AIR FORCE MIL-A-25546 C (2)-1994 AMPLIFIER AUDIO FREQUENCY AM944 AIC-13《AM944 AIC-13音频扬声器》.pdf
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1、MIL-A-255YbC (2) m 999990b 1988728 537 = INCH-POUND MIL-A-25546C (USAF) AMENDMENT 2 26 AUGUST 1994 SUPERSEDING AMENDMENT 1 6 April 1984 MILITARY SPECIFICATION AMPLIFIER, AUDIO FREQUENCY AM-944/AIC-13 This amendment forms a part of Military Specification MIL-A-25546C (USAF) dated 18 June 1970 and is
2、approved for use by the Department of the Air Force and is available for use by all Departments and Agencies of the Department of Defense. PAGE 1 2.1: Delete: * Delete: * Delete: Delete: Add : Delete : Delete: Add : Both “MIL-E-5272“ and “MIL-C-8384“ and its title. The title of MIL-STD-461 and subst
3、itute: “Requirements for the Control of Electromagnetic Interference Emissions and Susceptibility“. The title of MIL-STD-704 and substitute: “Aircraft Electric Power Characteristics“. The title of MIL-STD-781 and substitute: “Reliability Testing for Engineering Development, Qualification, and Produc
4、tion“. “MIL-STD-810, Environmental Test Methods“ and “MIL-C-28748, Connector, Electrical, (Molded Body) and Accessories“. The title of MIL-STD-810 and substitute: “Environmental Test Methods and Engineering Guidelines“. The title of MIL-STD-28748 and substitute: “Connector, Electrical, Rectangular,
5、Rack and Panel, Solder Type Pin Contacts, Size 16“. The headings “HANDBOOK“ and “MILITARY“ and list “MIL-HDBK-781, Reliability Test Methods, Plans, and Environments for Engineering Development, Qualification, and Production“ PAGE 2 3.2.2 : Delete “MIL-C-8384“ and add “MIL-C-28748“. AMSC N/A 1 of 4 F
6、SC 5831 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-2554bC (2) D 9999906 L98729 473 MIL-A-25546C AMENDMENT 2 PAGE 5 * Add: “3.5.7.1 Talk-Listen Test. A talk-l
7、isten test shall be employed as specified in paragraph 4.5.6.“ * Add: “3.5.9 Environmental Tests: Environmental testing shall be conducted as discussed in paragraph 4.5.7. PAGE 6 * Table IV: Insert between Inspection or Test entries “Electrical Tests“ and “Input-Output Characteristics Test“: Inspect
8、ion or Test Paragraph or Preproduction Individual Sampling Requirement “Impedance Tests 4.5.2.1 3 All“ PAGE 7 * Table IV: Delete the following Environmental Tests: Salt Spray Temperature Shock Sand and Dust Fungus and add under Environmental Tests (to be performed on 2 Preproduction amplifiers only)
9、: Salt Fog Explosive Atmosphere * Table IV: Add under the following headings: Inspection or Test Paragraph o Preproductio Individual Sampling Requirement “Environmental Stress Screeni 4.5.9 all all all“ PAGE 8 * Add: “4.5.2.1 Impedance Tests. The amplifiers shall be tested for input impedances and o
10、utput impedances as detailed in paragraphs 3.5.1 and 3.5.2, respectively. I * 4.5.3 Add at the end of the paragraph: “Linearity shall be tested for all amplifiers as specified in paragraph 3.5.3.1 and Table I. Clipping tests shall be performed on preproduction and sampling amplifiers per paragraph 3
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