1、MIL-S-28854 (2) 58 m 7777906 015558q 7 m MIL-S-28854( EC) AMENDMENT 2 30 March 1984 SUPERSEDING AMENDMENT 1 4 April 1980 MILITARY SPECIFICATION SWITCHING GROUP, TRANSMITTER ANTENNA OK-261/BRC This amendment forms a part of Military Specification MIL-S-28854(EC), dated 19 February 1980, and is approv
2、ed for use by the Naval Electronic Systems Comnand, Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. PAGE 1 * 2.1, “SPECIFICATIONS8, “MILITARY“: Delete “MIL-E-15090 Enamel, Equipment, Light-Gray (Formula No. 111) and substitute “MIL-C-501
3、5 Connector, Electrical, Circular, Threaded, AN Type, General Specification For“. 2.1 , II SP E C I F I CAT I ON S “ , MI L I TAR Y I , aft er “MI L - C - 2 4 3 08“ , Add : “MIL-C-26482 Connector, Electrical (Circular, Miniature Quick Disconnect Environment Kes i stant) Receptacles And Plugs, Genera
4、l Specification For“ 2.1, “SPECIFICATIONS“, “MILITARY“: Delete MIL-C-28777/1“ added by Amendment 1. 2.1, “SPECIFICATIONS“, “MILITARY“, after “MIL-C-26482“, Add: “MI L-C-28840 Connectors, Electrical, Circular, Threaded High Density, High Shock, Shipboard Class D, General Specificat ion For“. Page 2 2
5、.1, “STANDARDS“, “MILITARY“: Delete “MIL-STD-740 Airborne And Structureborne Noise i4easur-e- ments And Acceptance Criteria Of Shipboard Equipment“. * 2.1, STANDARDSL1, “MILITARY“: Delete MIL-STO-965 Parts Control Program“. * 2.1, “STANDARDS“, “MILITARY“, after “MIL-STU-1472“, Add: “MS 3057 “Clamp,
6、Cable, Electrical Connector“ * 3.1: Delete the text and substitute: “The equipment shall be in accordance with MIL-E-164O to the extent specified herein.“ Page 3 * 3.2.1: Add after paragraph title: Performance characteristics and RF characteristics shall be verified at the RF interface connector pan
7、el on the rear of the equipment.“ * 3.2.1.4, line 2: Delete “0.1“ and “0.2“ and substitute “0.16“ and “0.44“, respectively. Page 4 * * 3.2.1.11, line 3: Delete “a subpanel visible through the front panel.“ and substitute “the front panel and on a subpanel.“. * 3.2.1.11, line 4: Delete “this“ and sub
8、stitute “the“. 3.2.1.9, line 1: Delete “1.1:l“ and “1.2:l“ and substitute “1.15:l“ and “1.3:1“, respectively. 7 FSC 5820 1 of 6 THIS DOCUMENT CONTAINS k PAGES. -. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-S-2885LI (2) 5 9777906 0355585 O M
9、IL-S-28854( EC) AMENDMENT 2 Page 5 * 3.2.1.13, last sentence: Delete and substitute: “The interlock circuits shall open at least 20 milliseconds (ms) prior to RF switch opening, and shall close after the RF switch closure.“. * 3.2.1.14, line 2: Add “illuminated“ before “green“. * 3.2.1.14, last sent
10、ence: Delete. * * 3.2.1.15, line 3: Delete “be in“ and substitute “operate to“. * 3.2.1.16.1: Delete and substitute: 3.2.1.15, line 1: Delete “Each row of the 5 by 6“ and substitute “Each horizontal row of the“. “3.2.1.16.1 Power cable connector. The input power connector on the equipment shall be a
11、 Type YS3102R14S-7P. to be supplied with the equipment. safety ground lead connected to pin 6, and the AC leads Connected to pins A and C.“. The connector shall mate with a Type MS3106A14S-7S connector with a MS3057-6A clamp The alternating current (AC) power connector shall have the Page 6 * FIGURE
12、 2: Delete and substitute the attached new FIGURE 2. Page 8 “A protective cover shall be provided to protect the * Delete the text and substitute: front panel manual override controls of the RF switch matrix. provide easy access and removal. * * 3.2.3.1, third sentence: Delete and substitute: “Indiv
13、idual RF switching components shall have a 1 ife expectancy of at least 50,000 crosspoint operat ions without maintenance or overhaul. A crosspoint operation shall be defined as a 180 degree crosspoint rotation consisting of the 90 degree rotation from the THRU to TLJRN position to establish an RF c
14、onnection plus the 90 degree rotation from the TURN to THRU position to clear the RF connection.“. * 3.2.4.1, line 2: Delete “0.5“ and substitute “1.0“; line 3: Delete “1.5“ and substitute “2.0“. * 3.2.4.1, last 1 ine: Delete “allows degraded operation.“ and substitute “results in degraded performan
15、ce. II. * 3.2.4.2: Delete. * 3.2.5.2: Delete. 3.2.2.2: The design of the cover shall After “and“ add “a minimum of 2.5 cm (1 in.)“. Gaskets shall not be required for the protective cover.“. 3.2.2.3, line 3: Page 9 * 3.3.1: Delete. * 3.3.1.1, first sentence: Delete and substitute: “All RF connectors
16、utilized in the switching matrix shall be functionally equivalent to Type N as specified in MIL-C-39012.“. * 3.3.1.1, second sentence: Delete and substitute: “Mating connectors for the control, inter- lock, and AC power connectors shall be furnished. MIL-C-28840, interlock connectors shall be in acc
17、ordance with MIL-C-26482, and AC power connectors shall be in accordance with MIL-C-5015. * 3.3.1.2: Delete the text and substitute: “The exterior finish of the equipment shall conform to the requirements of MIL-E-16400. An alternate exterior finish method shall be used only upon approval of the pro
18、curing activity.“. * 3.3.1.3.2, line 4: * 3.3.1.3.2, line 6: installed and the other connector supplied loose.“. Control connectors shall be in accordance with Mating connectors for the RF cables will not be furnished.“. Delete “62.5 cm (25 ft)“ and substitute “13.72-meter (45-foot)“. after last sen
19、tence: Add: “The cable shall be supplied with one connector 2 of 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-28854 (2) 58 W 777770b 0355586 2 W NIL-S-28854( EC) AMENDMENT 2 * 3.3.2: Delete the text and substitute: “The switch matrix and r
20、emote control unit shall be self-compatible and shall conform to the requirements of MIL-STD-461 for Class A5 equipment with the exception that RS03 shall be performed at 10 volts per meter. filters are used to conform to the MIL-STD-461 requirements, the total capacitance shall not exceed 0.1 micro
21、farad (pF) for 60 Hz equipnents. * 3.3.2.1: Delete. If line-to-ground powerline Page 10 * FIGURE 3: Delete. Page 11 * FIGURE 4: Delete Page 12 * 3.3.2.2: Delete and substitute: induced in one It exceed 7 decibels referred to 1 watt (dBW) peak. circuit shall not exceed 7 decibels referred to 1 milliw
22、att (dBm) peak.“. After “3.3.6“, add the following new paragraph: “3.3.7 Controls, indicators, and panel layouts. The design of controls and indicators, and their arrangement on operator and maintainer panels, shall conform to the criteria of MIL-STO-1472 and shall be in accordance with the Controls
23、, indicators and panel layout paragraph of MIL-E-16400.“. “3.3.2.2 Transients caused by keying transmitters and power supply induced noise. Transients In addition, power supply related noise induced into any PAGE 13 * TABLE II: Delete “Parts control“ entry in its entirety. * TABLE II: After “Charact
24、eristic impedance“: “VSWR“: Add “X“ in “Group A“ column. * TABLE II: After Isolation“: Delete “VSWR“ entry in its entirety. * TABLE II: Delete “Airborne and structureborne noise“ entry in its entirety. * TABLE II: “Enclosure“: Add “X“ in “First article inspection column. Page 16 4.5.2.2, second sent
25、ence: Delete and substitute “The number of cycles required shall be 10 cycles.“ and in line 7, after “failure-free.“ insert the following new sentence: “When performance measurements are required, a functional operating test shall be performed.“. Page 17 TABLE III: Delete. * After 4.5.5, add the fol
26、lowing new paragraphs: “4.5.5.1 in and 50 ohms out, a transnitter at full power in an adjacent circuit shall be manually keyed on and off. excess of the limit specified in 3.3.2.2. the frequency bands intended for use. display power supply related noise (harmonics and so forth) in excess of the limi
27、t specified in 3.3.2.2. I . Induced transients due to keying test. With one circuit passively loaded 50 ohms This shall be performed with a transmitter in each of The passive circuit, monitored with an oscilloscope, shall not display a response in “4.5.5.2 Power supply induced noise. The passively l
28、oaded circuit of 4.5.5.1 shall not 3 of 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-28854 (2) 58 M 777770b 0155587 4 m MIL-S-28854( EC) NIENDMENT 2 * 4.6: Delete the text and substitute: “Reliability testing shall be performed in accordan
29、ce with i4IL-STD-781 Test Plan IVC. Test temperature shall be maintained at 50C. be as specified in the Combined environments for shipboard equipment paragraph of MIL-STD-781. The period of vibration, equipment duty cycle, and AC line voltage shall be as shown in FIGURE 8. The operational duty cycle
30、 shall be 20 crosspoint switching operations per 24-hour period. Each crosspoiit shall be sequentially operated from the THRU to TURN position and then from the TURN to THRU position and the proper operation of each crosspoint shall be verified for each position by monitoring the corresponding indic
31、ator and interlock circuits. Vibration stress shall * 4.7.1, line 3: After liictll add “and Mmaxctl. * 4.7.3: Uelete. * Add the atached new FIGURE 8. nodifications, corrections, deletions) froin the previous amendment were made. This was done as a convenience only and the Government assumes no 1 iab
32、il ity 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. The margins of this amendment are marked
33、with an asterisk to indicate where changes (additions, Preparing activity: (Project 5820-N777) NAVY - E C 4 of 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-2885Ll (2) 58 W 777770b 0155588 b M MIL-S-28854( EC) AMENDMENT 2 P P -x- )COL I SAT
34、COY )COL I XUIT )COL I UHF KEYLINE )COL 2 SATCOY )COL 2 XYIT )COL7 HF KEYLINE )COL 2 UHF KEYLIWE )COL 3 SATCCY )COL 8 HF KEYLINE )COL 3 XMIT I )COL 3 UHF KEYLINE E )COL 4 SATCOM )COL 9 HF IEYLINE )COL 4 xu11 )COL 5 SATCOY UX“ NOTES : 1. HF KEYLINE CONNECTS TO PINS G AND H OF Jll SINCE COLUMN 5 IS NO
35、T SPLIT 2. PIN J, K, AND L IN CONNECTORS J1 THROUGH J11 ARE SPARE AND ARE NOT SHOWN 3. INDICATES INTERLOCK CIRCUIT SWITCHING FIGURE 2. Switch matrix interlock control switching. 5 of 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-2885LI (2)
36、58 7777706 0355587 125 V 115 105 ON OFF OTY CY VI8 ffMP soot MIL-S-28854( EC) AMENDMENT 2 li III III l!i VIBR TEST TIME , HRS FIGURE 8. Test parameters for conducting reliability demonstration. i : us. GOVERNMENT PRINTING OFFICE: 1984-705-040.A2340 6 of 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
