1、MIL-I-28763C( EC) AMENDMENT 2 30 August 1985 SUPERSEDING AMENDMENT 1 20 July 1983 MILITARY SPECIFICATION INTERROGATOR SET, AN/UPX-27 This amendment forms a part of Military Specification MIL-I-28763C, dated 30 November 1977, and is approved for use within the Space and Naval Warfare Systems Comand,
2、Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. PAGE 1 2.1, line 1: 2.1 alSPECIFICATIONS“, “MILITARY“: Delete “The“ and substitute “Unless otherwise specified, the“. After “MIL-E-16400“. delete llL/ll and at bottom of page, delete I- 1/
3、Revision F applies“. PAGE 2 2.1, “STANDARDS“, “MILITARY“, MIL-STD-781: Delete “Re1 i abi 1 ity Test Exponent i al/Di stribu- tion“ and substitute “Reliability Design Qualification And Production Acceptance Tests: Exponent i al Distribution“. * 2.2, “other pub1 icat ions“, after “DoD AIMS 64-900A“, a
4、dd: “NAVAL AIR SYSTEMS COMMAND (NAVAIR) WS-6536D Process Specification Procedures And Requirements For Prepara- tion And Soldering Of Electrical Connections“. PAGE 3 3.4.1: Delete the text and substitute: “The selection of parts shall be in accordance with MIL-E-16400. However, this requirement shal
5、l not preclude the use of parts of smaller physical characteristics, provided that the use of such parts is restricted to those applications whereby a saving in weight or one metric (linear) dimension of at least 25 percent can be effected. PAGE 4 3.4.3.3. 1 ine 5: Delete “prevent“ and substitute “p
6、reclude“. PAGE 6 3.4.12, line 2: Delete “rough shocks during transportation and“. 3.4.12.2, line 2: Delete “MIL-STD-167“ and substitute “MIL-E-16400“. 3.4.13.1e: After “Primary“ add .power*. PAGE 7 3.4-13.3, line 2: After “ambient“, add operating“. 3.4.15.2: Delete. test points for all-video signal*
7、. 3.4.18. last sentence: Delete “Test points for all signal“. Substitute “Reatiily accessible 1 of 6 FSC 5895 DISTRIBUTION STATEMENT A. Approved for public release; distribution is un1 imited. THIS DOCUMENT CONTAINS & PAGES Provided by IHSNot for ResaleNo reproduction or networking permitted without
8、 license from IHS-,-,-MI L-I-28763C( EC) AMENMIENT 2. PAGE 12 3.5.20, last sentence: Delete “Lowered“ and substitute “Louvered. PAGE 24 3.7.1.1, title: 3.7.1.1.: Add the following title: “KIR-1A computer enable“. Delete “KIR-1A computer enable“ and substitute “Mode 4 enabling“. PAGE 26 3.7.1.1.2: Ad
9、d the following title: “KIR-1A normal-remote operation“. 3.7.1.1.3: Add the following title: “KIR-1A normal or multiplex operation“. After 3.11, add the following new paragraph: “3.12 Leakage current (equipment). When practicable, the leakage current of the equipment shall not exceed 5 milliamperes
10、(mA) to ground, whether or not such equipment contains radio inter- ference filters or capacitors. of 5 rii4, a warning plate shall be attached to the equipment reading: Should the equipment have an unavoidable leakage current in excess DANGER - Do not energize this equipment unless frame and all ex
11、posed metal parts are grounded.“ After “3.12“, added by amendment 1, add the following new paragraphs: * “3.13 Workmansh i p. * “3.13.1 General workmanship. Workmanship shall conform to the Workmanship paragraph of * “3.13.2 Workmanship screen. All equipment shall withstand a detect detection vibrat
12、ion screen of random type vibration at 0.049 /Hz +_3 di3 from 80 Hz to 350 Hz and temperature cycling with operation at the maximum and minimum operating temperatures and dwell time at the nonoperating temperature extremes. MI L-E- 16400. 2 * “3.13.3 Solaering and soldering processes. Soldering, sol
13、dering procedures, and processes shall conform to WS-6536 It PAGE 27 4.3: Delete first two sentences and substitute: “First article inspection shall be performed on two sampie units, and shall consist of all examination and testing necessary to determine compliance wth the requirements herein.“. 4.3
14、.1, line 3: Delete “consecutive“. PAGE 28 4.3.8: Delete and substitute: “4.3.8 Vibration tests. Vibration tests shall be conducted in accordance with MIL-E-16400, with the equipment energized and in the operating condition during and after this test.“. 4.3.8.1 and 4.3.8.2: Delete. 4.3.10.2: After “w
15、ith“, add “the AN/UPX-27“. PAGE 29 4.4.1, last sentence: Delete. 4.4.2, first sentence: After “except“, Add “heat test,“. 2 i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3 MIL-I-287b3C (2) 58 9999906 OL5qbbb h m! I -1 I 1- MIL-I-28763C(EC) AMENDM
16、ENT 2 PAGE 30 * 4.5.2: Delete. 4.5.3: Add as last sentence: “If a failure occurs, the contractor shall, at no additional cost to the Government, analyze the failure, determine the corrective action required, implement and demonstrate the effectiveness of the corrective action to the satisfaction of
17、the Government. After “4.61, Add the following new paragraphs and figure: “4.7 Leakage current. Leakage current shall be measured at 115 volts (V), 60 Hz and 400 Hz. Leakage current shall be measured on one equipment of the first months production. WARNING THIS TEST MAY BE HAZARDOUS DUE TO THE UNGRO
18、UNDED CONDITION OF THE EQUIPMENT DURING THE TEST. ELECTRIC SHOCK PROTECTION. THE UNITED STATES GOVERNMENT NEITHER ASSUMES NOR ACCEPTS RESPONSIBILITY FOR ANY INJURY OR DAMAGE THAT MAY OCCUR DURING OR AS A RESULT OF THIS TEST. DO NOT TOUCH EXPOSED METAL SURFACES WITHOUT ADEQUATE “4.7.1 Equipment test
19、connection. After power removal, each equipment directly connected to an external power source and units deriving power from the equipment shall be placed on an insulated surface. from the equipment shall be intact. The safety ground conductor between the equipment and the source power shall be open
20、ed during the test. OBSERVE WARNING STATEMENT. The equipment shall be connected as shown in FIGURE 2 for single phase source power. “4.7.2 Measurement. Leakage current shall be measured on equipment in this normal operating configuration. Equipment controls in each operating mode shall be such that
21、maximum power will be utilized during leakage current measurements. voltage-drop method. A true rms voltmeter shall be used. The voltage measured across the 1500-ohm resistor, when equal to 7.5 V, represents 5 mA of leakage current. The overall measurement error shall not exceed 5 percent. The probe
22、 shall be used on all external conducting parts such as case, connector housings, recessed calibration or adjustment controls, and control shafts with knobs removed. positions available in FIGURE 2. The open safety ground conductor shall be reconnected immediately after the test is completed.“. All
23、safety ground conductors between the equipment and units deriving power The leakage current shall be determined by the The voltage shall be measured from each part to ground for every combination of switch After “4.7.2“, added by amendment 1, add the following new paragraphs and figures: * “4.8 Gene
24、ral workmanship. The equipment, including subassemblies and assemblies, shall be examined for workmanship and soldering during the fabrication and assembly process, and at the end item level, for conformance to the requirement of 3.13. Each solder connection and its associated wiring or leads shall
25、be visually examined. * “4.8.1 Workmanship screen. Vibration and temperature cycling shall be performed on each equipment. Vibration shall be performed prior to temperature cycling. * “4.8.2 Vibration. The vibration may be performed at the module, drawer, or end item level. All the hardware includin
26、g cables and connectors shall be exposed to vibration. The vibration shall be random, or subject to procuring activity approval, pseudo-random or complex waveform vibration, for an accumulated time of ten minutes in the axis deemed most susceptible to vibration excitation. All items shall be hard-mo
27、unted (without shock isolators) and subjected to the vibra- tion conditions of FIGURE 3. Input vibration levels shall be measured at the mounting points of the item under vibration. If variations are found at these points, the level used for control purposes shall be the average of the levels at the
28、 mounting points. bandwidth no greater than 10 Hz for vibration frequencies up to 500 Hz, and 100 Hz for vibration frequencies above 500 Hz, shall be used for the control and analysis of the acceleration spectral density (ASD). The instantaneous acceleration peaks may be limited to three times the r
29、ms acceleration level. The item shall be energized during vibration and appropriate input singals applied to observe any abnormal conditions of the output functional characteristics. All failures occurring during screening shall be corrected and the vibration resumed. Control equipment having a 3 Pr
30、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-26763C (2) 56 7777906 0354b67 6 - I .I tn W f- LL O W O J U w z w a a a a MIL-I-Z8763C( EC) AMENDMENT 2 .- . .I Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
31、rom IHS-,-,-MIL-I-28763C (2) 58 W 9999906 035668 T E MIL-I-28753C (EC) AMENDMENT 2 ASO 0.04 - +3dB 3dB/OCTAVE I I $/Hz I I * 20 80 Frequency (Hz) 350 2000 FIGURE 3. Random vibration curve. * “4.8.2.1 Temperature cycling. Each unit shall be subjected to 10 cycles of the temperature curve shown-ein FI
32、GURE 4. The temperature rate of change shall be not less than 5C per minute. Unit power shall be turned on and off at the indicated times. The unit shall be positioned for maximum exposure to the changing temperature. Where performance measurements are called for, a minimal functional operating test
33、 shall be performed. The dwell time shall be maintained until the largest electrical or electronic part in the unit reaches 80 percent of the chamber temperature. cumulative total of 10 cycles. When failures occur, the unit shall be reworked and the cycling continued for a DWELL + lSe/- TIME PERFORM
34、ANCE MEASUREMENTS FIGURE 4. One cycle of temperature curve (not to scale).“. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIt-I-8763C (EC) AMENDMENT 2 The margins of this amendment are marked with an asterisk to indicate where changes (additions
35、, modifications, corrections, deletions) from the previous amendment were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document . based on the entire content irrespective of the marginal notations and relationship to the last previous amendment. 6 Preparing activity: (Project No. 5895-N317(EC) NAVY - EC f Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
