Keysight Technologies N5222B, Руководство по обслуживанию

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Keysight N5290/1A Service Guide 5-5
Theory of Operation
Theory of Operation
Overview – N5292A Test Set
The N5292A Test Set is the contains multiple assemblies, Power Supply, Test
Set mother board, LOPA, LODA, Phase Correction Board, fans, cables and
connectors.
The N5292A test set can simultaneously drive 4 ports fully loaded with
multiple millimeter heads, up to 120 GHz frequency coverage.
Power Supplies
The power supply generates the following supply voltages, +12V, +9V, +5.2V,
+5.1D, +3.5D, -7V and -15V, +15V, -9V, +9V, +6.2V, +6.2V, +4.2V, +4.2V, +3.3V.
Each filter has its own LC filter and fuse (with socket for ease of replacement).
Figure 5-2 TSMB LEDs and the status of the FPGAs. When the magenta LED(s) is
illuminated the FPGA(s) are not enabled (i.e., 4.4V, +6.4V, and 9.2V).
LO Distribution Amplifiers (LODA)
Provides the LO signals to the LODA. A power splitter supplies both output
ports.
LO Preamplifiers (LOPA)
Provides the RF power for the test set mother-board (TSMB).