Testing Noise Level On The Artificial Patient Lbk15 - Interacoustics Eclipse Additional Information

Eclipse Additional Information
2.4

Testing noise level on the artificial patient LBK15

This test is using the default included LBK test box. The red LBK15 stimuli 6.3mm plug is not connected to
the Eclipse stimuli socket.
The red 6.3mm plug is placed non-connected to anything on the table/patient bed.
The electrode cables are connected to the nipples on the LBK15 unit, see picture below.
This way we can simulate a sleeping deaf neonate.
1. If no ground is connected, you will see full rejection on the EEG display in the ABR module, check that
there is ground in the wall outlet as well the power cord.
2. Be careful to place the Eclipse too close EMI radiation sources, especially transformers.
3. Do not touch the system or patient bed as you can ground the chassis, and in this way lead to different
results. Often better recordings are seen, not reflecting the patient test scenario, where the operator can-
not touch the part during testing.
4. Optimally test with the LBK and Eclipse on same position as you would place the test subjects.
5. Check that electrode fall off is working as expected, full rejection is expected when one lead is discon-
nected (example of check of left electrode is shown below).
If one cable is broken, change firstly the cable/electrode with the highest impedance and recheck if more
need to be swapped.
6. Check that the impedances are around 3kOhm with the LBK switch in IMP setting.
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