Interacoustics Eclipse Instructions For Use Manual page 111

If this does not help, remove the electrode, repeat the skin preparation procedure and apply new electrodes
to the patient. Return to ERA mode by clicking once again on the IMP button on the Preamplifier.
Note:
The Ground electrode impedance is not very critical for obtaining good results. You may have an easier job,
if you place the ground electrode above the nose (below the vertex electrode), as this place is much easier
to rub down with the skin abrasive gel – easier than the cheek, which is softer.
Please note that even though the impedance checking system is designed to give a direct indication of
impedance of the individual electrodes, there is a little interdependence between electrodes when
impedance checking. This causes the Right electrode to show an impedance reading slightly higher than it
actually is, if the Ground electrode has high impedance.
D-0120578-C – 2019/11
Eclipse – Instructions for Use - US Page 103