Ottometrics A450 User Manual

Otometrics Madsen A450

User Guide

Doc. No.7-50-1830-EN/02

Part No.7-50-18300-EN

Copyrightnotice

The manufacturer authorizes GN Otometrics A/S to publish manuals approved and released by the manufacturer.

© 2017,2017GNOtometricsA/S.All rights reserved. ® Otometrics, the OtometricsIcon, AURICAL, MADSEN, ICSand HORTMANN
are registered trademarks of GNOtometricsA/S in the U.S.A.and/or other countries.

Version release date

2017-03-20 (153952)

Technical support

Please contact your supplier.

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Table of Contents

1 Device description

5

2 Intended use

5

3 Unpacking

6

4 Installation

6

5 Connecting accessories to Otometrics Madsen A450

7

6 Powering the device

8

7 Connecting Otometrics Madsen A450 to OTOsuite

9

8 Control panels and On-screen controls

10

9 Toolbar icons in the Audiometry Module

15

10 PC keyboard controls

16

11 Proper transducer placement

16

12 Performing tone audiometry

17

13 Performing speech audiometry

19

14 Service, cleaning and calibration

21

15 Other references

22

16 Technical specifications

22

17 Definition of symbols

34

18 Warning notes

34

19 Manufacturer

37

3

User Guide

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1 Device description

Otometrics Madsen A450

Otometrics Madsen A450 is a PC-controlled audiometer for testing a per­son's hearing.The audiometer is operated from the OTOsuite Audiometry
Module PC software.

• With Otometrics Madsen A450 you can perform all standard audi­ometric tests, tone and speech audiometry and special tests. Technical
Specifications,

2 Intended use

Otometrics Madsen A450 with the Audiometry module

Users: audiologists, ENTs, hearing instrument dispensers and other health care professionals in testing the hearing of their
patients.

Use: diagnostic and clinical audiometric testing.

2.1 Typographical conventions

The use of Warning, Caution and Note

To draw your attention to information regarding safe and appropriate use of the device or software, the manual uses pre­cautionary statements as follows:

Warning• Indicates that there is a risk of death or serious injury to the user or patient.

Caution• Indicates that there is a risk of injury to the user or patient or risk of damage to data or the device.

Note• Indicates that you should take special notice.

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1 Device description

3 Unpacking

1. Unpack the device carefully.
When you unpack the device and accessories, it is a good idea to keep the packing material in which they were
delivered. If you need to send the device in for service, the original packing material will protect against damage dur­ing transport, etc.

2. Visually inspect the equipment for possible damage.
If damage has occurred, do not put the device into operation. Contact your local distributor for assistance.

3. Check with the packing list to make sure that you have received all necessary parts and accessories. If your package is
incomplete, contact your local distributor.

4. Check the Test Report (Calibration Certificate), make sure that the transducers (headphones and bone oscillator) are
the correct ones, and that they comply with the ordered calibration standards.

4 Installation

Install OTOsuite on the PC before you connect to Otometrics Madsen A450 from the PC.

For instructions on installing OTOsuite, see the OTOsuiteInstallation Manual, which you can find on the OTOsuite install­ation medium (disk or memory stick).

Otometrics Madsen A450 is fully assembled on delivery, and you simply have to connect cables.

Caution• To connect Otometrics Madsen A450 to the PC, use the supplied USB cable. The cable length

must not exceed 3 m (approx. 10 feet).

Desktop or wall-mount installation

You can place Otometrics Madsen A450 on the desktop or mount it on the wall.

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3 Unpacking

Wall-mount installation

It is recommended that you connect the external power sup­ply and the accessories before you mount Otometrics Madsen
A450 on the wall.

1. Select two suitably sized screws that will pass through the
wall-mount holes on the back of the device:

Max. screw diameter 4.3 mm (0.15 in).
Max. screw head diameter: 9 mm (0.35 in).

2. The distance between the two wall-mount holes on the
back of the device is 24 cm (9.4 inches), measured from
the center of each hole.

3. Mark up the two holes on the wall and make sure that the
device will be placed horizontally.

4. Fix the two screws in the wall.

5. Hang Otometrics Madsen A450 on the screws.

Otometrics Madsen A450 cabling

A. External power supply cable
B. USB cable between Otometrics Madsen A450 and the

PC

5 Connecting accessories to Otometrics Madsen A450

The installation must be carried out in accordance with IEC 60601-1-1 plus addendum in the form of Part 1:
General provisions -1 and UL 60601-1, CAN/CSA-C22.2 NO 601.1-90. The supplementary provisions on the reli­ability of electro-medical systems.

It is a general rule for all electrical equipment used in the proximity of the client that:

• The connected equipment must comply with IEC 60601-1 and/or IEC 60601-1-1

except for the PC, and equipment connected to the line in and the line out sockets of Otometrics Madsen
A450.

See also General warning notes ► 35.

For a detailed description of the connection panel, see the Otometrics Madsen A450Reference Manual.

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5 Connecting accessories to Otometrics Madsen A450

Connection panel - Otometrics Madsen A450

1. Connect the plugs to the sockets in the connection panel.

A. PC/USB connection

B. External power supply

C. Sound field speakers (power output)

D. Insert earphones

E. Headphones - air conduction

F. Patient Responder

G. Bone oscillator

H. Speaker, Analog (line output)

I. Line-in

J. Operator monitor headset - headphones

K. Operator monitor headset - boom microphone

L. Counseling and Simulations headphones

M. Talk-back microphone

Note• Blue corresponds to Left and red corresponds to Right.

Warning• Use only the power supply provided by Otometrics.

Caution• When you connect other electrical equipment to Otometrics Madsen A450, remember that equipment that

does not comply with the same safety standards as Otometrics Madsen A450 can lead to a general reduction in the
system's safety level.

Connecting an external speaker

External speakers can be connected to Otometrics Madsen A450 via powered output terminals or line-out terminals. In
both cases you should contact your service department for installation and calibration. See also Calibration ► 21.

6 Powering the device

Otometrics Madsen A450 is powered through an external power supply connected directly to the mains outlet.

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6 Powering the device

Warning• Otometrics Madsen A450 is not provided with a mains switch.

To connect Otometrics Madsen A450 to the mains supply, plug the mains plug into the wall mains outlet.
To disconnect Otometrics Madsen A450 from the mains supply, pull the mains plug out of the wall mains outlet. Do
not position the unit so that it is difficult to pull the mains plug out of the wall mains.

1. Plug the external power supply into the Power socket in the con­nection panel.

2. Plug the mains plug of the external power supply into an AC mains
outlet with a three-wire protective ground.

Switching on Otometrics Madsen A450

Use only the power supply specified in Technical Spe­cifications in the Otometrics Madsen A450Reference
Manual.

1. Connect the mains plug of the external power sup­ply directly to an AC mains outlet with a three­wire protective ground.

2. Switch on the mains supply.

3. The On/Off indicator on Otometrics Madsen A450
lights green.

Switching off Otometrics Madsen A450

1. To completely switch off Otometrics Madsen A450, disconnect the power supply from the mains outlet.

7 Connecting Otometrics Madsen A450 to OTOsuite

To connect Otometrics Madsen A450 to the PC, you must install OTOsuite on the PC.

For instructions on installing OTOsuite, see the OTOsuiteInstallation Manual, which you can find on the OTOsuite install­ation medium (disk or memory stick).

Caution• Use only the USB cable supplied with Otometrics Madsen A450.

1. Switch on the device.

1. Launch OTOsuite.

2. Connect the USB cable from the USB socket on the back of the device to a USB socket on the PC. The
OTOsuite software automatically detects the device.

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7 Connecting Otometrics Madsen A450 to OTOsuite

8 Control panels and On-screen controls

Control panels

Tone testing Speech testing

In the control panel you can quickly select test ear, trans­ducer, masking, and test type.

Click on the buttons to toggle the selection or right-click on a
button to select a combination of functions.

Your selections are shown in the Stimulus bar and as symbols
in the audiogram.

You can control the monitor level, activate the Talk Forward
dialog, and use the Test Selector to quick select the relevant
user test.

• Right-click on the buttons in the control panel to view
the right-click menu. Click to enable or disable selections
of your choice.

• Right-click on the blue masking link area in the control
panel to view the Masking Options right-click menu.
Click to enable or disable selections of your choice.

Tone testing

Test ear selection

• Right

• Both

• Left

Transducer selection

• Air conduction Phones (standard headphones), optional

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8 Control panels and On-screen controls

Transducer selection

• Air conduction Insert (earphones), optional

• Bone conduction Bone (oscillator)

• SF Unaided (Sound Field speaker, unaided), optional

• SF Aided 1 and SF Aided 2 (Sound field speaker - Aided 1 and 2), optional

Stimulus type selection

• Tone

• Warble

• FRESH noise

• Pulsed

Test type selection

• AUD (audiogram threshold curve)

• SRT (Speech Recognition Threshold)

• WRS (Word Recognition Score)

• MCL (Most Comfortable Loudness level)

• UCL (Uncomfortable Loudness level)

Speech testing

Test ear selection

• Right

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8 Control panels and On-screen controls

Test ear selection

• Both

• Left

Transducer selection

• Air conduction Phones (standard headphones), optional

• Air conduction Insert (earphones), optional

• Bone conduction Bone (oscillator)

• SF Unaided (Sound Field speaker, unaided), optional

• SF Aided 1 and SF Aided 2 (Sound field speaker - Aided 1 and 2), optional

Stimulus type selection

• Microphone for presenting live speech stimulus

• Recorded stimulus

Talk Forward

Click to open the Talk Forward dialog. See the Otometrics Madsen A450Reference Manual.
Enables communicating with the patient in the sound booth. This will display the Talk Forward dialog
box, where you can control the talk forward microphone sensitivity and the output level (in dB HL) to
the patient.

Monitor and Level

Click to open the Monitor and Level dialog. See the Otometrics Madsen A450Reference Manual.

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8 Control panels and On-screen controls