AN ARRANGEMENT FOR SIGNAL TRANSMISSION BETWEEN A PLURALITY OF ELECTRICAL UNITS OF A DAISY CHAIN

An arrangement (100; 200; 300; 400; 500) for signal transmission between a plurality of electrical units (102a-f) of a daisy chain (104). The arrangement (100) comprises a plurality of electrical units (102a-f); one or more signal wires (106) for interconnecting the electrical units (102a-f) of the plurality of electrical units (102a-f) to form a daisy chain (104); and one or more interfaces (112a-e) for providing a signal connection between two electrical units (102a-f) of the plurality of electrical units (102a-f). The interface (112a-e) comprises one or more connectors (114). The connector (114) is connected to a signal wire (106) of the one or more signal wires (106). The interface (112a-e) is external to the electrical units (102a-f) of the plurality of electrical units (102a-f). The connector (114) is connectable to a device (982) configured to monitor signal transmission between two electrical units (102a-f) of the plurality of electrical units (102a-f).