Customizing A Test Protocol; Changing The Levels; Setting The Averaging Time - Interacoustics OtoRead Instructions For Use Manual

OtoRead™ Instructions for Use - US

3.11.5.2 Customizing a test protocol

To enter the DPOAE Menu:
1. Press CHANGE at the main menu.
2. Using the CHANGE buttons, select the DPOAE protocol you want to customize (the 'DP 4s'
protocol is not customizable).
3. Press SETUP at the Protocol menu.
4. At the Clock menu the teal arrow indicates that a custom protocol menu is available. Hold down
CHANGE key for 3 seconds until the 'READY' light (green LED) turns off.
5. At the New BT Device menu the teal arrow indicates that a custom protocol menu is available. Hold
down the CHANGE key for 3 seconds until the 'READY' light (green LED) turns off.
You will now see the Level L1 screen. You are in the DPOAE menu and will be able to scroll through the
available protocol parameters with the
arrow keys to change the selection.
If you push the DOWN arrow key without holding it for 3 seconds, you will scroll through date and time,
etc., rather than accessing the custom protocol menus.

3.11.5.3 Changing the levels

3.11.5.4 Setting the averaging time

NEXT button and make changes by using the LEFT or RIGHT
Selecting the Level of Primary Tones. The intensity of the primary
tones (L1, L2) may be changed to any level between 40 dB SPL and
70 dB SPL. The level L1 will change in 1 dB increments by pushing
the LEFT or RIGHT arrow keys and pressing
the L2 screen.
Press the NEXT key to set the level of L2 as with L1 above.
The Averaging Time can be changed to one of four settings. The
Averaging Time will have a large impact on the time required to
perform the test and on the signal-to-noise ratio (SNR). A 2 second
average for 6 frequencies would produce a test in about 18 seconds,
which includes the Probe Check sequence. The possible settings for
the Averaging Time are as follows:
0.5 sec., 1.0 sec., 2.0 sec., or 4.0 sec.
Press the CHANGE key to select an option and the
exit.
Longer averaging times help to reduce the noise floor which can
improve the likelihood of obtaining a pass result, particularly with a
noisy patient (eg a baby sucking a pacifier) or in a noisy environment.
However, shorter averaging times may be preferred for young children
and/or uncooperative patients.
Page 36
NEXT to move to
NEXT key to