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troubleshooting
8
When there are unexpected outputs from Sense or difficulties using the
software, always power cycle the Sense device using the FlexCell power
button as a first step.
The points below offer some common trouble shooting tips if difficulties
continue:
SENSE DOES NOT VIBRATE WHEN TURNED ON
First, check that the battery is charged. Press the button on FlexCell to ensure
that there is charge remaining on the battery. If discharged, connect
the charger and test again after charging.
If the battery is charged, try connecting the Sense to the PC software or
phone app and use the Test button to activate the prosthesis movements. If
the prosthesis moves, Sense and the hand are receiving power. It is possible
that Sense is installed in a way that dampens the vibration. Please note
that the vibration may be easier to detect while wearing the prosthesis. Try
placing your hand into the socket to feel the vibration there.
If the hand does not move, Sense and the hand are not receiving power. It is
possible that the power cable was disconnected during installation. Please
check the cabling inside the prosthesis.
SENSE SYSTEM DOES NOT CONNECT TO THE
SENSE PC SOFTWARE OR PHONE APP
•
Make sure Bluetooth is enabled on the Microsoft Surface or phone
•
Ensure that Sense is paired to the Microsoft Surface.
•
For Phone: Go to Settings > Bluetooth (iOS) or > Connected
Devices (Android)
•
For PC: Go to Control Panel > Devices and Printers
•
Remove and re-pair the device within the above menu; click device and
Remove/Forget. Re-pair the device.
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•
Check that the prosthesis is on and charged
•
Restart Sense and the PC/phone
DEVICE CONFIGURATION IS ERASED
•
Fill in all items according to the prosthesis configuration on the device
configuration page.
NO EMG OUTPUT FROM ELECTRODE
•
Open the Sense software and connect to the Sense system.
•
Check that when you tap the electrode, you see a signal change on the
signal viewer.
•
Try increasing the gain and contract.
•
Electrode lift-off:
•
PC Software: If the signal is flat-lined or at maximum, try
decreasing the gain to 3 and check for electrode lift-off.
•
Phone App: Check for the
contact underneath each bar channel.
•
Electrode unplugged:
•
PC Software: If one of the circles on the left side of the signal
viewer is faded out, this indicates that the electrode is not
connected
•
Phone App: If the
icon appears, this indicates a channel is not
connected. Check that the electrodes are plugged in and that no
cables are damaged.
•
If an electrode cable is disconnected, close the software, turn off the
device using the FlexCell button, then reconnect the electrode cable to
the Sense controller. Turn the device back on, open the Sense GUI and
reconnect the device.
NOISY SIGNALS ON THE SIGNALS PAGE IN SENSE
GUI
Make sure that you are not stepping on charging or power cords, or
•
that the arm is not lying next to power cords. Power lines can create
some signal interference especially when the electrodes are in air and
not contacting skin.
symbol indicating no electrode
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