Miscellaneous Contd | HP TM 11-6625-2779-14&P specification

Model 3555B						Section VI
			Table 6-1. Replaceable Parts (Cont'd)

REFERENCE	-hp-	TQ		DESCRIPTION	MFR.	MFR. PART NO.
DESIGNATOR	PART NO.

				MISCELLANEOUS (Cont'd)
	1251-1145	1		Plug: battery	72825	7364
	525C-49A	2		Handle: panel	-hp-
	00236-04105	1		Cover: battery	-hp-
	1390-0186			Stud: fastener cadmium plated steel	71286	26542-4
	00741-01212	2		Bracket: meter	-hp-
	03555-00206	1		Panel: front	-hp-
	03555-00204	1		Panel: sub	-hp-
	0340-0732	1		Insul: Bdg Post	-hp-
	03555-26510	1		Test board: blank	-hp-
	03555-60604	1		Shield Ass'y: amplifier	-hp-
	03555-61204	1		Retainer Ass'y: cord/headphone	-hp-
	0355541203	1		Retainer: headphone	-hp-
	03556-64507	1		Cover: assembly	-hp-
	03556-64508	1		Case Assembly	-hp-
	03556-90007	1		Manual: operating and service	-hp-

6-9

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HP TM 11-6625-2779-14&P manual Miscellaneous Contd

Contents

HEADQUARTERS, Department of the Army Technical Manual Headquarters Department of the Army Reporting Errors and Recommending ImprovementsTM 11-6625-2779-14&P NSN Replaceable Parts Iii List of IllustrationsList of Tables Scope Maintenance Forms, Records, and ReportsSection Introduction Reporting Equipment Improvement Recommendations EIR Administrative StorageDestruction of Army Electronics Materiel Items Comprising an Operable Equipment Specifications Voice Frequency Level Measurements 20Hz to 20kHz Section Section General Information Introduction Instrument Identification Accessory Equipment SuppliedAccessory Equipment Supplied BAL Modification Power Requirements Section Installation InspectionWarranty Exception Battery Installation and Removal of Battery Cover Removal Section Controls Connectors IndicatorsBattery Operating Instructions Front Panel Controls, Indicators, and Connectors Front, Side and Rear Pane Side Panel Controls and Connectors Level and Noise Measurements Level MeasurementsPage Noise Measurement Recorder Compatibility Applications Recorder Compatibility Chart Crosstalk Measurements Identifying Noise CharacteristicsTransmission Loss Measurements Crosstalk Correction Factor Measurements in DBC Input jacks are connected in parallel. If a 600 ohm Reinstall the set in its case0dBm 135 BAL Step Procedure Level Measurement Noise Metallic Measurements Example Noise-to-Ground Measurements Balance MeasurementRecorder Calibration Transmission Loss Measurement Block Diagram Description Section Theory of Operation Introduction Detailed Circuit Description Simplified Dial BAT Function Input Amplifier A3. Schematic No Range Attenuator A2 Range Attenuator Setting AttenuationFILTERS. Schematic No Pads Used KHz Flat and Program Weighting Curves C-MSG and 1SkHz Flat Weighting Curves Meter AMPLIFIER. Schematic No DETECTOR. Schematic No Power Supply and Series Regulator Schematic No Factory Selected Values Section Maintenance IntroouctionInstrument Recommended Type Required Characteristics Model BAL Conversion Function CARRIER, 75 Unbal Performance ChecksLevel Accuracy Checks TMS, Term Frequency Unbal Carrier Accuracy CheckRange 30Hz to 1MHz 100Hz to 600kHz 1MHz to 3MHz Return Loss Check 20Hz to 20kHz 40Hz to 15kHz 100Hz to 20kHz 100Hz to 15kHz Return Loss Test Set-Up MSG dBm 3kHz Flat dBm 15kHz Flat dBm Program dBm Filter Response ChecksFilter Response Checks TMS Brdg Input BalanceBridging Loss Input TMS Brdg Unbal Calibration Adjustment and Calibration ProcedurePower Supply Check Attenuator Calibration Balance Check Frequency Response AdjustmentCommon Mode Adjustment Filter Calibration Assembly RemovalTroubleshooting Procedures Troubleshooting Tree Front Panel Trouble Analysis Dial BAT Range Troubleshooting Front Panel TroubleshootingFunction Troubleshooting Front Panel Trouble Analysis Contd Troubleshooting the Meter Amplifier and Detector Troubleshooting Input AmplifierFilter Troubleshooting Defective Function Tip to Ring Tip to Ground Ring to Ground Function Switch Resistance ValuesFunction Input Jacks DIAL/AC MON Jacks Brdg Term Range dBm Pin 1 to Pin 2 to 11. Factory Selected Values10. Resistance Checks Carrier 75 Unbal Level Accuracy Check Performance Check Test CardDescription Check Carrier 135 BAL Level Accuracy Check Performance Check Test Card Contd Carrier 600 BAL Level Accuracy Check Program Return Loss CheckFilter Response Checks MSG Bridging Loss Check Section Replaceable Parts Introduction Ordering Information Replaceable Parts 03555-66507 PC Board Assy function Replaceable Parts Contd 03555-66508 Board Assy amplifier A3 Contd 03555-66506 PC Board Assy filter A4 Contd Chassis Mounted Components Chassis Mounted Components Contd Miscellaneous Miscellaneous Contd Fscm Replacement National Part Stock Number FscmPart Number National Stock Number Cross Reference Index National Stock NumberPage Model 3555B Appendix a Code List of Manufacturers Schematic Diagrams Circuit DiagramsFunctional Block Diagram Reference Designations Section Model 3555B Functional Block Diagram 7-4 A1 Function Assembly Schematic and Component Location 7-6 7-8 A4 Filter Schematic and Component Location 7-10 11/7-12 Appendix a References Appendix B Maintenance Allocation Section I. Introduction GeneralMaintenance Function Column Entries Tool and Test Equipment Requiremen ts Sec Remarks Sec Audio Level Meter TA-885/U TM 11-7725-2779-14&P REF Code Number Transmission and Noise Measuring SET Appendix CManual Backdating Changes Delete CR6 across M1 Government Printing Office 1980-603-128/66 Major General, United States Army Adjutant General General, United States ArmyChief of Staff Active ArmyPage PIN