Keysight Technologies C Series User Manual page 685

Noise Figure Mode (Option 356)
How to Define a Noise Figure Measurement
2. Select Measure Setup—choose:
Keysight N9915-90020 User's Guide
b. Then modify the settings based on the selected noise figure type
— Noise Source
or "DUT or" on page
page 686, or "Uncertainty" on page
Opens a menu of softkeys to define the Noise Figure's ENR Mode
Smart (Smart Source), Spot, and Table and uncertainty values.
To learn more, refer to
page 679, and Figure 29-10 on page
Then choose:
— ENR Mode [Table]
——Spot
——Smart (Auto)
——Table
— ENR Spot Values
either for measurements at a single frequency or for
measurements across a range of frequencies that is narrow
enough such that the ENR value does not change
significantly across that range (Active when ENR Mode set
to Spot).
Then choose:
——ENR
——ENR Uncert.
——On |
686, "Integration or" on
687.
Figure 29-8 on page
680.
then choose from:
You can enter ENR data for the noise source
you are using as a single spot value.
The single spot value is used either for
measurements at a single frequency, or for
measurements across a range of frequencies that
is narrow enough such that the ENR value does
not change significantly across that range.
(Default == Spot).
The FieldFox checks for a valid USB
noise source and automatically loads any ENR
and calibration values. And, automatically loads
a T Cold value from the USB Noise Source,
measured in Kelvin.
You can enter ENR data for the noise
source you are using as a table of values. The
values held in the table can be used for
measurements at a range of frequencies as well
as at a fixed frequency.
Opens a menu to enter a spot value
sets the ENR spot value in dB (default is
15 dB).
sets the ENR spot uncertainty value
in dB (default is 0.000 dB).
|
Γ sets the On value (hot) of the ENR spot
value's 50 match,
Ω Γ
678, Figure 29-9 on
(0.000 to 1.000).
683