity Integral  MI  Mechanical Index Ipi Pulse-intensity Integral  TIS Soft  Tissue Thermal Index deq(Zb) Equivalent  Beam Diameter  at  the point of Zsp  TIB Bone Thermal Index TIC Cranial-bone Thermal Index  EMC Information Electromagnetic Emissions Guidance and manufacturer’s declaration – electromagnetic emission The  SD1  Ultrasonic  Pocket  Doppler  is  intended  for  use  in  the electromagnetic  environment  specified  below.  The  customer  or  the user of the device should assure that it is used in such an environment. Emission test  Compliance Electromagnetic environment - guidance RF emissions CISPR 11  Group 1 The  SD1Ultrasonic  Pocket Doppler uses RF energy only for  its  internal  function. Therefore,  its  RF  emissions are  very  low  and  are  not likely  to  cause  any interference  in  nearby electronic equipment. RF emission CISPR 11 Class B  The  SD1  Ultrasonic  Pocket Doppler is suitable for use in all  establishments,  including domestic  establishments  and those  directly  connected  to the public low-voltage power supply network that supplies buildings  used  for  domestic purposes. Harmonic emissions IEC/EN61000-3-2 Not applicable Voltage fluctuations /flicker emissions IEC/EN61000-3-3 Not applicable Electromagnetic Immunity Guidance and manufacture’s declaration–electromagnetic immunity The  SD1  Ultrasonic  Pocket  Doppler  is  intended  for  use  in  the electromagnetic environment specified below. The customer or the user of the device should assure that it is used in such an environment. Immunity test  IEC 60601 test level Compliance level Electromagnetic environment-guidance Electrostatic discharge (ESD) IEC 61000-4-2 8kV contact 15kV air 8kV contact 15kV air Floors  should  be wood,  concrete  or ceramic  tile.  If floor  are  covered with  synthetic material,  the relative  humidity should  be  at  least 30%. Electrical Fast Transient/Burst IEC/EN61000-4-4 ±2kV forpower supplylines ±1kV forinput/outputlines Not applicable Not applicable Surge IEC/EN61000-4-5 ± 1 kV line(s) toline(s) ± 2 kV line(s) to earth Not applicable Not applicable Voltage dips, short interruptions, and voltage variations on power supply input lines IEC/EN61000-4-11 <5%UT(>95% dip inUT) for 0.5cycle 40%UT(60%dip in UT) for5 cycles 70%UT(30%dip in UT) for25 cycles <5%UT(>95% dip inUT) for 5s Not applicable Not applicable Power frequency (50Hz/60Hz) magnetic field IEC61000-4-8 30 A/m  30 A/m Power  frequency magnetic  fields should be at levels characteristic  of  a typical  location  in a  typical commercial  or hospital environment. Electromagnetic Immunity Guidance and manufacture’s declaration – electromagnetic immunity The  SD1  Ultrasonic  Pocket  Doppler  is  intended  for  use  in  the electromagnetic environment specified below. The customer or the user of the device should assure that it is used in such an environment. Immunity test IEC 60601 test level Compliance level Electromagnetic environment-guidance    Conducted RF IEC61000-4-6        Radiated RF IEC61000-4-3      3 Vrms 150  kHz ~ 80 MHz 6Vrmsc)in  ISM bands between 0,15 MHz and80 MHz   10V/m 80 MHz ~ 2.7 GHz    3 Vrms 150  kHz  to 80 MHz 6Vrmsc)in ISM  bands between 0,15  MHz and 80 MHz          10 V/m 80  MHz  to 2.7 GHz Portable  and  mobile RF  communications equipment  should  be used  no  closer  to  any part  of  the  SD1 Ultrasonic  Pocket Doppler,  including cables,  than  the recommended separation  distance calculated  from  the equation  applicable  to the  frequency  of  the transmitter. Recommended separation distance: Pd 2.1150  kHz to 80 MHz Pd 2.1  80 MHz to 800 MHz Pd 3.2  800 MHz to 2.7 GHz d=6            /E  at  RF wireless communications equipment  bands (Portable  RF communications equipment  (including peripherals  such  as antenna  cables  and external  antennas) should  be  used  no closer  than  30  cm  (12 inches)  to  any  part  of the  SD1  Ultrasonic Pocket  Doppler, including  cables specified  by  the manufacturer). Where  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 metres (m). Field  strengths  from fixed  RF  transmitters, as  determined  by  an electromagnetic  site survey,a  should be  less than  the  compliance level in each frequency range.b Interference may occur in  the  vicinity  of equipment  marked with  the  following symbol:  NOTE1:At 80 MHz and 800 MHz, the higher frequency range applies. NOTE2: These guidelines may not apply in all situations. Electromagnetic propagation  is  affected  by  absorption  and  reflection  from  structures, objects and people. a  Field  strengths from fixed  transmitters,  such as  base  stations  for  radio (cellular/cordless)  telephones  and  land  mobile  radios,  amateur  radio, AM  and  FM  radio  broadcast  and  TV  broadcast  cannot  be  predicted theoretically with accuracy. To assess  the electromagnetic environment due to fixed RF  transmitters, an electromagnetic site survey should  be considered. If  the  measured  field strength  in the  location  in  which the SD1  Ultrasonic  Pocket  Doppler  is  used  exceeds  the  applicable  RF compliance  level above,  the  SD1Ultrasonic  Pocket Doppler should be observed  to  verify  normal  operation.  If  abnormal  performance  is observed, additional measures may be necessary, such as reorienting or relocating the SD1 Ultrasonic Pocket Doppler. b    Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m. c  The  ISM  (industrial,  scientific  and  medical)  bands  between  0,15  MHz and 80 MHz are 6,765 MHz to6,795 MHz; 13,553 MHz to 13,567 MHz; 26,957  MHz  to  27,283  MHz;  and  40,66  MHz  to  40,70  MHz.  The amateur radio bands between 0,15 MHz and 80 MHz are 1,8 MHz to 2,0 MHz, 3,5 MHz to 4,0 MHz, 5,3  MHz to 5,4 MHz, 7 MHz to 7,3 MHz, 10,1  MHz to  10,15 MHz,  14 MHz to  14,2 MHz,  18,07 MHz  to 18,17 MHz,21,0 MHz to 21,4 MHz, 24,89 MHz to 24,99 MHz, 28,0 MHz  to 29,7 MHz and 50,0 MHz to 54,0 MHz. Table-Test specifications for ENCLOSURE PORT IMMUNITY to RF wireless communications equipment Test Frequency (MHz) Brand a) (MHz) Service a) Modulation b) Maximum Power(W) Distance (m) IMMUNITY TEST LEVEL (V/m) 385 380-390 TETRA 400 Pulse modul1.8  0.3  27 ationb) 18Hz 450  430-470 GMRS 460, FRS 460 FM C) ±5 kHz deviation 1kHz sine 2  0.3  28 710 704-787 LTE Brand 13, 17 Pulse modulationb) 217 Hz 0.2  0.3  9 745 780 810 800-960 GSM   800/900,TETRA 800,iDEN 820, CDMA 850, LTE Band 5 Pulse modulationb) 18 Hz 2  0.3  28 870 930 1720 1700-1990 GSM 1800; CDMA 1900; GSM 1900; DECT; LTE Band 1, 3, 4,25;UMTS Pulse modulationb) 217 Hz 2  0.3  28 1845 1970 2450 2400-2570 Bluetooth, WLAN,802.11 b/g/n, RFID 2450, LTE Brand 7 Pulse modulationb) 217 Hz 2  0.3  28 5240 5100-5800 WLAN 802.11 a/n Pulse modulationb) 217 Hz 0.2  0.3  9 5500 5785 Note: If necessary to achieve the IMMUNITY TEST LEVEL, the distance between  the  transmitting  antenna  and  the  ME  EQUIPMENT  or  ME SYSTEM maybe reduce to 1m. The 1 m test distance is permitted by IEC 61000-4-3. a) For some services, only the uplink frequencies are included. b)  The  carrier  shall  be  modulated  using  a  50%  duty  cycle  square  wave signal. c) As an alternative FM modulation, 50% pulse modulation at 18 Hz may be used because while it does not represent actual modulation, it would be worst case Recommended Separation Distances Recommended separation distances between portable and mobile RF communications equipment and the SD1 Ultrasonic Pocket Doppler The  SD1  Ultrasonic  Pocket  Doppleris  intended  for  use  in  an electromagnetic  environment  in  which  radiated RF  disturbances  are controlled.  The  customer  or  the  user  of  theSD1  Ultrasonic  Pocket Doppler can help prevent electromagnetic interference by maintaining a  minimum  distance  between  portable  and  mobile  RF communications  equipment  (transmitters)  and  the  SD1  Ultrasonic Pocket  Doppleras  recommended  below,  according  to  the  maximum output power of the communications equipment. Rated maximum output power of transmitter (W) Separation distance according to frequency of transmitter (m) 150 kHz to 80 MHz Pd 2.1 80 MHz to 800 MHz Pd 2.1 800 MHz to 2.7GHz Pd 3.2 0.01  0.12  0.12  0.23 0.1  0.38  0.38  0.73 1  1.2  1.2  2.3 10  3.8  3.8  7.3 100  12  12  23 For  transmitters  rated  at a  maximum  output  power not  listed  above, the  recommended  separation  distance  d  in  meters  (m)  can  be estimated  using  the  equation  applicable  to  the  frequency  of  the transmitter,  where  P  is  the  maximum  output  power  rating  of  the transmitter in watts (W) according to the transmitter manufacturer. NOTE 1:  At 80  MHz and 800  MHz, the separation distance for  the higher frequency range applies. NOTE  2:  These  guidelines  may  not  apply  in  all  situations. Electromagnetic propagation is  affected by absorption and reflection from structures, objects and people.  Overall Sensitivity D  d A  B  VS Vn C  S ∑Ba  B B 1.58 3MHz 50 40.9 T  5#0 77.0 140 75 5.42 123.32 B 77.75 44.4 T  5#0 68.4 80 40 6.02 118.82 B 68.100 46.9 T  5#0 69.6 180 90 6.02 122.52 B 69.200 52.9 T  5#0 68.4 83 42 5.92 127.22 B 75.2.38  5 3 T  5#0 7 1 6 5. 12
3MHz  0 9.0 B 77.7.0 30 9 50 1.50 75 42.5 T  5#0 77.0 115 55 6.41 125.91 B 77.100 45.0 T  5#0 68.4 130 65 6.02 119.42 B 68.200 51.0 T  5#0 77.0 78 43 5.17 133.17 B 75.Doppler Frequency (Hz)  505  Velocity of Target (cm/s) 10 Note D: Diameter ofTarget Reflector(mm) A: Attenuation A(dB)) S:Overall Sensitivity (S=A+B+C)dB d: Distance (d)(mm)  VS:  Signal RMS (mV) C:Signal  to  Noise Ratio (dB)  ......log20 10 smrVsmrVCns B:Two-wayAttenuation(dB) B=∑Ba+Bw Vn:  Noise RMS (mV)  Troubleshooting Problem  Possible Cause  Solution Fail to power on, or shut down shortly after switching on Battery level is very low.  Replace the battery. Battery is not installed properly. Re-install the battery. Fail to switch on the Doppler as instructed. Touch the On/Off touch key for a while to power on the Doppler. The Doppler has malfunctions. Contact service personnel. Loudspeaker does not work. Sound volume has been turned down to the lowest level. Adjust sound volume to appropriate level. If the Doppler is configured with Bluetooth, fetal heart sound can be played by mobile phone. Set to play fetal heart sound by mobile phone or the Doppler on the APP. The Doppler has malfunctions. Contact service personnel. FHR cannot be displayed stably. There is strong interference source such as high frequency machines and mobile phones nearby. Use the Doppler away from strong interference sources. The fetal heart position has changed because of fetal movement. Relocate the Doppler to the best fetal heart rate monitoring position. Friction between the Doppler and patient’s abdomen causes false displaying. Find the best fetal heart rate monitoring position. Sensitivity is low and noise is too much. There is strong interference source such as high frequency machines and mobile phones nearby. Use the Doppler away from strong interference sources. The Doppler is not applied with coupling gel. Apply coupling gel to the Doppler. The Doppler is not placed at the best monitoring position. Relocate the Doppler to the best fetal heart rate monitoring position. The Doppler has malfunctions. Contact service personnel. Doppler cannot be connected to mobile phone. The Bluetooth of mobile is not open. Open the Bluetooth of mobile. The Doppler used is not configured with Bluetooth function. Use the Doppler with Bluetooth function. The Doppler has malfunctions. Contact service personnel.  Warranty and Service Warranty EDAN warrants  that EDAN’s  products meet the labeled specifications of the products  and will be free  from defects  in materials  and  workmanship that occur within warranty period.   The warranty is void in cases of: A. damage caused by mishandling during shipping. B. subsequent damage caused by improper use or maintenance. C. damage  caused  by  alteration  or  repair  by  anyone  not  authorized  by EDAN. D. damage caused by accidents. E. replacement or removal of serial number label and manufacture label. If a product covered by this warranty is determined to be defective because of  defective  materials,  components,  or  workmanship,  and  the  warranty claim  is  made  within  the  warranty  period,  EDAN  will,  at  its  discretion, repair  or  replace  the  defective  part(s)  free  of  charge.  EDAN  will  not provide a  substitute  product for use  when the  defective  product  is  being repaired. Contact Information If  you  have  any  question  about  maintenance,  technical  specifications  or malfunctions of devices, contact your local distributor.   Alternatively,  you  can  send  an  email  to  EDAN  service  department  at: support@edan.com.cn. EDAN INSTRUMENTS, INC. Address:  #15  Jinhui  Road,  Jinsha  Community,  Kengzi  Sub-District, PingshanDistric, 518122 Shenzhen, P.R. China Email: info@edan.com.cn Tel: +86-755-2689 8326 Fax: +86-755-2689 8330 www.edan.com.cn  Definition of Symbols No. Symbol Definition No.  Symbol  Definition 1  CE marking  10  Authorized Representative  in  the European Community 2  Disposal method  11   General symbol  for recovery/recyclable 3  Operating instructions 12   Refer to  User Manual (Background: Blue; Symbol: White) 4  Caution  13  MR Unsafe–Keep away  from magnetic resonance imaging (MRI) equipment 5  Type  BF applied part 14   Non-ionizing electromagnetic radiation 6   Part Number  15  Dustproof and waterproof degree  is IP22(rainproof) 7 Serial Number (Start with  H on battery compartment cover) 16  Federal (U.S.)  law restricts  this device to  sale by  or  on  the order  of  a physician. 8  Date  of Manufacture 17 FCC ID: SMQSD1MEDAN Federal Communications Commission: FCC  ID: SMQSD1MEDAN 9  Manufacturer

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