1、MILITARY SPECIFICATION COUPLER, ANTENNA, AN/SRA-33, FOUR-CHANNEL, AUTOMATICALLY TUNED This amendment forms a part of Military Specification NIL-C-24219A(EC) dated 8 May 1970 PAGE 1 2.1, SPECIFICATIONS, MILITARY: Delete MIL-S-901 - Shock Tests, H. I. (HIGH-IMPACT), Ship- board Machinery, Equipment an
2、d Systems, Requirements for and MIL-Q-9858 - Quality Program Requirements“ . Characteristics, Measurement of“. ment Development and Production. 2.1, STANCARDS, MILITARY, after MIL-STD-461“: 2.1, STANDARDS, MILITARY: 2.1, HANDBOOKS, MILITARY: Add MIL-STD-462 - Electromagnetic Interference Delete “MIL
3、STD-785 - Reliability Program for Systems and Equip- Delete entire entry. PAGE 2 3.1: Delete and substitute I Interchanqeabi 1 ity. Mechanical and electrical interchangeability shall exist between assemblies, subassemblies, and replaceable parts performing the same functions in other equipments of
4、the same production type regardless of the manufacturer or supplier. Interchangeability for the purpose of this paragraph does not mean identity, but requires that a substitution of such liKe assemblies, subassemblies, and replaceable parts be easily effected, without resorting to selections, in acc
5、ordance with the following requirements. “(a) No physical or electrical modification to any parts of the substituted items or the residual equipment shall be necessary. “(b) Realignment of the electrical circuit in the substituted assemblies of the residual equipment shall not be necessary. “(c) The
6、 substitution shall have no deleterious effect on the equipments performance capability. “3.1.1 The AN/SRA-33 shall be fully compatible in operation with the ANISRC-2OA and AN/SRC-21A transceivers. V-7 versions of the AN/WSC-3(V) transceiver is also required except for the tuning increments. Operati
7、onal compatibility. Full compatible operation with the V-6 and 3.3.1.1, line 1: Delete “class“ and substitute “range“. PAGE 3 3.4.4, line 4: Delete It O1 (T)“ and substitute “CEO1 (BB)“. PAGE 6 3.4.39.2, 3.4.39.3, 3.4.39.4, 3.4.39.5, 3.4.39.6, and 3.4.39.7: 4.1.1: Delete. Delete. PAGE 7 4.1.3: Delet
8、e, 4.2 (b): Add “(6) Electromagnetic compatibility (see 4.4.7)“. T THIS WCUMENT CONTAINS 2 PAGES FSC 5985 62 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-242 19A (EC ) AMENDMENT 1 PAGE 8 4.3.1: Delete. PAGE 9 4.4.3, fourth sentence: Delete.
9、PAGE 10 TABLE IV, (i) Heat test: Delete entry. 4.4.3.3 and 4.4.3.4: Delete. 4.4.4, second sentence: Delete. TABLE V: Delete “Shock 3.3.1.3.1“ and substitute Interchangeability 3.1“. PAGE Il 4.4.5.1, line 3: Insert “three“ between “fir.st“ and production“. 4.4.5.1, last sentence: Delete. 4.4.5.2, 4.4
10、5.3, and 4.4.5.7: Delete. 4.4.5.4, line 2: Delete “and 4.4.5.2“. Add new paragraphs 4.4.7 and 4.4.8: “4.4.7 Electromagnetic compatibility. The requirements of 3.4.4 shall be verified by tests performed in accordance with MIL-STD-462 on a unit from the first months production quantity. Any correctio
11、ns to the equipment required as a result of these tests shall be performed prior to shipment of the production units. subjected to examination and test to verify complete interchangeability. The manufactured part, subassembly, or assembly shall be mechanically substituted in the Government-furnished
12、 equipment (GFE) and an examination or test performed. within an equipment. The contractor shall select tests and examinations from the production inspection to verify the interchangeability. basis of being meaningful to the particular item being intercnariyed. khcrri ekrtrical or mechanical criteri
13、a are not specified in the specification, the contractor shall provide the criteria in sufficient detail to verify the electrical and mechanical aspects of interchangeability. The test shall be performed only once. All incompatibilities will be submitted as an engineering change proposal (ECP), and
14、if approved will be retrofitted on all units.“ “4.4.8 Interchangeability. Replaceable parts, subassemblies, and assemblies shall be These items shall be substituted one at a time Tests and examinations shall be selected on the Page 2 of 2 Preparing activity: (Project 5985-N485) NAVY-EC .n, I g Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
