AEM 30-4900 Wideband Failsafe Gauge - Manual (Page 12)

Page 13
Data Logger
The Wideband Failsafe has an internal logger that can store approximately 2.5 hours of data. The
system maintains two levels of data logs. First, all AFR data points are stored and downloadable for
viewing on the AFR vs. Pressure Graph in the Wideband Failsafe Configuration tab. Second, all inputs,
outputs, and alarm triggers are logged in special log file format for viewing with the AEMdata software
that comes as part of the Wideband Failsafe download package. Once the logger memory has filled up,
the logger will begin to loop log and the oldest data will be discarded as new data is collected (data points
that were collected will slowly start disappearing). The following is a basic guideline on how to use the
internal data logger. NOTE: The internal data logger is always running when 12V is present.
1. Connect USB cable to PC.
2. In the Wideband Failsafe Configuration tab under Logger, click Download Log. All logged
AFR data points will now be displayed in the AFR vs. Pressure Graph.
3. To download the log to the PC, click YES when prompted to save data to disc and then save
log in desired location.
4. Click YES when prompted to open file in AEMdata.
5. The saved data log will now open as shown below.