Keysight Technologies CXA N9000B, Manual

Page: 26 / 88

26 N9069C Noise Figure Measurement Guide
Making Noise Figure Measurements
Making Frequency Converter Measurements
Step Action Notes
1. Configure the system
calibration
— Connect the calibration
system as shown in
Figure 2-3 on page 21 .
If you have 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.
2. Configure the amplitude
parameters
— Press
AMPTD
, select the
Attenuation
tab and set
the value used in the
measurement stage.
— Press
MEAS SETUP
,
select the
Cal Setup
tab,
User Cal
, and set the
Min Atten
and
Max
Atten
values.
The attenuation value used in the measurement
should be in the range of Min Atten and Max
Atten values.
3. Perform a calibration
— Press
CALIBRATE
.
You will be asked to confirm the calibration. See
the following figure for results after calibration.
When calibration is complete the measurement
system is calibrated at the mixer output. The red
UNCAL
text changes to green
CAL
text in the top
right side of the display.