1、MIL-T-L77C 49 W 7999906 025662Lt 7 W - MIL-T-81778C (AS) 11 July 1977 Superseding MIi-T-81778B (AS) 6 December 1974 MILITARY SPECIFICATION TEST STATION, LOW FREQUENCY 05-215( )/AWM-23(V) and 05-379( )/AWM-23(V) This specification has been approved by the Naval Air Systems.Command, Department of the
2、Navy 1. SCOPE 1.1 Scope. This Specification covers the performance, design, and test require= for the Low Frequency Test Station (LFTS) OJ-215( )/AWM-23(V) and 05-379( )/AWM-23(V) (see 6.9). 1.2. Classification. The LFTS consists of a 3-bay station, an antenna mount- ing stand, and accessories as fo
3、llows (see 6.4): a. Bay No. 1: Console, Test, Low Frequency, Receiver-Amplifier 05-253( )/AWM-23(V). Reference Nomenclature Paragraph I Panel, Power Distribution Counter/Timer Digital Multimeter Monitor, Coordinate Data Frequency Response Analyzer Panel, Coolant Supply Mounting MT-4502 ( )/AiM-23(V)
4、 Power Supply PP-6850( )/AWM-23(V) Power Supply, DC Distribution Ex SB-3696( )/AWM-23(V) ID- 1861 ( ) /AWM-23 (V) MX-9307 ( ) /AWM- 23 (V) 5-3110( )/AVM-23(V) . 3.6.1.1 3.6.1.2 3.6.1.3 3.6.1.4 3.6.1.5 3.6.1.6 3.6.1.7 3.6.1.8 3.6.1.9 3.6. i. io Beneficial comments (recommendations, additions, deletio
5、ns) and any perti- nent data which may be of use in improving this document should be addressed to: Engineering Specifications and Standards Department (Code 93) Naval Air Engineering Center, Lakehurst, NJ 08733, by using self-addressed Standardi- zation Document Improvement Proposal (DD Form 1426)
6、appearing at the end of this document or by letter. - 1- FSC 4935. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-L77C 47 7779906 025b625 7 MIL-T-81778C (AS) b. Bay No. 2: Console, Test, Low Frequency, Antenna 05-254( )/AWM-23(V)* and 05-380(
7、)/AWM-23(V)* Nomen cl at ur e Ref er ence Paragraph (1) Oscilloscope 3.6.2.1 (2) Panel , Test , Electrical 3.6.2.2 . (3) Switching Unit, Fault Isolation 3.6.2.3 (4) Switching Unit, Fault Isolation 3.6.2.4 C-9179( )/AWM-23(V) SA- 1895 ( ) /AWM-23 (V) SA- 1896 ( ) /AWM-23 (V) * or SA- 2086 ( ) /AWM-23
8、 (V) * * Part of 05-215( )/AWM-23(V) only. * Part of 05-379( )/AWM-23(V) only. c. Bay No. 3: Console, Test, Low Frequency, Power Supply OJ- 2 55 ( ) /Am- 2 3 (V) Nomenclature . Spectrum Analyzer Switching Unit, Fault Isolation Panel, Coolant Supply Mounting MT-4503( )/AWM-23(V) Dmiiy Load, Electrica
9、l Dummy Load, Electrical SA- 1897 ( ) /AM43 (V) MX-9308 ( ) /AWM-23 (V) DA- 631 ( ) /AWM- 23 (V) DA-632 ( )/AWM-23 (V) d. Stand,. Mounting, Antenna MT-4445 ( ) /AWM-23 (V) e. Accessories - LFTS (1) Extenders - LFTS (2) Fixture, Pressure Leakage - Test (3) Fixture, Receiver/Refrigerator . Cryogenic-I
10、nfrared* . (4) Fixture, Antenna Servo (5) Fixture, Refrigerator,Test* (6) Equipment, Helium Filling“ * Used with 05-215( )/AWM-Z3(V) only. Ref er ence Paragraph 3.6.3.1 3.6.3.2 3.6.3.3 3.6.3.4 3.6.3.5 3.6.3.5 3.6.4 3.6.5 3.6.5.1 3.6.5.2 3.6.5.3 3.6.5.4 3.6.5.5 3.6.5.6 1.3 Associated equipment. The L
11、FTS shall operate with the following associated equipment (see 6.4): -2- i Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-L77C LI7 = 7977706 0256626 O W MI L-T-8 1778C (AS) .3 Ei a. Target Simulator, Infrared SM-630( )/AWM-23(V)* b. Kit, Tool,
12、 Special TK-222( )/AWM-23(V) c. Adapter, Handling, Antenna MX-9046( )/AWM-23(V) d. Cooler, Liquid, Electronic Equipment HD-957( )/AWM-23(V) e. Service Set, Hydraulic System MX-9043( )/AWM-23(V) f. Stand, Fill-Drain, Coolant System MT-4730( )/AWM-23(V) g. Test Set, Antenna, Boresight TS-3568( )/AWM-2
13、3(V) * Used with OJ-215( )/AWM-23(V) only. 2. APPLICABLE DOCUMENTS 2.1 General. The following documents, of the issue specified in AS-4053, Applicable Document List for AWCS Test Set AN/AWM-23(V), form a part of this specification to the extent specified herein. 81734(AS) shall be the applicable gen
14、eral specification for the LFTS de- scribed herein (see 6.6). MIL-T- SPECIFICATIONS Mil it ary MIL-M-7793 MI L-T-8 1734 (AS) STANDARDS 2 i% Mil itarv MIL-STD-461 PUBLICATIONS Hughes Aircraft Company 3282206 Meter, Time Totalizing Test Set, Airborne Weapon Control System AN/AvM-23(V) Electromagnetic
15、Interference Characteristics Requirements for Equipment Acceptance Test Procedure, Low Frequency Test Station 2.2 Availability of documents. Applicable (see 6.6). 2.3 Precedence of documents. When the requirements of .the contract, this specification, or applicable subsidiary documents are in confli
16、ct, the following precedence shall apply: . a. b. c. Contract - the contract shall have precedence over any other document. This specification - This specification shall have precedence over all applicable subsidiary documents (see 6.6). Reference documents - Any document referenced in this specific
17、ation shall have precedence over all applicable documents referenced therein. 3. REQUIREMENTS -3- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-T-8177C 47 m 777770b 0256627 2 3.1 Materials, parts, and processes. Applicable. 3.2 Design and cons
18、truction. Applicable except as follows. 3.2.1 Design features. Applicable except as follows. 3.2.1.1 Method ofoperation. Applicable. 3.2.1.2 Commercial test equipment. Applicable. 3.2.1.2.1 Other commercial components. Applicable. 3,2.1.3 Circuit grounds. Applicable. . 3.2.1.4 Interchangeability. Ap
19、plicable. -. . -. -. , I . . . : . -%. . . * 3.2.1.5 Identification of product. Applicable. 3.2.1.6 Human factors. Applicable. . . . :, *- T.- :i I .i .:-.-, *L . .,- -,: *., . : 3.2.1.7 Test set generated acoustic noise. Applicable. 3.2.1.8 Forced-liquid coolina. Applicable, except that the flow ra
20、te . shall be 2.5 gallons per minute, maximum. . . . . *- 3.2.1.9 Space and weight limitations. The LFTS shall occupy less than The weight of the LFTS.shal1 be less than Maximum dimensions of the LFTS, ex- 47.5 square feet of deck area. 3800 pounds including antenna stand. cluding the antenna mounti
21、ng stand and including the WRA mounting surfaces, shall be 73 inches by 48 inches by 75 inches with all drawers in the retracted position. inches by SO inches by 53 inches, including an acoustic cover. Maximum dimensions for the antenna mounting stand shall be SO . 3.2.1.9.1 Storage space. All items
22、 which are not permanently attached to the LFTS will be stored in separate storage facilities. feet.of storage space for the 05-215( )/AWM-23(V) LFTS and 5 cubic feet of storage space for the W-379( )/AWM-23(V) LFTS will be required to store fix- tures, test adapters, cables, manuals, and miscellane
23、ous equipment. . A minimum of 12 cubic 3.2.1.10 Connectors. Applicable. 3.2.1.11 Secondary electrical power. The total secondary electrical power _ shall be limited to 1600 watts maximum with any combination of power form loading within the load capability limits for each power form listed in Table.
24、 - . I. . * .: 3.2.1.11.1 Secondary power, semi-regulated. Secondary semi-regulated power forms shall be provided by power supplies which are part of the LFTS. forms from 10 percent to full load and for normal values of utility line Power , voltage variations shall be as listed in Table I. 3.2.1.11.
25、2 Secondary power, regulated voltages. Secondary regulated elec- trical power forms shall be provided by power supplies which are part of the -4- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-81778C 49 399990b 025bb28.q MI L-T- 81 778C (As) T
26、ABLE I SECONDARY POWER FON, SEMI-REGULATED - 5- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-L77C 49 99979Ob 0256629 b m- MIL-,T-81778C (AS) LFTS. Regulation from no load to full load, and for normal values of facility line voltage variation
27、s shall not exceed 2 percent. Ripple voltage for direct current (dc) power forms shall not exceed 150 millivolts (mV) peak-to-peak (p-p). The power forms listed in Table II shall.be provided. 3.2.1.12 Interface. The LFTS shall provide the interfaces specified in the following. 3.2.1.12.1 Liquid cool
28、er interface. The LFTS shall interface with Cooler, Liquid, Electronic Equipment HD-957( )/AWM-23(V) through coolant lines which enter the LFTS at the top of bay no. 1. 3.2.1.12.2 Clean air interface. The LFTS shall interface with the clean air through ducts which enter the LFTS at the top rear of e
29、ach test console. 3.2.1.12.3 Electrical power interface. The LFTS shall interface with electrical power for the convenience outlets at one end of the convenience outlet strip mounteu on the top of the front face of the LFTS. The LFTS shall interface with all other electrical power through power line
30、s entering the top of bay number 1. 3.2.2 Utilities. Applicable. 3.2.2.1 Electrical power. Applicable. Electrical power required for operation of the LFTS shall be as listed in Table III. TABLE II SECONDARY POWER FORMS, REGULATED Item 1 2 3 -4 5 6 7 8 Power Form +5 Vdc +12 Vdc +25 Vdc +50 Vdc -12 Vd
31、c -25 Vdc -50 Vdc 104 Vac root mean square (rms) -f 3 percent, 400 Hz f 3 percent Load Capacity (amperes) * 20. o O. 8 3.0 3.5 0.3 0.5 3. O 0.2 rms * The regulated secondary power voltage load currents are part of the load capacity specified in 3.2.1.11.1 - 6- Provided by IHSNot for ResaleNo reprodu
32、ction or networking permitted without license from IHS-,-,- MIL-T-81778C 47 777770b 0256630 2 W Item 1 2 3 4 TABLE III LFTS ELECTRICAL POWER Input Power Form MIL-T-81778C (AS) +29 f 4 Vdc 115 Vac, 400 Hertz (Hz) , 3-phase, 4-wire, Type III 115 Vac, 60 Hz, I-phase, Type I 115 Vac, 60 Hz, 3-phase, 3-w
33、ire, ungrounded, . Type I Maximum Load 0.6 klowatt (kW) 9. O kilovolt .Amperes (kVA) 1.75 kVA 4.4 kVA 3.2.2.2 Clean air. Applicable. The LFTS requirements for clean air shall not exceed 45 pounds per minute. 3.2.2.3 Potable water. Not applicable. 3.2.2.4 Liquid coolant. Applicable. 3.2.2.5 Helium. u
34、tility line. Applicable. * Provisions shall be made for connection to a 3.2.2.6 Nitrogen. Applicable. 3.2.2.7 Hydraulic fluid. Applicable. 3.2.3 Service conditions. 3.2.3.1 Electrical. Applicable. Electrical power required for operation of the LFTS shall be as listed in Table III. 3.2.3.2 Environmen
35、tal. Applicable. 3.2.3.2.1 Organizational level. Not applicable. 3.2.3.2.2 Intermediate level. Applicable. 3.2.4 Maintainability. Applicable except as follows. 3.2.4.1 Mean time to repair. Applicable. * Used with 05-215( )/AWM-23(V) only. - 7- Provided by IHSNot for ResaleNo reproduction or networki
36、ng permitted without license from IHS-,-,-MIL-T-BL778C 47 7779706 025bb3L 4 MIL-T-81778C (As) ., 4- 3.2.4.2 Test points. Applicable. Test points shall be provided to facilitate fault isolation to the SRA level, fault isolation within an SRA, alignments or adjustments, calibration, and signal monitor
37、ing. bility of test points shall be dictated by consideration of ease of mainte- nance and repair. Location and accessi- 3.2.4.3 Shop replaceable assemblies (SRA). Applicable. 3.2.4.4 Self test capabilities. The LFTS shall provide capability to establish its functional readiness. exceed 30 minutes.
38、In the event of a self test failure indication, the LFTS shall provide the capability to isolate faults to: Time required for self test shall not a. The instrument level for commercial test equipment. b. The SRA level for peculiar equipment. 3.2.5 Reliability. The mean time between.failures shall be
39、 125 hours minimum. 3.2.5.1 Operating life. Applicable. 3.2.5.2 Storage life. Applicable. 3.2.5.3 Jperational stability. Applicable. 3.2.6 Electromagnetic interference (EM). Applicable, with the following exceptions: . b. c. MIL-STD-461, tests CEO1, RSO1, RS02-2, and RS04 shall not apply. MIL-STD-46
40、1, tests CE03 and RS02-1 and the limits therein shall MIL-STD-461, tests CE02 and CE04 shall apply whenever power re- mote coiitrol leads external to the station are used. apply. 3.2.7 Utilities protection. Applicable. 3.2.7.1 Liquid cooling protection. Applicable, except that test station protectio
41、n shall be provided or an out of tolerance flow rate only. 3.2.7.2 Clean air protection. Applicable. 3.2.7.3 Electrical power protection. Applicable. 3.2.7.3.1 Secondary voltage protection. Occurrence of an out-of-tolerance secondary voltage condition that could damage either an item under test or t
42、he test station shall result in automatic shutdown of the secondary power forms. by an appropriate indicator. Operator action shall be required to reinstate test station operation after the occurrence of automatic shutdown. The out-of-tolerance condition leading to shutdown shall be identified 3.9.7
43、.3.2 Emergency shutdown switches. Emergency shutdown switches shall be provided for use by the operator. When an emergency shutdown switch is -8 - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-8 1778C (AS) activated, the load side of all LFTS
44、 primary circuit breakers shall be discon- nected from the respective loads. shall be of the pushbutton-activated, momentary type with the pushbutton finished in red. with alternating orange-yellow and black stripes. located on the LFTS in an area which is easily accessible to the operator during no
45、rmal operation and another switch shall be located on the antenna mounting stand. The switches utilized for this application The front panel area around the pushbutton shall be marked A switch shall be centrally 3.2.8 Calibration cycle. Applicable. 3.2.9 Power switching and coolant control. The LFTS
46、 shall provide the necessary switching to control power forms of 3.2.2 and baffling as required or control of coolants of 3.2.2. 3.2.10 Displays. -Visual displays shall provide an indication of the eest status of the unit under test and the LFTS. 3.3 Performance. 3-.3.1 General. The LFTS shall provi
47、de the capability to test and maintain the equipment listed in Table IV. 3.3.2 OG. Not applicable. TABLE IV WRAs MAINTAINED AT THE LFTS Item 1 2 3 4 5 .6 7 8 WRA Nomenclature (See 6.4) Antenna AS-2764( )/AVG-9 Servo Electronic Subassembly (Part of AS-2764( )/AWG-9) Control, Antenna - Test C-9038( )/
48、AWG-9 and C-10036( )/ Receiver, Infrared R- 1786( )/AWG-9* Processor, Data CV-2947 ( )/AiVG-9* Power Supply PP-6773( )/AWG-9 Power Supply PP-6774 ( ) /AWG-9 Power Supply PP-7010( )/AWG-9 and PP-7042( )/AiVG-9 AWG- 9 * Tested on 05-215( )/AWM-23(V) only. Provided by IHSNot for ResaleNo reproduction o
49、r networking permitted without license from IHS-,-,-MIL-T-L77C 47 a 7779706 0256633 3.3.3 Intermediate level functional requirements. Applicable. 3.3.4 Warmup time. Applicable. 3.4 Detailed functional requirements. 3.4.1 Test capabilities. The LFTS shall provide and control the stimuli, the pcwer forms, and the loads required to perform functional and dra
