1、1 Julv 1995 SuPERSmlNG IXB“1399 (NAVY) SMTmON 406A 2 June 1982 2QISC N/A Fsc 1990 DISmEWrION 57mImmT A. Zqpmed for Wlic release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-“1399 (SH) SECIION 406B MILrSID-1399 (SH) SEcm
2、oN 406B 1. lmis Military standard is approved for use by all irrterestea CamtMndS of the Departmerrt of the Navy in the *cal developmt plans, design, and acquisition specifications for new ship acquisitions, ship mdernizations or conversions, and systems/equipmt for installation therein and into act
3、ive fleet shi, where applicable, H is available for use by all Departments and Agencies of the Department of Defense. 2. Beneficial aments (recapnmenaations, additions, deletions) and any pertinentdatawhichmaybeofuseiniqthisdocumentshculdbe addressed to: Cbmmder, Naval Sea systems Comand, SEA 03R42,
4、 2531 Jefferson lM for digital equip men;ts which process plain language classified information shall be installed as specified in MIL&TD-1680. 5.3.4 Installation. To enhan the cplity performance level of digital systems, the installation shall amply with the follming: (a) Digital System installatio
5、ns shall be contained within the mallest practical area, to minimize the extent of the grcund system* shallbepruperlycorrnectedtotheshipgraundsystem. (b) Circuits and metallic cabinet safety grounds in a digital system (c) Grcxnd system cables shall be as short as possible. (d) Primary pmer cables s
6、hall be installed with Illilxi-1I111II1 practical separation frcan the main ard branch m systens cable. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-L399 -4068 m 99999LL 048240b b5b m MIG!5“1399 (SH) SECTION 406B 6.1 Conditions. In a&iev
7、ing the purpose of this section, it is design stage of shipbard digital cmpter systems/equipmt, it may bemne systems/ec&mmtcanbeachievedbydeviat.ingfroanthestandard characteristics specified herein. Such cases shall qly with the pmvisions of sectim 6 19eviations11 of MIliSTP1399, with copies to the
8、program/projject that there mst be saarre flexibility of qlication. I)uring the arly that significant ac?vantages in the uverall desisn/aperatian of such marlager and NA- ocpnbat support Q&em Enginef=ring Eran&. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
9、rom IHS-,-,-MIL-STD-L399 -4066 m 99999LL 0482407 592 m MIliSID-1399 (S) SECTICN 406B 1 I PERIPHERRL I HIGH I POWER SUPPLY LOW 7 * SIGNAL GROUND INSULATED - - 4“H IPS HULL 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-I399 -4066 99999I1 04
10、82408 429 m “1399 (SI) SEElTCN 406B Digital equipment with common terminal for signal and cabinet ground D I GlTAL EQUIPMENT CABINET W I I - and safety ground Common terminal for signal - - BRANCH GROUND CABLE Signal ground 7 MAIN GROUND CABLE (SSGU-1000) - Single point - - digital ground ? 8 Provid
11、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-L399 -40bB m 9999911 0482409 365 MIGSTD-1399 (S) SECTION 406B Multiple cabinet equipment r “ 1 I I I I I I I module r-7 Cabinet B Logic module r- LA 1 1 T I+-+- I“ 1 -+ I I I I I L - Cabinet “N“ “ 1 +
12、“ I I I I I 1 Note 1 - For signal/cabinet grotlnding details (see f igW2 3) . I I I I I I A 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-L399 m “l.399 (SH) sElcIIIoN 406B W . - 2 W m -I A U v) 8 0 u. lu lu Provided by IHSNot for ResaleNo
13、 reproduction or networking permitted without license from IHS-,-,-“1399 (SH) SEKTION 406B Main ground cable FSGU-1 0001 A - Branch ground cables-* I Dlgltal equipment Multiple cabinet equipment I I Digital equipment Acceptable method Digital equipment A 2 Digital -J equipment Digital equipment Not
14、an acceptable method Note 1 Note 1 - connection method is not acceptable for shipboard digital installatiam. ?l.le -cal CQMeCtiQn is subject to long term corrosion and mical deterioraticm which may result in degrad& performme. Ea& branch cable shall be mechanically and electrically continu- during its entire run. 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
