Connecting to probe - GMP231

GMP231 User Guide

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User guide

The following steps describe how to connect to the probe using the PuTTY terminal application for Windows (available for download at and a USB service cable:

  1. Connect the USB service cable between your computer and the M12 connector of the probe.
  2. Start the PuTTY application.
  3. Select Connection > Serial & USB and check that the correct COM port is selected in the Serial or USB line to connect to field.
    If you are using the PuTTY terminal application supplied by Vaisala, you can press the USB Finder button to open the Vaisala USB Instrument Finder program.
  4. Check that the other serial settings are correct for your connection, and change if necessary. Flow control should be set to None unless you have a reason to change it.
  5. Select Open to open the connection window and start using the serial line.
    If PuTTY is unable to open the serial port you selected, it shows you an error message instead. If this happens, restart PuTTY and check the settings.
  6. You may need to adjust the Local echo setting in the Terminal category to see what you are typing on the serial line. To access the configuration screen while a session is running, click the right mouse button over the session window, and select Change Settings from the pop-up menu.
    Figure 1. PuTTY terminal application