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Sera™ Automated ABR

Prepare the equipment

  1. Turn on SeraTM by pressing the home/power button
  2. Select a new or existing patient on the device or use the Quick Test option.
  3. Select the ABR test protocol from the list.
  4. Select the ear for testing
  5. Pressing the Test button  starts the test.

Test environment
The ideal test environment is a quiet room where lights and other electronic equipment are turned off.

Prepare the baby

Patient state

The baby should be sleeping or in a quiet and relaxed state. Sucking, blinking, crying or movement may affect testing.

Skin preparation

If the baby’s skin is oily or covered in vernix, the electrode placement sites should be cleaned prior to placing the electrodes.
Use a conductive gel with the electrodes to improve impedances.

Place electrodes

Place surface electrodes using the specified test montage for the selected protocol (mastoid or nape).

Connect cables

Connect the cables from the preamplifier to the respective surface electrodes.

Place transducer
Place the probe or inset earphones in the baby’s ear/s or place the EarCups around the baby’s ears.

Run test
Press the Test button 

Impedance check 
An impedance check will begin. Impedances are indicated by the green/amber dots on the montage picture as well as in numerical format on the screen.

When a dot is amber, it means the impedance is poor (> 40kΩ) for the indicated electrode. Check that the surface electrode and cables are connected correctly. It may be necessary to re-clean the skin or use a conductive gel with the surface electrodes to achieve an acceptable impedance. Testing cannot begin until impedance indictors are green (< 40kΩ).


PASS result   REFER result  


When the pass criteria for the test is reached, a  is displayed in green above the measurement, indicating the test has PASSED.  

When the pass criteria for the test is not reached within the measurement time,  is displayed in amber above the measurement, indicating the test is a REFER.

  If the test is stopped before a PASS or REFER is generated by the system,  is displayed above the measurement indicating that the test is INCOMPLETE.
July 2017
Want to know more about our products or arrange a demonstration? Contact an Interacoustics sales office, call +45-6371-3555, or find a distributor.
Features and/or functions may not be available for all countries or all areas and product specifications are subject to change without prior notification.
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