Auto-Calibration Adjustment (Figure 57) - Otto Bock E-MAG Active 17B202N Mounting And Service Instructions

4.1.5 Auto-calibration adjustment (figure 57)

The electronics always need to be calibrated prior to initial use on the patient. Once the settings
have been successfully established for the patient, the calibration process does not have to be
repeated. However, calibration may be repeated at any time if the patient's gait pattern changes.
Calibration process:
1. During initial use, the patient should stand between parallel bars in order to ensure safety at
all times.
2. Now the orthotist removes and reinserts the battery. Then he activates the calibration mode
by pushing and holding the auto-calibrate button (see Section 4.1) until a tone and light signal
are emitted.
3. The patient is asked to step ahead with the leg that is fitted with the orthosis (position similar
to heel strike). While the patient briefly remains in this position, the technician confirms the
position by pressing the upper button B (see Section 4.1). A brief audible tone combined with
a white light indicates confirmation.
4. The patient is then asked to simulate toe-off by positioning the leg behind the body's centre
of gravity. Once again, the position is confirmed by pressing the lower button C. An audible
tone and light signal follow.
5. Now the software reports that the joint is in calibration mode. Now the patient can walk in the
locked state until the software warns the patient – by means of a different audible tone – that
the joint is about to automatically unlock at the end of the stance phase in order to facilitate
an unobstructed swing-through. The system tries to find the optimal switching point.
6. The calibration process is complete when an audible tone (long low tone and then long high
tone) and light signal (green/white continuous light) indicates the knee joint system is ready.
These settings are then saved by the software. If the technician or patient is not satisfied with
the settings, steps 1-5 can be repeated as often as desired.
Calibration procedure
Press and hold the button for auto-
calibration mode (A) until the tone/
light signal is emitted.
E-MAG Active
Press and hold the upper button B until
the tone/light signal is emitted.
Press and hold the lower button C
until the tone/light signal is emitted.
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