1、MIL-D-85857 Lt7 W 9777706 0258355 5 W c-yq -30 MIL-D-85859(AS) 4 AUGUST 1987 MILITARY SPECIFICATION DISTRIBUTION BOX J-3425C/AWW This specification is approved for use within the Naval Air Systems Command, Department of the Navy and is available for use by all Departments and Agencies .of the Depart
2、ment of Defense. 1. SCOPE 1.1 Scope. This specification establishes the design, performance, manufacture, and acceptance requirements for the J-3425C/AWW Distribution Box, herein referred to as the distribution box. The distribution box is designed to provide interface between the AN/AWW-12 or AN/AW
3、W-9 Control - Monitor Set and supporting test equipment. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this specification to the extent specified herein. Unless otherwise specifi
4、ed, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications,and Standards (DODISS) and supplement thereto, cited in the .solicitation. I 1 Beneficial comments (recommendations, additions, deletions) erd any pertinent data which may be of
5、use in improving this document should be addressed to: Commanding Officer, Naval Air Engineering Center, Systems Engineering ad Standardization Department (SESD) Code 53, Lakehurst, NJ 08735.5100, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at t
6、he end of this document or by letter. 1 I AMSC N/A FSC 4935 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. f l CI THIS DOCUMENT CONTAINS dl PAGES. I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-85857 qi U 4
7、77790b 01258356 7 SPECIFICATIONS FEDERAL PPP-T-60 PPP-T-76 PPP-B-636 MI L ITARY MIL-P-116 MI L-C-3643 MIL-C-3650 MI L -Nu 18307 MIL-S-19500 MIL-T-28800 MI L-M-38510 MIL-C-38999 MIL-C-39012 MIL-H-46855 MIL-C-55302 MIL-Co55544 MI L-D-85859( AS) Tape, Packaging, Waterproof Tape, Pressure Sensitive Adhe
8、sive, Paper (For Carton Sealing) Boxes, Fi berboard Preservation,- Methods of Connector, Plug, Electrical Series HN, Type UG-59E/U Connector, Coaxial Radio Frequency, Series LC Nomenclature and Identification for Electronics, Aeronautical, and Aeronautical Support Equipment Including Ground Support
9、Equipment Semiconductor Device, General Specification for Test Equipment for Use with Electrical and El ectroni c Equipment, General Specification for Mi croci rcui t, General Speci fi c.ati on for Connector, Electrical, Circular, Miniature, High Density, Quick Di sconnect (Bayonet, Threaded, and Br
10、eech Coupling), Environment Resistant, Removable Crimp and Hermetic Solder Contacts, General Specification for Connector, Coaxial, Radio Frequency, General Speci fi cat i on for Human Engineering kequirements for Military Systems, Eqpipment and Facilities Connector, Printed Circuit Subassembly and A
11、ccessories Connector, Electrical, Environment Resistant for use with Flexible Flat Conductor Cable and Round Wire, General Specification for 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-D-85857 47 4797706 0258357 9 W, MI L-D-85859 (AS) I M
12、IL-C-83723 I I. STANDARDS MILITARY MIL-STD-108 MIL-STD-129 MIL-STD-130 MIL-STD-147 MIL-STD-198 MIL-STD-199 MIL-STD-454 MIL-STD-461 MIL-STD-462 MIL-STD-470 MIL-STD-471 MIL-STD-701 MIL-STD-704 MIL-STD-781 MIL-STD-785 Connector, Electrical (Circular, Environment Resistant), Receptacles and P1 ugs , Gen
13、eral Speci fi cat i on for Definition of Basic Equipment for Enclosure for Electric and El ectroni c Equipment Marking for Shipment and Storage Identification Marking of US Military Property Palletized Unit Loads Validated October 1974 Capacitor, Selection and Use of Resistor, Selection and Use of S
14、tandard General Requirements for El ectroni c Equipment Electromagnetic Emission and Susceptibility Requirements for the Control of Electromagnetic Interference Electromagnetic Interference Requirements, Measurements of Maintainability Program Requirements for Systems and Equipments Prediction Maint
15、ainability Demonstrations List of Standard Semiconductor Devices Aircraft Electric Power Characteristics Reliability Design Qualification and Production Acceptance Tests; Exponential Distribution Reliability Program for Systems and Equipment Development and Production MIL-STD-810 Environmental Test
16、Methods 21 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-85857 44 m 7793906 0258376 2 Quantity of Distribution Boxes Offered for Acceptance MIL-D-85859 (AS) specified in 4.6.1. The life test sample shall be selected by the Government inspecto
17、r in accordance with table III, (Distribution boxes which have successfully passed the Sampling Tests, Ref iabil i ty Tests, or Special Tests may be selected for life tests.) When reliability tests are conducted, the life test may be omitted if, during the reliability tests, a quantity of distributi
18、on boxes equal to, or more than, that listed in table III receive at least 300 hours each of test time. TABLE III. Life test sample selection First 25 Next 175 Next 300 Quantity to be Selected for Sampl ing Test 1 1 1 1 for each additional 500 or fraction thereof 4.6.1 Test conditions. The life test
19、 shall be conducted under the standard conditions specified in 3.4.4. 4.6.2 Test periods. The test may be run continuously or intermittently, Any period of operation shall be of sufficient duration to permit the distribution box temperature to stabilize. box shall be turned on and off several times
20、and put through its various phases of operati on . Periodically, the distribution 4.6.3 Performance check. .At approximately 8-hour intervals during the test, a limited performance check shall be made, 4.6.4 Test data. be replaced and the operation resumed for the balance of the test period. 4.6.4.1
21、 Failure report. In the event of a failure, the Government inspector shall be notified immediately. In the event of part failures, the defective part shall 4.7 Environmental tests. The distribution box shall be subjected to environmental tests specified in 4.7.1 through 4.7.8. 4.7.1 High temperature
22、. The distribution box shall be tested in accordance with MIL-STD-810, Method 501.2, Procedure I modified as follows: a. Step 1. controlled conditions of MIL-STD-810. b. Step 2. The high storage temperature shall be 85OC. The storage temperature shall be maintained for 24 hours. shall be 85O for 4 h
23、ours and 75OC for the following 20 hours. c. Step 4. The highest continuous operating temperature shall be 55OC1 The distribution box shall be operated for 20-minutes intermittently at 7loC after the required warm-up time. The relative humidity shall be between 20 and 35 percent. Perform operation t
24、ests of 4.5.1.2 under the closely The storage temperature 22 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-D-85859 49 m 9999906 0258377 4 Is MIL-11-85859 (AS) d. Step 5. Perform operation tests of 4.5.1.2. e. Step 6. The distribution box shall
25、be operated during the return to standard ambient conditions. f. The rate of temperature change (steps 2, 4, and 6) shall be between lo and 5OC per minute. 4.7.2 Low temperature. temperature tests in accordance with MIL-STD-810, Method 502.2, Procedure I modified as follows. The distribution box sha
26、ll be subjected to low a. Step 1. controlled conditions of MIL-STD-810. Perform the operation tests of 4.5.1.2 under the closely b. Step 2. The low storage temperature shall be -62OC. The relative humidity shall be uncontrolled during temperature transition and while at storage temperature. The stor
27、age temperature shall be maintained for 24 hours. The distribution box shall be maintained at -62OC for 4 hours and then -55OC for the following 20 hours. c. Step 4. The lowest operating temperature shall be -4OOC. Stabilize d. Step 5. e. Step 6. The distribution box shall be operated during the ret
28、urn to the test set temperature for 2 hours. specified in 3.4.4.2. controlled ambient conditions. for 2 hours. Energize the distribution box and allow the warm-up time Stabilize the test set temperatures f. Step 7. Perform the operation test of 4.5.1.2. g. The rate of temperature change (steps 2, 4,
29、 and 6) shall be between lo and 5OC per minute. 4.7.3 Humidity., The distribution box shall be subjected to the humidity test specified in MIL-STD-810, Method 507.2, Procedure III. , 4.7.4 Watertight. The distribution box shall be watertight tested in accordance with MIL-STD-108. an after exposure.
30、4.7.5 fungus. Susceptibility of the distribution box to fungus growth shall be determined by examining the list of materials using the criteria in MIL-STD-454, Requirement 4, to identify fungi nutrient materials. The distri bution box shall be operated during 4.7.6 Altitude. The distribution box sha
31、ll be subjected to an altitude test in accordance with MIL-STD-810, Method 500.2, Procedure I, except the simulated altitudes shall be 15,000 feet (operating) and 40,000 feet (nonoperating). The following details shall modify the MIL-STD-810 when necessary: - a. Pretest data: Perform the operation t
32、est of 4.5.1.2. , 23 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL -D- 85859 (AS) b. Length of time required for operation and measurements: Warm-up or stabilization time as required in 3.4.4.2, plus a minimum of 2 hours operation in the operat
33、ion test of 4.5.1.2. c. Perform the operation test after return to standard ambient conditions. Degradation of distribution box performance beyond the specified requirements of 4.5.1.2 shall constitute a failure. 4.7.7 Vibration. The distribution box shall be subjected to a vibration test in accorda
34、nce with MIL-STO-810, Method 514.3, Procedure X, modified as follows: a. The distribution box shall be attached directly to the vibration table or to an intermediate structure which is so designed as to be capable of transmitting the specified magnitudes of vibration to the points of the distributio
35、n box attachment throughout the required test frequency range. b, During vibration the distribution box shall be operating in the specified operation check mode. c. Perform the operation tests required in 4.5.1.2. 4.7.8 Shock. The distribution box shall be subjected to a shock test in accordazith MI
36、L-STD-810, Method 516.3, Procedure I, using the half-sine shock waveform of the Half Sine Shock Pulse Configuration and its Tolerance Limits figure of MIL-STD-810, nominal duration (D) of 11 ms. distribution box shall be given three shocks in each direction and each axis (total 18). Peak value (A) o
37、f each shock shall be 30 gs. The distribution box shall be operated during the shock, After the shock exposure, perform the operation test specified in 4.5.1.2. 4.7.9 Transit drop. The distribution box shall be subjected to a transit drop test in accordance with MIL-STD-810, Method 516.3, Procedure
38、II, using a drop height of 760mm (30 inches). The distribution box shall be dropped once on each corner and each face for a total of 14 drops, operation test specified in 4.5.1.2. The Perform the 4.7.10 Bench handling. bench handling test of MIL-STD-810, Method 516.3, Procedure V, modified as fol 1
39、ows : The distribution box shall be subjected to the a. b. The distribution box shall be tested while operating in the operation test of 4.5.1.2. Examine the distribution. box for mechanical damage. control, indicator, fuseholder, connector, or other protruding Perform the operation test of 4.5.1.2.
40、 Damage to any component part shall constitute a failure. c. 4.11 Warm-up time. determine the capability of the distribution box to conform to the warm-up time requirements of 3.4.4.2. The distribution box shall be subjected to tests to 24 Provided by IHSNot for ResaleNo reproduction or networking p
41、ermitted without license from IHS-,-,-MIL-D-85859 Li9 9999906 0258377 B MIL-D*85859(AS) 4.12 Input power test. 4.12.1 Voltage and frequency variation tests. The distribution box response to the input voltage and frequency variations shall be tested in accordance with MIL-T-28800. the exposure but di
42、stribution box shall not sustain damage and shall return to normal operation when test is completed. Operational performance may be degraded during 4.12.2 Voltage and frequency-transient test. The distribution box performance during vol tage transients shall be tested in accordance with MIL-T-28800.
43、 but distribution box shall not sustain damage and shall return to normal operation when test is completed. 4.13 Electromagnetic interference (EMI) tests. EM1 tests shall be performed in accordance with MIL-STD-462 to determine that the distribution box meets the requirements of MIL-STD-461 for Clas
44、s i3 equipment (see 3.4.4.4). The distribution box shall be operating during the EM1 tests. distribution box shall be monitored for signs of vulnerability during susceptibility tests. 4.13.1 Conducted emissions, power and interconnecting leads, 0.015 to 50 - MHz. on the power and interconnecting lea
45、ds in accordance with MIL-STD-462, Method CE03. 4.13.2 Conducted emissions, power leads, spikes, time domain. The distribution box shall be subjected to a conducted emission test on the power leads in accordance with MIL-STD-462, Method CE07. 4.13.3 Conducted susceptibility power leads, 30 Hz to 50
46、KHz. The distribution box shall be subjected to signals between 30 Hz to 50 KHz being injected on the dc power leads in accordance with MIL-STD-462, Method CSO1. Operational performance may be degraded during the exposure The The distribution box shall be subjected to a conducted emission test 4.13.
47、4 Conducted susceptibility power leads, 0.05 to 400 MHz. The distribution box,shall be subjected to signals between 0.05 to 400 MHz being injected on the dc power leads in accordance with MIL-STD-462, Method CS02.- 4.13.5 Conducted susceptibility, spikes, power leads. The distribution box shall be s
48、ubjected to the injection of spikes on all ungrounded ac and dc input power leads in accordance with MIL-STD-462, Method CS06. 4.13.6 Radiated emissions, electric field, 14 KHz to 10 GHz. The distribution box shall be probed for points of maximum radiation over the frequency range of 14 KHz to 10 GH
49、z in accordance with MIL-STD-462, Method RE02. 4.13.7 Radiated susceptibility, magnetic induction field, spikes and power frequency. each having a waveform in accordance with MIL-STD-462, Method RS02, Part I and subjected to 20 amperes applied to a test wire at power frequencies of the distribution box in accordance with MIL-STD-462, Test Method RS02, Part II. 4.13.8 Radiated susceptibility, electric field, 14 KHz to 10 GHz. The distribution box shall be subj
