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HP EPM-441A/442A Service Guide
Contents-3
Equipment .............................................................................. 3-8
Procedure ................................................................................ 3-8
Measurement Uncertainty..................................................... 3-11
Display Brightness and Contrast Adjustment ............................ 3-12
Introduction ............................................................................ 3-12
Procedure ................................................................................ 3-12
Theory of Operation
........................................................................... 4-1
Introduction................................................................................... 4-2
A1 Power Supply ........................................................................... 4-3
A2 Processor Assembly ................................................................. 4-4
A3 Front Panel Assembly ............................................................. 4-7
A4 Interface Assembly.................................................................. 4-8
A5 Daughter Assembly ................................................................. 4-9
A6 Measurement Assembly .......................................................... 4-10
Replaceable Parts
............................................................................... 5-1
Introduction................................................................................... 5-2
Assembly Part Numbers............................................................... 5-3
Front Panel Connector Repair ..................................................... 5-5
Firmware Upgrades ...................................................................... 5-6
Downloading Firmware.......................................................... 5-6
Assembly and Disassembly Guidelines ....................................... 5-7
Removing the Power Meter Cover ......................................... 5-7
Removing the A1 Power Supply Assembly ........................... 5-8
Removing the A2 Processor Assembly................................... 5-9
Removing the A4 Interface Assembly ................................... 5-10
Removing the A5 Daughter or A6 Measurement
Assemblies .............................................................................. 5-11
Removing the A7 Fan Assembly ............................................ 5-12
Removing the Power Meter Battery (BT1)............................ 5-13
Removing the A3 Front Panel Assembly............................... 5-14
Replacing the Front Panel Power Reference Cable
Assembly ................................................................................. 5-17
Replacing the Rear Panel Power Sensor Cable
Assemblies (Options 002 and 003)......................................... 5-18
Replacing the Rear Panel Power Reference Cable
Assembly (Option 003) ........................................................... 5-20
4402serv.book Page 3 Monday, March 11, 2002 11:34 AM
Содержание E4418A
Страница 3: ...Service Guide HP EPM E4418A E4419A EPM 441A 442A Power Meters HP Part no E4418 90006 January 24 1997 ...
Страница 16: ...About this Guide xiv HP EPM 441A 442A Service Guide 4402serv book Page xiv Monday March 11 2002 11 34 AM ...
Страница 20: ...Contents 4 HP EPM 441A 442A Service Guide 4402serv book Page 4 Monday March 11 2002 11 34 AM ...
Страница 22: ...Contents 6 HP EPM 441A 442A Service Guide 4402serv book Page 6 Monday March 11 2002 11 34 AM ...
Страница 24: ...Contents 8 HP EPM 441A 442A Service Guide 4402serv book Page 8 Monday March 11 2002 11 34 AM ...
Страница 25: ...1 Specifications 4402serv book Page 1 Monday March 11 2002 11 34 AM ...
Страница 41: ...2 Performance Tests 4402serv book Page 1 Monday March 11 2002 11 34 AM ...
Страница 59: ...3 Adjustments 4402serv book Page 1 Monday March 11 2002 11 34 AM ...
Страница 71: ...4 Theory of Operation 4402serv book Page 1 Monday March 11 2002 11 34 AM ...
Страница 83: ...HP EPM 441A 442A Service Guide Instrument Block Diagram pullout1 fm Page 1 Monday March 11 2002 1 39 PM ...
Страница 85: ...5 Replaceable Parts 4402serv book Page 1 Monday March 11 2002 11 34 AM ...
Страница 108: ...Index 4 HP EPM 441A 442A Service Guide 4402serv book Page 4 Monday March 11 2002 11 34 AM ...