MADSEN Micromate 304 User Manual Sept 2011

Contents Portable Screening Audiometer User Manual 1

Introduction... 5

2

Test conditions... 7 2.1 Training... 7

3

Standards... 9

4

Safety... 11 4.1 Warnings... 11

5

Service and repair... 13 5.1 Equipment failure... 13

6

Unpacking... 15

7

Storage and shipment... 17

8

Installation... 19

9

Care and maintenance... 21

10 Calibration... 23 11 Operation with batteries... 25 11.1 Battery type... 25 11.2 Battery life... 25 11.3 Battery low... 25 11.4 Rechargeable batteries... 26

12 Basic instructions... 27 13 Screening tests... 29 13.1 Patient instruction... 29 13.2 Operating instructions... 30 13.3 Technical specifications... 31

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Contents Portable Screening Audiometer • User Manual

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1

Introduction May we congratulate you on your choice of the MADSEN Micromate 304 portable screening audiometer. Intended Use

Micromate 304 is intended for screening and diagnostic use by audiologists and other health care professionals in testing the hearing of their patients.

Battery or AC Power Supply

This audiometer permits the performance of complete manual audiological screening tests - either battery-powered or with AC power supply as an option.

Auto Power-Off

Although alkaline batteries have a long life in the Micromate 304 (up to 300 hours!), the audiometer automatically switches itself off approximately 10 minutes after use to conserve power. Blinking LED's indicate when batteries are low.

Battery Low Indication

The operator of a Micromate 304 will appreciate the simplicity of operation and ergonomic design. The low profile cabinet, combined with the silent touch pushbutton controls produce fast and accurate results. The attenuator has a hearing level range of -10 to +90 dB in 5 dB steps, at 9 frequencies (250 to 8000 Hz). Tone presentation is indicated by a yellow LED and is controlled by an ambidextrous tone bar which enables onehanded operation by both leftand right-handed users. Frequency and hearing level are indicated by easily readable LED indicators on the front panel. Audiogram Form

If a record of thresholds is desired, an audiogram form may be attached to the front panel and the coordinate system of indicators used to mark the audiogram curve.

Optional Carrying Case

The Micromate 304 audiometer may be supplied with an optional custom-made carrying case for self-contained operation-all standard accessories including the ME70 Noise-Excluding Headset may be packed together with the audiometer and optional Mains Adaptor.

Typographical conventions

The use of Warning, Caution and Note

For safety reasons and appropriate use of Micromate 304, the manual contains Warnings, Cautions and Notes, which you should read carefully. The use of these headings is denoted as follows: Warning · A warning indicates that there is a risk of danger to persons and data.

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Introduction

Caution · Caution indicates that there is a risk of damage to data. Note · A note indicates that you should take special notice.

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Test conditions The ambient noise conditions for audiometric tests should be less than 40 to 50 dB SPL. The audiometric tests may normally be performed under quiet office conditions, but an audiometric booth is recommended under noisy conditions.

2.1

Training It is recommended that you read this Manual before you start operating Micromate 304 so that you become familiar with the device before testing on a patient.

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Test conditions Training

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Standards The Micromate 304 complies with the following standards for audiometers: EN 60645-1 EMC: EN 60601-1-2 ANSI S3.6

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The Micromate 304, type 1024, and this manual are CE-marked according to the Medical Devices Directive 93/42/EEC. The Micromate 304, type 1024 is marked with this symbol to indicate compliance with Type B requirements of EN 60601-1. The instrument is marked with this symbol to indicate that it is electronic equipment covered by the Directive 2002/96/EC on waste electrical and electronic equipment (WEEE).

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Safety This User Manual contains information and warnings which must be followed to ensure the safe performance of the Micromate 304. Local government rules and regulations, if applicable, should also be followed at all times.

4.1

Warnings Unwanted noise may occur if Micromate 304 is exposed to a strong radio field. Such noise may interfere with the process of recording correct measurements. Many types of electrical devices, e.g. mobile telephones, may generate radio fields. We recommend that the use of such devices in the vicinity of Micromate 304 is restricted as much as possible.

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Safety Warnings

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Service and repair Service and repair of electromedical equipment should only be carried out by the equipment manufacturer or by authorized representatives. The manufacturer reserves the right to disclaim all responsibility for the operating safety, reliability and performance of equipment serviced or repaired by other parties.

5.1

Equipment failure Warning · Do not use a defective instrument. If you believe the correct function or operation safety of Micromate 304 to be faulty in any way, disconnect Micromate 304 from the power supply, remove the batteries, and make sure that it cannot be used by others until it has been serviced. Warning · Under no circumstances disassemble Micromate 304. Contact your supplier.

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Service and repair Equipment failure

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Unpacking The Micromate 304 portable screening audiometer is shipped in one carton containing the instrument and all standard accessories. Upon receipt, refer to the enclosed Packing Specification and check that the carton is undamaged and when unpacked check that the audiometer and accessories are complete and intact.

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Unpacking Equipment failure

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Storage and shipment To protect the audiometer during storage or shipment you should always use the best packing available. If it is necessary to return the instrument to the MADSEN distributor or to the factory for repair, use the original shipping carton. Caution · Batteries should be removed prior to storage to prevent damage caused by battery leakage! Never put the audiometer in an enclosed container with the power on.

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Storage and shipment Equipment failure

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Installation Connections

Connect the headset and the patient signal to the respective connectors on the rear panel of the instrument (refer to Fig. 1). Power Supply (optional) 8-74-090 EU 8-74-09001 US

Fig. 1

Micromate 304 Rear Panel.

Note that the headphone jacks are color-coded: blue is for left, and red for right. The plugs on the rear panel for the headphones are clearly marked for Right and Left. Power Supply

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Remove both screws on the battery compartment cover located on the base of the instrument and insert 6 1.5 V Type C batteries ensuring that the poles are correctly installed (see Fig. 2) or connect the optional AC power adaptor (see Fig. 1)

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Fig. 2

Power On

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Micromate 304 Battery Compartment.

Switch the instrument on by pressing the black tone switch on the bottom left of the front panel of the instrument and note that the following indicators light up: 20 dB, 1000 Hz, and Left channel. No warm-up time is required.

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Care and maintenance Cleaning

The Micromate 304 requires no preventive maintenance. However, it is recommended that the following guidelines be observed. The instrument should be kept clean and as free of dust as possible: Remove dust using a soft brush and take special care to dislodge any accumulations of dirt on or around the pushbuttons on the front panel.

KEEP AWAY FROM LIQUIDS!

To clean the cabinet and the front panel, use a soft, slightly damp cloth with a small amount of mild detergent on it. Do not allow any moisture inside the instrument! Warning · Chemical cleaning agents containing ammonia or alcohol will damage the cabinet. DO NOT USE ABRASIVE CLEANERS! Do not expose the instrument to direct sunlight and keep it well ventilated at all times to prevent overheating. Caution · The earphones are in constant contact with your patients so care should be taken to ensure that they are kept clean. Just wipe them regularly with a moist cloth.

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Care and maintenance Equipment failure

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