Understanding The Teoae Printout; Rounding Results; Special Characters; Usb Connection From Device - Interacoustics OtoRead Instructions For Use Manual

3.15.2

Understanding the TEOAE printout

The following information is provided for each test:
The time and date of the test, based on the setting of the internal clock
•
The test number (if operating in "Save 250" mode)
•
The protocol selected (e.g., TE 64s)
•
• The averaging time for the test (e.g., 64 sec avg.)
• Instrument and Probe serial number (SN)
The software version number (e.g., v106.00)
•
• The ear tested (Right or Left)
A PASS/REFER indication if there is a criterion set for the selected protocol
•
The center frequency band (F)
•
The noise floor (NF) in dB SPL
•
The emission level (TE) in dB SPL
•
• The signal-to-noise ratio (SNR) – TE level minus the noise floor in dB
A "P" to the right of the SNR if pass criteria were met for that frequency
•
• The Value or SNR graph as selected on the device
"MIN*" if the Minimum Amplitude setting was enabled
•
3.15.3

Rounding results

The user needs to be aware that the SNR and single PASS criteria are calculated from the full internal
precision of the instrument, and not from the values shown on the printout for the emission (TE) and noise
floor (NF) estimates.
This approach is used to preserve the full precision of the test results, but can result in some apparent errors
in the printout due to the effects of rounding.
Example: We assume the actual values at 1.5 kHz were TE = 4.5 dB, NF = -0.4 dB, which results in SNR =
4.9 dB. The printout values are rounded up to the nearest integer and are shown as TE = 5, NF = 0, and
SNR = 5. This can result in what appears to be an error with regard to the pass criterion.
Note: If the pass criterion is 5 dB while the actual SNR = 4.9, the printed value will be 5, but a P will NOT be
printed.
Again, the pass/refer criterion is based on the full precision of the results, and not the rounded values that
are printed. The full precision value for the SNR must be equal to or greater than the pass criterion (5 dB in
this example) for the P to be printed. A similar apparent problem can occur where the printed SNR value
appears to be incorrect. If the actual values were TE = 4.5 dB, NF = 0.4 dB, resulting in SNR = 4.1 dB, the
printed values would be TE = 5 dB, NF = 0, SNR = 4. The printed SN value of 4 dB appears to be an error,
but is in fact correct.
3.15.4

Special characters

The device and optional printer support the printing of special language characters for all included
languages.
3.16 Connecting to the OtoRead
Connection to the OtoRead
USB-A cable or wirelessly.
3.16.1

USB connection from device

Plug the USB-A connector into an available USB port on the computer and the Micro-USB connector into the
port found on the base of the OtoRead
D-0116684-B – 2020/03
OtoRead™ - Instructions for Use - US
TM Module
Module or Auto Print software is achieved by using the provided Micro-USB to
TM
.
TM
Page 37