Interacoustics Eclipse Additional Information page 40

Eclipse Additional Information Page 30
The corresponding ms and μV values will be displayed in the boxes next to the Waveform Markers.
Interlatency values will also be calculated after the relevant markers have been placed.
Manual Marking of Trough
To use the SN10 / trough markers, it must be selected in the General Setup. Tr buttons will appear for man-
ual positioning of the various troughs including trough V.
.
Signal to noise calculation 3:1
An alternative method to Fmp and residual noise can be used to determine whether a response is present or
not and what the recorded noise is. Place Wave V & Tr waveform markers on the recorded curve.
The Noise is calculated as the deviation between the A&B buffer for each curve in accordance to the Wave
repro line. So if the A&B buffers or wave repro line are moved from their original position a new noise value
is calculated. The Ratio is the Amplitude of Wave V top to SN10 (both markers must be placed manually.
The noise is automatically calculated based on the current Wave Repro line position. Normally this one is not
moved. If it is, a new noise levels for all curves are calculated each time the line is moved. See the below
picture for more guidance.