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4.10
GSM/GPRS/UMTS antenna connector
The antenna connector allows radio frequency (RF) transmission signals between the modem and an
external customer-supplied antenna. The modem is fitted with a 50Ω, FME male coaxial jack.
The external antenna must be matched properly to achieve the best performance regarding radiated
power, DC-power consumption, modulation accuracy and harmonic suppression.
4.11
SIM card reader
The MTX-IoT modem is fitted with a SIM card reader designed for 1.8V and 3V SIM cards. It is the flip-
up type which is lockable in the horizontal position and is accessed through a removable panel as
shown below.
The card holder is a five wire interface according to GSM 11.11. It has a SIM card detector switch to
detect whether or not the SIM card drawer is inserted.
Removing and inserting the SIM card during operation requires the software to be reinitialized.
Therefore, after reinserting the SIM card it is necessary to restart the MTX-3G-JAVA modem.
The full operation of the MTX-IoT relies on a SIM card being inserted. Some MTX-IoT functionality may
be lost if you try to operate the control modem without a SIM card.
www.mtxm2m.com
2017/07 v1.2
MTX M2M® by MATRIX ELECTRONICA S.L.U
MTX-xG-JAVA-IoT Family
/
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