Eagle Tree eLogger V2 - Manual (Page 6)

Copyright © 2003-2005 Eagle Tree Systems, LLC
Page 6
• Graphical and/or Numeric Pack Voltage – The application displays the current or max (when playback is stopped) pack
voltage readings in either gauge or numeric format.
• Graphical and/or Numeric Pack Current – The application displays the current or max pack amperage readings in either gauge or
numeric format.
• Pack Wattage – this gauge indicates the pack wattage during playback.
• Cumulative Amp-Hours – this numeric display indicates the cumulative AH used
• Graphical and/or Numeric Temperatures – The application can display up to two Temperature readings in either gauge or numeric
format.
• Graphical and/or Numeric RPM – The application displays RPM readings in either gauge or numeric format.
• Graphical and/or Numeric Speed(Cars Only) – The model’s speed, as computed from the RPM, can be displayed graphically and
numerically.
Multiple Session Support
Depending on the length of your modeling sessions, it is often possible to record multiple runs into the MicroPower without having to clear the buffer
or overwrite data. The MicroPower application will split multiple sessions automatically for you. By clicking the “Sessions” option in either the
playback or graphing pages of the app, you can display a separate session, or all sessions simultaneously. When graphing all sessions
simultaneously, vertical gray bars on the graph indicate where sessions start.
Note that a new session is created in the logger each time it is powered off and on.
Saving Micropower Log Files
After downloading session data, if you wish to save the data to play back later or to share with friends, save the file with the File->Save Recorder
File menu. Note that the file is saved with a .FDR extension by default.
USB Live Mode Bench Testing
When the MicroPower is installed in your power system, and is also connected to your PC via the USB cable, clicking the Live Mode button in the
app will cause the numeric displays and gauges to display data live. Live Mode sessions can be recorded on the PC. To set up Live Mode
recording, click “Tools, Set Live Mode Options.” If Live Mode recording is enabled, you will be prompted to save the recorded data when you
stop live mode by clicking “Stop.”
Also, note that real time strip charting is also supported in Live Mode. To see real time strip charts, first turn on Live Mode recording. Then, click
“Graph Data” to launch the graph. Configure the parameters you want to see on the chart, and then click the Live Mode button. Live data will be
graphed on the chart!
Graphing/Spreadsheet Compatibility
The MicroPower application has extensive graphing capability built in. Just click on “Graph Data!” on the toolbar to graph loaded data. Click on
the HELP button on the graphing page for more information on graphing.
Also, the MicroPower’s Data File is compatible with Excel ™ spreadsheet software, and perhaps other spreadsheet brands. Using Excel™ is useful
for graphing the data output from the MicroPower.
To load in Excel, save the data file from “File->Save Recorder File,” and in Excel™ choose File->Open, and select “All Files” in the “Files of Type”
box. Navigate the Excel dialog box to the location you saved the .FDR data file, and click on the filename. Excel should then bring up the “Text
Import Wizard”. Choose the “Delimited” option, and on the next page choose “Delimited with Spaces”. The data should then load correctly in
Excel.
The format of each line of data in the file is:
First Line: Model Name
Second Line: Data about your Model’s setup. This line is needed to allow sharing of your session log files with others.
Third line: header indicating what each of the data fields represents. These columns are:
PackVolt*100 Amps*100 Temp1*10 Temp2*10 RPM IsEvent EventError EventData Timestamp
If “IsEvent “is 1, the record contains event data as well as regular data. Typical events are power-up (restart), and servo glitches. Ignore the non-
event fields when IsEvent is set to 1.
Event Codes in the “EventCode” field are as follows (the first one is 0). Note that “internal” errors should be reported to Eagle Tree Systems:
ERROR_BATTERY_LOW – battery has fallen below a safe level for an extended period of time,
ERROR_RESTART – the MicroPower has been power cycled normally,
ERROR_LOW_BAT_RESTART – the MicroPower has been restarted due to a brownout,
Timestamp indicates when each record was collected. The timestamp is in milliseconds.
Email us if you need more information on the file format.