Lord MicroStrain Sensing SG-Link-200, User Manual

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SG-Link®-200
User Manual
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4.3 Sampling Configuration
There are four user-set sampling options for the SG-Link-200, including Lost Beacon Timeout,
Diagnostic Info Interval, Storage Limit Mode, and Sensor Warmup Delay in the Wireless
Node Configuration > Sampling menu.
Figure 13 - Sampling Configuration Menu
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Lost Beacon Timeout - When the node is running in a synchronized network, it periodically
synchronizes its time clock to a beacon broadcasted from the WSDA gateway. The Lost
Beacon Timeout feature means that the node will automatically stop sampling and
transmitting data after the beacon has been lost for the configured amount of time. The
node will save power in this state without user intervention until the beacon returns. Within
two minutes of the beacon returning, the node will automatically begin sampling and
transmitting data again.
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Diagnostic Info Interval - At the defined transmit interval, the wireless sensor will report
diagnostic information. The node will continue to transmit this diagnostic information in all
operating modes, including Idle, Sleep, and Run modes. (
See Table 3- below ).
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Storage Limit Mode - The Storage Limit Mode applies when the node is datalogging to
internal flash. The two available options are: 1) Stop - when the node fills up its flash
memory, it will stop logging data. It is important to erase old data before starting new data
logging sessions, and 2) Overwrite - when the node fills up its flash memory, new data will
overwrite old data in a first-in, first-out method.
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Sensor Warmup Delay- Leave the sensor excitation on continuously or duty-cycle power
to the sensor in order to save power. When duty cycling power to the sensors, assure the
sensor signal can settle within the configured sensor warmup time. For periodic burst
sampling, the node will warmup the sensor for a minimum of 1 second before the sampling
burst, regardless of the configured warmup time.