Siemens SD 270 Bedienungsanleitung

Operating Manual

(Applies from Serial Number 8200 onwards)

SD 270 Diagnostic Audiometer

Overview of SD 270 Audiometer Controls

Contents

Overview of SD 270 Audiometer Controls 2

Contents 3

1 Introduction 6

- 1.1 Intended applications 6

- 1.2 Unpacking 6

- 1.3 Standard contents 6

- 1.4 Optional accessories 7

- 1.5 Frequently used functions 7

- 1.6 Known contradictions 7

2 Important Safety Instructions 8

- 2.1 Precautions 8

- 2.2 Electromagnetic compatibility (EMC) considerations 9

- 2.3 Mains supply operation 10

- 2.4 Audiometer connections 11

- 2.5 Data transfer to a printer 12

- 2.6 Data transfer to a computer 13

- 2.7 Line in/out connection (audio) 13

3 Using the Audiometer 14

- 3.1 Ambient conditions 14

- 3.2 Switching the audiometer on and off 14

- 3.3 Operating language 14

- 3.4 Testing the patient response switch 15

- 3.5 Audiometer display 15

- 3.6 Audiometer controls 15

- 3.7 Threshold Retention Function 30

- 3.8 Uncomfortable loudness levels 31

- 3.9 Saving audiograms in internal memory 31

- 3.10 Loading audiograms from internal memory 32

- 3.11 Printing audiograms 32

- 3.12 Data transfer to a NOAH database 33

4 Sequence of Operation and Suggested Test Procedure 34

- 4.1 Pre-test 34

- 4.2 Test 34

- 4.3 Post-test 35

5 Specification 36

- 5.1 Output data 36

- 5.2 Maximum hearing levels provided at each frequency 37

- 5.3 Physical Data 37

- 5.4 Equipment classification 38

6 Symbols 39

7 Technical Information 40

8 Routine Maintenance 43

- 8.1 Audiometer maintenance 43

- 8.2 Transducer maintenance 43

- 8.3 Mains adapter maintenance 45

- 8.4 Perform listening check 45

9 Instrument Storage and Transportation 46

10 Calibration & Return of the Instrument 47

11 Guarantee 48

12 Ordering Consumables & Accessories 49

Appendix 1 ‒ Speech Audiometry 50

- Headphone and Free Field Testing 50

- Operator Monitoring 50

- Test Modes in Speech Audiometry 51

- Display Counter 51

- 1. Live Voice Speech Audiometry to Headphones 52

- 2. Live Voice Speech Audiometry with Contralateral Masking 53

- 3. Recorded Speech Audiometry to Headphones 54

- 4. Recorded Speech Audiometry to Headphones with

Contralateral Masking 55

- 5. Free Field Live Voice Speech Audiometry 56

- 6. Free Field Recorded Speech Audiometry 57

- 7. Free Field Recorded Speech Audiometry with Competing

Noise (Audiometer-Generated) 58

- 8. Free Field Recorded Speech Audiometry with Competing

Noise (Recorded) 59

Appendix 2 ‒ Free Field Calibration Procedure 60

- 1. Assurance Of Calibration 60

- 2. External Amplifier and Loudspeaker 60

- 3. Calibration Overview 60

- 4. Free-field Speech Calibration 61

- 5. Free-field Warble Tones Calibration 64

- 6. Free-field Live Speech Calibration 67

Appendix 3 ‒ EMC Guidance & Manufacturer’s Declaration 68

Appendix 4 ‒ Use with Non-medical Electrical Equipment 74

Appendix 5 ‒ Technical Support Contacts 81

Disposal information 83

1 Introduction

Thank you for purchasing a Siemens audiometer. The Siemens

SD 270 is a diagnostic audiometer that will give many years of

reliable service if treated with care.

1.1 Intended applications

The Siemens SD 270 diagnostic audiometer is designed for use by

audiologists, general practitioners, hearing aid dispensers and child

health professionals. Capable of undertaking both air and bone

conduction tests with or without masking, the audiometer also has

many additional features such as the facility to support speech au-

diometry from live or recorded sources, the option to select

free-field equivalent output from the headphones in speech mode

and a range of clinical audiometry tests.

1.2 Unpacking

Open the shipping carton and carefully remove all the equipment.

Check against the delivery note that all the accessories ordered

have been included with your audiometer. If anything is missing,

please contact your local Service department – see Appendix 5.

If you have purchased from a distributor you should contact them

directly.

Please retain the shipping carton and packing materials as the

audiometer will need calibrating on an annual basis and should

be returned for service in its original shipping carton.

1.3 Standard contents

Siemens SD 270 Audiometer Audiometric headset

Bone conductor headset Patient response switch

Mains adaptor, see 2.3 Audiogram cards

Operating manual Calibration certificate

Carrying case

1.4 Optional accessories

Masking earpiece Microphone and monitor headset

Printer Additional audiogram cards

Printer cable Insert earphones

Data cable for NOAH Link driver disk for NOAH

1.5 Frequently used functions

How to switch on/off or set the language or control the level?

Please refer to section 3 of this instruction.

1.6 Known contradictions

There are no contradictions known for the use and application of

the SD 270 Audiometer.

2 Important Safety Instructions

Safety Note!

Any modification of the device itself or its accessories is not

allowed and may lead to inaccepteable risk of harm or inju-

ries.

Safety Note!

The SD 270 diagnostic audiometer must be used only by

practitioners qualified to perform audiometric tests. It is

intended for use as a screening and diagnostic tool.

2.1 Precautions

READ THIS OPERATING MANUAL BEFORE ATTEMPTING TO USE

THE INSTRUMENT.

To comply with the standards IEC 60601-1 for safety and

IEC 60601-1-2 for EMC the audiometer is designed to be used

only with the medically-approved mains adapter supplied, which

is specified as part of the equipment. Do not use any other type

of mains adapter with this instrument. Refer to Section 12 for

the stock number of the adapter.

The audiometer is for indoor use only and should be used only as

described in this manual.

The transducers supplied with the audiometer are specifically

calibrated with it; if these transducers are changed calibration

will be required.

Do not immerse the unit in any fluids. See Section 8 for the proper

cleaning procedure for the instrument and its accessories and the

function of single-use parts.

Do not use the instrument in an oxygen-rich environment or in the

presence of a flammable anaesthetic mixture or other flammable

agents.

Do not drop or otherwise impact this instrument. If the instrument

is dropped or damaged, return it to the manufacturer for repair

and/or calibration. Do not use the instrument if any damage is

suspected.

The instrument must be stored and used within the specified

temperature, pressure and humidity ranges (see Sections 7 and 9).

Do not attempt to open or service the instrument. Return the

instrument to the manufacturer or distributor for all repair and

servicing requirements. Opening the instrument will void the

warranty.

2.2 Electromagnetic compatibility (EMC) considerations

Medical electrical equipment needs special precautions regarding

EMC and needs to be installed and put into service according to

the EMC information provided in Appendix 3. This provides

guidance on the electromagnetic environment in which to

operate the instrument.

Portable and mobile radio-frequency (RF) communications

equipment can affect medical electrical equipment. The

instrument should not be used adjacent to or stacked with

other equipment; if this is unavoidable the instrument should

be observed to verify normal operation.

2.3 Mains supply operation

The audiometer is designed for continuous operation and is

as part of the equipment. If a replacement is required, please

contact your local Service department (see Annexx 5).

All other connections must be made before connecting the output

lead from the adapter into the POWER input socket on the back of

the audiometer. Switch on the mains supply - the indicator on the

adapter and the POWER indicator on the audiometer will both

illuminate green, showing that the instrument is ready for use.

The output from mains adapter is fitted with electronic circuit

protection. In case of overload the adapter will shut down and the

indicator will be extinguished. When the fault is cleared the adapter

will operate as normal.

The input is to the mains adapter is protected with a non-replacea-

ble fuse. If this fails the adapter will not operate.

The mains adapter is the mains disconnect device and therefore

the audiometer should be positioned such that easy access to the

mains adapter is possible.

Safety Note!

DO NOT USE ANY OTHER MAINS ADAPTER WITH THIS IN-

STRUMENT.

To comply with the standards IEC 60601-1 for safety and

IEC 60601-1-2 for EMC the audiometer is designed to be used

only with the medical approved mains adapter supplied with

the product. If a replacement is required, please contact your

local Service department (see Annexx 5).

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