S9407-AB-HBK-010 Datasheet, PDF (15/276 Pages) Glenair, Inc. – HANDBOOK OF SHIPBOARD ELECTROMAGNETIC SHIELDING PRACTICES

S9407-AB-HBK-010, Rev. 2
and the model for R3-3 remained cable type DSS-4. The reason for the change was to
provide a greater range for magnetic field fall-off.
d. Section 5 of NAVSEA 0967-LP-283-5010 provided an early criteria for cable spacing
and shielding which preceded Section 6. The criteria is included for reference in
Appendix A of this document. The use of Section 5 requirements can be identified by
cable marking suffixes, i.e., (XLL), (LL). These requirements were used on all
submarine installations and some surface ship SONAR installations not identified in
paragraph (a) above.
Installations which were made in accordance with cable spacing and shielding
requirements of NAVSEA 0967-LP-283-5010, Section 5 should remain under those
requirements. (NOTE: The latest shielding hardware of this document may be used.)
However, where a system is to undergo a major modification, or a compartment is to be
completely gutted, it may be advantageous to consider the cable spacing and shielding
requirements of Section 6 of this document particularly if EMI problems have been
previously identified in the existing system, or in a new system which is being installed.
As an aid in the situation where interfacing is needed between the previous and current
installation requirements, the guidelines are provided in appendix B.
e. Electronics Installation and Maintenance Book (EIMB), NAVSEA 0967-LP-000-0150,
EMI Reduction, and various specifications have provided a variety of cable separation
requirements generally used on surface ships other than for those noted in paragraph
"a." above. The use of these requirements can usually be identified by the cable
designations of "A" active (i.e., RA-RT), "S" susceptible (i.e., RS-RN), and "none" for
passive (i.e., R-RR). Cable separations made under these requirements have generally
not been effectively maintained. The requirements of Section 6 of this document shall
be used for new SHIPALT installations and where backfitting is authorized. Where
there is a conflict between the EIMB requirements and the requirements of this
document, the requirements of this document shall be used. It is intended that the
EIMB will be revised to refer to this document for all future cable separation and
shielding requirements.
1.4 LIST OF REFERENCED DOCUMENTS
The following list includes Federal and Military Specifications and Standards and other
publications and drawings that appear in the text, notes, or drawings throughout this handbook.
SPECIFICATIONS
Federal
FF-W-84
Washers, Lock (Spring)
L-P-410
Plastic, Polyamide (nylon), Rigid:
Rods, Tubes, Flats, Molded and Cast Parts
O-F-499
Flux, Brazing, (Silver Alloy, Low-melting
Point)
QQ-A-225
Aluminum and Aluminum Alloy Bar, Rod,
Wire or Special Shapes; Rolled, Drawn or
Cold Finished; General Specification for
1-5