HP TM 11-6625-2779-14&P Manuel d'utilisateur

TM 11-6625-2779-14&PTECHNICAL MANUALOPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, ANDGENERAL SUPPORT MAINTENANCE MANUAL(INCLUDING REPAIR PARTS AND S

Section I Model 3555B1-5. A noise-to-ground (Ng) function is includedwhich permits the measurement of longitudinal noise.When making noise-to ground m

Model 3555B Section IISECTION IIINSTALLATION2-1. INSPECTION.2-2. The set was carefully inspected bothmechanically and electrically before shipment. I

Section II Model 355B2-12. INSTALLATION AND REMOVAL OFBATTERY.2-13. To install or replace a battery, turn the four 1/4turn fasteners on the battery co

Section III Model 3555BSECTION IIIOPERATING INSTRUCTIONS3-1. INTRODUCTION.3-2. The Model 3555B Transmission and NoiseMeasuring Set is an extremely ver

Section III Model 3555BFigure 3-1. Front Panel Controls, Indicators, and Connectors3-2

Model 3555B Section IIITable 3-1. Front, Side and Rear Pane(1) S and G Jacks: Binding posts accepting bananaplugs, spade lugs, phone tips or bare wi

Section III Model 3555BFigure 3-2. Side Panel Controls and Connectors3-4

Model 3555B Section IIITable 3-1. Front, Side and Rear Panel Controls, Indicators and Connectors (Cont’d)2. 135: Selects the input circuitry for 135o

Section III Model 3555Bfrequency Transmission Measuring Set (TMS) for voice,program and carrier multiplex measurements. The set willoperate over a wi

Model 3555B Section IIIwhen no input signal is present and a mechanical zeroadjust is not required. The actual input level to the set isthe algebraic

TM 11-6625-2779-14&PThis manual contains copyrighted material reproduced by permission of Hewlett-Packard Company. All rights arereserved.TECHNIC

Section III Model 3555B3-35. As an aid in identifying the source of noise, theDIAL/AC MON jacks can be used with a monitoringreceiver to listen to the

Model 3555B Section IIIFigure 3-4. Recorder Compatibility ChartFigure 3-5. Simplified Send/Receive Test Set-up3-9

Section III Model 3555B236A FUNCTION switch to 600 HOLD or 900 HOLD,depending on the impedance required. To receive atone, set the 3555B FUNCTION swi

Model 3555B Section IIIFigure 3-7. Test Setup for Measuring Crosstalk Coupling Loss3-58. Normally, a frequency selective voltmeter isused to identify

Section III Model 3555BFigure 3-8. Simple Test for Inductive and Capacitive Coupling0dBC = 0.775V across any impedance as read on an-hp- Model 400D A

Model 3555B Section IIITable 3-3. Level MeasurementSTEP PROCEDURE1. Turn the 3555B/ON and depress theDIAL/BAT pushbutton. The meter shouldindicate i

Section III Model 3555BTable 3-5. Noise-to-Ground MeasurementsSTEP PROCEDURE1. Turn the 3555B POWER switch to ON anddepress the DIAL/BAT pushbutton.

Model 3555B Section IVSECTION IVTHEORY OF OPERATION4-1. INTRODUCTION.4-2. The Model 3555B Transmission and NoiseMeasuring Set is a special measuring s

Section IV Model 3555B4-13. The output of the Input Amplifier goes to theINPUT switch where noise filters are set up for selectionby the NOISE WTG swi

Model 3555B Section IVFigure 4-3. Simplified NG Functione. 600 (Vf/Nm): The 600 function switch S5selects terminating resistors A1R2 andA1R10 for a

SECTION III. OPERATING INSTRUCTIONS (Cont.). Para PageCrosstalk measurements...

Section IV Model 3555BTable 4-1. Range Attenuation and Amplifier GainRANGE RANGE ATTENUATORSetting Attenuation PADS USED Input Amplifier Gain+30dBm 8

Model 3555B Section IVFigure 4-5. 3kHz FLAT and Program Weighting Curves4-5

Section IV Model 3555BFigure 4-6. C-MSG and 1SkHz FLAT Weighting Curves4-6

Model 3555B Section IVidentical in operation, only the first will be discussed indetail.4-27. Referring to Figure 7-4, the signal is applied tothe ass

Section IV Model 3555B4-35. Now consider the peak detection. (See Figure7-5) When A3Q14 is turned on and A3Q17 is turned off,no current flows through

Model 3555B Section VSECTION VMAINTENANCE5-1. INTROOUCTION.5-2. This section of the manual contains informationnecessary in the maintenance of the -hp

Section V Model 3555BFigure 5-1. Balanced BNC to 310 Plugfunction, remove or clip the shorting barfrom across A1 R17 (see Figure 7-2).b. Remove the 1

Model 3555B Section VTable 5-2. 75 UNBAL Carrier Accuracy Check3555B INDICATION (dBm)RANGEFREQUENCY30Hz to 1MHz 100Hz to 600kHz 1MHz to 3MHz+10dBm +1

Section V Model 3555BFigure 5-3. +20dBm and +30dBm Level Accuracy Check5-10. RETURN LOSS CHECK.a. To make a return loss check it will first benecessa

Model 3555B Section IVFigure 5-4. Return Loss Test Set-Upd. Open S1 and down range the 400FL for anon-scale indication. This indicationsubtracted fr

Model 3555B Table of ContentsLIST OF ILLUSTRATIONSNumber Page Number Page1-1.Model 3555B Transmission andNoise Measuring Set...

Section V Model 3555BFigure 5-6. Bridging Loss Test Set-Upj. Change the bridge resistors in Figure 5-4 to135 ohms +0.1% and change the 3555BFUNCTION

Model 3555B Section V1. Reset the 654A output level for 0dBmindication on the 3555B meter at afrequency of 1kHz.2. Check the frequencies listed in Tab

Section V Model 3555BCARRIER 600 and repeat the aboveprocedure. Between 1kHz and 10kHz, thebalance must be greater than 70dB.Between 10kHz and 100kHz

Model 3555B Section Vc. Adjust A3R15 for 0dBm indication on the3555B meter.d. Change the 654A frequency to 1kHz.Change the 3555B FUNCTION switch toVF/

Section V Model 3555BCARRIER function, change C4. To changethe balance on VF/Nm, change the value ofA1C9.c. To determine whether the value of theseca

Model 3555B Section VFigure 5-8. Troubleshooting TreeParagraph 5-38Paragraph 5-37Paragraph 5-36Paragraph 5-355-11

Section V Model 3555BTable 5-6. Front Panel Trouble Analysis3555B SHOULD INDICATE SET ACTUALLY CORRECTIVEINPUT CONDITIONS FUNCTION (RANGE + METER)* I

Model 3555B Section VTable 5-6. Front Panel Trouble Analysis (Cont'd)3555B SHOULD INDICATE SET ACTUALLY CORRECTIVEINPUT CONDITIONS FUNCTION (RAN

Section V Model 3555BTable 5-7. Function TroubleshootingDEFECTIVEFUNCTION VF/Nm CARRIER75 UNBAL A3K2135 BAL A1T2, A3K3,A3R22,A3R23,A3L1, A3R24600 BAL

Model 3555B Section VTable 5-8. FUNCTION Switch Resistance ValuesNOTEThe following resistance measurements were made with C1 shorted. Be sure toremo

SECTION 0INTRODUCTION0-1. ScopeThis manual contains instructions for the operation, organizational maintenance and general support maintenance ofAudio

Section V Model 3555BTable 5-9. Range Attenuation and Amplifier GainAttenuator Pads Used Amplifier Gain(See Figure 7-3) SwitchingRANGES 1 2 3 4+30 X

PERFORMANCE CHECK TEST CARDHewlett-Packard Model 3555B Tests Performed By Transmission and Noise Measuring Set

PERFORMANCE CHECK TEST CARD (Cont'd)CARRIER 600 BALLEVEL ACCURACY CHECK1kHz to 150kHz+10dBm Range +10dBm ±0.5dBm0dBm Range

PERFORMANCE CHECK TEST CARD (Cont'd)RETURN LOSS CHECK 600 ohms 900 ohmsVF/Nm30Hz to 20kHz >30dBCARRI

Model 3555B Section VISECTION VIREPLACEABLE PARTS6-1. INTRODUCTION.6-2. This section contains information for orderingreplacement parts. Table 6-1 li

Section VI Model 3555BTable 6-1. Replaceable PartsREFERENCE -hp- TQ DESCRIPTION MFR. MFR. PART NO.DESIGNATOR PART NO.A1 03555-66507 1 PC Board Ass&ap

Model 3555B Section VITable 6-1. Replaceable Parts (Cont'd)REFERENCE -hp- TQ DESCRIPTION MFR. MFR. PART NO.DESIGNATOR PART NO.A2 (Cont'd)R6

Section VI Model 3555BTable 6-1. Replaceable Parts (Cont'd)REFERENCE -hp- TQ DESCRIPTION MFR. MFR. PART NO.DESIGNATOR PART NO.A3 (Cont'd)CR

Model 3555B Section VITable 6-1. Replaceable Parts (Cont'd)REFERENCE -hp- TQ DESCRIPTION MFR. MFR. PART NO.DESIGNATOR PART NO.A3 (Cont'd)R4

Section VI Model 3555BTable 6-1. Replaceable Parts (Cont'd)REFERENCE -hp- TQ DESCRIPTION MFR. MFR. PART NO.DESIGNATOR PART NO.A4 (Cont'd)C3

b. Report of Packaging and Handling Deficiencies. Fill out and forward DD Form 6 (Packaging ImprovementReport) as prescribed in AR 700-58/NAVSUPINST

Model 3555B Section VITable 6-1. Replaceable Parts (Cont'd)REFERENCE -hp- TQ DESCRIPTION MFR. MFR. PART NO.DESIGNATOR PART NO.A4 (Cont'd)R4

Section VI Model 3555BTable 6-1. Replaceable Parts (Cont'd)REFERENCE -hp- TQ DESCRIPTION MFR. MFR. PART NO.DESIGNATOR PART NO.CHASSIS MOUNTED CO

Model 3555B Section VITable 6-1. Replaceable Parts (Cont'd)REFERENCE -hp- TQ DESCRIPTION MFR. MFR. PART NO.DESIGNATOR PART NO.MISCELLANEOUS (Con

TM 11-6625-2779-14&PTABLE 6-2.PART NUMBER - NATIONAL STOCK NUMBERCROSS REFERENCE INDEXREPLACEMENTNATIONAL NATIONALPART STOCK PART STOCKNUMBER FSCM

6-11

Model 3555B Appendix A6-12

CODE LIST OF MANUFACTURERS (Continued)6-13

Model 3555B Section VIISECTION VIICIRCUIT DIAGRAMS7-1. INTRODUCTION.7-2. This section of the Manual contains circuitdiagrams for the Model 3555B Trans

Section VII Model 3555B7-2

Figure 7-1. Functional Block Diagram7-3/7-4

0-7. Items Comprising an Operable EquipmentAudio Level Meter TA-885/U includes the meter, with cover and a power cord. The power cord is stored insid

Figure 7-2. A1 Function Assembly Schematic and Component Location7-5/7-6

Figure 7-3. A2 Range Attenuator and A3 Input Amplifier Schematic and Component Location27-7/7-8

Figure 7-4. A4 Filter Schematic and Component Location7-9/7-10

Figure 7-5. A3 Meter Amplifier, Detector and Series Regulator Schematic and Component Locations7-11/7-12

APPENDIX AREFERENCESDA Pam 310-4 Index of Technical Manuals, Technical Bulletins, Supply Manuals (Types 7, 8, and 9), SupplyBulletins and Lubrication

APPENDIX BMAINTENANCE ALLOCATIONSection I. INTRODUCTIONB-1. GeneralThis appendix provides a summary of the maintenanceoperations for TA-885/U. It au

F - Direct SupportH - General SupportD - Depote. Column 5, Tools and Equipment. Column5 specifies by code those common tool sets (notindividual tools

TM 11-6625-2779-14&PSECTION II. MAINTENANCE ALLOCATION CHARTFORAUDIO LEVEL METER TA-885/U(1) (2) (3) (4) (5) (6)MAINTENANCE CATEGORYGROUP MAINTEN

TM 11-7725-2779-14&PSECTION III. TOOL AND TEST EQUIPMENT REQUIREMENTSFORAUDIO LEVEL METER TA-885/UTOOL OR TEST MAINTENANCE NATIONAL/ TOOLEQUIPMEN

Model 3555B APPENDIX C Appendix CMANUAL BACKDATING CHANGESModel 3555BTRANSMISSION AND NOISE MEASURING SETThis manual backdating sheet makes this manua

Section I Model 3555BTable 1-1. SpecificationsVOICE FREQUENCY LEVEL MEASUREMENTS (20Hz balanced and 75 ohms unbalanced.to 20kHz) Return loss: TERM ON

Appendix C Model 3555BChange part no. of the case assembly to 03555-04505.Change cover part no. to 03555-04504.Table 6-1.Change the part no. of the po

By Order of the Secretary of the Army:E. C. MEYERGeneral, United States ArmyOfficial: Chief of StaffJ. C. PENNINGTONMajor General, United States ArmyT

PIN: 043606-000

Model 3555B Section ISECTION IGENERAL INFORMATION1-1. INTRODUCTION.1-2. The Hewlett-Packard Model 3555 BTransmission and Noise Measuring Set is a vers