N9069C Noise Figure Measurement Guide 65
Measurement Related Tasks and Concepts
Setting the Signal Analyzer to Make a Measurement
“Entering ENR Table Data for Noise Sources” on page 65
“Saving an ENR Table” on page 68
“Entering ENR Data from Internal Storage” on page 69
“Using a Spot ENR Value” on page 69
“Setting the Tcold Value” on page 69
Selecting a Common ENR Table
You can use the same ENR table for calibration and for making measurements,
or you can use separate Measurement ENR (Meas Table) and Calibration ENR
(Cal Table) tables. You need separate measurement and calibration tables
when separate noise sources are used for DUT measurements and for
calibration. An example of this is when you are using frequency converters, and
the calibration range is different than the measurement range.
To use the same ENR table for calibration and measurement:
Press
MEAS SETUP
,
ENR
,
Use Meas Table Data for Cal
to
On
.
When the Use Meas Table Data for Cal is turned on, the ENR data for both the
measurement and calibration is sourced from a combined ENR table. When it
is turned off, the measurement and calibration ENR data is sourced from
separate tables.
Entering ENR Table Data for Noise Sources
You can enter ENR data in the form of an ENR table in the following ways:
— You can manually input the required frequencies and corresponding ENR
values.
— You can load the ENR data from a USB storage device on which the data
has been previously stored. (The diskette supplied with every Keysight 346
Series noise source contains the ENR data for that particular noise source.
The information on the diskette can be transferred to a USB storage device,
which will enable you to load the data or store it in the analyzer’s memory.)
— You can load the ENR data from the internal analyzer memory, where the
data has been previously stored.
ENR tables can contain up to 501 frequency points.
Summary of Contents for CXA N9000B
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