the signal conductors is incorporated at or near the juncture and or a splice in the signal conductors to facilitate fabrication of the adapter the impedance discontinuities caused by such alternative constructions are accommodated by additional dimensional modifications of the signal conductors or the outer conducting shield to provide the appropriate impedance compensation fig4 a provides a more detailed view of the differential interface 9 to other differential duts the two differential signal conductors 29 are supported relative to the conducting shield 31 by a dielectric support structure 33 the two differential signal conductors 29 have been configured here such that one presents a female jack 37 for joining to a mating connector 39 s conductor the other conductor has a male plug 39 at the interface surface an alignment pin 18 and alignment hole 43 provide the capability to correctly align the conductors 29 to ease joining to a mating connector and to maintain the differential impedance through the interface 10 the alignment pin 18 serves two purposes in addition to ensuring correct alignment first the length of the alignment pin 18 is longer than the male plug 39 providing a level of protection to the latter second when two adapters are mated through each adapter 39 s differential interface 9 proper mating of each specific signal conductor is achieved if a male and male differential interface is employed rather than a hermaphroditic interface two alignment pins may be provided on the male and male interface with two alignment holes provided on the mated female and female interface between the conductors 29 within the differential interface 9 is an air space 45 this air space 45 allows for a particular type of calibration that uses a length of u201c unsupported u201d transmission line often referred.