- Frank`s Hospital Workshop
Contents
1. 7 segment 1 enable signal 0 2 7 segment 2 enable signal Pin 1 2 E EN 6 EE 8 LEDALM 9 10 11 12 13 14 15 16 18 VOL_UP2 VOL DN2 VOL D N 20 REC ZOOM 21 UC REF 1 22 ALM REC 23 SEGO 24 565 n 25 SEG2 1 1 22 35 see 36 SEGF_ 40 GND 7 D dual S single L TPH Connector BT 300 Service Manual V2 0 O Description open TPH strobe O signal TPH strobe 1 signal 23 BT 300 Service Manual V2 0 9 TPH CK O TPHClocksignal n 10 TPH LE O TPH LE signal active low 11 TPHDI O 12 GND 13 GND 14 15 N Printer Door Check Connector 114 1 signal 2 5267 2 O Printer Paper Check Connector 24 BT 300 Service Manual V2 0 TAH C04 RIGO 5267 3 R159 Description 1 LL 0 Level signal DVP5 5V power 3 PAP Paper check signal 2 2 3 Key Board e Circuit Diagram 25 BT 300 Service Manual V2 0 5 SEG 6 1 HET DP X SEG D 1 di 16 15 ti HEADER 20X2 ti ti ti x sut sw Wi VOL UPT ALM VOL DNIIVOL UP VOL UP los ol VOL DN2IVOL DN lop 5l V v A v su 03 LED ALM NN ALWIREC la al l LED A2. BT 300 Service Manual V2 0 Table of Contents TERMS OF 111 3 CAUTION Mou 3 HOW TO CONTACT US ua ke pok RE rn x da ki irite ae ka pan 4 DEFINITION OF WARNING CAUTION NOTE 6 GENERAL PRECAUTION ON 7 GENERAL PRECAUTION ON ELECTRIC SAFETY 8 SECTION 1 GENERAL INFORMATION 9 1 1 Product Over Wu NANANA 9 1 2 Product PEATUTCS re e kai afon AA 10 1 3 Product Configuration 10 SECTION 2 TECHNICAL DESCRIPTION 11 2 2 Main rra cae n n kk wa 12 1 2 GOMpPOSINONG n5 odi cese bc ka a aa e ag eaaa 12 2 2 Main Board aaa etr cR a a Ur aga ant 13 2 2 3Key BOAFG ooa i 25 2 3Doppler POP 26 23 1 COMPOSMO scs ane AA NAG AINA NAAN AGA 27 Z AUG Probe 52 d ER kan n n kek koka ka 27 2 4 1 CompoSILOLDL asing bear kk tinea NA ag VERE a EAE eat 27 2 4 2 Technical D sSenplion pab ai ak pa ON 28 SECTION 3 TROUBLESHOOTING 30 BT 300 Service Manual V2 0 3 1 Warning Sign Occasion and Status Checking 30 Alarm Occasion and Status Checking Up 31 3 2 Troubleshooting on the Other Situation 31 SECTION 4 MAINTENANCE AND CL
3. C5402 by TI company and the fetal heart fate is calculated at 0 25 second using auto correlation algorithrh The output is transmitted to CPU to display and record TX Burst gen ration circuit U33 034 UB7 42 generate the burst signal for driving the ultrasound 5 nsor and control signal for demodulation The timing diagram is below lt Timing Diagram gt 3 47KHz T3 CA 16 BT 300 Service Manual V2 0 l HE Receive Time DOP1 P DOP1 1 0 DOP2 P DOP2 1 0 A ME gO CPU circuit CPU U43 is PIC16F77 when it has malfunction CPU resets itself using MM1075 U17 watch dog IC FHR and UA are displayed on the 7 segment and signal quality is displayed on the LED Thermal print is operated 24V CPU controls the stepping motor and TPH to record the calculated data on the thermal paper Door open or paper out is recognized by sensor If that situation happens during recording then CPU stops recording and displays See Prn on the display panel Time and date are calculated automatically at the DS12C887 U18 CPU reads the value and records on the recording paper Each key is recognized by CPU which performs each operation e Connection A Doppler Probe Connector BT 300 Service Manual V2 0 STIMULATOR ST Stimulat EE Acoustic stimulator enable signal or 2 GND Ground AVP12 O 12V power 5 GND Gro
4. EANING 33 4 1 Maintenance and 33 AU NON mE 34 4 2 Regular Inspection 34 SECTION 5 SPECIFICATIONS eere 35 BT 300 Service Manual V2 0 Terms of Warranty This product is manufactured and examined by strict quality control and inspection system Compensation standard concerning repair replacement and refund of the product complies with Consumer s protection law issued by Economic Planning Dept BT 300 is guaranteed by BISTOS Co Ltd And its warranty period is two years from the date of purchase Warranty repair or replacement will be made by BISTOS Service Center with free of charge during warranty period if properly used under normal condition in accordance with the instructions for use In the event of a malfunction or failure during warranty period customer should inform BISTOS Co Ltd of the model name serial number date of purchase and explanation of failure about the defective equipment Caution Federal law restricts this device to sale by or on the order of a physician BT 300 Service Manual V2 0 How to contact us BT 300 Service Manual V2 0 BT 300 Service Manual V2 0 You can contact us the following address and telephone numbers for services and supplies Product and Order Inquiries Service Request and Technical Support Our Website amp E
5. LNIREC LED INFO LED 26 a bi pi NV LED HR H W VE REF aol kod gn Bislos RED Dept n a A t iu Tea i n T e Technical Description FHR and UA are displayed on the 7 segment U1 U2 U3 and signal guality is displayed on the two colors LED D2 D4 D3 D5 D6 D7 LED display the state of alarm recording zoom and information operation respectively SW1 SW7 are key switches D1 is displayed the volume step e Connection This connection is same as the key board connection in main board 2 3 Doppler Probe 26 BT 300 Service Manual V2 0 2 3 1 Composition Ultrasound Sensor Doppler Case 6 Probe Cable 2 4 UC Probe 2 4 1 Composition 27 BT 300 Service Manual V2 0 UC Board UC Case 6 Probe Cable 2 4 2 Technical Description e Circuit Diagram 28 BT 300 Service Manual V2 0 1 1 R CE ji a x a H Rit H t 4 Ele m NM Cia 9 Uu pp N z 616 26 26 4 Pp pp AN SU Av SY BY TV BY AV 101014 ee ko Te 7301 DIS NG PROBE CIRCUIT by ROD Dep e Technical Description The uterine contraction is converted to electrical signal by using pressur
6. Temperature Operating Humidity Storage Temperature 60 C 131 F Storage Humidity Operating Atmospheric Pressure Storage Atmospheric Pressure Pulsed Doppler Wave Autocorrelation Processing 3 5 KHz 128 us 1MHZ 10mW cm2 50 240 BPM 2 of range lt 10 A 0 99 Relative Units 5 0Vdc 1 Relative Unit DC 0 5Hz 100 250VAC 50 or 60Hz 80VA max 19 1cm 7 5 in 18 7cm 7 4 in 20 1cm 7 9 in 6Kg 13 2 165 10 C 50 F to 40 C 104 F 30 85 non condensing 10 C 14 F to 20 95 non condensing 70 ka 106kPa TO kPa 106kPa BT 300 Service Manual V2 0 e Functional Features FM UC Dual Fetal Movement External Type Reference Zeroing Control Printer Thermal Array Type Print Speed 10 20 30 mm min Paper Feeding Function Print Contrast 1 2 3 steps Auto Print Period 0 Off 10 20 30 40 50 60min Display 7 Segment LED 2 Channels HR UC BT 300S 3 Channels HR1 HR2 UC BT 300D Indicators Heart Rhythm Green Stable Red Unstable Alarm On Off State Print On Off State AC Power Green LED Sound Doppler Sound with Volume Control 8 steps Alarms Sound exceed FHR Range Information Sound Doppler Probe Off Paper Off Door Open Watch Dog Set up Function Alarm Upper Lower Limit Value Event Mark Function Print Speed Zoom in Function Print Contrast Doppler2 Offset Function Auto Print Period External Link RS 232C for Central Monitoring O
7. action of a pregnant woman and basic information of the equipment with a provided thermal printer e BT 300 is capable of Monitoring of fetal heart rate with one or two pulsed Ultrasound Transducer s e BT 300 can record automatically with thermal printer through printer setup BT 300 is compact and light potable and easy to use BT 300 uses a free voltage 100 240VAC input power adaptor 1 3 Product Configuration BT 300 system consists of the followings Unpack the package and check out the following items Also be sure to check to see any damage of main body and accessories BT 300 Main Body Ultrasound Transducer Doppler Probe 2 EA 1 EA for BT 300S Tocotransducer UC Probe LEA Event Marker 1EA Thermal Print Paper 2EA 6 Power Adaptor 1EA Power Cord 1EA Ultrasound Gel 1EA Abdominal Transducer Probe Belt 3 EA 2 EA for BT 300S User s Manual 1EA BT 300 Service Manual V2 0 BT 300 Main Main body of BT 300 2 year Warranty Ultrasound Transducer for RoPRIERPrOBE Measuring FHR Pressure Sensor Tocotransducer for Measuring Uterine contraction UC Probe Used for a specific event for E vent Marker example fetal Movement Z folded type 4 Paper Z folder type thermal Paper Used for Holding Doppler Probe ROPE RAI and or UC Probe Adaptor for transform AC Power to Power Adaptor DC 16V Power Cord AC Power cord Ultrasound Gel Ultrasonic coupling gel Section 2 Techni
8. anual V2 0 NS Key Board Q Print Engine G Main Board 2 2 Main Board e Circuit Diagram lt Analog Part gt 13 BT 300 Service Manual V2 0 lt Digital Part gt 14 BT 300 Service Manual V2 0 e ee j CI L n e Technical Description 1 Doppler signal generation circuit The burst signal drives the ultrasound sensor using by Q1 15 BT 300 Service Manual V2 0 03 The LC impedance matching circuit is used to match the received ultrasound signal and the signal is amplified about 40 dB at Q5 U2 demodulates by 1MHz to
9. cal Description 2 1 General BT 300 is capable of monitoring fetal heart rate and maternal uterine contractions Simultaneous trends of fetal heart rates FHR and uterine activity UA are plotted by the built in chart recorder FHR and UA are displayed continuously at numeric display on the front panel Measuring fetal heart rate is using 1MHz ultrasound wave which transmits the burst pulse to the 7 ultrasound sensors about 3 47KHz periodically This wave is reflected to the part of different medium 11 BT 300 Service Manual V2 0 s Particularly the reflection wave is shifted from moving targets like heart blood etc This phenomenon is a Doppler effect This reflected signal is converted to electrical signal and it can get some useful information by many other processes Also BT 300 measures the uterine contraction of a pregnant woman by pressure sensors and displays waveform by means of numerical values This waveform informs the period and magnitude of the uterine contraction DSP digital signal processor calculates the fetal heart rate and uterine contraction and transmits them to CPU by serial communication CPU displays these values to the 7 segment records on the thermal paper and transmits to serial port for central monitoring system CPU performs these operations by input of key Refer to the operator s manual for more detailed operations 2 2 Main Unit 1 2 Composition 12 BT 300 Service M
10. e sensor strain gauge This signal is compensated the difference of production by adjusting the offset and gain And it is transmitted to main board e Connection UC OUT pes 1 GNDI 3 12 SGND1 J Shield ground 29 BT 300 Service Manual V2 0 Section 3 Troubleshooting 3 1Warning Sign Occasion and Status Checking After the monitor power on Information sound rings once If the ultrasound transducer pulls out of the connector during monitoring error 4 it rings once every 3 seconds until the transducer is connected to the connector or pressing the ALM alarm pushbutton causes the alarm function disable 3 When the REC record pushbutton is pressed for recording in case of print door open or under recording when the door is opened it rings once every 3 seconds and ERR 1 REC ERR 1 in BT 300D appears in the FHR and UC display as shown below until the door is closed or pressing the ALM alarm pushbutton causes the alarm function to be disabled and return to the normal monitoring mode Figure 4 1 Front Panel for 3005 Figure 4 2 Front Panel for BT 300D 4 When the REC record pushbutton is pressed for recording in case of paper empty or printer door open or when the paper runs out under recording it rings once every 3 seconds and ERR 2 REC ERR 2 in BT 300D appears in the FHR and the UC display until the paper is installed or pressing the ALM alarm pushbutton cause
11. get the Doppler signal and the most adequate signals are abstracted through the 4 stages filter BT 300 uses the 1MHz ultrasound so the Doppler frequency is low frequency about 100 200Hz The OP Amps U6A U6D perform the frequency doubling by full wave rectifier to hear clearly when user hears the fetal heart signal After using the amplifier and LPF this signal is adjusted the volume U5 8 steps and transferred to audio amplifier U8 The other rectifier circuit U4A U4D is used to calculate the heart rate this signal is amplified and used LPF for envelope detection And adjust the DC level to fit in the input level of U25 A D converter 0 3 3V 2 Sound output circuit The signal of Doppler DOP1S DOP2 5 alarm and information are summed in U7A The signal for alarm bee bee bee and information ding dong is PWM signal generated from U43 This signal is converted to be able to hear using RC low pass filter This signal and Doppler signal are integrated and output to speaker by audio amplifier U8 A D converter amp DSP circuit MCP3204 U28 A D converter is possible to convert to 4 channels and converts each signal DOP_1HR DOP2_HR UC to 12 bits digital signal by 200Hz periodically The range of analog input signal of this A D converter must be in 0 3 3V The converted digital signal is transmitted to DSP U16 by serial and calculated an useful value using many signal processing techniques DSP is TMS320V
12. he material that is not approved it may cause damage 33 BT 300 Service Manual V2 0 to the product In this case the product will not be guaranteed even within warranty period Check the main unit and the probes thoroughly after cleaning Do not use the old and damaged equipment To keep the machine clean apply alcohol on a soft cloth and scrub the body and the probe once a month Do not use lacquer thinner ethylene or the oxidizing substance Keep the probes from dust or stain Wipe the cable with a soaked cloth that is wet with warm water 40 C 104 and with the clinical alcohol once a week Do not soak the machine or the probes into any liquid or detergent Keep the machine or the probes away from any liquid 4 2Regular Inspection Perform the periodical safety inspection on BT 300 once a year For the inspection details see the service manual provided by BISTOS Co Ltd 34 BT 300 Service Manual V2 0 Section 5 Specifications e Ultrasound Mode Technique Pulse Repetition Frequency Pulse Duration Center Frequency Intensity Heart Rate Counting Range FHR Accuracy Leakage Current Dual Fetus e Uterine Activity Mode Range Tocotransducer Excitation Voltage Resolution Bandwidth Tocotransducer e Power Requirements Line Voltage Line Frequency Power Consumption e Physical Characteristic Height Width Depth Weight e Environmental Characteristics Operating
13. mail address Oversea Sales Team BISTOS Co Ltd 201 2F 239 15 Gasan Dong Geumcheon Gu Seoul Korea Tel 82 2 862 0642 Fax 82 2 862 0644 Customer Service Team BISTOS Co Ltd 201 2F 239 15 Gasan Dong Geumcheon Gu Seoul Korea Tel 82 2 862 0642 Fax 82 2 862 0644 Website http www bistos co kr Email bistos bistos co kr Definition of Warning Caution Note BT 300 Service Manual V2 0 ss e For a special emphasis on agreement terms are defined as listed below in operation manual Users should operate the eguipment according to all the Warning and Caution instructions e Manufacturer or Sales agency takes no responsibility for any kind of damage or breakdown that is caused by misuse and failure to maintain the eguipment A Warning indicates a potentially hazardous situation which if not avoided could result in death or serious injury A Caution indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury A Note indicates a particular point of information something on which to focus your attention General Precaution on Environment H Do not keep or operate the equipment under the environment listed below BT 300 Service Manual V2 0 Avoid placing in an area exposed to moisture Do not touch the equipment with wet hand Avoid placing in an area where there is a high variation of temperature Operating temperature ranges f
14. nnector is used only to download the CPU program J Central Monitor Interface Connector RS 232C P1 D SUB 9P 2 Receiving signal for central monitor 3 TX O Transmitting signal for central monitor 5 GND Ground K Key Board Connector 21 BT 300 Service Manual V2 0 HEADER 20X2 NA Description FHR1 green rhythm LED signal FHRI red rhythm LED signal FHR2 green rhythm LED signal FHR2 red rhythm LED signal Record D or zoom S LED signal Alarm D or record S LED signal Information LED signal AlarmLEDsignal 1 Volume 1 step display signal Volume 2 step display signal SEG V3 0 Volume3stepdisplay signal SEG V4 O Volume 4 step display signal Name 0 io O io LO io io LO io io EN io io ISEGv5o O Volume 5 step display signal io Kon P I EE O O io LED HIG LED H2G LED H2R LED REC ZOOM LED ALM REC LED INFO SEG VI SEG V2 SEG V6 O Volume 6 step display signal SEG V7 O Volume 7 step display signal DOP1 volume up D or alarm S key 17 VOL DN1 VOL UP DOP1 volume down D or volume up S key DOP2 volume key o DOP2 volume down D or volume down S key Record D or zoom S key UC reference Alarm D 5 key 7 segment 0 enable signal
15. operation e Not hear the Doppler sound 1 Check sound signal in Main Board gt DOPI S signal U6C 8pin 2 Check volume operation gt U5 3 Refer to sound operation 3 2 3 UC operation Not display the UC value 1 Check UC signal in Main Board gt U7C 8pin 2 Refer to display operation 3 2 4 Sound operation e Not hear the Alarm Information sound 1 Check the PWM gt U43 36pin 2 Check the Audio Amp gt U8 3 2 5 Key operation e Not operate the key 1 Check Main Board Key Board cable gt re connection J13 2 Check the key input signal in Main Board gt U21 input 3 2 6 Display operation 32 BT 300 Service Manual V2 0 e Not operate the display 1 Check Main Board Key Board cable gt re connection J13 2 Check the display output signal in Main Board gt U11 U13 U15 U19 output 3 2 7 Print operation Not operate print 1 Checkthe cable Main Board Print Engine gt re connection J9 J12 J14 J17 2 Check the TPH control signal in Main Board gt U43 5pin 22pin 24pin U27 14pin 15pin 3 Check the motor control signal in Main Board gt U27 19in 18pin 17pin 16pin 3 2 8 RS 232C operation Not operate serial communication 1 Check the serial in out signal in Main Board gt 026 Section 4 Maintenance and Cleaning 4 1Maintenance and Cleaning You can keep BT 300 clean in many different ways Use the following recommendations to avoid the damage or stain of the machine If you use t
16. ot use the equipment in the vicinity of flammable anesthetics and solvents The equipment conforms to Class according to IEC EN 60601 1 Safety of Electric Medical Equipment This equipment conforms to Level B according to IEC EN 60601 1 2 Electromagnetic Compatibility Requirements Accessory equipment connected to the analog and digital interfaces must be certified according to the respective IEC standards e g IEC 950 for data processing equipment and IEC 601 1 for medical equipment Furthermore all configurations shall comply with the system standard EN 60601 1 1 1993 If in doubt consult the technical service department or your local representative Section 1 General Information 1 1 Product Overview BT 300 is the fetal monitor that measures the fetal heart rate FHR which may be evaluated to predict fetal status and uterine contraction BT 300 irradiates ultrasound wave to the abdomen of a pregnant woman and detects the Doppler frequency signal reflected from the heart of the fetus BT 300 analyzes this signal and displays the heart rate by LED Also BT 300 provides the sound from the BT 300 Service Manual V2 0 heart of fetus BT 300 measures the uterine contraction of a pregnant woman by pressure sensors and displays the numerical values And BT 300 prints the heart rate of the fetus and the values of uterine contraction 1 2 Product Features e BT 300 records the heart rate of the fetus the uterine contr
17. ption 36 BT 300 Service Manual V2 0 Service Telephone and Fax Numbers Telephone 82 2 862 0642 0643 Fax 82 2 862 0644 BISTOS Co Ltd 201 2F 239 15 Gasan Dong Geumcheon Gu Seoul Korea Model Name BT 300 www bistos co kr bistos bistos co kr EC Representative Econet Medical Gmbh High t Park Mainstr 6c 6d D 45768 Marl Germany Telephone 49 2365 92 437 0 Fax 49 2365 92 437 55 Vbistos Bistos Co Ltd 37
18. rom 10 Cto 40 C Operating humidity ranges from 30 to 85 Avoid placing in an area where there is an excessive humidity rise or ventilation problem Avoid placing in an area where chemicals are stored or where there is in danger of gas leakage Do not disjoint or dis assemble the equipment BISTOS Co Ltd takes no responsibility of it Avoid exposure to direct sunlight Avoid in the vicinity of Electric heater Avoid placing in an area where there is an excessive shock or vibration Avoid dust and especially metal material into the equipment Power off when the equipment is not fully installed Otherwise the equipment could General Precaution on Electric Safety Check the items listed below before operating the equipment Besure that power supply line is appropriate to use Power Adaptor Input 100 250V AC Power Adaptor Output 16V 2 8A sure that the entire connection cable of the system is properly BT 300 Service Manual V2 0 and firmly fixed The equipment should not be placed in the vicinity of electric generator X ray broadcasting apparatus to eliminate the electric noise during operation Otherwise it may cause incorrect result Self power line is important for BT 300 To use the same power source with other electric instruments may cause incorrect result BT 300 is classified as listed below This equipment conforms to Class Type BF Do n
19. s the alarm function to be disabled and go back to the normal monitoring mode 30 BT 300 Service Manual V2 0 5 When the auto printing period is expired it rings once right after stop recording Printer door open Close the door Paper empty Insert the paper 3 Printer door open 6 Paper Close the door 6 Insert the empty paper Dop1 probe open under Dop2 probe open under Table 4 1 Errors and Trouble shooting e Alarm Occasion and Status Checking Up When the measured FHR is beyond the alarm setting range for more than 20 seconds during monitoring it rings every 3 second until the FHR is within the alarm setting range at least once or pressing the ALM alarm pushbutton causes the alarm function to be disabled on purpose 3 2Troubleshooting on the Other Situation 3 2 1 Power operation Not operate the power 31 BT 300 Service Manual V2 0 _ 1 Check AC input gt supply 110 220 V 2 Check 16V Power Adaptor output gt replace Power Adaptor 3 Check DC power in Main Board gt 16V IVP16 L2 point 24V PVP24 U29 D10 point 5V DVP5 U35 4pin 3 3V DVP3 3 U31 2pin 1 8V DVP2 8 U36 2pin 12V AVP12 U9 3pin 5V AVP5 U10 Ipin 3 2 2 Doppler operation Not display the HR value 1 Check HR signal in Main Board gt DOPI HR signal U4C 8pin 2 Refer to display
20. und Signal WO Transmitting and receiving ultrasound signal 8 DOP ID identity signal B UC Probe Connector SIGNAL N AMB0509 6P 1 NC CE AS an 2 GND Ground 3 AVP12 O 12Vpowr 5 Signal UC out signal 6 NE 8 UCID Identity signal C Mark Jack Connection 18 BT 300 Service Manual V2 0 D Doppler 2 control signal only BT 300 dual D0P2_P Volo VOLD AVP5 0 1 2 SIGNAL 3 4 13 M1 q anan J4 15 ANAL SIG TRANSDUCERNZ Description Transmitting and receiving ultrasound signal Digital pulse for transmitting Volume control signal 0 Volume control signal 1 Volume control signal 2 180 control signal for demodulation 0 control signal for demodulation E Speaker Connector 19 BT 300 Service Manual V2 0 F Input Power Connector J15 IVP 16 KTJ 020 04 5267 2 1 IVP 16V input power IVP16 16V input power through power switch G CPU Reset Connector J10 VPP 1 2 224 RESET PIC DIL RST 1 VPP Power for program writing to CPU RESET O CPU reset signal EE 3 NC 4 RESET O CPU reset signal H Dual Single Recognized Connector 20 BT 300 Service Manual V2 0 DVPS JAB ira SIGNAL 1 5 DUALISINGLE DVP5 O 5Vpower SIGNAL Recognized signal This co
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