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When you test the signal strength, you need to keep your mobile phone at
the exact spot where the antenna is to be mounted.
If you have a location with good signal strength, then the central axis of the
device antenna must be placed exactly where the antenna of the phone is
located. Do not deviate more than 20 mm from this location. The wavelength
of the GSM signal is so short that even a change in position of 80 mm can
change the signal strength significantly. This does not happen with a strong
signal. But with a weak signal, it is possible that the device will not be able to
register.
2.
If your mobile phone is not on the same network as the SIM card you want to
install in the device, then insert the SIM card into your mobile phone. This
requires that your mobile phone not be locked to the SIM card you normally
use.
Now test the signal strength as described in point 1.
Note:
Once you have completed testing, remember to shut down your phone in the
recommended manner before removing the SIM card. If you shut off the
power abruptly (by immediately removing the battery from the phone, for
example), the SIM card cannot unregister properly from the network. Some
networks then block the SIM card for several hours.
3.
Use the device.
The SIM card should not be secured with a PIN. Turn off this security feature
from a mobile phone. The SIM card must be able to register on the cellular
network without entry of a PIN. It is not possible to enter a PIN on the
device.
Make sure that the SIM card has been activated properly. Refer to the
instructions you received when you bought your SIM card.
Insert the SIM card temporarily and connect the antenna. Power the device
with voltage corresponding to the technical data.
When testing the signal strength, check whether the device is also registered
on the desired cellular network. If the SIM card is not activated, the signal
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