Embodiments are provided that include a method including providing a first pulsed gate signal to a selected memory cell, wherein the pulsed gate signal alternates between a first voltage level and a second voltage level during a time period and sensing a data line response to determine data stored on the selected memory of cells. For each proposed interface port, a determination is made of a number of single points of failure for the proposed interface port in common with interface ports currently used to access the device. For this purpose, the control valve arrangement can be switched from a first operating state, in which the motor is driven in a single-acting manner, to a second operating state, in which the motor is driven in a double-acting manner. Circuitry is provided for stimulating the first electrical conductor with a predetermined frequency oscillator signal and for outputting a control signal that is responsive to the response of the first electrical conductor to the oscillator signal and an amount of moisture adjacent the first electrical conductor. Then, a mandrel in the lower punch is driven out of the annular body by means of a mandrel expulsor, which is pressed against the mandrel from above, and thereafter the annular body is from below pushed out of the die by mean of the lower punch.