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Piston PDD-401, Operation Manual

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Piston PDD-401 Operation Manual Download Page 21

 

20 - Audiometer

 

Descending algorithm 

Yes

Select frequency

Signal is heard?

No

Signal is heard?

Yes

Does the nuber of equivalent

hearing levels reach the

desired quantity?

Finished

The hearing level is defined

Does the number of trials

reach the desired quantity?

No

Invalid

There are not enough equivalent

hearing levels!

Yes

No

No

Yes

Sound pressure increased by 10dB

Sound pressure decreased by 5dB

Record previous sound pressure

Set starting sound pressure

 

Summary of Contents for PDD-401

Page 1: ...Operation Manual for Audiometer PDD 401 PISTON Ltd 1121 Budapest Pihenő út 1 C pavilon v 3 080 0197 ...

Page 2: ...IOMETER 17 SELECTION OF MEASURING METHOD 17 Measuring mode 17 Signal type 18 ASCENDING ALGORITHM 19 DESCENDING ALGORITHM 20 CONFIGURATION OF AUTOMATIC SEQUENCE 21 First ear to be examined 21 Type of iteration 22 Test frequencies 22 Number of trials 22 Criteria of acceptance 22 Allowed tolerance 23 Error messages 23 Set default values 23 MANUAL MODE 23 ASCENDING ALGORITHM 24 DESCENDING ALGORITHM 25...

Page 3: ...HENSIVE TABLE 31 POSSIBLE PROBLEMS AND SOLUTIONS 33 AUDIOMETER 33 MISCELLANEOUS 34 TECHNICAL SPECIFICATIONS 37 GUARANTEE 37 LIMITED LIABILITY 37 SAFETY PRECAUTIONS 37 ENVIRONMENTAL CONDITIONS 38 ELECTRICAL SAFETY 38 ELECTRICAL DATA 39 MECHANICAL DATA 39 GENERAL VALUES 39 GUARANTEED VALUES 39 ACCESSORIES 40 ...

Page 4: ...are installation see Users Manual of Database Start panel see Users Manual of Database Location of database see Users Manual of Database Physicians data see Users Manual of Database Configuration of the Device see 13 page Creation and selection of database see Users Manual of Database Data of Institution see Users Manual of Database ...

Page 5: ... Database Enter to the Database see Users Manual of Database Yes No Run the program Open Database see Users Manual of Database Signal selection see 17 pagel Measurement see 22 24 page Algorithm selection see 16 page Comment see 25 page Print results see 27 page Save results see 25 page Close patients window Exit Program Finished Yes No ...

Page 6: ...Icon descriptions 5 Icon descriptions Audiometer Print Exit Microphone Manual mode Ascending algorithm Descending algorithm Automatic sequence Continuous sound Single Pulse sound ...

Page 7: ... Saving the examination Comment Sending data to an Excel workbook View current and previous comments Step back in print preview Step forward in print preview Full page view in print preview Two page view in print preview Exit from print preview ...

Page 8: ...Icon descriptions 7 Screen ...

Page 9: ...Screen 8 Icon descriptions ...

Page 10: ...has an integrated database management system The PDD 401 makes easy to measure the hearing level It is well suited for screening and following up changes in hearing level Thanks to the IBM PC base it is easy to handle but at the same time offers a lot of features During measurement the hearing level is shown in real time Results can be printed out even in colours The PDD 401 screening audiometer p...

Page 11: ...10 Introduction ...

Page 12: ...declares full responsibility for safety The installation should be done in a way that the patient was at least 1 5m distance from all the devices which are in direct electronic contact with the PC In case of faulty equipment design modification or any other reason the devices in the system computer monitor printer may only be exchanged if the new device s has the same safety class as the original ...

Page 13: ...ect the headphone set to the audiometer Minimum PC configuration The following minimum configuration is required to run the program Intel or AMD processor 1 GHz 256 MB RAM Colour monitor with 800x600 resolution and 256 colour and VGA video card 30 MB free space on the hard disk drive Windows compatible printer Mouse One free USB port Windowx XP Professional or Home operational system ...

Page 14: ...from the system CD Programs 32 bit Configuring the audiometer In case of a Database version select from the Database menu the Settings sub menu and the Audiometer configuration item In the case of Module version select from Audiometer menu the Settings sub menu and Audiometer configuration item The following will appear on the screen Select the Communication port from the rolling down list USB por...

Page 15: ...ill appear on the screen We are not responsible for any incorrect measurements if the correct values based on the calibration report have not been entered here Prior to enter the calibration values selects the type of SPL standard The following options are provided IEC 645 1 For Europe and USA SABS 0154 For South Africa To return to the original factory settings push the Default settings button En...

Page 16: ...ion values into to the table of Audiometer calibration Push the OK button to validate changes or the Cancel button to abandon changes If any change occurred to the values the following message appears Do you want to save modifications If everything is correct press the OK button Pressing the Cancel button exits without saving the changes ...

Page 17: ...16 Installation and configuration ...

Page 18: ...ted from 10 dB to 110 dB Start the audiometer by pressing the audiometer button The following will appear on the screen Selection of measuring method Prior to measurement select the method Measurement mode Signal type Measuring mode The system provides the following modes Manual mode Ascending iteration Descending iteration Automatic sequence Manual mode User gives the sound pressure and frequency...

Page 19: ...tes that the sound is not heard yet Automatic sequence According to the pre set sequence both ears are tested fully automatically Signal type The system provides the following types of signal Continuos Impulse Interrupted Continuos The signal is generated continuously The continuos signal is available only in Manual mode Impulse The signal is generated for 1 2 second intervals The Impulse signal i...

Page 20: ...ired quntity Finished The hearing level is defined Does the number of trials reach the prescribed quanity No Invalid There are not enough equivalent hearing levels Yes Yes Igen No Sound pressure decreased by 20dB Sound pressure increased by 10dB Sound pressure increased by 5dB Sound pressure decreased by 10dB Record the sound level Signal is heard No Set starting sound pressure ...

Page 21: ...earing levels reach the desired quantity Finished The hearing level is defined Does the number of trials reach the desired quantity No Invalid There are not enough equivalent hearing levels Yes No No Yes Sound pressure increased by 10dB Sound pressure decreased by 5dB Record previous sound pressure Set starting sound pressure ...

Page 22: ...ic sequence item In the case of Modular version select from the Audiometer menu the Setup submenu and Configuration of automatic sequence item The following window appears The following parameters should be set for specifying the automatic sequence First ear to be examined Type of iteration Test frequencies Number of trials Criteria of acceptance Allowed tolerance First ear to be examined To selec...

Page 23: ...the Basic frequency is measured twice during the automatic sequence and called as the Control frequency Modifying the sequence of frequencies Click at frequency to be moved and push any of the positioning buttons The Basic frequency can t be moved or replaced The Basic frequency can be deleted in this case the next frequency becomes the Basic frequency Deleting a frequency Click at the frequency t...

Page 24: ...is repeated the following message appears Only the Basic frequency can be repeated If the Basic frequency not repeated the following message appears The Basic frequency should be repeated Set default values To return to the original factory settings push the Default values button To save modifications push the OK button or to abandon modifications push the Cancel button Manual mode To select the M...

Page 25: ...ey increases frequency END Generates signal in pulse mode SPACE Equivalent to the patients feedback switch ESC Interrupts the test Ascending algorithm To select the Ascending algorithm click at the icon Select the ear and set the sound pressure and frequency The hearing level is determined automatically The process can be aborted at any moment by clicking at the icon The audiometer can be controll...

Page 26: ...well with the following keys Keys used during preparation of test Cursor key increases sound pressure Cursor key decreases sound pressure DEL Selects the Right ear PAGE DOWN Selects the Left ear Keys used during test SPACE Equivalent to the patients feedback switch ESC Interrupts the test Automatic sequence To select the Automatic sequence click at the icon Select the starting sound pressure and c...

Page 27: ...her during the repeated test reason should be revealed Possible reasons The headset is shifted from the ideal position The patient does not understand the procedure Possible error messages There are several reasons for an invalid measurement The number of equivalent hearing levels is lower than requested The hearing level at the Control frequency is lower than at the Basic frequency and minus the ...

Page 28: ... to an Excel workbook It is possible to send the measurement results to an Excel worksheet by pressing the button This will display the following on the screen This function is only available if Excel is running and a worksheet is open The column and row identifiers have to be entered R and C according to the current version of the Excel Enter the number of the first cell to export the data A name...

Page 29: ...Exporting data to an Excel workbook 28 Audiometer ...

Page 30: ...select Print preview item from the Audiometer menu Report print To start printing press the print button The following window will appear on the screen Report contents The header always appears in the report and contains the following Name of the physician performing the measurement Name and address of the institution Print data and time Patient s name identification date of birth and antropometri...

Page 31: ...version of the program Prints the patient comment It is possible to include only part of the comment in the diagnosis The following steps describe how to accomplish this Select measurement to be printed Open the comment window see the Comment chapter Enter the comment Select block of the comment You would like to see in the diagnosis see the Comment chapter Press print button Place a checkmark in ...

Page 32: ...ith electronic devices During cleaning and disinfecting follow the regulations of the manufacturer Disinfecting comprehensive table In the table below we comprehend which parts of the audiometer should be cleaned and disinfected and some sample materials are given for use Of course always follow the regulations of the cleaning and disinfecting materials Name Material Cleaning and disifecting mater...

Page 33: ...Disinfecting comprehensive table 32 Maintenance ...

Page 34: ...gher than at the Basic frequency plus the allowed tolerance Probably the patient does not understand the procedure or the headset shifted out of original position in this case it is advisable to repeat the whole test The sound pressure cannot be decreased anymore When the sound pressure is as low as 10dB and the patient still hears the signal Probably the patient pushes the feedback switch randoml...

Page 35: ...d from the database The program requires 256 or more colours The program cannot be fully enjoyed in 16 colours Change Windows to a higher colour level Frame error experienced by the serial port It is possible that incorrect baud rate has been set Contact the device distributor Invalid or unsupported serial device identification Contact the device distributor Unsupported serial device baud rate Inc...

Page 36: ...d try again If the program still does not work decrease the receiver buffer size in the Ini file Contact the device distributor LOGO file not found The Logo bmp file is missing Miscellaneous In a case of malfunction switch of the audiometer and if there is no risk of electric hazard after a little while turn it on again ...

Page 37: ...Miscellaneous 36 Possible problems and solutions ...

Page 38: ...sibility even to the slightest extent in the case of individual unforeseeable direct or indirect losses for cancellation of profit for interruption of activity for losing information for any financial losses which may be derived from the usage or not usage of the device Safety precautions Please take into consideration the following precautions to avoid damages The mains voltage should be equivale...

Page 39: ...n or cracked pillows Environmental conditions The device complies with the EN 60601 1 1997 standard Transport conditions Ambient temperature 30 C 60 C Relative humidity 10 100 Ambient pressure 500 1060 mbar Storage conditions Ambient temperature 0 C 50 C Relative humidity 10 85 Ambient pressure 500 1060 mbar Service conditions Ambient temperature 10 C 35 C Relative humidity 30 75 Ambient pressure ...

Page 40: ...their Users manual Audiometer PDD 401 Current consumption from the USB port max 190 mA Mechanical data Audiometer interface unit PDD 401 Width 82 mm Depth 150 mm Height 45 mm Weight 960 g General values Earphones TDH 39 Attenuation of headset 40 dB Expected lifetime 5 év Step of sound pressure 5 dB Frequencies 125Hz 250Hz 500Hz 750Hz 1kHz 1 5kHz 2kHz 3kHz 4kHz 6kHz 8kHz Volume range 10dB HL 110dB ...

Page 41: ...ccessories included Name Type Quantity Audiometer interface PDD 401 1 unit System software 1 set Headset HE 2000 1 set Feedback switch HE 3000 1 set Serial cable 1 5 m 9 pole extension 1 piece Users manual Audiometer Database 1 volume 1 volume ...

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