Keithley 7090 Instruction Manual page 10

4 Service Information
Introduction ................................................................................
Handling and cleaning precautions ............................................
Handling fiber-optic cables .................................................
Storing optical connectors ...................................................
Cleaning optical connectors ................................................
Performance verification .............................................................
Environmental conditions ....................................................
Insertion loss tests (an example) .........................................
Principles of operation ................................................................
Block diagram .....................................................................
Power supplies .....................................................................
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