HS2 and HS2P
The first time the HydroSense II unit is used with a new computer, the
computer and HydroSense II must be “paired” before a connection can be
made. The pairing code is “1234”. For more information, please refer to the
HydroSense II Support Software user guide.
While a Bluetooth connection is open, the HydroSense II will not shut down.
Turn off the HydroSense or disable the Bluetooth once data have been
collected or settings have been updated to avoid early depletion of the batteries.
8.5 Collecting Data
Before collecting data, establish a Bluetooth connection (
Section 8.4,
(p. 18)). Data are downloaded to the computer by
clicking the “Synchronise” button in HydroSense II Support Software. The
synchronization process downloads new water content data and updates the
zone table and configuration settings.
For more information, please refer to the HydroSense II Support Software user
guide.
9. GPS
The HydroSense II incorporates a receiver for the Global Positioning System
(GPS). To calculate position, the GPS module must receive radio time signals
from at least four satellites simultaneously. If the receiver detects signals from
more than four satellites, it will use the additional data to determine a more
accurate position.
9.1 GPS Synchronization
The GPS receiver needs a clear view of the sky to reliably calculate position.
When the receiver resolves the current position, it has achieved
“synchronization”.
The GPS antenna is located inside the display above the LCD. The antenna
faces toward the sky when the display is held upright in a comfortable reading
position.
To synchronize the GPS, take the HydroSense II outside, away from tall
buildings or large obstructions and turn it on. GPS synchronization will
normally be achieved in approximately 30 seconds, but may take up to a
minute or more. The HydroSense II indicates that synchronization has been
achieved by displaying the GPS sync icon (
(p. 14).
When the GPS is synchronized, the internal clock of the HydroSense II is
adjusted to match GPS time to within one millisecond. GPS can be disabled
(p. A-1).
9.2 Geotagging and Zones
When the GPS module is enabled, the HydroSense II is able to store water
content data tagged with position information (latitude and longitude).
Using this position information, data can be grouped by geographical location.
These geographical areas are referred to as “zones” and are characterized by a
center coordinate and radius. Volumetric water content values are grouped,
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