Test box speaker overdriven, No test box reference mic. detected, Invalid test box calibration – Audioscan Verifit User Manual
Page 125: No on-ear ref. mic. detected
Verifit
®
User's Guide Version 3.12
May 2015
Test box speaker overdriven
Test box speaker overdriven! or Test box right/left speaker overdriven!
The first message indicates that the left test chamber speaker is unable to produce the SPL required for a test.
The second message will appear during the directional test if the right/left speaker is unable to produce the
required SPL. Check that the two cables running between the test chamber and the main unit are securely
connected.
•
Interchange the cables connecting the test chamber to the rear display unit.
No test box reference mic. detected
No test box reference mic. detected!
This message may be displayed when starting a hearing instrument test. It indicates that the Verifit is not
measuring any sound at the test box reference microphone. The test box reference microphone is the white
microphone located in the test chamber.
•
Ensure that the test box reference microphone is secure. Unplug the white test box reference microphone.
Plug the microphone back in again, ensuring that it ‘clicks’ into place. Try the calibration procedure again.
•
Interchange the cables connecting the test chamber to the rear display unit.
•
Check the two 15 pin connectors on the rear of the test chamber. Look carefully at the pins using an
otoscope to make sure they are all the same length and are not bent. If any have been pushed back into the
connector, you should contact Audioscan.
•
Unplug the test box reference microphone and plug the on-ear probe microphone in its place. Try test box
calibration using the reference microphone of the on-ear probe microphone in place of the test box
reference microphone. If this is successful, the test box reference microphone is defective and must be
replaced.
Invalid test box calibration
Invalid test box microphone calibration!
This message may be displayed during the test box calibration procedure. It indicates that the calibration curve
is significantly different from what is expected. It may be accompanied by a missing test box reference
microphone error.
•
Check that the there is no coupler on the coupler microphone and that the microphones are correctly
positioned for test box calibration.
•
Check that the coupler microphone is securely plugged into the correct socket.
•
Follow the suggestions in No test box reference mic. detected.
No on-ear ref. mic. detected
No (right or left) on-ear reference mic. detected.
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