1、MIL-I-24728A AMENDMENT 1 1 June 1995 MILITARY SPECIFICATION INTERCONNECTION BOX, FIBER OPTIC GENERAL SPECIFICATION F distribution is unlimited. 5975 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL- I -24728A Amendment 1 Add as new paragraph 3.5.1
2、2: “3.5.1.2 Discontinuit . When measured in accordance with 4.6.4.1. the change in optical transmittance of the qualiTTX$7Edr connector installed in the fiber optic interconnection x in a standard manner shall meet the requirements contained in the applicable component specification. PAGE 7 3.5.3.2
3、 Delete. 3.5.3.6: Delete and substitute: “3.5.3.6 Fluid imnersion (see 4.6.6.6). The interconnection box gasket shall reveal no cracks, splits, voids. excessive swelling or softening of material, peeling. oc change characteristics in a manner that results in loss of seal integrity. unless otherwise
4、 specified. 3.5.3.7. line 3: Delete: “3.5.1.1“ and substitute “3.5.1.1 and 3.5.1.2.“ 3.5.3.8: Del ete and substi tute : “3.5.3.8 Shock (see 4.6.6.8 . The interconnection box shall show no evidence of broken or displaced parts. cracks, or hysicaldamage that would impair the intended operation of the
5、box. Minor physical dama e such as sma c 1 cracks. mi nor yielding of structure, out-of -tolerance clearances. and simi lar damage shalq not be cause for failure unless such damage causes unacceptable impairment of the Interconnection box performance. The interconnection box shall meet the requireme
6、nts of 3.5.1.1 and 3.5. l. 2. “ 3.5.3.9. line 2: Delete: “3 hours“ and substitute “1 hour.“ 3.5.3.10: Add: “(see 4.6.6.10)“ after the paragraph title. PAGE 8 3.6.2 : Delete “NOTICE“ and substi tute “WARNING. “ 3.6.2: Delete “DANGER“ and substitute “WARNING.“ 4.4.2. line 2: Delete: “The sample unit s
7、hall be subjected to the inspections of group I. The sample unit shall then be subjected to the group II and group III tests specified on the individual specification sheets. After completion of sample testing, all units shall be resubjected to group I testing.“ 4.4.4. line 25: Delete: “that has bee
8、n no production“ and substitute “there has been no production.“ PAGE 10 TABLE II. row 5: Delete and substitute: I Identification markings 3.6 I I I I 4.6.1 - 11 TABLE II, row 11: Delete and substi tute: I Fluid imrsion 1 3.5.3.6 I 4.6.6.6 I - 31 I PAGE 11 TABLE III. row 4: Delete and substitute: I I
9、dentification markings I I I 3.6 4.6.1 PAGE 14 4.6.5.5. line 1: Delete “The loading and operating conditions shall be as specified (see 3.1).“ 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-I-24728A Amendment 1 PAGE 15 4.6.6.2. line 4: Delete:
10、 “and dimensionally measured in accordance with 4.6.3.2.“ 4.6.6.3: Add the following sentence at the end: “The subcycle shall be included in the test.“ 4.6.6.3. line 2: Delete “MIL-SlD-1678“ and substitute “Wo-STO-1678.“ 4.6.6.5: Delete and substitute: “4.6.6.5 Water Dressure (see 3.5.3.5 . A comple
11、tely assembled interconnection box shall be immersed in water for ours. n ess ot erwisk specified (see 3.11, the applied ressure shall be 0.1 megapascals (equivalen;l8t; a dept: Af 10.4hmeters). The interconnection box shall le maintained at a temperature between 10 and 35C for the duration of the t
12、est. At the completion of the test, the interconnection box shall be visually examined in accordance with 4.6.1.“ 4.6.6.6: Delete and substi tute: “4.6.6.6 Fluid immersion (see 3.5.3.6 . The interconnection box gasket shall be imnersed in each of the fluids in table VI at the temperaturespecified fo
13、r 24 hours. Sample preconditioning shall b under ambient conditions. One immersion cycle shall be performed. The interconnection box gasket shall be com letely dried after each immersion. At the completion of the test, the interconnection box gasket shayl be vi sua1 1 y examined. “ TABLE VI, rows 6
14、and 7: Delete and substitute: Coolant L/ 20 - 25 ASTM D 1141 Seawater 20 25 “_ PAGE 16 4.6.6.7. line 6: Delete: “of at least 50 microseconds (PS) and substitute: “sufficient to resolve discontinuities of 50 microseconds (PS) or longer“ 4.6.6.8. line 4: Delete: “of at least 50 microseconds (PS)“ and
15、substitute: “sufficient to resolve discontinuities of 50 microseconds (PS) or longer“ 4.6.6.10: Delete and substitute: “4.6.6.10 Operating temperature (see 3.5.3.10). The interconnection box shall be subjected to the specified operating temperature extremes as shown in table VII. The change in optic
16、al transmittance (see 4.6.4.1) shall be determined during each step of constant temperature. “TABLE VII. Operating temperature schedule. Step Duration 1. Maintain +25“C *2“C 2 hours (max) 2. Ramp to high operating temperature 1 hour 3. Maintain high operating temperature 1 hour 5. Maintain +25OC 2“C
17、 2 hours (max) 4. Ramp to +25“C *2“C 24 hours I 6. Ramp to low operating temperature I _ 2 hours (max)“ 1 I 7. Maintain low operating temperature I 24 hours I 8. Ramp to +25“C 2“C 1 hour 9. Maintain +25“C *2“C 2 hours (max) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted witho
18、ut license from IHS-,-,-MIL-I-24728A Amendment 1 4.6.8. line 2: Delete: “MIL-1-17214“ and substitute “ASTM A 342.“ PAGE 17 6.5. line 2: Delete: “(see 4.6)“ and substitute “(see 4.51. CONCLUDING MATERIALS Custodians : Army - CR Navy - SH Air Force - 85 “NA Review activities: Amy - AR, MI Navy - As. CG, MC. YD Ai r Force - 17, 19. 80. 99 DM - ES Preparing activity: Agent : Navy - SH DIA - ES (Project 6099-0004) 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
