Keysight N9927-90001 User’s Guide 557
Noise Figure Mode (Option 356 – CPU2 Only)
How to Define a Noise Figure Measurement
——More opens additional ENR Spot Value softkey
menu choices
——
Γ Spec. Style [95th %ile] Opens a menu of
softkeys to set the
Γ specification style.
Then choose Maximum
, 95th %ile (default), 80th
%ile, Median, Mean, or Fixed.
——
Γ Distribution [Rayleigh] Opens a menu of
softkeys to set the type of
Γ distribution.
Then select Rayleigh
(default), Fixed, or Uniform
in Circle.
— ENR Table Edit/Save/Recall
Opens the ENR table menu to
edit, save, or recall noise source values (Not active with
ENR Mode set to Spot).
Then choose:
——Edit ENR Table
Opens the currently selected
table of noise source values (generic default
noise source values are populated for quick
check). Enter your noise source’s values for more
accurate measurements.
——New ENR Table opens a new ENR table for
entering and saving additional noise source
values.
——Save ENR Table Opens a menu of softkeys to
enable you to enter a unique noise source
filename.
——Recall ENR Table
Opens a menu of file recall
softkeys and displays a list of stored noise source
files.
——Storage Device [Internal]
Opens a menu of
softkeys to set the storage location for your files.
Then choose Internal
(default), SD Card, or USB.
——Back
to return to previous menu.
IMPORTANT! Save your noise source table with a unique filename to avoid
loss of table data. All noise figure files are saved with *.enr type suffixes.
The FieldFox displays Replace existing file?, because the displayed default filename
is the one last saved. Enter a unique filename to avoid loss of table data (i.e., all noise figure files
are saved with *.enr type suffixes).
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