S9407-AB-HBK-010 Datasheet, PDF (94/276 Pages) Glenair, Inc. – HANDBOOK OF SHIPBOARD ELECTROMAGNETIC SHIELDING PRACTICES

S9407-AB-HBK-010, Rev. 2
RP2330 (Continued)
NOTES (Continued):
7. THIS RP2330 ADAPTER IS DESIGNED TO REPLACE THE GLAND NUT (A SIMPLE ONE-PIECE
THREADED COMPONENT) AT THE REAR OF A MIL-C-39012 CONNECTOR, IN ORDER TO PROVIDE A
MEANS FOR TERMINATING FLEXIBLE SHIELDING CONDUIT. HOWEVER, THE MIL-C-39012
SPECIFICATION DOES NOT PROVIDE CONFIGURATION CONTROL OVER MOST OF THE INTERNAL
COMPONENTS. AS A RESULT, (1) THE THREAD SIZES FOR THE REAR END OF COAXIAL
CONNECTORS MAY VARY AMONG MANUFACTURERS, AND (2) SEVERAL DIFFERENT INTERNAL
DESIGNS HAVE BEEN PRODUCED, SOME OF WHICH ARE NOT COMPATIBLE WITH THE EXISTING
RP2330 ADAPTER.
BECAUSE THERE IS NOT CONFIGURATION CONTROL, THE GOVERNMENT DESIGNATION (SUCH AS
PART NUMBER M39012/01-0015) FOR AN M39012 CONNECTOR GIVES NO INDICATION AS TO WHICH
INTERNAL DESIGN IS CONTAINED IN THE CONNECTOR, FOR EXAMBLE, THE M39012/01-0015,
SUPPLIED BY AUTOMATIC CONNECTOR, INC., MAY HAVE THE COMPATIBLE ONE-PIECE GLAND-NUT
DESIGN OR IT MAY HAVE A NEWER DEISGN (CALLED WEDGE-LOCK) WHICH INCLUDES A GLAND
NUT WITH A CAPTIVE FREE-SPINNING FERRULE THAT PRESSES THE FANNED-OUT CABLE-BRAID
AGAINST A CONICAL BODY WITHOUT ROTATING, AS THE GLAND NUT IS TIGHTENED. THIS NEWER
DESIGN IS NOT COMPATIBLE WITH THE EXISTING ONE-PIECE RP2330 ADAPTER BECAUSE THE
ADAPTER TENDS TO CUT THE CABLE-BRAID IN A SAWING ACTION AS IT IS TIGHTENED.
AS AN INTERIM SOLUTION TO MAKING THE RP2330 ADAPTER COMPATIBLE WITH THE WEDGE-LOCK
DESIGN (FOR EXAMPLE) AND ADAPTER-FERRULE, TO BE USED IN CONJUNCTION WITH THE RP2330
ADAPTER, MUST BE PROVIDED. THIS ADAPTER-FERRUL SHOULD DUPLICATE THE BASIC SHAPE OF
THE FREE-SPINNING FERRULE CONTAINED IN THE CONNECTOR.
TABLE III LISTS THREE SIZES OF ADAPTER FERRULE (FOR THE “WEDGE-LOCK” DESIGN ONLY) TO
BE USED WITH THE RP2330 ADAPTER. NOTE THAT THE INSIDE DIMENSIONS OF THE FERRULE
RESTRICT THE SIZE OF COAXIAL CABLE DIAMETER WHICH CAN BE USED. NOTE THAT THIS
FERRULE DOES NOT PROVIDE FOR RETENTION OF THE ORIGINAL WATERTIGHT INTEGRITY OF THE
COMPLETE CONNECTOR.
ANOTHER METHOD OF OBTAINING AN ADAPTER FERRULE IS TO USE THE ACTUAL FERRULE
PORTION OF THE CONNECTOR BY CUTTIN G IT FROM THE GLAND NUT.
COMMENT: A BETTER METHOD OF TERMINATING FLEXIBLE SHIELDING CONDUIT TO A COAXIAL
CONNECTOR MAY BE AN ADAPTER DESIGNED TO ATTACH TO THE OUTSIDE OF THE CONNECTOR
RATHER THAN DISTURBING THE INTERNAL COMPONENTS OF THE CONNECTOR ITSELF. THE REAR
END OF THE ADAPTER WOULD PROVIDE THREADS FOR ATTACHING A CONDUIT END-FITTING.
Figure 5-11. RP2330 Adapter for Coaxial Connector (Sheet 2 of 3)
CHANGE 1 of Revision 2
5-20