Test and Measurement News

March 2006

Tech Tip: Running Multiple Instances of PicoLog

PicoLog, our data logging software, can collect data from a number of converters at once, but it always records data at the same rate from each converter, and starts sampling from each converter at the same time. In more complex applications, you can get around these limitations by running several copies (or ‘instances’) of PicoLog at the same time. You do this by creating a separate settings file for each instance, then loading each settings file into its own copy of PicoLog.

Here is an outline of the procedure.

  1. Attach to the PC the converter or set of converters that you want to use with the first instance of PicoLog.
  2. Start PicoLog, select New Settings from the File menu, then follow the sequence of dialogs to set up your converters.
  3. You must use real-time continuous mode, as other modes will not work with multiple converters or with multiple instances of PicoLog.
  4. Select Save as... from the File menu, then Settings files (*.pls) from the drop-down box, then Save.
  5. Disconnect the first converter and attach the next (or the next set), then repeat the steps above.
  6. Close PicoLog.

Once you have a settings file for each converter or set of converters, you will need to start PicoLog Recorder from the command line, as follows.

  1. From the Windows Start menu, select Run...
  2. Typec:\Program Files\Pico Technology\plw32.exe mysettings1.pls
  3. (where c:\Program Files\Pico Technology\ is your installation directory and mysettings1.pls is your first settings file).
  4. Repeat the two steps above for each of your settings files (for example, mysettings2.pls, etc).

You should now have a separate instance of PicoLog for each settings file. The maximum speed of data acquisition will depend on the number of converters in use and the number of instances of the program.

Lotus Elise II High Idle Speed and Cutting Out

Our Real-Life Diagnostics series of tutorials, written by Nick Hibberd of Hibtech Auto-Electrical Diagnostics, continues with another case history. This month, find out how Nick used a PicoScope Automotive Oscilloscope Kitand a fault-code scanner to diagnose a high-performance engine with unreliable idling.

All our articles are fully illustrated with waveforms, diagrams and photographs, and are available free of charge with no registration needed.

Read the latest automotive tutorials


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