from the moment the key is inserted until it is disconnected. To use this type of file in a Windows
environment, we recommend using a special utility program, such as 7Zip (www.7-zip.org).
4.1.8.2 Uso come dispositivo di scambio file
Using the USB stick, it is possible to upload the Alpha-Log configuration file or to download the data files from
the memory. These operations are accessible from the PEN DRIVE menu (§5.1.4.5.3).
On the inquiry to upload the files with the data processed on the stick (Upload data function), the data logger
creates the folder of the type export_YYYY-MM-DD hh.mm.ss in the path
<serial>/data (where <serial> is the serial or user number of the Alpha-Log - for more info §2.2.1)
containing the following files:
• config.json: the current configuration, available at the time of the export procedure
• HDR*.txt: zero or more header files, one for each processing time base created in the current
configuration
• data.tar.gz: compressed file containing all the files saved up to now inside the device, referring not
only to the actual configuration but also to old configurations (the file nomenclature specifies the
configuration that generated it)
4.1.9 Logics
Alpha-Log offers 3 implemented electric outputs to power external devices such as sensors and modem or
to activate alarm devices. It can also send mails, SMS and MQTT messages when certain conditions that are
defined in the actuation logics are verified.
Two types of logic can be defined: Threshold comparison and Timer.
4.1.9.1 Threshold comparison logic
The picture below shows one example of Threshold comparation logic.
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