METER ZL6 - Sensor Measurement Interval; Test Button

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SYSTEM
3.2.2 SENSOR MEASUREMENT INTERVAL
The measurement interval controls how often the ZL6 records sensor data to internal
nonvolatile data storage. The interval applies to all ports on the ZL6 (i.e., the ZL6 cannot
store data for one sensor at a faster rate than another sensor). This setting is controlled in
the Sensor Configuration tab of the Manage Settings dialog (Section4.2.5.1).
The measurement interval works relative to the ZL6 internal real-time, 24-h clock. For
example, a measurement interval of 60 min results in the ZL6 storing data every hour, on the
hour (e.g., 12:00 am, 1:00 am, ..., 10:00 pm). The ZL6 and ZL6 Pro minimum measurement
interval is 5 min and the maximum measurement interval is 12 h. For most applications,
a measurement interval of 60 min is appropriate. The ZL6 Basic measurement interval is
60 min.
The ZL6 makes a measurement from each of the sensor ports in use every 60 s. When the
ZL6 internal clock reaches the user-configured measurement interval, the ZL6 processes
and stores the results from all the 60-s sensor readings taken since the last storage interval.
For most sensors, the stored results are a simple average of the per-minute readings. For
example, if the measurement interval for a TEROS 12 soil moisture sensor is 60 min, the
ZL6 stores an average of the past 60 sensor readings. For a pulse-based sensor, such as
a rain gauge, the ZL6 stores summed sensor readings. Some METER sensor user manuals
contain more details of how the ZL6 processes sensor readings.
NOTE: Setting the ZL6 measurement interval to Off (not logging) turns off sensor measurement, data storage, and
data uploads.
3.2.3 TEST BUTTON
Pressing the TEST button initiates the self-test sequence. The self-test can take 60 s or more
if testing communications over the cellular network. The following actions are part of the
self-test sequence:
• Reboot the ZL6.
This ensures internal software restarts and operates in the expected way. Both status
lights stay on during the reboot. This reboot will not erase data or reset settings.
• Perform basic functionality testing on internal systems and evaluates the amount of charge
in the battery.
Both the green and red lights blink together slowly while the logger performs tests.
• Autodetect the connected sensors (Section3.2.1).
• Start the embedded GPS receiver to obtain a current time and location fix (Section3.2.6).
This process takes as long as 15 min to complete.
• Establish an internet connection over the cellular network and attempt to communicate
with ZENTRA Cloud.
• Enable the Bluetooth module to allow connection with ZENTRA Utility Mobile.