Setting The Pass Snr Level; Setting The Number Of Frequencies For Pass; Reset Protocol - Interacoustics OtoRead Instructions For Use Manual

OtoRead™ Instructions for Use - US

3.11.5.5 Setting the PASS SNR level

3.11.5.6 Setting the number of frequencies for PASS

3.11.5.7 Reset protocol

I
n order to provide a PASS/REFER determination for each test, the
PASS SNR must be set. This number refers to the number of decibels
that the DPOAE signal must be above the noise to be considered a
PASS at that frequency. The limits for the PASS SNR are 3 dB to 10
dB.
Pressing the LEFT or RIGHT arrow keys will increase or decrease
the requirement. This requirement is used in combination with the
number of frequencies (discussed below) to determine an overall
PASS/REFER for each test.
Press the CHANGE keys to select an option and the
to exit.
The number of frequencies required for determining a PASS can be
set from 0 to 12. If the setting is on 0, then no assessment of
PASS/REFER will be made. This setting is used in conjunction with
the PASS SNR to set the criteria for the overall test PASS/REFER
indication. For example, if the PASS SNR is set to 5 dB and the
number of frequencies for PASS is set to 3, then the test must contain
at least 3 frequencies where the emission is at least 5 dB above the
noise to indicate a PASS.
The number of frequencies for PASS should also be based on the
number of frequencies being tested. Setting the number of
frequencies for PASS to 5 when only 4 frequencies are being tested
would result in every test being labeled as a REFER.
To disable the PASS/REFER assessment set the number of
frequencies for pass to 0.
Diagnostic protocols display the SNR graph with light-green bars.
Once the 'Number of Frequencies for PASS' is set above zero, green
bars are displayed to identify this setting.
Press the CHANGE key to select an option and the
exit.
Selecting the RESET arrow key in the Reset Protocol menu will
return the selected protocol settings to their original factory settings.
Press the NEXT key to exit.
This does not affect the instrument settings or the settings of any other
protocol.
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