MADSEN OTOflex 100 and OTOsuite Immittance Module Reference Manual Oct 2016

Table of Contents 1

Introduction 1.1 MADSEN OTOflex 100 1.2 The OTOsuite Immittance module 1.3 Intended use 1.4 About this manual 1.4.1 Safety 1.4.2 Installation 1.5 Typographical conventions 1.5.1 Navigating this manual

9 9 9 10 10 11 11 11 11

2

Unpacking and storing 2.1 Unpacking 2.2 Storing

12 12 12

3

Installing MADSEN OTOflex 100 3.1 Views of MADSEN OTOflex 100 3.1.1 Front view 3.1.2 Top view 3.1.3 Bottom view 3.1.4 Reverse side view 3.1.5 The charger 3.2 The probe 3.3 Assembly and installation 3.3.1 Location 3.3.2 Desktop installation 3.3.3 Wall mount installation 3.4 Powering 3.4.1 Powering MADSEN OTOflex 100 3.4.2 Powering the charger 3.4.3 Batteries 3.4.3.1 Inserting batteries 3.4.3.2 Battery type setting 3.4.3.3 First time charging 3.4.3.4 Charging status 3.4.3.5 Powering status 3.4.4 Switching MADSEN OTOflex 100 on and off

13 13 13 14 14 14 15 16 16 16 17 18 18 18 19 19 20 21 21 22 22 23

4

MADSEN OTOflex 100 main description 4.1 Switching MADSEN OTOflex 100 on and off 4.2 Language setting 4.3 Keypad main functions 4.4 The display - test mode 4.5 Controls and menu selections 4.5.1 The MADSEN OTOflex 100 Menu 4.5.2 Test Selector mode 4.5.3 The Text Editor 4.5.4 The Tympanometric Curve Selector 4.6 MADSEN OTOflex 100 Icons 4.6.1 Navigation and editing symbols 4.6.2 Powering 4.6.3 Communication

24 24 24 25 27 28 28 30 31 33 33 33 34 35

Otometrics - MADSEN OTOflex 100

3

4.6.4 Messages 4.6.5 Leakage

4

35 35

5

Navigating in the OTOsuite Immittance module 5.1 Menus and toolbar icons 5.2 The control panels 5.2.1 Sequence selection 5.2.2 Test control buttons 5.3 The Tympanometry screen 5.4 The Acoustic Reflex screens 5.4.1 The Reflex Screening screen 5.4.2 The Reflex Threshold screen 5.4.3 The Reflex Decay screen 5.5 The ETF-P screen 5.5.1 The post-analysis tool

36 36 37 38 38 39 40 40 41 42 43 43

6

Communication between OTOsuite and MADSEN OTOflex 100 6.1 Bluetooth 6.2 Connecting a test device 6.3 Deleting a test device 6.4 Test device information 6.5 Firmware upgrade - test devices

44 44 44 45 45 45

7

Preparing for testing 7.1 Preparing the test environment 7.2 Hygienic precautions 7.3 Preparing MADSEN OTOflex 100 7.3.1 Preparing the probe 7.3.2 Connecting probe and insert phone 7.3.3 Using the cap 7.3.3.1 Mounting the cap 7.3.3.2 Removing the cap 7.3.4 Daily probe check 7.3.5 Users 7.3.6 Selecting patient folder and test type in MADSEN OTOflex 100 7.3.7 Test flow setup 7.3.8 Selecting the test ear 7.4 Preparing the patient 7.4.1 Inspecting the patient’s ear 7.4.2 Fitting the eartip on the probe 7.4.3 Fitting the probe in the patient’s ear 7.4.4 Leakage and other probe problems 7.5 Preparing for the next patient 7.6 Ready to start testing

47 47 47 47 47 48 48 48 50 51 51 52 53 53 54 54 54 55 56 56 57

8

Testing with MADSEN OTOflex 100 8.1 Fast routine testing 8.2 General keypad functions for testing 8.3 Sequence testing 8.3.1 Selecting a test sequence 8.3.2 Running a test sequence from MADSEN OTOflex 100 8.4 Screening 8.4.1 Screening tympanometry

58 58 59 60 60 61 61 62

Otometrics - MADSEN OTOflex 100

9

8.4.2 Reflex screening 8.4.3 The reflex screening result 8.5 Tympanometry 8.5.1 Diagnostic tympanometry 8.5.2 The diagnostic tympanometry result 8.5.3 Changing view settings 8.5.4 Settings - diagnostic tympanometry 8.6 ETF-I (Eustachian Tube Function - Intact) 8.6.1 Settings - ETF-I 8.7 Acoustic reflex testing 8.8 Reflex Threshold testing 8.8.1 Softkeys and functions 8.8.2 Reflex Threshold - procedure 8.8.3 Viewing Reflex Threshold results 8.8.4 Settings - Reflex Threshold 8.9 Reflex Decay testing 8.9.1 Softkeys and functions 8.9.2 Reflex Decay - procedure 8.9.3 Viewing Reflex Decay results 8.9.4 Settings - Reflex Decay 8.10 ETF-P (Eustachian Tube Function - Perforated) 8.10.1 Softkeys and functions 8.10.2 ETF-P - procedure 8.10.3 Viewing ETF-P results

63 65 67 67 68 70 70 70 71 71 72 73 74 76 77 78 79 80 82 82 83 83 84 85

Managing Test Results in MADSEN OTOflex 100 9.1 When testing is done 9.2 Swap ear results 9.3 Deleting measurements 9.4 Deleting test results 9.5 Communicating and synchronizing with OTOsuite 9.5.1 Synchronizing data

86 86 86 86 86 87 87

10 Printing 10.1 Printing from MADSEN OTOflex 100

89 89

11 Testing with the OTOsuite Immittance module 11.1 Sequence testing 11.1.1 Selecting a test sequence 11.1.2 Running a test sequence 11.2 Screening 11.2.1 Screening tympanometry 11.2.2 Reflex screening 11.3 Tympanometry 11.3.1 Diagnostic tympanometry 11.3.2 Settings - diagnostic tympanometry 11.3.3 The diagnostic tympanometry result 11.4 ETF-I (Eustachian Tube Function - Intact) 11.4.1 Settings - ETF-I 11.5 Acoustic reflex testing 11.6 Reflex Threshold testing 11.6.1 Reflex Threshold - procedure 11.6.2 Viewing Reflex Threshold results

90 90 90 90 91 92 94 96 97 99 99 100 100 101 102 102 106

Otometrics - MADSEN OTOflex 100

5

6

11.6.3 Settings - Reflex Threshold 11.7 Reflex Decay testing 11.7.1 Reflex Decay - procedure 11.7.2 Viewing Reflex Decay results 11.7.3 Settings - Reflex Decay 11.8 ETF-P - procedure 11.8.1 The ETF-P post-analysis tool 11.9 Managing test results 11.9.1 Swapping ear results 11.9.2 Deleting data 11.10 Leakage and other probe problems 11.11 Testing the other ear 11.12 Saving measurements 11.12.1 Tests and subtests 11.12.2 Standards used in NOAH 11.13 Preparing for the next patient

107 108 109 111 111 112 113 114 114 114 114 115 115 116 116 116

12 Data management in MADSEN OTOflex 100 12.1 Data handling 12.1.1 Interruption of communication 12.1.2 Synchronization 12.2 Uploading test results to OTOsuite 12.3 Data clean-up

118 118 118 118 119 119

13 Test settings in MADSEN OTOflex 100 13.1 Test setups 13.1.1 Changing individual settings 13.1.2 Uploading test settings to the Immittance module 13.1.3 Creating a setup 13.1.4 Editing a test setup 13.1.5 Using a test setup 13.2 General actions 13.2.1 Test result management settings 13.2.2 Procedure options 13.2.3 Advanced 13.2.4 Device settings 13.3 Tympanometry setup 13.3.1 Screening tympanometry 13.3.2 ETF-I setup 13.4 Acoustic Reflex Screening setup 13.5 Acoustic Reflex Threshold setup 13.6 Acoustic Reflex Decay setup 13.7 ETF-P setup

120 120 120 122 122 123 123 124 124 126 128 129 131 134 135 135 137 142 144

14 Immittance module settings 14.1 General settings 14.2 View settings 14.2.1 Tymp. and Reflex Scr. view settings 14.2.2 Reflex Threshold view settings 14.2.3 Reflex Decay view settings 14.2.4 ETF-P view settings 14.3 Measurement settings 14.3.1 Tympanometry setup

145 145 146 146 149 149 150 150 150

Otometrics - MADSEN OTOflex 100

14.3.1.1 Tympanometry: Control Panel settings 14.3.1.2 Tympanometry: Test settings 14.3.1.3 Screening tympanometry 14.3.2 ETF-I setup 14.3.2.1 ETF-I: Control Panel settings 14.3.2.2 ETF-I: Test settings 14.3.3 Reflex Screening setup 14.3.3.1 Reflex Screening: Control Panel settings 14.3.3.2 Reflex Screening: Test settings 14.3.4 Reflex Threshold setup 14.3.4.1 Reflex Threshold: Control Panel settings 14.3.4.2 Reflex Threshold: Test settings 14.3.5 Reflex Decay setup 14.3.5.1 Reflex Decay: Control Panel settings 14.3.5.2 Reflex Decay: Test settings 14.3.6 ETF-P setup 14.3.6.1 ETF-P: Control Panel settings 14.3.6.2 ETF-P: Test settings

150 151 152 152 152 153 153 153 153 154 155 156 157 158 159 160 160 160

15 Service and maintenance 15.1 Equipment failure 15.2 Service and repair 15.3 Maintenance 15.3.1 Calibration 15.3.2 Probe cleaning and maintenance 15.4 Cleaning and disinfecting the probe tip 15.4.1 Cleaning and disinfecting the probe tip 15.4.2 Changing the wax filter 15.5 Cleaning MADSEN OTOflex 100 15.5.1 Eartips 15.5.2 Disposable articles 15.5.3 Batteries and charger 15.5.4 Battery safety information

161 161 161 162 162 162 163 164 165 166 166 167 167 167

16 Configuring the Immittance module

168

17 Troubleshooting 17.1 Powering 17.2 Testing 17.3 Communication 17.4 Probe-fit related problems

169 169 169 169 170

18 Standards and safety 18.1 Symbols used 18.1.1 MADSEN OTOflex 100 symbols 18.1.2 Charger unit symbols 18.1.3 The OTOsuite Immittance module 18.2 Warning notes 18.2.1 MADSEN OTOflex 100 warning notes 18.2.2 Charger unit warning notes 18.3 Manufacturer 18.3.1 Responsibility of the manufacturer

171 171 171 172 173 173 173 174 175 175

Otometrics - MADSEN OTOflex 100

7

19 Technical specifications

176

App. 1 MADSEN OTOflex 100 Immittance methodology and features App. 1.1 An introduction to immittance App. 1.1.1 Immittance testing App. 1.2 Tympanometry App. 1.2.1 Tympanometry testing on infants App. 1.2.2 Tympanometric features App. 1.2.3 ETF-I (Eustachian Tube Function - Intact) App. 1.2.4 Valsalva’s Maneuver App. 1.2.5 Toynbee’s Maneuver App. 1.3 Acoustic Reflex testing App. 1.3.1 Acoustic Reflex Screening App. 1.3.2 Acoustic Reflex Threshold App. 1.3.3 Acoustic Reflex Decay App. 1.3.4 Admittance monitoring App. 1.4 ETF-P (Eustachian Tube Function - Perforated) App. 1.5 Susceptance and Conductance, B/G App. 1.5.1 Susceptance, B App. 1.5.2 Conductance, G App. 1.5.3 B/G viewing of tympanograms App. 1.5.4 Component compensation

181 181 181 182 182 182 184 184 184 185 185 186 186 186 186 187 187 188 188 189

App. 2 Glossary App. 2.1 Terminology App. 2.2 Abbreviations

191 191 199

Index

8

201

Otometrics - MADSEN OTOflex 100

1

Introduction

1.1

MADSEN OTOflex 100 MADSEN OTOflex 100 is a compact and portable wireless immittance test device. It offers a complete range of capabilities for middle ear diagnostics. MADSEN OTOflex 100 can be operated anywhere as a stand-alone device or operated directly from OTOsuite. MADSEN OTOflex 100 integrates closely with the OTOsuite Immittance module, with full test control from both the device and OTOsuite. When used with OTOsuite, you gain additional features and diagnostic value offered by the comprehensive user interface and NOAH compatibility of OTOsuite.

MADSEN OTOflex 100 - OTOsuite interfacing MADSEN OTOflex 100 is designed to operate with the OTOsuite Immittance module.

Bluetooth MADSEN OTOflex 100 connects with OTOsuite via BluetoothTM, which provides wireless connection between MADSEN OTOflex 100 and OTOsuite up to a range of approximately 10 metres (approx. 33 ft), and up to a range of 100 metres (approx. 330 ft) for other electronic devices.

NOAH The NOAH System is a HIMSA product for managing clients/patients, launching hearing test applications and fitting software, and storing audiological test results. MADSEN OTOflex 100 test results can be stored in the NOAH database via OTOsuite.

1.2

The OTOsuite Immittance module The OTOsuite Immittance module offers real time presentation of test results and full test control of MADSEN OTOflex 100 directly from a PC. Test devices with integrated user interfaces can be operated independently of the Immittance module, although additional features and diagnostic value is offered by the Immittance module's comprehensive user interface and NOAH compatibility. When used for testing, the OTOsuite Immittance module adapts to the connected test device.The test functionalities of the OTOsuite Immittance module depend on the connected device, as does the selection of test parameters, and remote control. The basic Immittance module functions are described in Navigating in the OTOsuite Immittance module ► 36. The OTOsuite Immittance module lets you work with NOAH or save and view results via XML files. The OTOsuite Immittance module supports •

screening and diagnostic tympanometry

•

Reflex Threshold testing

•

Reflex Decay testing

•

ETF-P

•

user-defined tests.

Otometrics - MADSEN OTOflex 100

9

1 Introduction

MADSEN OTOflex 100 - OTOsuite interfacing MADSEN OTOflex 100 is designed to operate with the OTOsuite Immittance module. From the OTOsuite Immittance module, which is NOAH compatible, you can perform tests, monitor test results, create User Tests, store and export data, and print reports.

General features Depending on the configuration of MADSEN OTOflex 100 and the Immittance module, you can • view and print test results,

1.3

•

view the progression of a range of tests online,

•

view historic tympanometry results from NOAH or XML,

•

view online tympanometry results during testing,

•

perform “over the rim” testing, using the audiometer as a handy control panel while you follow stimulus settings and test progress on your PC display,

•

upload test results from offline tests.

Intended use MADSEN OTOflex 100 and the Immittance module Users: audiologists, ENTs and other health care professionals in testing the hearing of infants, children and adults. Use: clinical, diagnostic and screening tympanometry and reflex measurements. MADSEN OTOflex 100 uses technologies which are highly effective for clinical and screening purposes. Tympanometry and acoustic reflex measurements measure the mechanical response of the middle ear and form a basis for evaluating whether the related physiological structures are functioning correctly or not. The MADSEN OTOflex 100 probe is extremely lightweight (only 4.5 grams), and comes with comfortable, easy to insert eartips. This makes it ideal for use with children and adults. MADSEN OTOflex 100 can be configured for a wide variety of tests, and it can be operated entirely manually or programmed for the user’s own combination of manual and automatic operation. In user-programmable tests the user can select the default parameters of a particular test, and combine tests to form a sequence of preset tests.

1.4

About this manual This is your guide to using MADSEN OTOflex 100 and the OTOsuite Immittance module. It also introduces you to the key features of the product by providing you with working scenarios for performing tests and viewing and printing test results. We recommend that you read this manual and make yourself familiar with MADSEN OTOflex 100 and how it operates with OTOsuite so that you become familiar with the device before testing on a client.

Note • If you are using OTOsuite with Noah, we recommend that you are familiar with the screens and functions provided in Noah.

10

Otometrics - MADSEN OTOflex 100

1 Introduction

1.4.1

Safety Safety This manual contains information and warnings which must be followed to ensure the safe performance of MADSEN OTOflex 100.

Warning • Local government rules and regulations, if applicable, should be followed at all times.

Safety information is stated where it is relevant, and general safety aspects are described in Standards and safety ► 171.

1.4.2

Installation •

To install the new system, see Installing MADSEN OTOflex 100 ► 13.

•

To install OTOsuite, see the OTOsuite User Guide.

Connecting to MADSEN OTOflex 100 •

See Connecting a test device ► 44 and the OTOsuite User Guide.

Configuring the OTOsuite Immittance module •

See Configuring the Immittance module ► 168.

Basic OTOsuite functions The basic OTOsuite functions are described in the OTOsuite User Guide.

1.5

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.

1.5.1

Navigating this manual Menus, icons and functions to select are shown in bold type, as for instance in: •

Click the Set options icon on the toolbar or select Tools > Options

Otometrics - MADSEN OTOflex 100

11

2 Unpacking and storing

2

Unpacking and storing To install and get started with MADSEN OTOflex 100 and the OTOsuite Immittance module, follow the sequence below:

2.1

•

Install OTOsuite on the PC before you connect to MADSEN OTOflex 100 from the PC.

•

Unpack MADSEN OTOflex 100 (see Unpacking ► 12).

•

Assemble MADSEN OTOflex 100 (see Installing MADSEN OTOflex 100 ► 13).

•

Run the OTOsuite Configuration Wizard to connect to and set up communication with MADSEN OTOflex 100. (See Configuring the Immittance module ► 168).

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.

2.2

Storing If you need to store MADSEN OTOflex 100 before you put it into operation, follow the guidelines below: •

Store MADSEN OTOflex 100 and accessories in the boxes provided to protect the equipment from damage.

•

Store MADSEN OTOflex 100 and accessories in a dry environment.

Temperature range, humidity and air pressure requirements for storage and handling are stated in Technical specifications ► 176.

12

Otometrics - MADSEN OTOflex 100

3 Installing MADSEN OTOflex 100

3

Installing MADSEN OTOflex 100 1. Install OTOsuite from the OTOsuite installation disk. See the OTOsuiteInstallation Manual. 2. Install MADSEN OTOflex 100 as described in Installing MADSEN OTOflex 100 ► 13.

3.1

Views of MADSEN OTOflex 100 This section provides you with views of MADSEN OTOflex 100 and its charger from various angles, as well as instructions on how to assemble the charger.

Front view ► 13 Top view ► 14 Bottom view ► 14 Reverse side view ► 14 The charger ► 15 Desktop installation ► 17 You will find a description of the keypad and how to navigate and enter data in MADSEN OTOflex 100 in Controls and menu selections ► 28.

3.1.1

Front view A. B. C. D.

Otometrics - MADSEN OTOflex 100

Probe Probe plug Screen Keypad

13

3 Installing MADSEN OTOflex 100

3.1.2

Top view A. Contralateral socket B. Pneumatic connection C. Probe socket

3.1.3

Bottom view A. Battery casing with cover B. Charger cavity

3.1.4

Reverse side view A. Track for probe cable B. Labels

14

Otometrics - MADSEN OTOflex 100

3 Installing MADSEN OTOflex 100

3.1.5

The charger Front view A. B. C. D.

Charger tab for charging the device Charging indicator Probe test cavity Base

Rear view A. Power socket

Otometrics - MADSEN OTOflex 100

15

3 Installing MADSEN OTOflex 100

3.2

The probe 1. Probe A. Probe body B. Threaded ring C. Probe tip

2. Probe plug D. Air connector E. Transducer connector

3.3

Assembly and installation

3.3.1

Location Immittance testing is facilitated by a moderately quiet room. A sound cabin or sound treated room is not necessary. To ensure safe performance, you must make sure that MADSEN OTOflex 100 is correctly installed and that the requirements listed in Standards and safety ► 171 are complied with. MADSEN OTOflex 100 can be used as a hand-held device with no specific requirements to location. However, keep MADSEN OTOflex 100 away from all liquids and sources of heat (for detailed specifications, see Technical specifications ► 176.

16

Otometrics - MADSEN OTOflex 100

3 Installing MADSEN OTOflex 100

3.3.2

Desktop installation Mount the charger on the charger base as shown below. 1. Use the hexagonal key to screw the hexagonal screws into place. 2. Tighten the screws well so that the charger is stable when you place MADSEN OTOflex 100 in the charger. A. Charger body

B. Charger base C. Hexagonal screws D. Hexagonal key

A. Base B. Hexagonal key

Otometrics - MADSEN OTOflex 100

17

3 Installing MADSEN OTOflex 100

3.3.3

Wall mount installation 1. Drill 2 x 6 mm diameter holes 130 mm (5.12") apart. 2. Insert rawl plugs. 3. Insert the screws with the washers mounted, through the backplates of the wall mount. A. 2 screws B. 2 washers C. 2 rawl plugs

D. washer E. wall mount backplate F. plastic shelf

3.4

Powering

3.4.1

Powering MADSEN OTOflex 100 MADSEN OTOflex 100 MADSEN OTOflex 100 is powered by batteries.

Caution • Use only the battery types listed in Technical specifications ► 176.

18

Otometrics - MADSEN OTOflex 100

3 Installing MADSEN OTOflex 100

See Batteries ► 19.

Power-related settings You can customize the various power-related settings in MADSEN OTOflex 100 to suit your purposes and save power and batteries. See Device settings ► 129.

3.4.2

Powering the charger Charger The MADSEN OTOflex 100 charger is connected to the electrical power outlet. It is recommended that you leave MADSEN OTOflex 100 in the charger when not in use. This ensures that the device is always ready for testing.

Connecting the charger to the mains power outlet

Warning • Operating at the wrong voltage may blow the fuses!See the label on the charger for input voltage.

1. Before you connect the power cable to the charger, make sure that the voltage from the electrical power outlet matches the voltage shown on the identification label on the charger. 2. Connect the charger to the mains power outlet. The device is delivered preset for rechargeable NiMH batteries. 3. When you are not using the device, leave it in the charger so that it is always ready for testing.

Warning • If you use the device with Alkaline batteries, always switch off the mains power supply to the charger. Failure to do so may cause the Alkaline batteries to leak and cause damage to the device.

3.4.3

A. Power socket

Batteries Note • Do not insert the battery cover in the battery compartment if the battery compartment is empty. If you do, the cover will lock in place inside the device.

Caution • Use only the battery types listed in Technical specifications ► 176.

MADSEN OTOflex 100 checks the battery type when you switch it on or place it in the charger, and will prompt you for the battery type if it seems to be wrongly configured. If this is the case, change the battery type setting in the device to reflect the battery type you have inserted. See Battery type setting ► 21.

Otometrics - MADSEN OTOflex 100

19

3 Installing MADSEN OTOflex 100

NiMH rechargeable batteries MADSEN OTOflex 100is delivered with rechargeable NiMH batteries. •

Before you can operate MADSEN OTOflex 100, insert the batteries in MADSEN OTOflex 100.

•

Leave it to charge in the MADSEN OTOflex 100 charger for at least 14 hours, and preferably overnight, before you switch on MADSEN OTOflex 100. Rechargeable batteries will reach full capacity when they have been recharged a couple of times.

Alkaline batteries •

If needed, MADSEN OTOflex 100 can be powered by non-chargeable Alkaline batteries.

•

Remember to change the battery type setting.

Warning • If you use the device with Alkaline batteries, always switch off the mains power supply to the charger. Failure to do so may cause the Alkaline batteries to leak and cause damage to the device.

When you are using Alkaline batteries the battery icon in the top right corner of the screen will show the status of the Alkaline batteries, even if you place the device in the charger.

3.4.3.1

Inserting batteries Caution • Use only the battery types listed in Technical specifications ► 176.

Inserting batteries 1. The batteries and the battery cover are delivered in a small bag.

Note • Do not insert the battery cover in the battery compartment if the battery compartment is empty. If you do, the cover will lock in place inside the device.

2. Insert the batteries as shown. If you are in doubt, look inside the battery compartment where you will see small red plus signs indicating which way the batteries fit.

20

Otometrics - MADSEN OTOflex 100

3 Installing MADSEN OTOflex 100

3. To put the battery cover back in place, insert the cover with the curved edge facing upwards in the opening. Press the cover inwards and downwards until it clicks into place. 4. The next time you change batteries, press the cover inwards and upwards until it is released and snaps out of place.

5. Check the battery type setting in MADSEN OTOflex 100: See Battery type setting ► 21. 6. If you are using rechargeable batteries, leave MADSEN OTOflex 100 to charge for at least 14 hours, and preferably overnight, before you put it into use (see Powering the charger ► 19 for details).

3.4.3.2

Battery type setting The device is delivered preset for rechargeable NiMH batteries.

Warning • If you use the device with Alkaline batteries, always switch off the mains power supply to the charger. Failure to do so may cause the Alkaline batteries to leak and cause damage to the device.

1. If you are in doubt of the setting, or if you are using Alkaline batteries, check the battery type and the setting in the device: When MADSEN OTOflex 100 is ready for use, switch it on: Press and hold the On/Off key on the keypad. 2. Press Select to access the Menu followed by Advanced.. > Device Settings.. and scroll to Battery type. 3. Press Select to toggle to the correct battery type. You can choose between NiMH (rechargeable) and Alka(line). 4. Press the left softkey to exit. 5. If needed, press and hold the On/Off key on the keypad to switch off the device.

Power indicator An icon in the the top right corner of MADSEN OTOflex 100 shows the type of powering used. MADSEN OTOflex 100 receives power from the charger. MADSEN OTOflex 100 is powered by batteries.

3.4.3.3

First time charging Charging applies only if you use rechargeable batteries.

Otometrics - MADSEN OTOflex 100

21