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EM50
5. EM50G CELLULAR COMMUNICATION
The Em50G data logger has a GSM/GPRS cellular module that enables the logger to upload
sensor measurement data to METER Data Service. Your measurement data is available for
download directly to your Windows computer at any time, anywhere in the world where you
have Internet access. To extend your service plan contact Customer Support.
5.1 METER DATA SERVICE
The Em50G uses "push" technology to upload measurement and logger status data to
the METER Data Service at regular daily intervals. This type of push technology allows the
Em50G to keep its cellular hardware powered off for most of the time allowing long battery
life. The logger uses a unique cryptographic signature and checksum to protect the integrity
of the your data as it is transferred over the cellular network and Internet as it is uploaded to
the METER Data Service.
The Em50G keeps track of the data successfully uploaded to the METER Data Service. If your
logger is unable transfer data during one regularly scheduled session, the data is included in
the next upload session.
Once stored in the METER Data Service, you can download your measurement data from the
Internet. Downloading data does not remove it from the Data Service. Decagon safely stores
your data for download at any time.
5.2 CELLULAR SERVICE
METER partners with over 200 GSM/GPRS network operators in 120 countries to provide
cellular service all over the globe. We configured your Em50G with an appropriate SIM card
for the location where you plan to use your logger. The SIM card and associated service
METER provides is only for use with the Em50G as outlined by the usage agreement in
AppendixA.
NOTE: Please check with METER before moving an Em50G from one country to another to make sure your service plan
is appropriate for the new location. To extend your service plan or to troubleshoot your cellular service, please contact
METER or the authorized METER distributor where you purchased your Em50G.
5.3 CELLULAR COVERAGE
The Em50G requires GSM/GPRS cellular service to upload measurement data to METER Data
Service. In the USA, the Em50G with the 2G modem operates on the T-Mobile network and is
not compatible with the Verizon, AT&T, or Sprint networks. The Em50G with the 3G modem
operates on the T-Mobile and AT&T networks and is not compatible with the Verizon or Sprint
networks. Please contact METER for specific questions regarding 2G versus 3G modules in
the Em50G. Outside of the USA, the Em50G should be compatible with technology used by
most cellular carriers.
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