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Keysight Technologies E4417A

Keysight Technologies E4417A
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16 Keysight E4416A/E4417A Power Meters Service Guide
A3 Front Panel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
A4 Comms Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
A5 Daughter Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
A6 Measurement Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Average Path Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Normal Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Ancillary Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
5Replaceable Parts
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Assembly Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Front Panel Connector Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Firmware Upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Assembly and Disassembly Guidelines . . . . . . . . . . . . . . . . . . . . . . . . 107
Removing the Power Meter Cover . . . . . . . . . . . . . . . . . . . . . . . . . 107
Removing the A1 Power Supply Assembly . . . . . . . . . . . . . . . . . . . 108
Removing the A2 Processor Assembly . . . . . . . . . . . . . . . . . . . . . . 109
Removing the A4 Comms Assembly . . . . . . . . . . . . . . . . . . . . . . . . 111
Removing the A5 Daughter or A6 Measurement Assemblies . . . . 113
Removing the A7 Fan Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Removing the Power Meter RAM Battery (BT1) . . . . . . . . . . . . . . . 115
Removing the A3 Front Panel Assembly . . . . . . . . . . . . . . . . . . . . . 116
Replacing the Front Panel Power Reference Cable Assembly . . . . 120
Replacing the Rear Panel Power Sensor Cable Assemblies
(Options 002 and 003) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Replacing the Rear Panel Power Reference Cable Assembly
(Option 003) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Replacing the Rear Panel Recorder Output(s) Cable Assembly . . 125
Replacing The Chassis Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . 126
6 Troubleshooting
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Suggested Diagnostic Equipment . . . . . . . . . . . . . . . . . . . . . . . . . 128

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