amigo fitting guide · 2009-08-29 · amigo transmitters and receivers can be used with virtually...

Amigo Fitting Guide

2

Table of contentsBefore starting . . . . . . . . . . . . . . . . . . . . . . 4

Meet the Amigo Family

Get to know the T20 and T21

Programming Amigo receivers with WRP

Synchronization

Fitting steps . . . . . . . . . . . . . . . . . . . . . . . . 8Equipment you need to get started

Fitting steps

Transmitter . . . . . . . . . . . . . . . . . . . . . . . . 10

Programming

Registering a name

Changing the user channel set

Advanced DSP-Static Noise Avoidance

Enabling/disabling Team Teaching (T21 only)

Changing the Team Teaching channel set

Pre-Emphasis/De-Emphasis

Changing language

Changing contrast

Resetting the system

Transmitter data

Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Programming the Receiver

Attaching R1 & R2 Receiver

Registering a name

Assigning the receiver to an ear

Adjusting the gain

Controlling the mode switch

Controlling the LED

Disabling De-Emphasis

Beep tone frequency and volume

Setting the default channel

Disabling the manual channel change (R2/R7)

Programming the channel set

Disabling the channel seek function

Receiver data

FM Channel Wizard . . . . . . . . . . . . . . . . . 38

Using the FM Channel Wizard

Practical use . . . . . . . . . . . . . . . . . . . . . . . 44Daily use of the transmitter

Using the Amigo T20/T21 with Amigo receivers

Using the T10 & R2/R7 in the classroom

Fitting verifi cation . . . . . . . . . . . . . . . . . . 48

Verifying FM gain advantage in a test box

(Linear hearing aids)

Verifying FM gain advantage in a test box

(Non-Linear hearing aids)

Connectivity . . . . . . . . . . . . . . . . . . . . . . . 52

Connectivity to hearing aids

Connectivity to Cochlear Implants

Accessories . . . . . . . . . . . . . . . . . . . . . . . . 56

Microphone options

Accessories

3

IntroductionTo get the best out of an FM system, it must be accurately fi tted and carefully custom-

ized to fi t the individual needs of the user. Oticon Amigo offers the performance and

fl exibility to achieve this.

The Amigo product family is extremely versatile, making life easier for users in school

settings. Amigo transmitters and receivers can be used with virtually all Behind-the-Ear

hearing instruments, as well as connected to cochlear implants.

This guide will introduce you to the members of the Amigo family. And it will take

you, step by step, through the fi tting, programming and verifi cation of the transmitters

and receivers.

Once you get started, you’ll realize just how easy Amigo is to use – for adults and chil-

dren alike!

4

Meet the Amigo family

T10 T20 T21

R1 R2 R7

WRPLavaliere microphone

FM-CI adaptor

Before starting

Boom microphonesLapel microphones

Transmitters

Receivers

Accessories

5

Before starting Get to know the T20 and T21

The T20 and T21 are body-worn transmitters. They also serve as the Amigo

system’s programming and fi tting unit. No other equipment is needed to pro-

gram the Amigo receivers or transmitter. You can access the programming menu

through a special key combination.

The Amigo T21 offers a built-in team teaching function too.

High resolution LCD display

Team Teaching(T21 only)

Clear entered values

Synchronize receiver/enter

LED status indicator

ON/OFF/Mute

2.5 mm microphone jack

3.5 mm auxiliary audio input jack

“MiniB” USB charge jack

6

Programming Amigo receivers with WRPBefore starting

Oticon Amigo T10The Amigo T10 transmitter is a multi-purpose transmitter designed to be used inside and out-side the classroom.

WRPWireless Receiver Programmer allows wireless fi tting of all Amigo ear level receivers.

The WRP allows you to program the Amigo receivers (R1, R2 and R7) in

situations where you do not have Amigo T10, T20 and T21 available.

7

40 cm

SynchronizationBefore starting

Optimal distance is within 40 cm of receivers

– Attach the FM adaptor to the BTE

– Attach the Amigo Receiver to the FM adaptor

– Turn the BTE and the Amigo transmitter and receiver ON

– Synchronize the receiver with the transmitter by pressing one time on the

Sync button

Transmitter and receiver (one or more) are synchronized to the same channel

No synchronization (more than 40 cm from the transmitter)

8

Fitting stepsFitting steps

9

Equipment you need to get started

Amigo T20, T21AA NiMH battery

You can use the Amigo T20/T21 or WRP to perform a realtime wire-

less fi tting on the ear of the child. The batteries should be re-charged

over night.

Hearing aid(s) Receiver(s)R1, R2 or R7

FM adaptor(s)

FM-CI 13 batteryHA/CI batteryAmigo T10AAA NiMH batteries

Transmitter T10/T20/T21 or other systems

Batteries

Equipment

Fitting steps

10

Transmitter Transmitter

11

To start programming:

– Turn the T20/21 ON

– Press and hold the C (clear) and ON/OFF buttons simultaneously

– Three options will appear:

• View/Program Transmitter, to customize the transmitter to your

needs (Only T20/T21 and WRP)

• View/Program Receiver, to customize receivers to the child’s needs

• FM Channel Wizard, to pro-actively perform automatic channel

management

Programming

High resolution LCD display

Team Teaching (T21 only)

Clear entered values

Synchronize receiver/enter

LED status indicator

ON/OFF/Mute

2.5 mm microphone jack

3.5 mm auxiliary audio input jack

“MiniB” USB charge jack

Transmitter

T20/T21 features:

AA Standard NiMH battery

Fail safe charging sensor

Keypad lock

External antenna built into mic. cord

Transmitter and programmer in one

Multi band FM capability

All channels available

FM Channel Wizard

Programming range 20-40 cm

FM transmission range ~ 30 m

H

JennySpringfi eld Elem.

B8

12

Amigo transmitters offer two lines of display text, for the names of the teacher,

school, class or student.

To register a name:

– Use the keypad buttons to navigate

– Access standard letters, capitals and numbers/symbols by placing the cur-

sor on Shift ABC and pressing Enter. Press again, and the numbers will

appear

– Position the cursor on Save and press Sync to save the information and

return to the previous menu

– Press C (clear) to exit without saving changes

Registering a Name

To delete information:

Position the cursor on the top line of the text and backspace using

the navigation button

Transmitter

Name 1Student

B C D E F G HI J K L M N O PQ R S T U V W XY Z

Save Shift: abc

Name 1Student

1 2 3 4 56 7 8 9 0. : ‘ - #( ) + !

Save Shift: 123

13

The Amigo T20/T21 is pre-programmed from the factory with specifi c channels

available in your country. The menu will provide access to any number of chan-

nels (up to 50) that appear in your transmitter channel list.

To select specific channels:

– Position the cursor on each desired channel and press Sync to add or

remove that channel

– Save the channels selected by pressing the Left Arrow key


Changing the user channel set

For Pre-school children we recommend keeping the number of chan-

nels to a minimum. But for school children several channels might be

a good idea (if the children are chan ging classrooms or teachers, and

if more than one child is using a FM-System). Several channels can

help to avoid interference.

If you want to prevent the user from being able to change channels on

the transmitter, you can make just one channel available.

Transmitter

Channel Set

Clear All01 N0102 N0221 N6142

The channel list shows both num-bers from Oticon, and from other manufactures.

14

Advanced DSP Enable

The Amigo T20/T21 is equipped with Static Noise Avoidance (SNA). SNA

works across eight audio channels and helps to locate and reduce static noise

that might interfere with speech intelligibility. You can disable the SNA by ac-

cessing the Advanced DSP function in the programming menu.

To disable Advanced DSP:

– Position the cursor on “Disable”

– Press Sync

– Press the Arrow Left key to save your setting


Advanced DSP-Static Noise Avoidance

We strongly recommend disabling this feature prior to performing FM

verifi cation in test boxes.

The maximum gain reduction from the SNA will not exceed 4 dB and

will never be applied until the sound level exceeds 65 dB SPL.

Transmitter

15

The Team Teaching function allows two or more transmitters to be active at the

same time. This function is only available in the T21.

The T21 captures the signal from another transmitter T20, T10 or similar, and

sends it to the user. This method is useful in situations where more than one

teacher is in the classroom.

When using the Amigo transmitter with other manufacturers’ transmitters we

recommend disabling the De-Emphasis in the Amigo T21, in order to maintain

the best possible SNR when mixing the products.

The default setting is Enable, and if you need to disable this function:

– Position the cursor on Disable

– Press Sync

– Press to save your setting


Enabling/disabling Team Teaching (T21 only)

In a car situation both parents should consider wearing a transmitter,

so the child can follow what each one is saying. For the best results,

only one parent should speak at a time.

T

EnableDisable

Transmitter

16

This function allows you to choose the secondary channel set for team teaching.

To select specific channels:

– Position the cursor on each desired channel and press Sync to add or

remove that channel

– Save the channels selected by pressing the Left Arrow key


Changing the Team Teaching channel set

We recommend using the FM Channel Wizard to scan the environ-

ment in which the system is to be used, to ensure that the channels

selected are interference free.

Transmitter

T21 microphone wire routing

The correct way to wear the Amigo T21 is shown in the picture above.

Make sure that the microphone wire does not loop under the T21.

Channel Set

Clear All01 N0102 N0221 N6142

T

17

Transmitter

It is generally known that noise contributes more to the degradation of the

speech signal in higher frequency regions during transmission.

• Pre-Emphasis, in the Amigo transmitters, boosts the transmission

signal by 6 dB per octave from 2-7.5 KHz to prevent loosing SNR.

To change the default settings:

– Use the buttons to navigate and change selection

– Press Sync

– Press to save and exit


Pre-Emphasis/De-Emphasis

When using the Amigo transmitter with other manufacturers’ receiv-

ers, we recommend disabling the Pre-Emphasis in the transmitter.

De-Emphasis should be disabled (T21 only) when using another

manufacturer’s transmitter with Team Teaching .

Pre-Emphasis EnableDisable

T

18

The Amigo transmitter has been programmed with a pre-selected number

of commonly used languages.

To change the language to fit your needs:

– Position the cursor on the desired language

– Press Sync



Changing languageTransmitter

Select Language English Français Deutsch

19

We recommend optimising the contrast of the transmitter display to fi t the

lighting in the particular room.

To adjust the display contrast:

– Use the Up/Down key to adjust the contrast

– Press Sync



Contrast

Transmitter Changing contrast

20

The Reset function allows you to erase changed settings:

– If you select “Settings” and accept, the transmitter will be reset to its

factory setting.

– If you select “Transmitter” and accept, the transmitter will be reset to its

factory default state, and you must choose language and country again.

Resetting the system

Please note that changing country will alter the channel lists to match

the standardised channels for that specifi c country.

Transmitter

ResetSettingsTransmitter

21

The “About Amigo” menu will display:

– the Software version

– the Country

– the Service menu

The Service menu provides access to System Troubleshooting. This should

ONLY be performed with the guidance of Oticon Customer Service.

Transmitter data

Be sure to have the software version and country information ready

when contacting Oticon Customer Service. This information is read

only, so you will not be able to modify any data.

About Amigo T20NI Id: 0006255CDC: v1.11APP: v7.0Snc: 6.0aCO: EnglandService Menu

Transmitter

22

Receiver Programming the Receiver

23

Before starting, bring the receivers R1/R2/R7 to within 20 - 40 cm from the transmit-

ter or WRP (Wireless Receiver Programmer).

– Connect the receiver to the hearing aid/CI adaptor

– Turn both the hearing aid and the receiver ON

– Enter the programming menu by pressing and holding C (clear) and ON/OFF

simultaneously

– Position the cursor on View/Program Receiver

– Press Sync

– The display will go blank briefly

– The receiver’s serial number or name and ear will then appear on the screen

– Press Sync to begin programming the receiver

Amigo R1/R2/R7 menus display the serial number of the receiver currently being

fi tted.

Programming the Receiver

Note that if the transmitter/WRP detects more than one receiver nearby,

it will display a list of receivers only ONE Amigo receiver can be pro-

grammed at a time. The Amigo receivers R1/R2/R7 can be used with all

Amigo transmitters as well as transmitters from other manufacturers,

but only an Amigo T20/T21/WRP can program an Amigo R1/R2/R7.

Receiver

Note: The distance between the receiver and transmitter must be between 20 and 40 cm.

20 -

40 cm

24

Attaching R1, R2 & R7 Receivers

– Attach the FM adaptor to the BTE or CI

– Attach the Amigo Receiver to the FM adaptor

– Turn the BTE/CI and the Amigo transmitter and receiver ON

– Synchronize the receiver with the transmitter

Receiver orientation is important. Thus, depending on which

hearing aid/CI the receiver is attached to:

• Pull out the tabs

• Rotate the pins

• Push the tabs back in

Note: the LED should face either forwards or backwards for the

internal antennas to be oriented correctly.

Receiver

25

Registering a name

Amigo receivers offer one line of display text, for the name of the teacher, the

school, the class or the student.

To register a name:

– Use the keypad buttons to navigate

– Standard letters, capitals and numbers/symbols are available by placing

the cursor on Shift ABC and pressing Enter. Press again and the numbers

will appear

– Position the cursor on Save and press Sync to save the information and

return to the previous menu


To delete information:

Position the cursor on the top line of text and backspace using the

navigation button

Name 1Student

1 2 3 4 56 7 8 9 0. : ‘ - #( ) + !

Save Shift: 123

Receiver

26

Assigning the receiver to an ear

You can assign a receiver to an ear – a feature that can be helpful if a child is

using different settings or even different hearing aids on the two ears.

To select side:

– Position the cursor on the desired ear

– Press Sync



Receiver

Ear

Left

27

Adjusting the gain

Amigo receivers have a gain adjustment range of 30 dB. The default setting is

+12 dB in “FM only” and +12 dB in “FM+HA”. However, to achieve the correct

setting with a specifi c hearing aid, we recommend performing an FM verifi ca-

tion using a test box.

To achieve the optimal gain:

– Use the buttons to navigate and change the gain value



+12

FM+HA Gain. +30

+16

0

Amigo delivers the signal to the hearing aid at 74 dB, with a +12 FM

gain default. The hearing aid then delivers the signal to the child at

86 dB due to the FM gain.

Note that in “FM only” mode, the hearing aid microphone is attenu-

ated 20 dB.

Receiver

28

Controlling the mode switch

The receiver mode switch can be locked to FM only or FM+HA, making

the receiver tamper resistant. The default setting of the 3-position switch is

unlocked.

To change the default setting to a single function:

– Choose the desired function (use the buttons to navigate)

– Press Sync



Many of today’s hearing aids have an automatic DAI detect function

that allows the receiver to be controlled by the hearing aid controls.

In this case, we recommend locking the receiver on FM+HA. On R7

the mode is operated with the Sumo DM switch.

3-POS Switch Unlocked Lock to: FM Lock to: FM+HA

Receiver

R1, R2 R7

2-POS Switch Unlocked Lock to: FM

29

Controlling the LED

The LED on the Amigo receiver can be controlled. The LED can also be set to

blink rather than glow steadily. The default setting is steady ON.


– Use the buttons to navigate and select your setting

– Press Sync



When using the R1 or R2 for children, do remember that the LED indi-

cates that the battery is functioning and that the receiver is ON and

working together with the transmitter.

The power consumption is no more than 2.0 mA versus 1.6 mA when

blinking and 170 µA when OFF. The levels are insignifi cant, compared

to the overall power consumption of the hearing aid with receiver.

LED light Off On: Blink On: Steady

Receiver

30

Disabling De-Emphasis

It is generally known that noise contributes more to the degradation of the

speech signal in higher frequency regions during transmission.

• De-Emphasis occurs in the receiver so that the boosted (6 dB) information

is reduced back down to where it was originally.


– Use the buttons to navigate and select setting

– Press Sync



De-Emphasis EnableDisable

Receiver

Select “Disable” when using an Amigo Receiver with other manufac-

turers’ transmitters, but select “Enable” for superior audio quality

when using an Amigo transmitter.

31

Beep tone frequency and volume

Amigo receivers acknowledge synchronization commands with a small beep.

The volume and frequency of this beep can be changed to suit the hearing loss.

The three levels available are: Low, mid (standard - depending on type of HA) and

high. You can also turn off the beep completely.

The three frequencies available are 587 Hz (low), 740 Hz (mid) and 988 Hz (high).



– Press Sync



Since small children are unable to interpret the beep information,

we recommend turning this function OFF.

Receiver

Beep Tone Low

High

Beep Vol. Off Low

High

32

Setting the default channel

The Amigo receiver R1 always wakes up in the channel last used, so no re-syn-

chronization will be needed when the receiver is turned OFF or loses power. You

can choose to change this setting if you would like the receiver to wake up in a

selected default channel. R2 and R7 always wake up in the last channel used.

To choose the default channel when the receiver is turned on:


– Press Sync



Receiver

R2/R7 Channel Set Channel Set

Clear All01 N0102 N0221 N6142

Default Channel

01 N0102 N0221 N6142

Last used

33

Disabling the manual channel change (R2 and R7)

The manual channel change button on the Amigo R2 and R7 has the function of

toggling through the pre-programmed channel list as well as automatically

seeking for active channels.

To change the default setting:


– Press Sync

– Press t to save and exit


The manual channel seek button on R2 makes it extremely easy to

match channels with transmitters from other manufacturers.

You can disable the toggling button to make the receiver tamper

resistant.

Channel Button Enable

Receiver

34

Programming the channel set

Amigo R2 and R7 receivers can be programmed with any number (up to 29) of

channels that are available in the T20/T21 or the Wireless Receiver Programmer

(WRP).

To select or remove specific channels:

– Scroll to the desired channel using the buttons

– Press Sync for each channel to select or remove



Always make sure that the R2 and R7 have enough channels to avoid

interference problems. But do avoid long channel lists, as this will

lengthen the time it takes to browse through the Automatic Channel

Seek function.

Also, note that the T20, T21 and WRP will always override any chan-

nel list and force the receiver to the channel currently being synchro-

nized. This new channel will not automatically be added to the list.

However, if you set the receiver to “Last Channel Used”, the device will

remember it until the channel is changed again. We recommend to use

the channel wizard before choosing the channels.

Receiver

Channel Set

Clear All01 N0102 N0221 N6142

35

Disabling the Channel Seek function

You can toggle through the programmed list of channels on the Amigo R2, R7

receivers by pressing the Manual Channel change button. Pressing the button

for two seconds will initiate an automatic search through the entire channel list

(this function is optional in the R2). The purpose of this search is to locate the

next channel with an FM signal present.

To change the default setting:

– Position the cursor on Disable

– Press Sync



Channel Seek Enable

Receiver

36

Receiver data

The “About Amigo” menu shows the software version, serial number etc.

Do have this information ready when contacting Oticon Customer Service.

Receiver

About Amigo R2 srl: 1012161Bnd: 169-187

38

FM Channel Wizard Using the FM Channel Wizard

39


FM Channel Wizard Basics

The T20, T21 and WRP provide access to the channel wizard through the

programming menu. The T20, T21 and WRP have a built-in receiver, which is

used to monitor the FM signals and listen for interference and static noise. The

results are relative and may benefi t from additional verifi cation.

To select the FM Channel Wizard:

– Enter the Amigo Fitting Menu

– Select the FM Channel Wizard from the Fitting menu

– Press or Sync


FM Channel Wizard

Amigo Fitting MenuView/ProgramTransmitterView/ProgramReceiver

40


FM Channel Wizard Main Menu

Scan & Select Channel Set:

– All available channels will be tested and evaluated automatically in order

to find the best choice of channel

Scan & Select Primary and TT Channels (T20/T21 only):

– Chooses the best channel combination for Team Teaching

Monitor Single Channel:

– The purpose of this function is to analyze and evaluate a single channel by

means of listening to it

During the actual scanning process the momentary results will be

shown as bars, indicating the level of interference. The more bars,

the more interference. The fi nal scan results will be shown as a

list.

FM Channel Wizard

Scan & SelectPrimary & Ch.MonitorSingle Channel

FM Channel Wizard

41


Scan and select the Channel Set:

– Select Scan & Select Channel Set

– The transmitter will then start scanning all channels in the channel list

– The Channel Set screen will appear, showing “good” channels in bold and

“poor” channels in grey

– Press to accept the new channel set, with only the good channels

– Press Clear All to de-select all channels. At least one channel must be

chosen before exiting the menu

– Press to exit and save, or press C (clear) to exit without saving changes

321

Channel Set

Clear All01 N0102 N0221 N6142

FM Channel Wizard

Scan & SelectPrimary & Ch.MonitorSingle Channel

Scan & SelectChannel Set

42


Scan & Select Primary & T Channels:

– Select Scan & Select Primary & T

– The transmitter will start scanning all channels in the channel list

When the scan is done, screen 2 will appear.

Start with Primary or TT channel

Select Primary Channel:

– “Good” channels are in bold

– “Bad” channels are in grey

– Press Sync to choose a channel

– Press to save your selection and exit to screen 4

Select TT Channel:

– To avoid interference between the primary and TT channel, the transmitter

will grey out the channels that are too close to the primary channel

– “Good” channels are in bold

– “Bad” channels are in grey

– Press Sync to choose a channel

– Press to save your selection and exit to screen 6

– Press to exit and save channels to the channel set


1

2

3

4

5

6Primary Channel01 N0102 N0221 N6124 N6432 N7242

Channel01 N0102 N0221 N6124 N6432 N7242

T Scan & Select Primary & Ch’s Primary: :

T

T

Scan & Select Primary & Ch’s Primary: 01 N01 : 32 N72

T

T

Scan & Select Primary & Ch’s Primary: 01 N01 :

T

T

Scan & SelectChannel Set

Note: If there are preferred T channels available, they will be marked with a star .

43

FM Channel Wizard

Monitor Single Channel:

– Plug the headphones into the auxiliary jack

– Select Monitor Single Channel

– The transmitter will immediately start listening to the last channel used

– Press to change channels

The bars indicate the level of interference of the signal on that channel.

– Press or to select headphone volume

– Press to adjust volume

– Press C or to exit

1

2

3

The wizard does NOT distinguish between desired signal and

inter ference; you must use headphones for this and listen for the

signal clarity. The microphone must be connected to function as

an antenna. It will be muted automatically.


FM Channel WizardScan & SelectChannel SetScan & SelectPrimary & Ch.MonitorSingle Channel

+4

MonitorSingle Channel

44

Practical usePractical use

45

Daily use of the transmitter

WRP T20 and T21 Transmitter:

ON/OFF

– Press and hold for 1.5 seconds

Mute (T20 , T21):

– ON/OFF one touch

Team Teaching (T21 only):

– One touch T

Keypad lock:

– Press and hold and for 5 seconds

Changing Channels:

– Press and hold or for 5 seconds

– Channel begins to blink

– Press or to change channels

– Press Sync to lock the channel (aborts to last used after 10 seconds)

Rotate the display 180°:

– Press C and or simultaneously

Practical use

46

Using the Amigo T20/T21 with Amigo receivers

Using the Amigo T20/T21 with Amigo receivers in a class-

room.

Practical use

Connect the Amigo receivers to the FM adaptors and turn

the receivers to FM+HA setting (unless the switch is dis-

abled).

Connect the FM adaptors and receivers to the hearing aids

(or CIs) and make sure the instruments are on and the bat-

teries are working.

If not done automatically, be sure to set the hearing aid/CI

to FM program and adjust volume if necessary.

Make sure the transmitter’s battery is fully charged

(if necessary, use standard Alkaline batteries).

Attach the transmitter’s external microphone, which has a

built-in antenna.

Turn the transmitter on. Synchronize the receivers from

within a distance of max. 40 cm.

Check that the receiver acknowledge the Sync command

by blinking 3 times.

Check that both receiver LEDs are on.

Attach the microphone to your clothing and place it within

15-20 cm of your mouth; then place the transmitter some-

where convenient.

Note: Do not wrap the microphone cable around the trans-mitter when Team Teaching.

47

Using the T10 & R2/R7 in the classroom

Using the T10 & R2 in the classroom.

Practical use

Connect the Amigo receivers to the FM adaptors and make

sure the receiver is in the FM+HA setting (unless the

switch is disabled).

Connect the FM adaptors+ receivers to the hearing aids

(or CIs) and make sure that the instruments are on and the

batteries are working.

If not done automatically, be sure to set hearing instru-

ment/CI to FM program and adjust the volume if

necessary.

Make sure the transmitter has fully charged batteries

(if necessary, use standard Alkaline batteries).

Attach the transmitter’s external antenna.

Turn the transmitter on to Focus mode and place around

the neck of the speaker – adjust distance to mouth to 15 cm

(if using lavalier style).

Press the Channel Seek button on the R2/R7 for two

seconds and wait for the synchronization to automatically

occur.

If no channel, or the wrong channel is found, press

Channel Seek again.

The LED will turn on when the receiver is synchronized

and working correctly.

48

Fitting verifi cationFitting verifi cation

49

Gain Balance

Before starting:

On the hearing aid:

– Turn OFF noise reduction

– Turn OFF Feedback cancellation

– Turn OFF Fixed directionality

Preparing T20 or T21 for the test:

– Turn OFF Advanced DSP

– Check Pre/De-Emphasis

Consider the noise used for the test:

– Different Boxes have different noises and different names for the same

noises

– More complex speech-like signals are preferable in order to obtain a

more realistic result

– White noise, pink noise and pure tone sweeps should be avoided

Fitting verifi cation

Fitting FM systems in test boxes:

Measurements and fi tting of the FM systems in test boxes are an easy method to

get repeatable and controlled data but they do not always correspond to realistic

situations:

– Synthetic signals used in tests

– Difference between assumed speech sound pressure level and the actual

talker’s level

– Difference in microphone amplification in near-field and far-field, compli-

cated non-linear behavior of the FM system and hearing aid and more

– It is very important to make subjective test on the student user to validate

the performance

– Before fitting an FM system, make sure that the hearing aid is fitted cor-

rectly

50

FM BalanceFitting verifi cation

• Measure the hearing aid response at 65dB SPL through the coupler microphone (Curve 1).

• The hearing aid is taken out of the box and put aside, still connected to the coupler.

• The receiver is attached to the hearing aid and turned on.

• The transmitter microphone is then placed on the same reference position in the box and the measurement is repeated at 65dB SPL (Curve 2).

• The two measurements are compared to see if the levels are similar. In case that the FM output is different than the aid, the receiver gain should

be adjusted accordingly. The process is repeated until the two curves more or less overlap.

• Finally, the FM system is measured again at 80dB SPL (Curve 3). Because of transmitter compression, you will expect to see an FM advantage

from 0 to 10dB. (Curve 3).

Curve 1 Curve 2 Curve 3

52

Connectivity Connectivity with hearing aids

53

Low Level Input

Bodyworn FM systems e.g.

Solaris

AP 501399-51-440-03*

Transparent

AP 201399-50-360-05

Beige

AP 502399-51-441-04*

Transparent

AP 202399-50-370-07

Beige

FM 5 399-51-170-07*

Transparent

FM 3399-51-180-09*

Transparent

High Level Input

TV, stereo, MP3 player, CD player, Computer

Adaptor for AMIGO receivers and

other ear-level plug-in receivers

Hearing Aid

DAI Adaptor FM Adaptor

Oticon Hearing Instruments and DAI/FM compatibility Overview 2006

* includes tool for making hole in battery door



Adapto, Gaia, Atlas Plus Direct, GO Direct DigiFocus II (all V2*)

* if not marked V2 on battery door, aid must be sent to Oticon for modification.

AP 800399-51-480-00*

Transparent

FM 8399-51-470-00*

Transparent

* includes tool for adaptor lock * input levels are set manually

* includes tool for adaptor lock


Universal and dedicated AMIGO

receivers

FM receiver

RI/R2Silver

DigiFocus II Super Power,300P

Oticon Syncro, Oticon Safran,Oticon Tego Pro,Oticon Tego, GoPro

RI/R2Silver

RI/R2Silver

R1: R2: R7:

AP 301399-50-340-00

Beige

AP 302399-50-350-03

Beige

FM 3399-51-180-09*

Transparent

AP 600399-50-460-06*

Transparent

FM 6399-50-450-04*

Transparent

Atlas, Atlas Plus, GO, (all except Direct) Ergo, Swift

Hearing Aid

DAI Adaptor FM Adaptor


* includes tool for adaptor lock* input levels are set manually

* includes tool for adaptor lock

Low Level Input

Bodyworn FM systems

e.g. Solaris

High Level Input

TV, stereo, MP3 player, CD player, Computer

Adaptor for AMIGO receivers and

other ear-level plug-in receivers

380P, 390PL

AP 401399-50-276-02

Transparent

AP 402399-50-286-04

Transparent

FM 4399-51-130-08*

Transparent


Digifocuc, Personic

AP 700399-50-900-08*

Grey

FM 7399-50-920-02

Grey

FM receiver

Universal and dedicated AMIGO

receivers

R1/R2/R7Silver

* input levels are set manually

R1/R2Silver

R1/R2Silver

R1/R2Silver

CI Processors from various manufacturers

FM-CICochlear implant

adaptor140-08-110-00

R1/R2Silver

Sumo DM, Sumo XP, Sumo E, Swift 120+

910

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in D

enm

ark

FM receiverorder infomation: 140-06-000-00 140-06-100-00

140-06-200-00 140-06-300-00140-06-600-00 140-06-700-00

R1:R2:R7:

169-187 MHz 216-217 MHz

Connectivity with hearing aids

Each hearing aid has a specifi c FM adapter and it is essential to fi nd the right one. If you are having diffi culty with this, please contact your hearing aid company for help. Oticon has produced a compatibility overview that makes it easier for you to fi nd the right shoe.

General connectivity to hearing aids

The Amigo receiver is compatible with virtually any BTE from any manufac-

turer.

When using a FM adaptor for a hearing aid it is critical to investigate if any

modifi cations are necessary on that specifi c hearing aid.

Additionally it is important to note that many modern hearing aids have “DAI

detect”. This means they will detect the FM receiver in the same instant it is

put on the hearing aid. With many of these hearing aids the FM receiver is con-

trolled either by toggling the program button to the dedicated FM program (if

not done automatically) or by switching to the FM program on a visible control

switch. The receiver must in this case be set to FM+HA and it is recommended

for these users to lock the receiver 3-position switch in this position.

When connecting Amigo receivers to hearing aids, it is critical that the Eurocon-

nector is oriented so the LED is positioned either to be visible from the front or

the back. This will also ensure optimal orientation of the built-in antennas.

Please refer to the compatibility database on www.Amigofm.com for

more detailed hearing aid compatibility information.

Connectivity

54

General connectivity to CI

The Amigo receivers R1/R2 can be connected to most cochlear im-

plant processors through the use of an adaptor. These can either be

ear-level or attached to body worn processors.

Connecting through the Amigo FM-CI bodyworn adaptor

The Amigo receivers R1/R2 can be connected directly to the Amigo

FM-CI adaptor. With the adaptor a number of short cords are avail-

able to suit different processors. The adaptor can also be connected

through a longer cord directly to an ear level processor through a

dedicated ear level adaptor provided by the CI manufacturer.

Connectivity to Cochlear ImplantsConnectivity

CI speech processor

Amigo FM-CI bodyworn adaptor

55

Connecting through ear level adaptors

Several ear level cochlear implant processors have a dedicated

adaptor to connect the receiver to either directly or via a DAI cable.

As the CI processors, speech coils can cause interference, it may

be necessary to deactivate or disconnect the speech coil in order to

perform wireless synchronisation or programming. The interference

level can vary dependant on what mapping is used in the processor.

The adaptor has its own battery source and can also be used for

powering receivers when programming them. This way it is not

necessary to disconnect the speech coil or removing the ear level

processor during programming.

Please refer to the Amigo CI fi tting guides as well as the user guide

for the individual CI processor for detailed CI fi tting information.

Connectivity to Cochlear ImplantsConnectivity

56

Accessories Accessories

57

Accessories Microphone options

2.5 mm Boom microphone (Optional for T20/T21)

3.5 mm Boom microphone (Optional for T10)

Lavalier microphone (Optional for T20/T21)

2.5 mm Omni directional lapel micro-

phone (Default for T20/T21)

2.5 mm Directional lapel microphone

(Optional for T20/T21)

3.5 mm Directional lapel microphone

(Optional for T10)

58

Accessories Accessories

Audio cable – 3.5/3.5 mm

Audio cable 3.5 mm/Phono

AA rechargeable NiMH battery (T20/T21)

AAA rechargeable NiMH batteries (T10)

MiniB USB charger (T20/T21)

Headphones.

By connecting the receiver to the head-

phones one can listen to the T10 signal.

Amigo T10 charger

We believe that it takes more than

technology and audiology to create the

best hearing instruments. That’s why we

put the individual needs and wishes of

people with a hearing loss fi rst in our de-

velopment of new hearing care solutions.

www.oticon.com

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amigo fitting guide · 2009-08-29 · amigo transmitters and receivers can be used with virtually...

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