HP 85027A/B/C Service
Gaging the APC-7 Connector: APC-7 connectors have 3 parts which determine the 2
critical diniensions in terms of mating surfaces. Figure 8-10 shows these parts and their
critical dimensions. The outer conductor may be recessed or protruding from the
extreme end of the connector coupling sleeve. That amount of recession or protrusion is
not critical because the important dimensions are relative to the plane of the outer
conductor itself. The center conductor is a very thin tube which holds the center collet.
The center conductor must recede from the plane of the outer conductor. The center
conductor is rigid and serves only to hold the center collet in place. It is the center
collet which must protrude to make contact. Note that the center collet is spring loaded
and thus can retract without damage when mated.
Refer to Figures 8-8, 8-9 and 8-10 to see how to read and zero the APC-7 gage and
how to use it to gage APC-7 connectors.
If the center collet is damaged, a.nd the other parts of the connector are neither
damaged nor excessively worn, you can replace the collet. Refer to Figure 8-1 1 for
instructions.
8-14
