Marconi_2305_Service_Manual 电路图.pdf

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1、TM 11-6625-3146-14 TECHNICAL MANUAL OPERATORS, ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL FOR MODULATION METER ME-505A/U (MARCONI INSTRUMENTS, MODEL 2305) (NSN 6625-01-154-4844) This copy is a reprint which includes current pages from Change 1, HEADQUARTERS, DEPARTMENT OF

2、 THE ARMY DECEMBER 1985 RadioFans.CN 收音机爱 好者资料库 TM 11-6625-3146-14 C 1 CHANGEHEADQUARTERS DEPARTMENT OF THE APRMY No. 1Washington DC, 15 June 1987 OPERATORIS, ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL MODULATION METER, ME-505A/U (MARCONI INSTRUMENTS MODEL 2305) (NSN 6625-

3、01-154-4844) TM 11-6625-3146-14, 26 December 1985, is changed as follows: 1. Insert print date of 26 December 1985, on the front cover of the manual. 2. Remove old pages and insert new pages as indicated below. New or changed material is indicated by a vertical bar in the margin of the page. Added o

4、r revised illustrations are indicated by a vertical bar adjacent to the identification number. RemoveInsert i through ivi through iv 1-3 and 1-41-3 and 1-4 1-11 through 1-161-11 through 1-16 2-1 and 2-22-1 and 2-2 3-1 and 3-23-1 and 3-2 3-5 and 3-63-5 and 3-6 3-9 and 3-103-9 and 3-10 3-17 and 3-183-

5、17 and 3-18 3-27 and 3-283-27 and 3-28 4-1 and 4-24-1 and 4-2 4-7 and 4-84-7 and 4-8 4-11 and 4-124-11 and 4-12 4-31 through 4-444-31 through 4-44 4-47 through 4-524-47 through 4-52 5-3 through 5-65-3 through 5-6 None5-6.1/(5-6.2 blank) 5-17 and 5-185-17/(5-18 blank) 5-43 and 5-445-43 and 5-44 B-5 t

6、hrough B-8B-5 through B-8 NoneFigure FO-25 3. File this change sheet in front of the publication for reference purposes. Distribution authorized to the Department of Defense mnd DOD contractors only for official use or for administration or operational purposes. This determination was mode on 17 Feb

7、ruary 1987. Other requests for this document will be referred to Commander, US Army Communications- Electronics Command and Fort Monmouth, ATTN: AMSEIL- ME-P, Fort Monmouth, NJ 07703-5000. DESTRUCTION NOTICE-Destroy by any method that will prevent disclosure of contents or reconstruction of the docu

8、ment. RadioFans.CN 收音机爱 好者资料库 By Order of the Secretary of the Army: JOHN A. WICKHAM, JR. General, United States Army Official: Chief of Staff R.L. DILWORTH Brigadier General, United States Army The Adjutant General DISTRIBUTION: To be distributed in accordance with DA Form 12-36 literature requirem

9、ents for ME-505/U. RadioFans.CN 收音机爱 好者资料库 TM 11-6625-3146-14 A TM 11-6625-3146-14 WARNING HIGH VOLTAGE is used in the operation of this equipment. DEATH ON CONTACT may result if personnel fail to observe safety precautions. Know the areas in this equipment containing high voltage. Be careful not to

10、 come in contact with the high voltage connections during operation of this equipment. Do not be misled by the term Low Voltage. Potentials as low as 25 volts may cause death under adverse conditions. WARNING FLAMMABLE SOLVENTS are used in the maintenance of this equipment. Adequate ventilation shou

11、ld be provided while using isopropyl alcohol. Prolonged breathing of the vapor should be avoided. The solvent is not to be used near heat, sparks, or open flames; it is highly flammable. Since isopropyl alcohol dissolves natural oils, prolonged contact with skin should be avoided. When necessary, us

12、e gloves which are solvent-resistant. If the solvent is taken internally, consult a physician immediately. WARNING COMPRESSED AIR is used in the maintenance of this equipment. When used for cleaning, the compressed air source must limit nozzle pressure to no more than 29 pounds per square inch (PSIG

13、). Goggles must be worn when cleaning with compressed air. WARNING Adequate ventilation should be provided while using TRICHLOROTRIFLUOROETHANE. Prolonged breathing of vapor should be avoided. The solvent should not be used near heat or open flame; the products of decomposition are toxic and irritat

14、ing. Since TRICHLOROTRIFLUOROETHANE dissolves natural oils, prolonged contact with skin should be avoided. When necessary, use gloves which the solvent cannot penetrate. If the solvent is taken internally, consult a physician immediately. WARNING TOXIC HAZARD: Many of the electronic components used

15、in this equipment employ resins and other chemicals which give off toxic fumes on incineration. Appropriate precautions should therefore be taken in the disposal of these items. B TM 11-6625-3146-14 ESD CLASS 1 NOTE The symbol for static sensitive devices in military inventory is as depicted in the

16、caution block above. The symbol used in this authenticated manual is GENERAL HANDLING PROCEDURES FOR ESDS ITEMS USE WRIST GROUND STRAPS OR PERIODICALLY CHECK CONTINUITY AND MANUAL GROUNDING PROCEDURESRESISTANCE OF GROUNDING SYSTEM KEEP ESDS ITEMS IN PROTECTIVE USE ONLY METALIZED SOLDER SUCKERS COVER

17、ING WHEN NOT IN USE HANDLE ESDS ITEMS ONLY IN PROTECTED GROUND ALL ELECTRICAL TOOLSAREAS AND TEST EQUIPMENT MANUAL GROUNDING PROCEDURES MAKE CERTAIN EQUIPMENT IS TOUCH PACKAGE OF REPLACEMENTS ESDS POWERED DOWNITEM TO GROUND BEFORE OPENING TOUCH GROUND PRIOR TO TOUCH GROUND PRIOR TO INSERTING REMOVIN

18、G ESDS ITEMSREPLACEMENT ESDS ITEMS ESD PROTECTIVE PACKAGING AND LABELING INTIMATE COVERING OF ANTISTATIC MATERIAL WITH AN OUTER WRAP OF EITHER TYPE 1 ALUMINIZED MATERIAL OR CONDUCTIVE PLASTIC FILM - OR -HYBRID LAMINATED BAGS HAVING AN INTERIOR OF ANTISTATIC MATERIAL WITH AN OUTER METALIZED LAYER LAB

19、EL WITH SENSITIVE ELECTRONIC SYMBOL AND CAUTION NOTE C TM 11-6625-3146-14 CAUTION Devices such as CMOS, NMOS, MNOS, VMOS, HMOS, thin-film resistors PMOS, and MOSFET used in many equipments can be damaged by static voltages present in most repair facilities. Most of the components contain internal ga

20、te protection circuits that are partially effective, but sound maintenance practice and the cost of equipment failure in time and money dictate careful handling of all electrostatic sensitive components. The following precautions should be observed when handling all electrostatic sensitive component

21、s and units containing such components. CAUTION Failure to observe all of these precautions can cause permanent damage to the electrostatic sensitive device. This damage can cause the device to fail immediately or at a later date when exposed to an adverse environment. STEP 1 Turn off and/or disconn

22、ect all power and signal sources and loads used with the unit. STEP 2 Place the unit on grounded conductive work surfaces. STEP 3 Ground the repair operator using a conductive wrist strap or other device using a 1-M series resistor to protect the operator. STEP 4 Ground any tools (including solderin

23、g equipment) that will contact the unit. Contact with the operators hand provides a sufficient ground for tools that are otherwise electrically isolated. STEP 5 All electrostatic sensitive replacement components are shipped in conductive foam or tubes and must be stored in the original shipping cont

24、ainer until installed. STEP 6 When these devices and assemblies are removed from the unit, they should be placed on the conductive work surface or in conductive containers. STEP 7 When not being worked on wrap disconnected circuit boards in aluminum foil or in plastic bags that have been coated or i

25、mpregnated with a conductive material. STEP 8 Do not handle these devices unnecessarily or remove from their packages until actually used or tested. D TM 11-6625-3146-14 NOTES AND CAUTIONS ELECTRICAL SAFETY PRECAUTIONS This equipment is protected in accordance with IEC Safety Class 1. It has been de

26、signed and tested according to IEC Publication 348, Safety Requirements for Electronic Measuring Apparatus, and has been supplied in a safe condition. The following precautions must be observed by the user to ensure safe operation and to retain the equipment in a safe condition. Defects and abnormal

27、 stresses Whenever it is likely that protection has been impaired, for example as a result of damage caused by severe conditions of transport or storage, the equipment shall be made inoperative and be secured against any unintended operation. Removal of covers Removal of the covers is likely to expo

28、se live parts although reasonable precautions have been taken in the design of the equipment to shield such parts. The equipment shall be disconnected from the supply before carrying out any adjustment, replacement or maintenance and repair during which the equipment shall be opened. If any adjustme

29、nt, maintenance or repair under voltage is inevitable it shall only be carried out by a skilled person who is aware of the hazard involved. Note that capacitors inside the equipment may still be charged when the equipment has been disconnected from the supply. Before carrying out any work inside the

30、 equipment, capacitors connected to high voltage points should be discharged; to discharge mains filter capacitors, if fitted, short together the L (live) and N (neutral) pins of the mains plug. Main plug The mains plug shall only be inserted in a socket outlet provided with a protective earth conta

31、ct. The protective action shall not be negated by the use of an extension lead without protective conductor. Any interruption of the protective conductor inside or outside the equipment is likely to make the equipment dangerous. Before fitting a non-soldered plug to the mains lead, cut off the tinne

32、d ends of the mains lead. Otherwise cold flowing of the solder could cause intermittent connections. Fuses Note that there is a supply fuse in both the live and neutral wires of the supply lead. If only one of these fuses should rupture, certain parts of the equipment could remain at supply potentia

33、l. To provide protection against breakdown of the supply lead, its connectors, and filter where fitted, an external supply fuse (e.g. fitted in the connecting plug) should be used in the live lead. The fuse should have a continuous rating not exceeding 6 A. Make sure that only fuses with the require

34、d rated current and of the specified type are used for replacement. The use of mended fuses and the short-circuiting of fuse holders shall be avoided. E This manual contains copyright material reproduced by permission of Marconi Instruments. TECHNICAL MANUAL TM 11-6625-3146-14 HEADQUARTERS NO. 11-66

35、25-3146-14 DEPARTMENT OF THE ARMY WASHINGTON, DC, 26 December 1985 OPERATORS, ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL MODULATION METER ME- 50 5A/U (MARCONI INSTRUMENTS MODEL 2305) (NSN 6625-01-154-4844) REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS You can help improv

36、e this manual. If you find any mistakes or if you know a way to improve the procedure, please let us know. Mail your letter, DA Form 2028 (Recommended Changes to Publications and Blank Forms), or DA Form 2028-2 located in the back of this manual direct to: Commander, US Army Communications-Electroni

37、cs Command and Fort Monmouth, ATTN: AMSEL-ME-MP, Fort Monmouth, New Jersey 07703-5000. In either case, a reply will be furnished direct to you. Page CHAPTER 1 INTRODUCTION Section I General. 1-1 II Description and Data. 1-2 CHAPTER 2 SERVICE UPON RECEIPT AND INSTALLATION Section I Service Upon Recei

38、pt . 2-1 II Installation. 2-2 CHAPTER 3 OPERATING INSTRUCTIONS . . 3-1 CHAPTER 4 FUNCTIONING OF EQUIPMENT Section I Brief Technical Description. 4-1 II Detailed Technical Description . 4-6 CHAPTER 5 MAINTENANCE Section I Preventive Maintenance Checks and Services (PMCS) . 5-1 II General Support Main

39、tenance. 5-3 III Servicing Diagrams . 5-75 APPENDIX A References .A-1 B Maintenance Allocation Chart.B-1 This manual is an authentication of the manufacturers literature which, through usage, has been found to cover the data required to operate this equipment. Since the manual was not prepared in ac

40、cordance with military specifications and AR 310-3, the format has not been structured to consider levels of maintenance. Change 1 i TM 11-6625-3146-14 LIST OF ILLUSTRATIONS Figure No.TitlePage 1-1500 kHz to 2 GHz Modulation Meter 2305, ME-505A/U. 1-2 1-2Typical full a.m. signal symmetrical modulati

41、on . . 1-14 1-3Asymmetrical modulation . 1-15 2-1Voltage range (alternative switch and locking plate positions. 2-1 2-2Connection to external filter jack . 2-3 3-12305 controls shown in standard power up status . 3-1 3-2Front panel controls and connectors . 3-3 3-3Rear panel controls and connectors. 3-5 3-4Frequency display. 3-6 3-5Modulation and power display. 3-6 3-6Normal and possible fault condition displays occurring during power-up sequence. 3-8 3-7Function status display.