Hi , If you are using a USB logger and you get ***** in the display then unplug the logger and replug it in. Also if you are using a laptop you may need to ground it properly to get accurate readings, be sure to ask an electrician for advice on where to connect to the ground.

Den.

When I click the PL icon into invokes pico player where as I want to use the recorder. It used to invoke the recorder.

I cannot switch from the player to the recorder, can anyone help?