X-check (Cross Check) Calibration Verification

Daily Calibration Checks at the Click of a Button

Every audiologist, audiometrist or health care professional who performs hearing tests may be familiar with the good-old self-check as part of the daily routine. Whether you call it a biological or subjective test, we typically test ourselves or a colleague to see if it is still working as expected.

This nifty tool comes standard with your KUDUwave™ and makes daily calibration checks a breeze.

Biological Calibration

X-check verifies the calibration of your KUDUwave digitally. Like biological checks, X-check does not replace the need for regular calibrations as per the prevailing standards. It is,however, an accurate and objective test that is quicker and more accurate than your standard subjective biological calibration check.

Using X-check is really easy and will save you a ton of time and grey hair.


Here’s how to do it:


Step 1:

Launch your KUDUwave software and click on the X-check icon in the bottom left hand corner of your home screen.

The X-check start page will appear:

xcheck home screen


Step 2:

Follow the on-screen instructions to connect your sound tubes to the X-check ports and Click Start.

Step 3:

Your KUDUwave will now do all the work for you.

Sit back and watch the little bars sprint to the end. If all is well, X-check will take about 30 seconds to complete. Once complete, a message will indicate if your calibration verification has passed or not.


X-check calibration verification


Final Step:

Click Finish to exit X-check and carry on testing patients to your heart's content.

If your test fails, don’t worry, there are some simple checks you can do before trying again. These are covered a little further down this page.


Curious to know what happened?

No Problem, get a comprehensive technical report by clicking on the “Detail view” button to display the X-check report.


calibration check report


Technical details

The report shows all the tested frequencies as well as the Amplitude Error of each.

The Amplitude Error is the discrepancy or difference between the calibrated level of the KUDUwaves air conduction output and the actual air conduction output measured by X-check. Ideally all of the error values should be zero. In the real world these values will include both X-check measurement error and KUDUwave calibration error. X-check measurement error is affected by factors like ambient temperature and atmospheric pressure. X-check uses the following specifications for the pass criteria of the amplitude errors of the pure tones.

+/- 5.0 dB difference for frequencies between 125 Hz and 4 kHz

+/- 6.2 dB difference for frequencies between 4 kHz and 8 kHz

+/- 6.5 dB difference for frequencies between 8 kHZ and 16 kHz


Again, please note: These standards are not a replacement of the need for audiometer calibrations as per local standards.



print your report

To print your report scroll down and click the “print report” button.

This will generate and open a PDF, like the one shown here. Once the PDF is generated you can print it on your connected printer or save it. The PDF report is also automatically saved in the eMoyoDotNet/Pdf folder on your computer.


Failed X-check?

Don't Panic, your KUDUwave is most likely not out of calibration. If the X-check test fails, a message will display the most common causes of test failure. These can be something as simple as bumping or moving the KUDUwave while the X-check is running or blockage in the sound tube.

Troubleshoot by going through the checklist and then clicking the “Retest” button for the side that failed.

troubleshoot list


troubleshoot your calibration verification


For more technical information on a failed test view the X-check report. Failed frequencies are shown in red along with a reason of why the test failed.

calibration results


If the test still fails after you have followed the instructions then your KUDUwave™ could be out of calibration.
Contact us to make a calibration booking.

Do I have X-check in my KUDUwave?

X-check is a new feature that comes standard with all  KUDUwave™ Prime, KUDUwave™ Plus and KUDUwave™ Pro devices made after March 2018. The great thing about KUDUwave Audiometers is that they are all upgradable.

If your KUDUwave™ is not equipped with X-check A message will indicate that you should contact us to make arrangements.

Upgrades are simple and will also include the cost of a calibration.

digital calibration verficiation


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