Keysight Technologies CXA N9000B, Manual

Page: 15 / 88

N9069C Noise Figure Measurement Guide 15
Making Noise Figure Measurements
Making Basic Measurements
Figure 2-1 System Connections for The Two Steps in Noise Figure Measurement
When you are making measurements, follow the procedure and change the
values to meet your needs.
Calibrating the Analyzer
Connect the noise source and the signal analyzer following the calibration
setup in Figure 2-1 . Then follow the procedure below.
Calibration
You may need to use adapters to connect the noise source output to the analyzer
input during calibration. The connectors you use need to be included in the
measurement if possible. If you remove these connectors for the calibration, you
need to apply Loss Compensation to compensate for any loss caused by the
connector’s removal if you need improved accuracy.
“Using Loss
Compensation” on page 78
has an explanation of this.
Step Action Notes
1. Turn the instrument on — Press the power key To obtain optimum measurement accuracy,
it is recommended the analyzer warm up for
30 minutes.
2. Select the mode and
measurement
— Press
MODE/MEAS
,
Noise Figure
,
OK
3. Preset the mode
— Press
Mode Preset
If you have a U7227-Series USB Preamplifier, see “Guide for Using
U7227-Series USB Preamplifier and the Internal Preamplifier inside
X-Series Signal Analyzer” on page 41 to find the proper system
configurations for your test case, and turn on the internal preamplifier, set the
internal attenuation range for calibration, and set the internal attenuation for the
measurement if needed.