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5.3.3
Wireless modem
The MRL-7 is equipped with a wireless UMTS-modem that uses the 2G and 3G services. This allows
remote connection with the data logger via IP-call, HTTP/FTP data transfer, e-mail and SMS-messages
as well as time synchronization via NTP.
5.4
Data storage options
5.4.1
Internal data storage
Acquired measurement data are stored in a flash memory of 4 MB, which corresponds to approx.
500'000 values. Optionally, a MicroSD card with up to 32 GB memory can be inserted into the provided
card slot. If a MicroSD card is present, data are automatically written to it once a month.
Once the internal flash memory is full, the oldest data are overwritten. No further data are written to
a full MicroSD card.
5.4.2
USB flash drive
Data stored internally can be collected on a USB flash drive. After connection to the data logger and a
keyboard command all data since the last collection are transferred to the USB flash drive. See Section
5.4.3
Remote data storage
The acquired data stored in the data logger can be transmitted to a HTTP or FTP server. A maximum of
three servers with three different transmission intervals can be configured. At the end of each interval
all data and/or camera images since the last successful transmission are sent. See Section
detailed instructions.
