Drew Technologies DASHDAQ-XL - Manual (Page 21)

21
DATA LOGGING
The DashDAQ can log and save all information represented on the gauges from the active screen. The information can be saved as a
Microsoft Excel *.csv, or Logworks *.dif file directly to an inserted SD memory card.
To begin data logging:
1. Select a gauge layout from which to capture information. Assign signals to the gauges to data log.
2. Tap on [Start Log]. The signals will be saved to the SD card with a timestamp. The signals will continue to be displayed on the
screen even as they are being saved to the card. Once a log has begun the gauge screen can not be changed.
3. To log signals you don’t wish to put into a gauge review the Global Data Logger (pg 16).
4. Tap [End Log] when finished logging session. The data is now saved to the memory card.
Gauge screen with Start Log button in lower-right corner
Note: The DashDAQ records a few seconds of data before the [Start Log] button has been pressed. Therefore, log files may contain a
negative timestamp. The amount of negative time varies by vehicle. The amount of negative time is dependant on the amount of data
being logged. Newer vehicles offer more data, faster so they will have shorter negative time with more data.
Each time a data logging session is started and ended, DashDAQ saves one file to the SD memory card in a directory called “log.” Each
saved file has a log prefix. The default prefix is “log”, and will be changed by a value of +1 as new logs are added. (ex log_001.csv)
To change the log prefix:
1. From the Main Menu, tap on [Data Logging].
2. Tap on [Log File Prefix]. This screen appears:
3. Type in the desired name of the log file prefix.
4. Tap [Save].
Entering the logfile prefix
Now all log files will be saved in numerical order with the prefix that was entered.