224 Keysight N9938-90003 User’s Guide
System Settings
Utilities
— The USB ports are used to supply power to the head
— Port 1 is used to supply an LO signal to the head. The LO signal is
automatically generated, using the internal source. Therefore the
application disables normal Port 1 access to the internal source. But,
automatic alignments of the SA Receiver still remain active using an
internal path for the source.
— Port 2 is where the head delivers the downconverted signal to the SA
receiver.
— High Sensitivity ON OFF selection: able to choose between showing largest
span (wide) available (6 GHz) or best noise floor (narrow).
The OML frequency extenders have approximately 4 to 10 dB of gain
depending on the mixer and frequency.
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