A wire-to-board connector for coupling electrically a circuit board to a transmission wire unit, includes a plug receptacle, a plurality of signal contacts and a mating header. Using the data input, the leakage current analyzing apparatus obtains a cumulative probability density for a leakage current value that is equal to or less than each arbitrary leakage current value I1 to IJ. The axis of these motors is indistinguishable from the axis around which the mobile part can go into rotation. The latching portion of the latch handle is releasably engaged with the latch seat, thereby preventing sliding movement of the first track member relative to the second track member.