Owner's manual

Copyright © 2003-2007 Eagle Tree Systems, LLC
Page 10
Solution: The eLogger shuts down immediately if the power goes below around 5 volts for more than a few
milliseconds, and logs this occurrence when the power returns to above 5 volts. If your battery’s voltage frequently drops this low,
you may be underpowered, and may want to consider getting a bigger battery.
Issue: the Current or Voltage being logged by the eLogger appears incorrect.
Solutions:
• Make sure that the parameters you wish to log are checked under “Hardware, Choose Parameters to be logged in Recorder”
• If the current being logged by the eLogger appears to be incorrect, connect a battery pack to the eLogger, and connect the
eLogger to USB. Then, click “Calibration, Rezero Current Sensors” to rezero your sensor. Make sure that no ESC or other
load is connected to the eLogger during this step! Note that this calibration step is done at the factory before shipping, but it
may be possible for drift to occur after the eLogger has been in operation for some time.
• If the current readings appear to be inaccurate even after you have completed the “Calibration, Rezero Current Sensors” step
above, or if voltage readings appear to be slightly different than another meter you are accustomed to, it is easy to calibrate
the eLogger readings to your other meter’s readings if desired. This is done by choosing “Advanced, Calibrate Pack
Voltage and Amperage” and entering the values your meter reads, and the eLogger reads. If you don’t desire to change the
calibration on, say, voltage, but wish to change it for amperage, just leave the voltage fields as 0, and the calibration for
voltage will not change. The eLogger is factory calibrated using a highly accurate current and voltage measurement tool.
• If the eLogger appears to be reading highly inaccurate voltages or currents, the first thing to try is to clear all calibration.
This is done running the calibration tool as described above, but entering the same values for the problem measurement. For
example, if amperage is way off, enter the same value (say, 5.0) for both the eLogger amperage and the “my other meter”
amperage, which will clear all internal and user calibration.
Issue: the temperature appears to be logged incorrectly.
Solutions:
• Make sure that the parameters you wish to log are checked under “Hardware, Choose Parameters to be logged in Recorder”
Issue: Throttle Movements are not correct, or the throttle cannot be calibrated.
Solutions:
• Ensure you have connected the Y cable as shown in Figure 1.
• Complete the Throttle Calibration step as described above.
• Make sure you are logging throttle movements in the eLogger.
Issue: The eLogger shuts off or the LED flashes rapidly when used with the GPS Expander.
Solutions:
• The GPS Expander draws significant current from the eLogger. When the eLogger is powered by a higher voltage pack, such
as an 8s or larger pack, or a pack above 30 volts, the eLogger’s regulator may shut off after a short period when used with the
GPS. Please use our “Battery Backup Harness”, part number CAB-BAT-BACK, to provide supplemental power to the
eLogger, if you encounter this issue.
eLogger Specifications
Voltage Measurement: approx 5V to 70V
Voltage Resolution: approx 0.02V
Current Measurement: up to 100 Amps, (150 Amps with the MPRV3-LEADS-150)
Current Resolution: approx 0.02 Amps (0.035 Amps with the MPRV3-LEADS-150)
Current Draw: approx 30 mA with no sensors
Weight: Unit with Integrated Connectors: approx 0.7oz (20 grams), 100 amp unit with Wire Leads: 0.9 oz (25 grams)
Temperature: Dual inputs, 0 degrees F to 424 degrees F (three temperature inputs)
RPM range: approx 100 RPM to 50,000+ RPM
Units of Measure supported: English and Metric
Measurements: approx 2.25” x 1” x 0.5” (57mm x 28mm x 13mm) including sensor pins
Length of Wires with Wire Lead Version: approx 2.5” (65mm)
Record Time: Varies with sample rate, parameters being recorded, and “activeness” of the model. Anywhere from around 45
minutes to many hours is attainable depending on these settings.
Limited Warranty
Eagle Tree Systems, LLC, warrants the eLogger to be free from defects in materials and workmanship for a period of one (1) year
from the date of original purchase. This warranty is nontransferable. If your unit requires warranty service during this period, we
will replace or repair it at our option. Shipping cost to us is your responsibility.