HP (Hewlett-Packard) TM 11-6625-2779-14&P 사용자 설명서

다운로드
페이지 83
SECTION
OPERATING INSTRUCTIONS (Cont.).
Para
Page
Crosstalk measurements................................................................................................... 3-53
Identifying noise characteristics......................................................................................... 3-57
Measurements in DBC ...................................................................................................... 3-64
Measurement procedures .................................................................................................. 3-67
150 BAL conversion .......................................................................................................... 3-69
THEORY OF OPERATION
Introduction....................................................................................................................... 4-1
Block diagram description ................................................................................................. 4-7
Detailed circuit description................................................................................................. 4-16
Range attenuator A2 ......................................................................................................... 4-18
Input amplifier A3.............................................................................................................. 4-20
Filters................................................................................................................................ 4-25
Meter amplifier .................................................................................................................. 4-30
Detector ............................................................................................................................ 4-32
Power supply and series regulator ..................................................................................... 4-37
MAINTENANCE
Introduction....................................................................................................................... 5-1
Factory selected values ..................................................................................................... 5-4
150 BAL conversion .......................................................................................................... 5-6
Performance Checks ......................................................................................................... 5-7
Adjustment and calibration procedure................................................................................ 5-14
Assembly removal............................................................................................................. 5-25
Troubleshooting procedures .............................................................................................. 5-27
Factory selected values ..................................................................................................... 5-39
REPLACEABLE PARTS
Introduction....................................................................................................................... 6-1
Ordering information ......................................................................................................... 6-4
CIRCUIT DIAGRAMS
Introduction....................................................................................................................... 7-1
Functional block diagrams................................................................................................. 7-3
Schematic diagrams ......................................................................................................... 7-5
REFERENCES..................................................................................................................
MAINTENANCE ALLOCATION
SECTION
Introduction.......................................................................................................................
Maintenance allocation chart for Meter, Audio Level TA-885/U...........................................
Tool and test equipment requirements for Meter, Audio Level TA-883/U ............................
IV.
Remarks (Not applicable)
MANUAL BACKDATING CHANGES..................................................................................
ii