HP TM 11-6625-2779-14&P - Manual (Page 3)

SECTION III. OPERATING INSTRUCTIONS (Cont.). Para Page
Crosstalk measurements................................................................................................... 3-53 3-10
Identifying noise characteristics......................................................................................... 3-57 3-10
Measurements in DBC ...................................................................................................... 3-64 3-11
Measurement procedures .................................................................................................. 3-67 3-12
150 BAL conversion .......................................................................................................... 3-69 3-12
IV. THEORY OF OPERATION
Introduction....................................................................................................................... 4-1
4-1
Block diagram description ................................................................................................. 4-7 4-1
Detailed circuit description................................................................................................. 4-16 4-2
Range attenuator A2 ......................................................................................................... 4-18 4-3
Input amplifier A3.............................................................................................................. 4-20 4-3
Filters................................................................................................................................ 4-25 4-4
Meter amplifier .................................................................................................................. 4-30 4-7
Detector ............................................................................................................................ 4-32 4-7
Power supply and series regulator ..................................................................................... 4-37 4-8
V. MAINTENANCE
Introduction....................................................................................................................... 5-1
5-1
Factory selected values ..................................................................................................... 5-4 5-1
150 BAL conversion .......................................................................................................... 5-6 5-1
Performance Checks ......................................................................................................... 5-7 5-2
Adjustment and calibration procedure................................................................................ 5-14 5-8
Assembly removal............................................................................................................. 5-25 5-10
Troubleshooting procedures .............................................................................................. 5-27 5-10
Factory selected values ..................................................................................................... 5-39 5-15
VI. REPLACEABLE PARTS
Introduction....................................................................................................................... 6-1
6-1
Ordering information ......................................................................................................... 6-4 6-1
VII. CIRCUIT DIAGRAMS
Introduction....................................................................................................................... 7-1
7-1
Functional block diagrams................................................................................................. 7-3 7-1
Schematic diagrams ......................................................................................................... 7-5 7-1
APPENDIX A. REFERENCES.................................................................................................................. A-1
APPENDIX B. MAINTENANCE ALLOCATION
SECTION I. Introduction....................................................................................................................... B-1
Il. Maintenance allocation chart for Meter, Audio Level TA-885/U........................................... B-3
III. Tool and test equipment requirements for Meter, Audio Level TA-883/U ............................ B-4
IV. Remarks (Not applicable)
APPENDIX C. MANUAL BACKDATING CHANGES.................................................................................. C-1
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