348 Keysight NFA Series Noise Figure Analyzers Service Guide
Service and Diagnostics Menus
Service Key Descriptions
LO Control
Provides keys that allow you to control the LO. This is only present on analyzers
equipped with Opt EXM, External Mixing.
2nd LO Gain DAC
This parameter provides the ability to adjust the output gain of the 2nd LO
DAC. The range is from 0 to 4095 where 0 is the minimum gain and 4095 is the
maximum gain. Setting a value of 4096 or greater returns control to the
instrument. In External Mixing, this DAC controls the level of the 1st LO signal
at the front panel EXT MIXER connector.
External LO Turnoff
Disconnects the 1st LO path which will minimize the effect of the 1st LO signal
at the front panel EXT MIXER connector.
Содержание N8973B
Страница 4: ...4 ...
Страница 44: ...44 Keysight NFA Series Noise Figure Analyzers Service Guide Overview How to Return Your Instrument for Service ...
Страница 132: ...132 Keysight NFA Series Noise Figure Analyzers Service Guide Instrument Messages Condition Messages ...
Страница 228: ...228 Keysight NFA Series Noise Figure Analyzers Service Guide RF Section Troubleshooting N8976B Troubleshooting ...
Страница 268: ...268 Keysight NFA Series Noise Figure Analyzers Service Guide Analog Digital IF Troubleshooting 25 MHz BW IF Section ...
Страница 322: ...322 Keysight NFA Series Noise Figure Analyzers Service Guide Block Diagrams Block Diagrams Block Diagrams ...
Страница 332: ...332 Keysight NFA Series Noise Figure Analyzers Service Guide Block Diagrams Block Diagrams NFA Computer Block Diagram ...
Страница 350: ...350 Keysight NFA Series Noise Figure Analyzers Service Guide Service and Diagnostics Menus Front Panel Key Test ...
Страница 470: ...470 Keysight NFA Series Noise Figure Analyzers Service Guide Assembly Replacement Procedures Front Frame Assembly ...