1、f MIL-C-237bA 58 7777706 0352552 3 W MIL-C-23768A (As) 1 May 1970 Superseding 15 February 1961 MIL-C-23768 (WP) - rnrnL, m.?lGRATED E3xmmNIc CENTRAL C-4 85 O/ASQ-8 5 This specification has been approved by the Naval Air Systenr; CBMnarid, Deparhznt of the Navy. 1. SCDPE 1.1 *ape-% equipmnt r covered
2、 by this specification shall provide control of tk UHF comminications, UHF auxiliary receiver, the UHF ADF equiprent specified in 6.7. the UBF Data Link Codcations, Digital Data ccamaini cations Set and 1.2 Associated Equl pmnt - This equiFarient shall operate with the associated equipment listed in
3、 6.7. 2. APPLr-m 2.1 General - The documrnts listed in- 6.8 of the issue in effect on the date of invitation for bids form a part of this specifics- tim to the extent specified herein: 3. REQUIREMENTS 3.1 Preproduction - This specification makes provision for preprcduction testing. * 3.2 mterials, f
4、ulfillment of mjor design objectives shall be the prim cansideration. Specification MIL-E-5400. parts and Materials - in the selection of parts and Parts and mterials -ts shall conform to *3.2.1 Nonstandard Parts and Materials -roa - Approval for the use of nonstandard parts and materials shall be o
5、btained as outlined in Specification MIL-E-5400. FSC 5895 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIIrC-23768A (AS) 3.3 Desiqn an Constmction - DE equipwnt shall conform with all the applicable requirementsofSpecification MIL-E-5400 for desig
6、n, construction an mrkmnship, except as otherwise specified herein. 3.3.1 Total Wei% - The total weight of the equiyxnent, excludins cables, shall be a minimum consistent with good design and 3.3.2 Reliability 3.3.2.1 Operational Stability - The qipnent shall operate with satisfactory perfo-e, conti
7、nuously or intermittently for a period of at least 1000 hours witbut the necessity for readjustment of controls which are inaccessible to the operator during riomial use. 3.3.2.2 Operating Life - The equipnent shall have total opex- ating life of 3000 burs with reasonable sewichg and replac-t of par
8、ts. contractor. Parts requiring scheduled replacenient shall be specified by the 3.3.3 Cabling and Connections - 3.3.3.1 Cables and Connectors - !The equi-t shall provide for the use of cables and connectors in accordance with Specification MIL-E-5400. 3.3.3.2 Lnterconnection Cabling - The equiprent
9、 shail be capable of satisfactory operation using extemal wiring in accordance with the applicable rquirenmts of Specification MIM-5088. external wiring chal1 be unshielded, except that a minimmi number of the individual wires my be shielded when denionstrated as necessary to met interference contro
10、l requirarwonts and provided the assepnbly of the cable to its plugs my be easily accqlished. portion of the connectors attached to the cables shall not be supplied as part of the equipnent. The External cables and that 3.3.4 Control Panels - The control panel shall confonn to the applicable require
11、ments of Specification Muic-6781. ation of the control panel must be apprwd by the procuring activity prior to preprcduction testing. The Configur- *3.3.5 intexchangeability - The equipwnt shall meet the interchangeability requirerrients of Specification -E-5400. 3.3.6 interferace Control - The gene
12、ration of radio inter- ference by the equipnent and the vulnerability of the quiprent to radio interference shall be controlled within the limitsof Specification -1-6181. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-23768A 58 9999906 0352554
13、 7 9 MIM-23768A (AS) 3.3.7 W.ntenance ProUisions an3 Field Testinq - Provisions for mintaxmce shall be as specified in ,pecification MIL-E-5400. Specific test pints an test facilities shall be prcnrided to the greatest mt practicable fur ease of field testing ard mintename. 3.3.8 Nanienclature and N
14、anieplates - Ncxwnclature assigrnrient and =plate apprwal for pmt identification shall be in accord- ance with Specification MuiN-18307. Standard Conditions - The following corditions shall be used to establish riormai iserfon-GE-e characteristics under standard 3.3.9 ccmditia and for rriaking labor
15、atory bench tests. Temperature Vibration None Humidity Input pmer voltage Rcm ambient (25OC - +5OC) Roopn ambient up to 90% relative humidity 5.0 VAC - +2.0% and 27.5 - M.5 Altitude Nomial grod m 3.3.10 service conditions - The equiprent shall operate satisfactorily under any of the envirormiental s
16、ervice conditions or reasonable combination of these conditions as specified in specifica- tion -E-5400 for Class A pent, except as mdified herein: 3.3.10.1 Vibration - The equipmnt shall operate satisfactorily when subjected to the vilration requirerrients of Curve I of MIGT-5422E (Figure 2) as lim
17、ited by Curve III (5G maXirmm acceleration). 3.3.11 kJarm-up Time - There shall be no warm-up timt required. 3.3.12 pri.rilary input power Requirmts - The equipt shall meet all applicable requirmts of MIGSTD-704 and shall give specified Perfmce frm the following power sources with characteristics as
18、 defined in MIL-STD-704 having limits as specified therein. required shall riot exceed the specified munts. The power (1) AC Po= (Single Phase) 5.0V, Category “B“ 14 VA (2) D.C. Fcmx, 28V, Category “B“, 0.1 Amp. waded Perfomce - Degrade3 perforniance will be 3.3.12.1 permitted for voltage transients
19、 not exceeding 0.5 second during mnnal electric system operation. resulting damage to the equipent. pration shall return to noml with no 3.4 Performme 3.4.1 The pent shall be of the Console type in accord- ance with Specification MIL-C-6781, unless otherwise specified herein, and shall furnish the f
20、ollawing reqyirmts. I 3 - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-23768A 58 706 0352555 7 m MIL-C-23768A (AS) *3.4.1.1 Emction - The equiprent shall provide control of the following equipnts to th= extent so specified. (1) UHF - cations
21、 (W/=-51A) - it shall be possible to select mually any of the 3,500 frequencies available on . this ED) for disabling the squelch circuits within the UHF ccannunications (NUN) and for adjusting the amplitude of the audio signals delivered to the output circuit by tIy- UHF cannumications (MUN). (4) A
22、 dual concentric control (VOUIME-SQUEICEI (5) A five position rotary switch (MAIN-AWILIARY) for selecting tk de of transmission and reception of the AN/ARc-51A and auxiliary receiver AN/ARR-69 as follows: AN/ARc-5lA AN/ARR-69 OFF T/R TRSG ADF ADF OFF ADF ADF CMD G (6) A twenty position lzhmhheel swi
23、tch (AUX CHANNEL) for selecting any one of the mty UHF auxiliary receiver channels. (7) A dual concentric control (AUX VLdl?J?/S) for cantrolling the application of the audio output of the receiver for external use, (OFF) and the adjusting the anplitude (VOL) of the audio signals delivered to the ou
24、tput circuit by the UHF auxiliary receiver, (SENS) of tt.ie auxiliary receiver. auxiliary in addition, it shall be capable of contmlling tk sensitivity (8) A three position toggle switch shall permit auto- mtic or manual selection of either of the tw “ antennas for voice reception and transmission.
25、*3.4.1.4.2 UHF Data Link c!cmnun cations (AN/ARC-124) (1) Three thmeels (MAN FREQ) for manuaiiy seect- ing any one of the 3,500 available frequencies on thz UHF. Data Link clzmnmications. 5 . u Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-23
26、76824 (AS) (2) A twnty position row switch (DATA LINK CHANNEL) for selecting any of 19 predetermined frequencies on tbe UHF mtaLink(.xXmml cations, or a mual position on which any of the 3,500 available frequencies can be selected. “3.4.1.4.3 Digital Data Coanmuni cation AN/ASW-27 (1) A dual Concent
27、ric eight position rotary switch for selection of 64 octal coed addresses for the Data Catmumications Systems AN/ASW-27. (2) A three position lever-locked toggle switch labeled llReplyll for controlling Data Link Reply status. ition shall be labeled “NORM“ and the ttyo lever-locked positions shall b
28、e labeled “CAPEEL and lEyRcED1l. The center pos- (3) A tim position toggle switch labeled “ANTIJAM“ Abbreviations for the positions of in addition to the signal required, with the T“ position lever-locked. the switch shall be “CN“ and “OFF“. the “CW position of this switch shall provide for th auxil
29、iary equilmnent simultaneously with tk selection of “ON“. on switching for (4) A position (a OFF) switch for pw=r to the m/AFC-124 , AN/ASW-27, and Data Link Auxiliary Fqp-ent. (5) A tm position toggle Switch to pennit selection of either of two “ antennae for data link reception and transmission. 3
30、.4.1.5 Controls, Intemal - provisions shall be made for * changing the preset frequencies on the respective mry drums of the UHF by rming the unit fram nod installation. of the unit will provide access to the frequency drums for presetting fre- quencies. Prwvisims shall be made to provide Switching
31、of the attenuated audio output of the AN/ARC-SIA and AN/ARR-69 for antenna selection when tk UHF ccmmrnications is in T/R or T/Rffi. is in the T/R - ADF or T/RK; ADF position the cmrnunications antenna shall unattenuated output of the AN/ARR-69 shall be switched to tk sare pin of the output me-2 37
32、6 8A (AS) wwt shall be turnnnber and date of this specification. (2) Selection of applicable levels of packaging and packing (see 5.1). *6.7 with the following associated equipmt which shall not be supplied as part of the equipment: Associated qui prmt - The equipcnt shall operate Radio Set m/ARC-53
33、.A Radio EktAN/ARC-124 Receiver, Radio m/m-69 ANARA-5 O Carmninications Set, Digital Data AN/ASw-27 FYequency/Charwl indicator ID-758/ARC (2 each) 15 .- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIM-23768A (AS) *6.8 Applicable hcumnts - SPECIFI
34、cATIrnS Military MTL-W-5 O 8 8 Wiring; Aircraft, installation of MIL-E-5400 MIL-I-5422 MIL-6781 MIL-P-7788 MIL-E-17 5 55 MIL-“-18303 MIL-N-18307 MIM-226 70 LsTAM3bRIxc Military MIL-STD-704 Electronic Equiprent, Aircraft, General Specification for %=sting, Envixmtai, Aircraft Electronic Equipsnent in
35、terference Control Rqubmm ts, Aircraft wp-rmt Control Panel: Aircraft Equip- mt, Rack or Console Wunted Plate, plastic, Lighting Electronic and Electrical Equip- rtient and Associated Reparr Parts, Preparation for Delivery of Test Prcceures ; Preproduction and Inspection, for Aircraft Electronic Equ
36、i2=srient, Format for Ncmnclature and Nameplates for Aeronautical Electronic and Associated Indicator, nequency Channel ID-758/ARC; Pxnting MF2141/ARC and Switching nit SA-629/ARC Electric Power, Characteristics of 16 /,- Aircraft, an Utilization o Provided by IHSNot for ResaleNo reproduction or net
37、working permitted without license from IHS-,-,-MIL-C-23768A 58 7797706 0352568 7 m MIM-23768A (AS) %.9 Availability of Docmsnts - (1) Fbien requested specifications, standards, draw- ings, and publications refer to both title and number. Copies of this specification and applicable specificatians req
38、uired by contractors in Cannection with specific proCuremnt functions my be obtained upon application to the (Xxmmfh * g officer, Publications and Formt center, code 105, 5801 Tabor Amue, Philadelphia, Pennsylvania. * 6.10 Revisions - in specification revisions and super- seding -ts an asterisk “*“
39、preceding a paragraph number denotes paxagraphs in which changes have been me frm the previous issue. is has been done as a convenience only and the Govesllrrent assms no liability hatscever for any inaccuracies in these notations. Bidders and contractors are caution-n13 17 /, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-2376A 58 m 9777906 0152569 9 W M VOLUME 18 - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
