| 摘要 |
When connecting external wiring to a circuit board, which is inserted in a housing arrangement, there is the conventional way a backpanel having connector elements for receiving corresponding connector elements on the circuits board. The external wiring is connected to contacts on an exchangeable and removable connector unit. The unit is inserted in the housing in a similar way as a circuit board but is not connected to the backpanel and comprises connector contacts for connection with corresponding connectors on the circuit board. When the circuit board is inserted into the housing thus electrical contact is obtained both with the contacts on the backpanel and with the contacts on the wiring connector unit. From the contacts on the connector unit leads extend to the various contact pins, which are located easily accessible from the front of the housing.
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