Otto Bock 8E38 9 Instructions For Use Manual page 25

9.2 Control mode 2:
The MyoHand VariPlus Speed closes at constant speed, and the grip force increases propor-
tionally to the duration of gripping. The closing speed and the speed of grip force build-up can
be adjusted with adjustment regulator B.
9.2.1 Control with 2 electrodes
Proportionally controlled by the OPENING electrode.
Opening:
At constant speed by muscle signal of any level above the ON-threshold to the
Closing:
CLOSING electrode.
Control
mode 2
AutoControl Sustained electrode signal
LowInput
Reduced range of propor-
tionality:
Maximum speed once the
LOW-threshold has been
reached
Speed: proportional
Adjustment regulator A
Display of the MyoSelect (757T13)
8E38=9, 8E39=9, 8E41=9
AutoControl - LowInput
Control with 2 electrodes,
1 electrode and 1 switch or
1 switch
OPEN
Sustained electrode signal
Grip force:
Time proportional
After gripping once with
maximum force, the EMG
signal required to OPEN
the Hand will be set to a
higher value. Opening the
MyoHand VariPlus Speed
with unwanted electrode
signals is prevented.
Speed: constant
Adjustment regulator B
Adjustment regulator A is used to adjust the proportional speed
of the "OPENING" function.
Adjustment regulator B is used to adjust the digital speed of
the "CLOSING" function and the speed of grip force build-up.
Notice: Always check the adjustments on the prosthesis and
adapt them to the amputee.
CLOSE Indication
For amputees with
two weak elec-
trode signals
Ottobock | 25