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13
Temperature
Between -20°C à 35°C (For 6months
maximum)
45°C (For 1 month maximum)
Shock resistance
4600 g for a time of 0,5 ms
Magnetic field survivability
10 000 Gauss
Maximum rate of magnetic field tolerated before miss-
calibration
20 Gauss
MPOD transmits data to the CTRLER via radio signal. The transmitted signal is in
the Bluetooth band. MPOD is tested in CEM. However, the presence of other radio
transmitting devices can lead to interferences with MPOD™. Do not to use the
MPOD when other radio operating devices are running and are priority for
patients.
The device is mobile and portable. Its transporting conditions must respect the
intended protection means. Internal transportation does not require particular
precautions
IX.
CALIBRATION
When to calibrate?
Your MPOD has been calibrated during the manufacturing process. Calibration consists in adjusting
certain parameters for offset and sensitivity and to obtain standardized measurements. However,
over a long period of time, or after a magnetic shock, the sensors are likely to drift. It is then
necessary to calibrate.
In static mode, irregularities on accelerometer measures can be due to a very fast movement. The
software will probably request re-recording with a slower gesture. If magnetometers are
responsible for the anomaly, it’s more likely because there are magnetic disturbances in the
environment. In all other cases, it is necessary to calibrate.
It is recommended to calibrate MPOD manually before any procedure. Calibration lasts 30 seconds
and it is well guided by the provided MotionDevTool v2.0.4 Software. It mainly performs
measurements, and has menus to calibrate the MPOD according to the procedure described below.
How to calibrate?
Here’s the best way to calibrate the MPOD:
•
Be sure that the zone where the calibration is carried-out is free from any magnetic
disturbances (refer to section VII).
•
Take the sensor only in hand. We recommend putting your elbows on a wooden table and
maintaining the MPOD with your fingers
•
It is advised to be oriented facing north.
•
Rotate the MPOD with your fingers according to the 3 rotation axes (figure below):