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3.8 Working with Individual Setups (Test Protocols)
The HIT440 module is pre-programmed with standard test protocols (IEC and ANSI) ready for use which can be selected from the front screen. However, you may wish to create an individual test protocol accommodating for personal preferences and test methods.
This section describes both how to select a pre-programmed test protocol and how to create an individual test protocol.
3.8.1 Selecting a (standard) test protocol:
1. Open the Affinity Suite from Noah, OtoAccess™, or stand-alone.
2. Go to the HIT440 by clicking the HIT tab.
3. In the List of Protocols all customized and standard test protocols are listed.
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3.8.2 Designing a Customized Test Protocol
The following sections describe how to setup your own test protocol in the HIT440 setup. All setup options for all tests will be described even though you most likely will only need a few. This section is therefore to be seen as a work of reference where single functions can be looked up rather than a step-by-step guide where all steps need to be explored.
1) Enter the REM440 setup by pressing Menu/Setup/HIT440 setup.
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2) Press New.
3) A pop-up will ask whether the new test protocol should be based on a copy of the currently selected test protocol. When asked by the message box:
Yes: The system will create a copy of the current test and allow you to add new tests, make changes, and save it under a new name.
No: The Selected tests section will be blank and you can create a new test from scratch
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4) Name the test protocol setup in the Selected protocol section.
5) Select the tests to be included in the test protocol. Mark a test by clicking on it and press the Add .
Double clicking on a test will also select it.
Choose all the tests for the test protocol using this procedure.
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6) To remove a test selected by mistake, mark it under Selected tests and press Remove . The test will then jump back to the Test selection list.
7) If the order of the tests is to be changed, use the two Move arrow buttons.
Mark the test to be moved and press one of the arrow buttons. Depending on the direction of the selected arrow, the test will then jump up or down.
8) To make adjustments to the parameters of each selected test press Settings .
9) In General settings find the following additional options:
Display combined screen allows for comparing different curves by default in the same graph. The option is also available from the front screen. Which curves to
compare can be setup individually (see section 0).
Coupler allows you to select the preferred coupler to be used in the test protocol.
Select from 0.6 cc, 1.2 cc, 2 cc, and Ear simulator (IEC 711) . The skull Simulator will appear her if the license for it exists in your Affinity 2.0 unit.
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Note: Prior to creating a new test protocol you may wish to select a protocol type in the Protocols to view dropdown list . This function is practical if you for example wish to create a new protocol based on elements from the ANSI or
IEC standard. In this case the dropdown list can be used to select an ANSI or IEC standard before clicking New . When asked if the new protocol should be based on a copy of the currently selected protocol, click yes .
3.8.2.1 Frequency Response Settings
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1) Ensure that Frequency Response is marked in the left hand side of the screen. The name of the test will then appear in the Name of selected test section. Note the option to write a new name for the test in this section (e.g. “Frequency Response 65 dB input”)
2) Stimulus Selection:
Input Level: Set the input level using the slider.
Preconditioning : This is relevant when using broadband signals such as ICRA (see section
3.6.6.1 for details). Select a duration using the slider.
Stimulus type:
Select a stimulus using the dropdown list (See stimulus list in section 3.12.1).
Sweep delays: This is relevant if Continuous measurement is selected for Pure Tone or Warble
Tone. In this case sweep delays (in milliseconds) may be entered between the individual
sweeps (see section 3.6.6.2 for details).
Start Frequency and Stop Frequency: Select the preferred frequencies using the sliders. To avoid low frequency noise set the slider to a start frequency of 200Hz.
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Averaging time: Decide the number of FFTs shall be used for the averaging of non-linear stimuli like ICRA noise, real speech or other wave based stimuli. The longer average the more reproducible test results will be.
Continuous: This check box allows you to make the measurement ongoing rather than a single sweep. This may, however, also be done in the front screen using the continuous button:
When continuous is ticked, the stimulus and recording will continue until you press the STOP button.
3) Multiple Curves:
If you wish to have multiple curves at different input levels in the same graph use the Multiple
Curves option. Set the first level using the Input level slider and press Add under Multiple
Curves . The level will then appear in the corresponding white section. Select the second level and press Add again. The new level will then be listed below the first one. Follow this procedure until the preferred number of curves has been achieved. If a level is selected by mistake click mark it in the white section by clicking on it and press Remove .
4) Input Selection:
Choose whether the Frequency Response should be performed through the Speak er or Coil .
TMFS coil may also be selected. If measuring through the coil, please ensure that the telecoil in the hearing aid is activated.
5) Reference Frequency:
Ref f: Tick this option to select a single reference frequency using the slider. After measuring the curve the level at the reference frequency will be displayed in the measurement details table.
HFA/SPA : Tick this option in order to select three frequencies at a fixed distance using the slider. After measuring the curve the reference frequency average will be displayed in the in the measurement details table.
6) Tolorance Limits:
Set limits: Press the button to define individually preferred tolerance limit values. By applying tolerance limits to the recording, it will be possible to easily document whether a curve is inside tolerances or not. In the Tolerance limits screen tolerance limits may be entered as numerical frequency specific values for Low limit and High limit . Alternatively Lower Limits and Higher Limits may be entered by clicking with the mouse directly on the dots in the coordinate system and dragging them to the preferred position.
Display Tolerance Limits: Tick the box to activate the tolerances which will then be shown on the graph in the front screen.
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Note: In the General Setup it is possible to set a warning, which will pause the test and prompt the user if a recording falls outside tolerance limits.
7) Recording Method:
Resolution (of frequency): Select the preferred resolution in the dropdown. The higher the resolution the slower the measurement.
Keep in mind that 1/3 is what is used in many hearing aid manufacturers software. If the curve is to be compared to this you may consider choosing this resolution. Also note that when using a broad band signal the dropdown list will be greyed out and automatically choose FFT. This makes the distance between frequency bins 43 Hz which ensures precision in the measurement.
Smoothing Index: You have the option to smooth the measured curve using the slider (see
section 3.6.7 for details). The higher index number selected the more smoothing is applied
8) Test Settings :
Battery simulator: Select the correct battery type for the hearing aid to be used under the test.
In general Zinc-air types will give best results, particularly on power hearing aids, as this battery type is best at providing current. If a Zinc-air battery type is selected, then an estimated battery lifetime is calculated as part of the Battery Current Drain test. If Standard battery is selected, a traditional high quality zinc-air battery is simulated. Additional battery types may be custom designed with specific characteristics by the HIT440. This can provide interesting information on how a particular hearing aid performs with a good battery and with a poor battery.
If “Not Used” is selected no power is supplied by the battery simulator.
Color: Select a colour for the Right and Left curve.
Press each of the buttons to have the custom colour selection below. Choose the desired colour by clicking on it and press OK .
Note the option to Define Custom Colours to get a more extensive selection. When having found the exact colour, press Add to Custom Colours .
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3.8.2.2 Gain Curve settings
Settings for Gain Curve are identical to the settings described above for Frequency Response. Please refer
to section 0.
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3.8.2.3 Harmonic Distortion Settings
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1) Ensure that Harmonic Distortion is marked in the left hand side of the screen. The name of the test will then appear in the Name of selected test section. Note the option to write a new name for the test in this section (e.g. “Harmonic Distortion 500 and 1000 Hz”)
2) Frequency List:
Frequency dropdown lists: Select the frequencies to be included in the distortion measure.
Open the dropdown lists of the preferred frequencies and select at which input level the test is to be performed from the selection list.
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3) Tolorance Limits:
Set limits: Press the button to define individually preferred tolerance limit values. By applying tolerance limits to the recording, it will be possible to easily document whether a curve is inside tolerances or not. In the tolerance limits screen the upper limits may be entered as numerical frequency specific values. Note, however, that this is only possible for the frequencies chosen in the Frequency list see point 2) above. Alternatively, limits may be entered by clicking with the mouse directly on the dots in the co-ordinate system and dragging them to the preferred position.
Display Tolerance Limits: Tick the box to activate the tolerances which will then be shown on the graph in the front screen.
Note: In the General Setup it is possible to set a warning, which will pause the test and prompt the user if a recording falls outside tolerance limits.
4) Test Settings :
Battery simulator: Select the correct battery type for the hearing aid to be used under the test.
In general Zinc-air types will give best results, particularly on power hearing aids, as this battery type is best at providing current. If a Zinc-air battery type is selected, then an estimated battery lifetime is calculated as part of the Battery Current Drain test. If Standard battery is selected, a traditional high quality zinc-air battery is simulated. Additional battery types may be custom designed with specific characteristics by the HIT440. This can provide interesting information on how a particular hearing aid performs with a good battery and with a poor battery.
If “Not Used” is selected no power is supplied by the battery simulator.
Color: Select a colour for the Right and Left curve.
Press each of the buttons to have the custom colour selection below. Choose the desired colour by clicking on it and press OK .
Note the option to Define Custom Colours to get a more extensive selection. When having found the exact colour, press Add to Custom Colours .
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5) Input Selection:
Choose whether the Harmonic Distortion measurement should be performed through the
Speak er or Coil . TMFS coil may also be selected. If measuring through the coil, please ensure that the telecoil in the hearing aid is activated.
3.8.2.4 Input/Output Settings
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1) Ensure that Input/Output is marked in the left hand side of the screen. The name of the test will then appear in the Name of selected test section. Note the option to write a new name for the test in this section (e.g. “Input/Output 40 dB input”)
2) Stimulus selection:
Start level & Stop level: Set the start and stop levels expressed in dB SPL using the sliders.
Stimulus type:
Select a stimulus using the dropdown list (See stimulus list in section 3.12.1).
Continuous: This check box allows you to make the measurement ongoing rather than a single sweep. This may, however, also be done in the front screen using the continuous button:
When continuous is ticked, the stimulus and recording will continue until you press the STOP button.
Preconditioning : This is relevant when using broadband signals such as ICRA (see section
3.6.6.1 for details). Select a time using the slider.
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Sweep delays: This is relevant if Continuous measurement is selected for Pure Tone or Warble
Tone. In this case sweep delays (in milliseconds) may be entered between the individual
sweeps (see section 3.6.6.2 for details).
Stimulus Frequency: Select the frequency of the input stimulus using the slider.
Show gain values: Tick the box to show the Input/Output in dB gain as well as dB SPL.
3) Recording Method:
Stimulus resolution : Select the stimulus resolution using the slider.
Sweep Speed: Select the speed using the slider. The sweep speed affects the precision of the knee-point calculation. The slower speed the higher precision. The current speed will be written just above the slider expressed in dB per second.
4) Test Settings:
Battery simulator: Select the correct battery type for the hearing aid to be used under the test.
In general Zinc-air types will give best results, particularly on power hearing aids, as this battery type is best at providing current. If a Zinc-air battery type is selected, then an estimated battery lifetime is calculated as part of the Battery Current Drain test. If Standard battery is selected, a traditional high quality zinc-air battery is simulated. Additional battery types may be custom designed with specific characteristics by the HIT440. This can provide interesting information on how a particular hearing aid performs with a good battery and with a poor battery.
If “Not Used” is selected no power is supplied by the battery simulator.
Color: Select a colour for the Right and Left curve.
Press each of the buttons to have the custom colour selection below. Choose the desired colour by clicking on it and press OK .
Note the option to Define Custom Colours to get a more extensive selection. When having found the exact colour, press Add to Custom Colors .
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3.8.2.5 Intermodulation Distortion Settings
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1) Ensure that Intermodulation Distortion is marked in the left hand side of the screen. The name of the test will then appear in the Name of selected test section. Note the option to write a new name for the test in this section (e.g. “Intermodulation Distortion 500, 1000 & 2000 Hz”).
2) Frequency Selection:
Frequencies: Select the frequencies to be included in the Intermodulation Distortion measure by ticking the boxes.
3) Settings:
Input level: Select the input level (expressed in dB SPL) using the slider.
Difference F2-F1: Decide the difference between the first two formants (expressed in Hz) using the slider. When the two frequencies are close to each other a coupling (third signal) between them will be greater than if the distance was larger.
4) Tolorance Limits:
Set limits: Press the button to define individually preferred tolerance limit values. By applying tolerance limits to the recording, it will be possible to easily document whether a curve is inside tolerances or not. In the tolerance limits screen the upper limits may be entered as numerical frequency specific values.
Note, however, that this is only possible for the frequencies chosen in the Frequency selection see point 2) above. Alternatively, limits may be entered by clicking with the mouse directly on the dots in the co-ordinate system and dragging them to the preferred position
Display Tolerance Limits: Tick the box to activate the tolerances which will then be shown on the graph in the front screen.
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Note: In the General Setup it is possible to set a warning, which will pause the test and prompt the user if a recording falls outside tolerance limits.
5) Test Settings :
Battery simulator: Select the correct battery type for the hearing aid to be used under the test. In general Zinc-air types will give best results, particularly on power hearing aids, as this battery type is best at providing current. If a Zinc-air battery type is selected, then an estimated battery lifetime is calculated as part of the Battery Current
Drain test. If Standard battery is selected, a traditional high quality zinc-air battery is simulated. Additional battery types may be custom designed with specific characteristics by the HIT440. This can provide interesting information on how a particular hearing aid performs with a good battery and with a poor battery.
If “Not Used” is selected no power is supplied by the battery simulator.
Color: Select a colour for the Right and Left curve.
Press each of the buttons to have the custom colour selection below. Choose the desired colour by clicking on it and press OK .
Note the option to Define Custom Colours to get a more extensive selection. When having
found the exact colour, press Add to Custom Colors .
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3.8.2.6 Attack/Recovery Time Settings
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1) Ensure that Attack/Recovery Time is marked in the left hand side of the screen. The name of the test will then appear in the Name of selected test section. Note the option to write a new name for the test in this section (e.g. “Attack/Recovery low 50, high 90”).
2) Stimulus Selection:
Pre-stimulus: Set the pre-stimulus time in milliseconds using the corresponding slider. The pre-stimulus sets the low level stimulus prior to presentation of the higher level signal which prompts the hearing aid compression to be activated and turn down gain.
Time scale: Set the time window of the full recording in the Time scale slider. This indirectly also sets the duration of the high level stimulus, which is always 50% of this time window.
Example: A 300mS time window setting will provide a test where the high level stimulus has a duration of 150mS.
Stimulus frequency: Select the preferred frequency for the Attack/Recovery measure using the slider.
3) Attack/Recovery Levels:
Low: Select the low stimulus level to be present at the beginning and the end of the test.
High: Select the high stimulus level to be presented in a time window during the test.
Note: The test reports the output of the hearing aid, which will of course be different from the stimulus levels set here.
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4) Sweeps :
Number of sweeps: Select a number of sweeps using the slider. To average out noise which may influence particularly low level recordings, you may select to do multiple recordings
(sweeps) which are then averaged together to reduce noise. Only the averaged curve will be displayed.
5) Test Settings :
Battery simulator: Select the correct battery type for the hearing aid to be used under the test.
In general Zinc-air types will give best results, particularly on power hearing aids, as this battery type is best at providing current. If a Zinc-air battery type is selected, then an estimated battery lifetime is calculated as part of the Battery Current Drain test. If Standard battery is selected, a traditional high quality zinc-air battery is simulated. Additional battery types may be custom designed with specific characteristics by the HIT440. This can provide interesting information on how a particular hearing aid performs with a good battery and with a poor battery.
If “Not Used” is selected no power is supplied by the battery simulator.
Color: Select a colour for the Right and Left curve.
Press each of the buttons to have the custom colour selection below. Choose the desired
colour by clicking on it and press OK .
Note the option to Define Custom Colours to get a more extensive selection. When having found the exact colour, press Add to Custom Colours .
6) Extra Curves:
Show on/off times : Tick the boxes to show two thin lines showing when the level is shifted on the graph.
Show gain curve : Tick the box to show again curve on screen together with the
Attack/Recovery curve.
Show reference curve: Tick the box to show a reference curve on the graph. The reference curve shows the level from the reference microphone.
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3.8.2.7 Battery Current Drain Settings
Settings for Battery Current Drain are identical to the settings described above for Frequency Response.
Please refer to section 0.
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3.8.2.8 Equivalent Input Noise Settings
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1) Ensure that Equivalent Input Noise is marked in the left hand side of the screen. The name of the test will then appear in the Name of selected test section. Note the option to write a new name for the test in this section (e.g. “Equiv. Input Noise 60 dB input”).
2) Stimulus Selection:
Input Level: Set the input level using the slider.
Start Frequency and Stop Frequency: Select the preferred frequencies using the sliders. To avoid low frequency noise set the slider to a start frequency of 200Hz.
Averaging time: Decide the number of FFTs that shall be used for the averaging of non-linear stimuli like ICRA noise, real speech or other wave based stimuli. The longer average the more reproducible test results will be.
Stimulus type:
Select a stimulus using the dropdown list (See stimulus list in section 3.12.1).
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3) Reference Frequency:
Ref f: Tick this option to select a single reference frequency using the slider. After measuring the curve the level at the reference frequency will be displayed in the measurement details table.
HFA/SPA : Tick this option in order to select three frequencies at a fixed distance using the slider. After measuring the curve the reference frequency average will be displayed in the in the measurement details table.
4) Tolorance Limits:
Set limits: Press the button to define individually preferred tolerance limit values. By applying tolerance limits to the recording, it will be possible to easily document whether a curve is inside tolerances or not. In the Tolerance limits screen tolerance limits may be entered as numerical frequency specific values for Low limit and High limit . Alternatively Lower Limits and Higher
Limits may be entered by clicking with the mouse directly on the dots in the co-ordinate system and dragging them to the preferred position.
Display Tolerance Limits: Tick the box to activate the tolerances which will then be shown on the graph in the front screen.
Note: In the General Setup it is possible to set a warning, which will pause the test and prompt the user if a recording falls outside tolerance limits.
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Recording Method:
Resolution (of frequency): Select the preferred resolution in the dropdown. The higher the resolution the slower the measurement.
Keep in mind that 1/3 is what is used in many hearing aid manufacturers software. If the curve is to be compared to this you may consider choosing this resolution. Also note that when using a broad band signal the dropdown list will be greyed out and automatically choose FFT. This makes the distance between frequency bins 43 Hz which ensures precision in the measurement.
Smoothing Index: You have the option to smooth the measured curve using the slider (see
section 3.6.7 for details). The higher index number selected the more smoothing is applied
5) Test Settings :
Battery simulator: Select the correct battery type for the hearing aid to be used under the test.
In general Zinc-air types will give best results, particularly on power hearing aids, as this battery type is best at providing current. If a Zinc-air battery type is selected, then an estimated battery lifetime is calculated as part of the Battery Current Drain test. If Standard battery is selected, a traditional high quality zinc-air battery is simulated. Additional battery types may be custom designed with specific characteristics by the HIT440. This can provide interesting information on how a particular hearing aid performs with a good battery and with a poor battery.
If “Not Used” is selected no power is supplied by the battery simulator.
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Color: Select a colour for the Right and Left curve.
Press each of the buttons to have the custom colour selection below. Choose the desired colour by clicking on it and press OK .
Note the option to Define Custom Colours to get a more extensive selection. When having found the exact colour, press Add to Custom Colors .
6) Eq input noise display
Curve: Select this option to see the measurement as a curve.
Figure: Select this option to see the measurement as a figure.
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3.8.2.9 Reference Test Gain Settings
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1) Ensure that Reference Test Gain is marked in the left hand side of the screen. The name of the test will then appear in the Name of selected test section. Note the option to write a new name for the test in this section (e.g. “Equiv. Input Noise 60 dB input”)
2) Stimulus Selection:
Input Level: Set the input level using the slider.
Stimulus type: Select a stimulus using the dropdown list (Note that only Pure Tone and Warble
Tone are available).
3) Reference Frequency:
Ref f: Tick this option to select a single reference frequency using the slider. After measuring the curve the level at the reference frequency will be displayed in the measurement details table.
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HFA/SPA : Tick this option in order to select three frequencies at a fixed distance using the slider. After measuring the curve the reference frequency average will be displayed in the in the measurement details table.
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Test Settings :
Battery simulator: Select the correct battery type for the hearing aid to be used under the test.
In general Zinc-air types will give best results, particularly on power hearing aids, as this battery type is best at providing current. If a Zinc-air battery type is selected, then an estimated battery lifetime is calculated as part of the Battery Current Drain test. If Standard battery is selected, a traditional high quality zinc-air battery is simulated. Additional battery types may be custom designed with specific characteristics by the HIT440. This can provide interesting information on how a particular hearing aid performs with a good battery and with a poor battery.
If “Not Used” is selected no power is supplied by the battery simulator.
Color: Select a colour for the Right and Left curve.
Press each of the buttons to have the custom colour selection below. Choose the desired colour by clicking on it and press OK .
Note the option to Define Custom Colours to get a more extensive selection. When having found the exact colour, press Add to Custom Colors .
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3.8.2.10 Directionality Settings
Settings for Directionality are identical to the settings described above for Frequency Response with the
exceptions listed below. Please refer to section 0 for details regarding the additional test settings.
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1) Display result as:
Response: Tick this option to have the measurement displayed in dB SPL.
Gain: Tick this option to have the measurement displayed in dB gain.
Note: The Input selection options and Multiple curves are not available for Directionality.
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3.8.2.11 Single Frequency Settings
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1) Ensure that Single Frequency is marked in the left hand side of the screen. The name of the test will then appear in the Name of selected test section. Note the option to write a new name for the test in this section (e.g. “Single Frequency 1000 Hz”)
2) Stimulus Selection:
Input Level: Set the input level using the slider.
Stimulus type: Select a stimulus using the dropdown list. Note that only Pure Tone and Narrow
Band Noise are available.
Start Frequency: Select the preferred frequency using the slider.
Continuous: This check box allows you to make t h e measurement ongoing rather than a single sweep. This may, however, also be done in the front screen using the continuous button:
When continuous is ticked, the stimulus and recording will continue until you press the STOP button.
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3) Test Settings :
Battery simulator: Select the correct battery type for the hearing aid to be used under the test.
In general Zinc-air types will give best results, particularly on power hearing aids, as this battery type is best at providing current. If a Zinc-air battery type is selected, then an estimated battery lifetime is calculated as part of the Battery Current Drain test. If Standard battery is selected, a traditional high quality zinc-air battery is simulated. Additional battery types may be custom designed with specific characteristics by the HIT440. This can provide interesting information on how a particular hearing aid performs with a good battery and with a poor battery.
If “Not Used” is selected no power is supplied by the battery simulator.
Color: Select a colour for the Right and Left curve.
Press each of the buttons to have the custom colour selection below. Choose the desired colour by clicking on it and press OK .
Note the option to Define Custom Colours to get a more extensive selection. When having found the exact colour, press Add to Custom Colors .
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3.8.2.12 Response/Gain/Input/Output Settings
Settings for Response/Gain/Input/Output are identical to the settings described above for Frequency
Response (or Gain Curve) and Input/Output respectively. Please refer to section 0 and 0.
Note: This screen contains two tabs: Response/gain and Input/output .
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3.8.2.13 Delay Settings
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1) Ensure that Delay is marked in the left hand side of the screen. The name of the test will then appear in the Name of selected test section. Note the option to write a new name for the test in this section (e.g. “Delay 70 dB input”).
2) Stimulus Selection:
Input Level: Set the input level using the slider.
3) Test Settings :
Battery simulator: Select the correct battery type for the hearing aid to be used under the test.
In general Zinc-air types will give best results, particularly on power hearing aids, as this battery type is best at providing current. If a Zinc-air battery type is selected, then an estimated battery lifetime is calculated as part of the Battery Current Drain test. If Standard battery is selected, a traditional high quality zinc-air battery is simulated. Additional battery types may be custom designed with specific characteristics by the HIT440. This can provide interesting information on how a particular hearing aid performs with a good battery and with a poor battery.
If “Not Used” is selected no power is supplied by the battery simulator.
Color: Select a colour for the Right and Left curve.
Press each of the buttons to have the custom colour selection below. Choose the desired colour by clicking on it and press OK .
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Note the option to Define Custom Colours to get a more extensive selection. When having found the exact colour, press Add to Custom Colors .
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3.8.2.14 Pause Settings
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1) Ensure that Pause is marked in the left hand side of the screen. The name of the test will then appear in the Name of selected test section. Note the option to write a new name for the test in this section (e.g. “Check Volume Control Setting”).
2) Image :
Insert: Press the Insert button to browse for the desired picture to be used to the instruction or reminder which will appear during the pause.
Remove: Press the Remove button to delete a selected picture.
3) Text:
Enter an instruction or reminder text which is to appear during the pause.
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3.8.3 Combined Screen Setup
HIT440 can be setup for default curve comparisons. This is done in the Setup combined screen menu.
1) To enter the Setup combined screen menu, select your test protocol in the Selected protocol dropdown list in the main setup.
2) Click on the Setup combined screen button.
This will prompt the combined screen setup below:
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3) To create a default curve comparison view, click on Add new screen . A tab will then appear in the upper part of the screen.
4) Use the arrows to move the measurements to be compared (listed to left) to the new screen. If preferred you can add several new comparison screens.
5) When finished click OK to return to the main setup.
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Note: Before closing the setup remember to tick the Display combined screen check box for the combined screen settings to be active.
When a combined screen view is setup you can click on the Toggle between single and combined screen button in the front screen to view the desired curves together:
If no combined screen view is setup measured curves.
3.8.4 Print Layout Settings
Toggle between single and combined screen will show all
The HIT440 module allows for setting up individual print layouts. This is done in the Print Wizard which is
entered using the Print Wizard button (read about the Print Wizard in section 4.1).
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3.8.5 Finishing the Test Protocol
Press OK in the lower right hand corner of the HIT440 setup screen to save the customized test protocol.
The test protocol can then be found in the List of Protocols dropdown list on the front screen.
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3.8.6 Changing a Test Protocol Permanently
You can at any time make changes to an individual test protocol by entering the HIT440 setup again as when creating the test ( Menu/Setup/HIT440 setup ).
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1) Choose your test protocol in the Selected protocol dropdown list.
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Browse the setup options as if creating a test protocol (see section 0) and amend as desired.
3) When finished click OK to save the changes.
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3.8.7 Changing a Test Protocol Temporarily
You may from time to time run into a client with special needs requiring advanced or different testing parameters. In this situation the Temporary Setup can be helpful. The setup changes made here will be specific to the particular session. The test protocol name will be supplemented with an asterisk (*) to indicate that changes have been made to original test protocol. After saving, the protocol will change back to the default selected protocol making you ready for your next client.
1) Enter the Temporary Setup by clicking the button in the front screen (or alternatively select
Menu/Setup/Temporary setup ).
3.8.7.1 Importing and Exporting Test Protocols
The HIT440 also allows you to import and export test protocols to other HIT440 users.
3.8.7.2 Importing a Test Protocol
1) Go to HIT440 Setup ( Menu/Setup/HIT440 setup )
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2) Click Import and browse to the location on the PC or USB where the test protocol file has been saved.
3) Click Open .
4) The test protocol will then appear under Selected Protocol .
5) After saving it by clicking OK the test protocol can be selected in the List of Protocols on the front screen.
Affinity 2.0
Additional Information
3.8.7.3 Exporting a Test Protocol
1) Go to HIT440 setup ( Menu/Setup/HIT440 setup )
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2) Click on Export .
3) Select if the file is to be saved as “Read Only”. In this case the test protocol file is locked and the clinician receiving it will not be able to make changes to it.
4) Browse for the location on the PC or USB where the test protocol is to be placed.
5) Click Save . Other HIT440 users will then be able to upload the test protocol using the Import function.
Note: Some available tests are Read Only tests. This means that they can be imported and used, but the parameters cannot be permanently changed. This is to ensure that specialized tests created by e.g. Hearing
Aid Manufacturers for special application purposes are used as intended for greatly improved test control.
An imported Read Only test protocol will have all its setup points dimmed, as no change of parameters is allowed in such a test.
Even though Read Only tests cannot be permanently modified at all, you can create another test with another name based on the Read Only test. You can just select the read only test in Selected Protocol before selecting New . Then all characteristics of the Read Only test will present for your new test. In this new test you can modify all parameters – including the Print Wizard.
