Dynamic DX-REMG91, Installation Manual

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GBK63648
:
Issue 3
– February 2012
54
6.5 Programmable Joystick Throw/Shape
The G91 features a Programmable Joystick Throw and Shape . These options can be
set by the dealer or therapist to reduce the amount of joystick movement required to
suit the physical abilities of specific users.
Reducing the Pressure or Movement to Operate a Joystick
The Short Throw Travel and Short Throw Shape parameters are used together to
create custom VRPs on a user by user basis. These are solely for making the joystick
more sensitive.
As supplied, the G91 will reach full speed only when the joystick is pushed as far as it
can mechanically go (i.e. when it hits the restrictor plate).
For some users, it may be difficult if not impossible to provide either the force or
deflection to move the joystick this far, in one or more directions. In these cases it
may be useful to use the
Short Throw Travel parameter to reduce the amount of
deflection (and therefore pressure) required.
However, as the Short Throw Travel is reduced, the shape of the overall restrictor plate
changes. This may have the negative effect of eliminating the turn/speed interlock
by producing a restrictor plate shape that allows full forward speed and full turn
which can be dangerous. Using the
Short Throw Shape parameter it is possible to
“knock the corners off” an undesirable VRP to help maintain chair stability.
Possible settings for a user with limited hand movement/strength could include:
Parameter Name Wizard 5 Section Potential Setting
Short Throw Travel Drive Profiles 150%
Short Throw Shape Drive Profiles 150%
Joystick Switch Threshold
(This is not used for driving but for control
of accessory functions e.g. actuator
control)
System Settings 30%
Note:
These settings are to be used as a guide only. It is the responsibility of
the wheelchair manufacturer to ensure the program is safe and
suitable for their particular chair configuration.