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If using a Y-bar with drum, make sure that the power supply is SWITCHED OFF (power off).
The bars situated on the perpendicular sides are connected using a variable-length cable (eg.
$CAB155, 1.5m long); this allows to distance the actual measurement area (the rectangle formed
by the regular bars and highlighted in gray in the following picture) of the Y bars; this area allows
the patient to leave the test area without having to jump over the bars or, more frequently, turn
around by 180° and go back. In fact, the software allows to carry out an undefined number of
back/forth courses recording a sufficient number of steps also in case of linear systems of only a few
meters.