Keysight Technologies C Series - Overview of Softkey Menus

682 Keysight N9915-90020 User’s Guide
Noise Figure Mode (Option 356)
How to Define a Noise Figure Measurement
— Amplifier (default),
—
Downconverter,
—
Upconverter, or
—
Multi-Stage Converter
8. Run a User Calibration (i.e., If you are using an external preamp).
(Cal
>Run User Cal and follow prompts).
9. Use Measure
to select the type of noise figure measurement:
— Noise Figure,
—
Noise Factor,
—
Gain,
—
Noise Temperature, or
—
Y-Factor
10.Use Meas Setup > Uncertainty > Uncert Contributions to Enable/Disable
Uncertainty Contributions:
—
Jitter Uncert OFF ON
,
—
ENR Uncert OFF ON,
—
Mismatch Uncert OFF ON,
—
User Cal Uncert OFF ON (applies the current User Cal uncertainty to
the current measurement’s uncertainty calculations), and
— Then Back > Uncert Bars to ON.
Overview of Softkey Menus
This sections describes the Noise Figure’s Measure, Measure Setup softkeys,
and related sub-menu softkeys.
1. Define a measurement type.
a. Select a Measure
—choose:
— Noise Figure Specify Noise Figure (default) or
— Noise Factor Specify a Noise Factor or
—
Gain Specify Gain or
—
Noise Temperature Specify Noise Temperature or
— YFactor Specify Y-Factor
Noise Figure has asymmetrical uncertainty (i.e., log measurement). Noise
Factor and Noise Temperature have symmetrical uncertainty (i.e., linear
measurement). Uncertainty is not displayed for Gain and Y-Factor.