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Note that the force of gravity is 1 g. So, when configured for 2 g, the MicroSensor will easily be triggered by normal handling. For example, lifting it at a rate that causes an additional 1 g of acceleration on the Z axis will trigger the sensor. Along these lines, it is important to handle the sensor with care when reading the last session’s maximum values or
they could be lost and replaced.
To change the G-Force trigger value, connect the Standalone Cable as described above, but don’t power the G-Sensor. Then, connect a small piece of wire between the unconnected pins of the Standalone Cable’s 4 pin connector, corresponding to the brown and yellow dots on the label, as shown in Figure 2. This creates a jumper between the brown and yellow labeled pins.
Then, power the G-Sensor via the Standalone Cable. Upon power up, the LED will display the previous G-Force trigger value, and then flash the new value five times before beginning to display the last session’s max G-Force values. Each time the power is applied with the jumper connected, the trigger value will increase by one, until reaching 5 g, at which time the trigger G-Force will return to 2 g. To change the trigger value, just repeatedly disconnect and reconnect power, until the desired trigger value is flashed 5 times.
Using the G-Sensor with your eLogger V4 or V3
Windows Software and Firmware Update
To use the G-Sensor with your eLogger, you must update your software to Eagle Tree Windows Software version 9.45 or later. To update, download the latest software from the support page of our website, located at http://eagletreesystems.com/Support/apps.htm . After downloading and installing the software, if you have not already done so, set up the Recorder software as described in your eLogger instruction manual. Then the firmware of your eLogger will need to be updated. To upgrade your firmware, just click “Hardware, Firmware Control” and click the Update button for t he eLogger.
Connecting the G-Sensor to the eLogger V4/V3
The G-Sensor plugs into the “LCD/OSD” or “LCD/TX” p ort of your eLogger V4 or V3, as shown in Figure 3. If you have a PowerPanel or other MicroSensors, those can “daisy chain” conn ect to the pins on the side of your G-Sensor, with the polarity as indicated on the G- Sensor label. NOTE: The Standalone Cable must not be used when the G-Sensor is connected to the eLogger!
Configuring the G-Sensor with the Windows Software
Choose one or more of the G-Sensor options below:
Logging G-Force
To log G-Force, just click “Hardware -> Choose Para meters to
Log in the Recorder” and check the “3 Axis G-Force X, Y and
Z” box.
Displaying G-Force in the Windows Software
To display the G-Sensor Gauge and/or Numeric G-Force
readings, click “Software, Choose Instruments to Di splay on the PC Screen” and check one or more of th e following:
*G-Force X Axis Meter, G-Force Y Axis Meter, and/or G-Force Z Axis Meter
*G-Force X Axis Numeric, G-Force Y Axis Numeric, and/or G-Force Z Axis Numeric
Then, after downloading data from your eLogger and clicking the “Play” button in the software, or run ning the eLogger in USB Live Mode, the gauges and/or numeric displays will show the values corresponding to the G-Sensor readings.
Graphing G-Force
To graph G-Force, after downloading data from your eLogger, click “Data/2D Chart” and select G-Force X, G-Force Y and/or G-Force Z for graphing. Also note that live G-Sensor readings can be displayed on the graph, by clicking the “Live Mode” button on the chart.
Displaying G-Force on the PowerPanel LCD
Select “Hardware, Configure PowerPanel Display”, an d choose G-Force X Axis, G-Force Y Axis, G-Force Z Axis for PowerPanel display.
Using the MicroSensor with your own Firmware/Microcontroller
Please see this document for information on using the MicroSensor with your own firmware:
http://www.eagletreesystems.com/support/manuals/microsensor-i2c.pdf
Copyright © 2011 Eagle Tree Systems, LLC
http://www.eagletreesystems.com
