MTX-xG-JAVA-IoT Family
www.mtxm2m.com 2017/07 v1.2 Page 70/105
MTX M2M® by MATRIX ELECTRONICA S.L.U
4.13 Real Time Clock
The Cinterion GSM module attached to MTX-IoT modems contains a real time clock (RTC) to maintain
accurate timekeeping and to enable you to “time stamp” messages.
This RTC is supplied by a separate voltage regulator which is also active when the MTX-IoT is in power
down mode and the power supply VIN is available. An alarm function is provided that allows the MTX-
IoT to wake up in Airplane mode without logging onto the GSM/UMTS network.
The MTX-IoT modems also accommodate an independent super-cap inside to maintain the date and
time of the RTC when the power supply is disconnected. This super-cap will be charged when power
supply is present again.
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