Global Settings - Keysight x-series User Reference Manual

is designed to report the amount of input signal that is in excess of the thermal noise, not the amount that
includes the thermal noise. This can be a useful behavior because thermal noise often interferes with what
you want to measure, instead of being part of what you want to measure. Note that NFE is not adequately
accurate to always be able to read below kTB.
On instruments with the NF2 license installed, the calibrated Noise Floor used by Noise Floor Extensions
should be refreshed periodically. Agilent recommends that the Characterize Noise Floor operation be
performed after the first 500 hours of operation, and once every calendar year. The key to perform this is
located in the System, Alignments, Advanced menu. If you have not done this yourself at the
recommended interval, then when you turn on Noise Floor Extensions, the analyzer will prompt you to do
so with a dialog that says:
"This action will take several minutes to perform. Please disconnect all cables from the RF input and press
Enter to proceed. Press ESC to cancel, or Postpone to postpone for a week."
If you Cancel, you will be prompted again the next time you turn NFE on. If you postpone, you will be
prompted again after a week passes and you then turn NFE on.

Global Settings

Opens a menu that allows you to switch certain Meas Global parameters to a Mode Global state.
Key Path
Initial S/W Revision
Global Center Freq
When the EMI Receiver mode chooses the mode global CF behavior, the Center Frequency value is
maintained when entering the EMI Receiver mode from any other mode that supports Global Center Freq.
When the EMI Receiver mode chooses to not use the mode global CF, the default CF is 515 MHz upon
entering EMI Receiver mode.
Key Path
Initial S/W Revision
Global EMC Std
When the Global EMC Std key is switched to On in any mode, the current mode's EMC Std is copied into the
Global EMC Std, and from then on all modes that support global settings use the Global EMC Std. So you
can switch between any of these modes and the EMC Std will remain unchanged.
Adjusting the EMC Std of any mode that supports Global Settings, while Global EMC Std is On, will modify
the Global EMC Std.
When Global EMC Std is turned Off, the EMC Std of the current mode is unchanged, but now the EMC Std
of each mode is once again independent. When Mode Preset is pressed while Global EMC Std is On, the
Global EMC Std is preset to the preset EMC Std of the current mode.
EMI Receiver Mode Reference
Mode Setup
A.07.00
Mode Setup, Global Settings
A.07.00
5 Mode Functions
Mode Setup
259