Abstract: An exemplary field device connection unit includes a base plate on which a plurality of connection elements for connection of connecting lines with field devices and a plurality of module slots for receiving in each case one plug-in unit of different plug-in unit types. To avoid erroneous configurations, an identical type coding is assigned to the plug-in units of the same plug-in unit type, which identical type coding is formed by a plurality of wedge-shaped code elements which are anchored rigidly in the plug-in unit, and a plurality of wedge-shaped code elements are assigned to each module slot, which wedge-shaped code elements are mounted moveably about a rotary spindle between two opposite stops and whose wedge tips are oriented, in an initial rest position, centrally between the stops.

Abstract: An exemplary field device connection unit includes a base plate on which a plurality of connection elements for connection of connecting lines with field devices and a plurality of module slots for receiving in each case one plug-in unit of different plug-in unit types. To avoid erroneous configurations, an identical type coding is assigned to the plug-in units of the same plug-in unit type, which identical type coding is formed by a plurality of wedge-shaped code elements which are anchored rigidly in the plug-in unit, and a plurality of wedge-shaped code elements are assigned to each module slot, which wedge-shaped code elements are mounted moveably about a rotary spindle between two opposite stops and whose wedge tips are oriented, in an initial rest position, centrally between the stops.

Abstract: A device, comprising a storage means (51) for storing phase change values, and a phase offset adding means (50) for predistorting an input signal at an amplifier means is disclosed. A controller means (52) is connected to the storage means (52) and the phase offset adding means (50). Said controller means (52) is adapted to retrieve phase change values from the storage means (51), and output an offset signal to the phase offset adding means (50), which is adapted to add said offset signal to the input signal. The invention also discloses a method for predistorting an input signal at an amplifier means (30) by retrieving phase change values from a look-up table stored in the storage means (30) in response to an indication to change the gain level of the amplifier means (30).

Abstract: A device, comprising a storage means (51) for storing phase change values, and a phase offset adding means (50) for predistorting an input signal at an amplifier means is disclosed. A controller means (52) is connected to the storage means (52) and the phase offset adding means (50). Said controller means (52) is adapted to retrieve phase change values from the storage means (51), and output an offset signal to the phase offset adding means (50), which is adapted to add said offset signal to the input signal. The invention also discloses a method for predistorting an input signal at an amplifier means (30) by retrieving phase change values from a look-up table stored in the storage means (30) in response to an indication to change the gain level of the amplifier means (30).