At the bottom side of the mainboard PCB you will find a connector
(jumper) which has been placed from factory side as shown in the picture
[bottom and middle pin connected]. In this position the ground
connections (GND power supply/ outputs) are connected with the ground
of the electronics housing.
To avoid ground loops and related signal interferences in industrial
environments it might be necessary to interrupt this connection. To do this
put the jumper in the opposite position [middle and top pin connected].
If the thermocouple output is used the connection GND ā housing should
be interrupted generally.
On the left side of the mainboard PCB you will find a black switch which is connecting factory-default
the ground connections (GND power supply/ outputs) with the ground of the electronics housing.
To avoid ground loops and related signal interferences in industrial environments it might be
necessary to interrupt this connection. For this purpose, the switch must be changed.
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