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Ecotron DT-703 Operator's Manual

Portable dental x-ray system
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DT-703
Portable Dental X-ray System
Operator's Manual
D/N: ECO-UM-DT703-001 Rev. J

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Summary of Contents for Ecotron DT-703

  • Page 1 DT-703 Portable Dental X-ray System Operator’s Manual D/N: ECO-UM-DT703-001 Rev. J...
  • Page 2 DT-703 OPERATOR’S MANUAL (This page intentionally left blank) Rev. J 2/75 ECOTRON Co., Ltd.
  • Page 3 DT-703 OPERATOR’S MANUAL CONTENTS 1. INTRODUCTION _______________________________________________________ 7 1.1 COMPONENTS _______________________________________________________________________________ 8 2. NOTICE OF GENERAL SAFETY AND SAFE OPERATION _______________________ 9 3. NOTICE OF SAFE BATTERY USE _________________________________________ 12 4. RADIATION SAFETY ___________________________________________________ 14 5. SAFETY AND SPECIFICATIONS __________________________________________ 15 5.1 SAFETY AND WARNING SYMBOLS _______________________________________________________ 15...
  • Page 4 DT-703 OPERATOR’S MANUAL 7. USER SETTING OPTIONS _______________________________________________ 59 7.1 HOW TO ENTER USER OPTION SETTINGS _______________________________________________ 59 8. TROUBLESHOOTING __________________________________________________ 61 8.1 ERROR AND WARNING MESSAGES _______________________________________________________ 61 8.2 TROUBLESHOOTING ______________________________________________________________________ 62 9. MAINTENANCE PROCEDURE _________________________________________ 63 9.1 GENERAL CAUTION _______________________________________________________________________ 63 9.2 MAINTENANCE ____________________________________________________________________________ 63...
  • Page 5 DT-703 OPERATOR’S MANUAL REVISION HISTORY Revision Number Date Description NOV 22, 2021 First Edition NOV 18, 2022 User Manual translation correction DEC 05, 2022 User Manual update for safety use DEC 28, 2022 User Manual update MAY 25, 2023 User Manual update...
  • Page 6 DT-703 OPERATOR’S MANUAL ADVISORY SYMBOLS The following advisory symbols are used throughout this manual. Their application and meaning are described below. WARNING Warning symbol indicates a potential hazard that may expose operators, service personnel and patients to serious injury, or radiation exposure.
  • Page 7 Radiation Safety Precautions DT-703 Portable Dental X-ray System is safe and unlikely to result in any side effects when used properly. The amount of radiation is very low, However, young children and pregnant women are more susceptible to the effects of ionizing radiation. In these cases, exposures should only be taken when the benefit of the diagnostic exam outweighs the risk of radiation exposure.
  • Page 8 DT-703 OPERATOR’S MANUAL 1.1 COMPONENTS (1) Component Part  DT-703 (Main Body)  Battery Charger  Backscatter Shield (0.5 mm Pb)  Cradle  Wrist Strap  User Manual (2) Option  Remote Exposure Switch  Rectangular Beam Limiting Cover (FOV 2x3) ...
  • Page 9 DT-703 OPERATOR’S MANUAL 2. NOTICE OF GENERAL SAFETY AND SAFE OPERATION This operating manual is designed to ensure proper use and operation of DT-703. The operator must read this operating manual thoroughly before using the equipment. Improper operation of the equipment may cause injury to the user and patient and may cause damage to the equipment. Pay particular attention to all the warnings, cautions and notes incorporated herein.
  • Page 10 IT IS THE USER'S RESPONSIBILITY FOR PROPER USE AND SAFE OPERATING PRACTICES OF THIS X-RAY SYSTEM. ECOTRON Co., Ltd. PROVIDES INFORMATION ON ITS PRODUCTS AND ASSOCIATED HAZARDS, BUT ASSUMES NO RESPONSIBILITIES FOR AFTER-SALE OPERATING AND SAFETY PRACTICES OF THE USERS.
  • Page 11 DT-703 OPERATOR’S MANUAL INCORRECT CONNECTIONS OR USE OF UNAPPROVED EQUIPMENT MAY RESULT IN INJURY OR EQUIPMENT DAMAGE. DO NOT EXCEED THE TUBE MAXIMUM OPERATING LIMITS SHOWN IN THE X-RAY TUBE DATA SECTION AT THE END OF THE OPERATOR’S MANUAL. INTENDED LIFE AND RELIABILITY WILL BE MAINTAINED O N L Y I F X - R AY SYSTEMS OPERATE WITHIN PUBLISHED SPECIFICATIONS.
  • Page 12 Non-standard or damaged batteries may present the risk of fire and explosion.  Make sure to use the battery charger only provided or approved by ECOTRON. Using an unauthorized charger may result in battery damage.  DO NOT expose batteries to heat or fire. Avoid storage in direct sunlight.
  • Page 13 DT-703 OPERATOR’S MANUAL DO NOT LEAVE THE BATTERY CONNECTED TO THE CHARGER FOR A DAY OR TWO AFTER BEING FULLY CHARGED. IF THE EQUIPMENT HAS BEEN SITTING IDLE FOR MORE THAN TWO WEEKS, CHARGE THE BATTERY BEFORE USE. IF THE POWER OF THE EQUIPMENT HAS BEEN ON FOR MORE THAN 10 DAYS WITHOUT BEING USED, THE BATTERY MAY HAVE DISCHARGED COMPLETELY.
  • Page 14 DT-703 OPERATOR’S MANUAL 4. RADIATION SAFETY  Users and operators of the X-ray system should wear appropriate personal protective equipment as required by local or State regulations.  Keep the time of radiation exposure to a minimum  Eliminate all unnecessary objects near the exposure zones.
  • Page 15 Main Label, Cradle Label, Date of manufacture X-ray Generator Label Authorized European Representative address Main Label Portable Dental X-ray System (DT-703) classified as class IIb according to the Regulation Main Label (EU) 2017/745 Annex VIII Rule 10. Refer to user manual...
  • Page 16 No practical design can incorporate complete protection for operators or service personnel who do not take adequate safety precautions. Service and operating personnel only authorized and trained adequately by ECOTRON should be allowed to work with this X-ray equipment. The appropriate personnel must be made aware of the inherent dangers associated with the servicing high-voltage equipment and the danger of excessive exposure to X-ray radiation.
  • Page 17 DT-703 OPERATOR’S MANUAL 5.2 COMPOSITION LABEL 5.2.1 LABEL LOCATIONS MAIN LABEL This main label is on the bottom of the device. (Example) X-RAY GENERATOR LABEL This label is on the bottom of the cone for the device. (Example) CRADLE LABEL This label is on the bottom of the cradle.
  • Page 18 DT-703 OPERATOR’S MANUAL 5.2.2 SYMBOLS ON THE PACKING OF PORTABLE DENTAL X-RAY SYSTEM SYMBOL DESCRIPTION Temperature limitation Humidity limitation Atmospheric pressure limitation Keep dry Fragile, handle with care This side up Recycle Rev. J 18/75 ECOTRON Co., Ltd.
  • Page 19 DT-703 OPERATOR’S MANUAL 5.3 APPLICABLE STANDARDS AND REGULATION The DT-703 complies with the regulatory requirements and design standards as follows: 1) SAFETY ● IEC/EN 60601-1 ● IEC/EN 60601-1-3 ● IEC/EN 60601-1-6 ● IEC/EN 60601-2-65 ● 21 CFR Subchapter J 2) EMC ●...
  • Page 20 DT-703 OPERATOR’S MANUAL 5.4 SPECIFICATION 5.4.1 CLASSIFICATION OF THE DEVICE CLASSIFICATION – EN 60601-1 ● Type of protection against short circuit: Internally powered medical electrical equipment ● Degree of protection against direct and indirect contact: TYPE B ● Degree of protection against ingress of water and particulate matter: IPX0 ●...
  • Page 21 DT-703 OPERATOR’S MANUAL 5.4.2 TECHNICAL SPECIFICATION (1) Portable Dental X-ray System (DT-703) Specification Tube Voltage [kV] 70 kV (fixed) Tube Current [mA] 3 mA (fixed) 0.02 – 0.5 sec Exposure Time [sec] -5 % (IEC 60601-1-65 standard limits the tube voltage of a Max.
  • Page 22 Standard IEC 60950-1 (UL) USE THE BATTERY CHARGER PROVIDED OR APPROVED BY ECOTRON ONLY. USING AN UNAUTHORIZED BATTERY MAY RESULT IN SERIOUS INJURY AND EQUIPMENT DAMAGE. FOR DETAILS ON USING THE BATTERY, SEE ‘3. NOTICE OF SAFE BATTERY USE’ ON PAGE 12.
  • Page 23 DT-703 OPERATOR’S MANUAL • POWER SUPPLY IS SPECIFIED AS A PART OF MEDICAL ELECTRICAL EQUIPMENT. • POWER PLUGS MAY HAVE VARIOUS SPECIFICATIONS FOR EACH COUNTRY. (4) Environment Specification  Operating Environment 10°C - 40 °C (50 °F - 104 °F)
  • Page 24 5.4.3 DOSIMETRY DATA The X-ray dose data is extracted from the X-ray Dose Test Report for the DT-703. The X-ray doses of the DT- 703 in the test report were measured in accordance with the IEC collateral standards. The DT-703 was designed in accordance with IEC 60601-1-3.
  • Page 25 DT-703 OPERATOR’S MANUAL 5.4.3.2 LEAKAGE DOSE SCOPE ① IEC 60601-2-65 203.12.4:2021 ② Michigan State Requlation REQUIREMENTS ① IEC 60601-2-65:2021 clause 203.12.4 In the LOADING STATE, the AIR KERMA due to LEAKAGE RADIATION from X-RAY SOURCE ASSEMBLIES, at any point on the outer suface of the equipment, when operated at the NOMINAL X-RAY TUBE VOLTAGE under conditions of LOADING corresponding to the reference LOADING conditions, shall not exceed 0.05 mGy in one hour.
  • Page 26 DT-703 OPERATOR’S MANUAL RESULTS The following exposure timetables show the test raw data results by testing a unit equipped with a cone corresponding to a focus-to-skin distance of 200 mm (8 inches) with the default collimator type (Ф 60). THE RESULT...
  • Page 27 DT-703 OPERATOR’S MANUAL 5.4.3.3 SCATTERED DOSE SCOPE IEC 60601-1-65 203.13 REQUIREMENTS MEDICAL ELECTRICAL EQUIPMENT shall be provided with means to optionally allow actuation of the EXPOSURE from a PROTECTED AREA after installation. Relevant instructions shall be given in the ACCOMPANYING DOCUMENTS.
  • Page 28 DT-703 OPERATOR’S MANUAL MEASURED METHOD 1 PMMA Phantom aligned to 280 mm away from Focal Spot Max. Exposure Condition Measure point: 500 mm from PMMA Phantom RESULT (HORIZONTAL PLANE) [μR] DIRCTION WITH SHIELD 116.2 0° 29.5 30° 36.6 60° 41.8 90°...
  • Page 29 DT-703 OPERATOR’S MANUAL MEASURED METHOD 1 PMMA Phantom aligned to 280 mm away from Focal Spot Max. Exposure Condition Measure point: 500 mm from PMMA Phantom RESULT (VERTICAL PLANE) [μR] DIRCTION WITH SHIELD 0° 22.6 30° 32.3 60° 31.6 90°...
  • Page 30 DT-703 OPERATOR’S MANUAL MEASURED METHOD 2 PMMA Phantom aligned to 280 mm away from Focal Spot Max. Exposure Condition Measure point: 1.0, 1.5, 2.0 m from PMMA Phantom RESULT (HORIZONTAL PLANE) [μR] DIRCTION 1.0 m 1.5 m 2.0 m 41.9 22.5...
  • Page 31 DT-703 OPERATOR’S MANUAL MEASURED METHOD 2 PMMA Phantom aligned to 280 mm away from Focal Spot Max. Exposure Condition Measure point: 1.0, 1.5, 2.0 m from PMMA Phantom RESULT (VERTICAL PLANE) [μR] DIRCTION 1.0 m 1.5 m 2.0 m 44.4 23.1...
  • Page 32 DT-703 OPERATOR’S MANUAL 5.4.4 MECHANICAL SPECIFICATION DT-703 Dimension (unit: mm) ITEM DESCRIPTION Dimension [mm] 259 (L) x 277 (H) x Ø 165 Main Body Weight [kg] 1.6 kg Round Type FOV: Ø 60 X-ray Beam X-ray Beam Limiting Area [mm]...
  • Page 33 DT-703 OPERATOR’S MANUAL 5.5 CUSTOMER SUPPORT Address any questions regarding Portable Dental X-ray system operation to: ECOTRON Co., Ltd. 404, 504, 505Ho, Hanshin IT Tower II, 47, Digital-ro 9-gil, Geumcheon-Gu, Seoul 08511, Republic of Korea TEL: +82-2-2025-3760, FAX: +82-2-2025-3764 E-mail: export@ecotron.co.kr Web-site: http://www.ecotron.co.kr...
  • Page 34 6. SYSTEM FEATURES Portable Dental X-ray System (DT-703) is a radiologic device for dental radiographic diagnoses. It should be applied for the radiographic diagnosis and operated by a licensed dentist, hygienist or a dental radiologic technologist by the law of the state.
  • Page 35 DT-703 OPERATOR’S MANUAL 6.1 GENERAL VIEW OF EQUIPMENT MAIN BODY ITEM DESCRIPTION Backscatter Shield Shields from the backscattering radiation X-ray Beam Limiting Device Limits the X-ray exposure area. (FOV: Ø 60 mm) X-ray Exposure Button Press the button for X-ray exposure...
  • Page 36 DT-703 OPERATOR’S MANUAL CONTROL PANEL ② ① ⑤ ③ ④ ⑦ ⑥ ⑧ ⑨ ⑩ ⑪ ITEM DESCRIPTION Select the Sensor mode: DR, CR, F-speed Film (Do not use Sensor Mode Selection D-speed film) Battery Charging & Level Indicates battery charging & battery remaining level...
  • Page 37 DT-703 OPERATOR’S MANUAL CRADLE ITEM DESCRIPTION Blue: Battery charging in progress Charging Indicator Green: Battery fully charged and stand by Battery Charger Port Connect the battery charger Rev. J 37/75 ECOTRON Co., Ltd.
  • Page 38 DT-703 OPERATOR’S MANUAL 6.2 OPERATION 6.2.1 POWER ON / OFF ① Power on the system referring to the following figure. ② The following displays and indicators light up:  Sensor mode display  Battery charging & level display  X-ray exposure time display ...
  • Page 39 DT-703 OPERATOR’S MANUAL 6.2.2 OPERATION MODE SENSOR SELECTION Press the Enter Button to get into the sensor mode and see the sensor mode area flickers. Select the desired sensor mode and press the Enter Key using the Left and Right Key.
  • Page 40 DT-703 OPERATOR’S MANUAL PATIENT TYPE Press the Enter Button for the patient type setting. When the patient type area flickers, use the Left & Right Key to select the desired patient type and press the Enter Key. SENSOR MODE ICON...
  • Page 41 DT-703 OPERATOR’S MANUAL TOOTH TYPE Press the Enter Button for the tooth type setting. When the tooth type area flickers, use the Left & Right Key to select the desired tooth type and press the Enter Key. SENSOR MODE ICON...
  • Page 42 DT-703 OPERATOR’S MANUAL X-RAY EXPOSURE TIME Press the Enter Button for the X-ray exposure time setting. When the X-ray exposure time area flickers, use the Left & Right Key to adjust the desired the X-ray exposure time and press the Enter Key.
  • Page 43 DT-703 OPERATOR’S MANUAL 6.2.3 POSITIONING POSTIONING THE PATIENT In order to obtain a high-quality intra-oral radiography image, align the patient positioning, the portable dental X-ray system, and the intra-oral image receptor as directed in the entire exposure process. ① Direct the patient to wear the lead apron to protect from scatter radiation.
  • Page 44 DT-703 OPERATOR’S MANUAL ③ Place the cone of the portable dental x-ray system in the targeted area for imaging. When holding the device, it is recommended to grip the handle by one hand and place the other on the underside of the cone of the X-ray system as shown in the following picture.
  • Page 45 DT-703 OPERATOR’S MANUAL 6.2.4 POSITIONING INSTRUCTIONS PARALLEL RADIOGRAPHY Position the sensor parallel to the long axis of the tooth using the position indicating device (PID). ISOMETRICAL RADIOGRAPHY Position the position indicating device (PID) perpendicularly to a virtual angle bisector, a line that divides the angle between the long axis of the tooth and the sensor.
  • Page 46 DT-703 OPERATOR’S MANUAL MAXILLARY INCISOR The x-ray beam is directed downward at 45°. TEETH ANGLE OF INCLINATION Incisor Maxilla +45° MANDIBULAR INCISOR The x-ray beam is directed upward at 25°. TEETH ANGLE OF INCLINATION Incisor Mandible -25° Rev. J 46/75...
  • Page 47 DT-703 OPERATOR’S MANUAL MAXILLARY CANINE The x-ray beam is directed downward at 45°. TEETH ANGLE OF INCLINATION Canine Maxilla +45° MANDIBULAR CANINE The x-ray beam is directed upward at 20°. TEETH ANGLE OF INCLINATION Canine Mandible -20° Rev. J 47/75...
  • Page 48 DT-703 OPERATOR’S MANUAL MAXILLARY MOLAR AND PREMOLAR The x-ray beam is directed downward at 30°. TEETH ANGLE OF INCLINATION Molar and Premolar Maxilla +30° MANDIBULAR MOLAR AND PREMOLAR The x-ray beam is directed upward at 5°. TEETH ANGLE OF INCLINATION...
  • Page 49 DT-703 OPERATOR’S MANUAL BITEWINGS For a bitewing exposure, the patient closes their teeth during exposure on the image receptor holder. The x-ray beam is directed downward at +5° - +8°. TEETH ANGLE OF INCLINATION Bitewing exposure +5° - +8° Rev. J 49/75 ECOTRON Co., Ltd.
  • Page 50 DT-703 OPERATOR’S MANUAL PROPER POSITIONING THE IMAGE RECEPTOR Position the image receptor properly (for information about the proper placement of the image receptor, please refer to ‘6.2.4 Positioning Instructions’ on page 45).  Improper position of the image receptor may result in errors on the radiograph, such as distorted teeth and roots, elongation, magnification, and overlapping contacts.
  • Page 51 As shown in graphic representations, maximum protection (green area) from backscatter radiation (red area) exists when positioning the DT-703 near the patient is perpendicular to the operator (with the patient’s head tilted if needed). Non-perpendicular to the sensor may expose the operator...
  • Page 52 DT-703 OPERATOR’S MANUAL When using the PID, align the cone of the X-ray device perpendicular to the target receptor, as shown in the following figure. ONCE THE PID IS PROPERLY ALIGNED, INSTRUCT THE PATIENT NOT TO MOVE. Rev. J 52/75...
  • Page 53 DT-703 OPERATOR’S MANUAL 6.2.5 X-RAY EXPOSURE THE OPERATOR MUST INSTRUCT THE PATIENT TO REFRAIN FROM MOVING DURING THE ENTIRE EXPOSURE PROCESS. ① Instruct the patient not to move. ② Press the exposure button for X-ray irradiation. ③ During the X-ray irradiation, the exposure status is displayed as follows: ...
  • Page 54 DT-703 OPERATOR’S MANUAL 6.2.5.1 REMOTE EXPOSURE SWITCH The Remote Exposure Switch lets the operator control image acquisition outside the X-ray room. Press and hold the Remote Exposure Switch until the acquisition ends. Premature release of the Remote Exposure Switch will abort image acquisition.
  • Page 55 DT-703 OPERATOR’S MANUAL 6.2.6 USING BATTERY The battery level indicator is on the control panel. X-ray irradiation is impossible if a low battery displays (Lbt sign and lightning sign blinking). Recharge the battery immediately for use. Level 3 Level 2...
  • Page 56 DT-703 OPERATOR’S MANUAL CHARGING THE BATTERY ① Connect the battery charger to the cradle ② Place DT-703 on the cradle as shown below. ③ After completing the battery charge, the cradle LED turns on green. CHARGING CHARGING FULL The battery is a replaceable and degrades over time, requiring frequent charging. If the battery life after a full charge lasts only half the time that was first purchased, contact the customer service center to purchase a new battery.
  • Page 57 DT-703 OPERATOR’S MANUAL BATTERY REPLACEMENT ① Use a screwdriver to unscrew the battery bay access cover. ② Open the cover and remove the battery from the battery bay and disconnect the battery cable form the device connector. ③ Install the new battery in the reverse order of removal.
  • Page 58 DT-703 OPERATOR’S MANUAL 6.2.7 DIMMING, SLEEP AND POWER SAVE MODE DT-703 has dimming, sleep, and power-saving mode to save the battery. DIMMING MODE ① The device's dimming mode is activated when idle for over 10 minutes. The control panel becomes dark when the dimming mode is activated, as shown below.
  • Page 59 DT-703 OPERATOR’S MANUAL 7. USER SETTING OPTIONS 7.1 HOW TO ENTER USER OPTION SETTINGS The method to enter the user option setting mode is as follows. ① Power switch on ② Press the enter key and right keys simultaneously for more than 1 seconds. ( ③...
  • Page 60 DT-703 OPERATOR’S MANUAL DEVICE LOCK SETTING DISPLAY DISCRIPTION ① In the user option setting mode, press the enter key ) after moving to ‘S.03’ menu using the left and right keys. ② Select the lock (U.L1) or unlock (U.L0) option using the left and right keys and press the enter key.
  • Page 61 DT-703 OPERATOR’S MANUAL 8. TROUBLESHOOTING The information indicating a system malfunction is listed below. If the troubleshooting table below does not include the device problem experienced, contact the manufacturer or the local sales agent. The problems listed in the troubleshooting table may not be exhaustive.
  • Page 62 DT-703 OPERATOR’S MANUAL 8.2 TROUBLESHOOTING PROBLEM ITEM CAUSE ACTION The power switch won’t turn on Turn the device power switch off and properly. turn it back on Recheck after charging the battery with Battery discharged The equipment won’t turn the cradle...
  • Page 63 (S/N) indicated on the device. 9.2 MAINTENANCE ECOTRON requires periodic constancy tests every six months to ensure image quality and the safety of the patient and operator. Only ECOTRON authorized technicians can perform inspection and service of this equipment. Contact ECOTRON service center or local ECOTRON representative for technical assistance.
  • Page 64 DT-703 OPERATOR’S MANUAL 9.2.1 MAINTENANCE CHECKLIST ALWAYS TURN OFF THE DEVICE BEFORE PERFORMING ANY MAINTENANCE. CHECK ITEM PERIOD Before using the device, ensure that the device is clean and ready for use. Daily After using the device, make sure to turn off the power.
  • Page 65 DT-703 OPERATOR’S MANUAL SCHEDULE 9.2.2 MAINTENANCE Maintenance / control item Period Inspector kV: (Lower than management standards of IEC 60601-2-65) Service personnel with It should be within the accuracy range of -5% when the kV value is 70 1 Year...
  • Page 66 DT-703 OPERATOR’S MANUAL 9.3 CLEANING BEFORE CLEANING THE DEVICE, MAKE SURE TO TURN OFF THE DEVICE.  Clean the device surfaces with a soft cloth moistened with an alcohol-based non-corrosive solution.  The soft cloth should be damp but not dripping wet.
  • Page 67 DT-703 OPERATOR’S MANUAL 10. DISPOSAL OF WASTE In order to reduce environmental contamination, this equipment is as safe as possible to use and dispose of. For proper disposal of the device after its useful service life, observe local environmental regulations regarding the disposal of possible hazardous materials used in the device.
  • Page 68 SCOPE & DURATION OF WARRANTY Portable Dental X-ray System (DT-703) manufactured by ECOTRON Co., Ltd. is warranted to be free from defects for two years after the purchase date (Exception: One year for X-ray tube and Six months for the battery). If, during the warranty period, the product purchased is defective, it will be repaired free of charge, including the shipping charge.
  • Page 69 DT-703 OPERATOR’S MANUAL APPENDIX A TECHNICAL CHART [Unit: sec] Adult (Big) Adult (Normal) Child Incisor 0.12 0.11 Canine 0.16 0.14 0.13 Molar / Premolar 0.18 0.16 Bitewing 0.18 0.16 Adult (Big) Adult (Normal) Child Incisor 0.16 0.14 0.13 Canine 0.21 0.19...
  • Page 70 Emission test Compliance Electromagnetic setting: guidelines Since the DT-703 only uses RF energy for internal functions, it RF emission Group 1 has very low RF emissions and normally causes no interference CISPR 11 to neighboring electronic devices.
  • Page 71 DT-703 OPERATOR’S MANUAL Magnetic field in the 3A/m 3A/m The magnetic field in the source frequency source frequency should be (50/60Hz) equivalent to the those of IEC 61000-4-8 general commercial or hospital settings. Note: The UT is the main AC voltage before the test standards have been applied.
  • Page 72 DT-703 OPERATOR’S MANUAL Note 1: The high-frequency range is applied at 80MHz and 800MHz. Note 2: This guideline does not apply in all situations. Electromagnetic waves may be affected through absorption into and reflection from structures, objects and people. Guidelines and manufacturers: electromagnetic tolerance It is very difficult to accurately predict the magnetic field strength of wireless (mobile/wireless) telephones, land mobile radio base station, amateur wireless, AM, FM wireless and TV broadcasting systems.
  • Page 73 DT-703 OPERATOR’S MANUAL APPENDIX C CHARACTERISTICS OF X-RAY TUBE (OX/70-3)  Rating Charts  Emission Characteristics Rev. J 73/75 ECOTRON Co., Ltd.
  • Page 74 DT-703 OPERATOR’S MANUAL  Thermal Curves Rev. J 74/75 ECOTRON Co., Ltd.
  • Page 75 DT-703 OPERATOR’S MANUAL APPENDIX D PEDIATRIC X-RAY IMAGING To help reduce the risk of excessive radiation exposure for pediatric patients, please follow the ALARA (As Low As Reasonably Achievable) principle and seek to reduce radiation dose to only the amount necessary to obtain images that are adequate clinically.