AmpliVox 270+ User Manual

30
D-0126050 rev 1 - 270+ Operating Manual
4.8.5. AUTOMATIC TESTING (PURE TONE AUDIOMETRY)
Automatic masking can be activated by pressing the SIGNAL button. The option is given to test only one
frequency on the current selected ear, all frequencies on the current selected ear or to run a full audiogram on
both ears. The measurement procedure will be identical for any of the three methods as well as for AC and
BC.
The test sequence will start at 30 dB and increase the level stepwise always by 5dB. When the patient
response switch is pressed, the level is decreased by -10dB. While the auto test is ongoing, the PRESENT
LED is illuminated.
Based on the test settings, the system automatically stores a threshold if the responses made to 2 out of 3 or
3 out of 5 signals are at the same hearing level. The first tone presented is never considered part a response.
A valid response consists of 'no response at a level, followed by a response at the next level'. This means that
first, the level where the patient cannot hear a tone will be detected before the 2 out of 3 (or 3 out of 5) method
applies. It is also required, that the 2 (or 3) equal responses are made in one attempt and no inconsistent
answer is given in between.
To pause an automatic test, select F4. From here, the test can be continued (F3), the current tested frequency
can be skipped or the sequence can be stopped (F4).
On-screen, a message will show to inform about the status of the test sequence.
MESSAGE
INTERPRETATION
Auto test Running
Indicates the first round of testing. After 100dB has been reached
and no response or inconsistent responses were given by the
patient, the on-screen instruction will show RETRY.
Retry
Retry indicates, that the test is still ongoing but is in a retesting
phase. When the patient doesn’t respond to 100dB, the test
sequence will restart at 30dB. This test will be repeated 3 times in
total before NO RESPONSE! is shown and the test stops.
Test Finished
Auto testing has successfully finished.
No Response!
The subject did not press the patient response switch during the
test phase.
Response Always!
The subject keeps on pressing the response switch at any
intensity and thereby gives incorrect information.
Pattern not found
The response pattern of the subject does not meet the criteria.
4.8.6. AUTOMATIC TESTING WITH MASKING (PURE TONE AUDIOMETRY)
Auto-masking needs to be activated in the AUTO SETTINGS in order to be functional for the automatic test
sequence. Select MENU and AUTO and activate the setting AUTO MASK.

AmpliVox 270+ Specifications

General

Brand	AmpliVox
Model	270+
Category	Measuring Instruments
Language	English