GE HEALTHCARE
DIRECTION 5394227, 12 LOGIQ S8/LOGIQ E8 SERVICE MANUAL
6 - 14 Section 6-3 - Volume Navigation Calibration Procedure
6-3-6Perform Calibration (cont’d)
9.) Select the Calibration Next Point button. A note on the status bar appears indicating that the Point
2 has been added.
10.)Repeat steps 5 through 8 for a point of interest that is away from the first point of interest.
11.)At this stage, you have completed at least 3 views of the second point of interest.
12.)Select the Calibration Next Point button. A note on the status bar appears indicating that Point 2
has been added. Repeat steps 5 through 8.
13.)Repeat steps 5 through 8 for a point of interest that is away from the first and second points interest
and does not create straight lines between points 1, 2 and 3.
14.)At this stage, you have completed at least 3 views of the third point of interest.
15.)Optionally, you may identify additional points of interest by selecting the Calibration Next Point
button and repeating step 5 through 8.
16.)Select the Calibration Calculate button on the touch panel. A series of calculations are performed
in 5 steps. Once the fifth step is complete a value appears on the status bar. This message appears
briefly, so watch for it. If you miss this message, press Calibration Calculate again to redo the
computations and re-display the result. Record your results.
Init. Mean Dev. = ______________, Opt. Mean Dev. = __________________
The lower the value, the more likely the calibration correction is good.
17.)At this point, the calibration correction is being used but it has not been saved for later use.
Following the steps in the Measure Initial Accuracy section to evaluate the performance of the
calibration correction.
18.)If the correction is better than the Initial Accuracy, it may be saved with the Calibration Write key.
The key automatically stores the value with other system presets. If the accuracy is not better than
the initial accuracy, exit and reenter V Nav to discard the results. Another calibration correction can
be attempted by starting at step 3.
Problem 1 – Calibration Next Point button is not on the touch panel. Connect a service key, exit V Nav,
enter V Nav and go to page 2 of the touch panel.
Problem 2 – If you are confused about the number of points and views you have performed, restart the
process starting with Step 3.
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