Keysight Nfa Series Noise Figure Analyzer Overview - Keysight N8973B Service Manual

Overview

Keysight NFA Series Noise Figure Analyzer Overview

Keysight NFA Series Noise Figure Analyzer Overview

The NFA Series Noise Figure Analyzers are high performance noise figure
analyzers designed to make fast, accurate, and repeatable noise figure
measurements. When paired with an SNS Series noise source and U7227
Series USB preamplifier the ENR data from the SNS, and the USB preamplifier
data automatically downloads into the instrument. The NFA Series has a
multi-touch interface that allows stretch, pinch, and drag gestures. Most
menus can be accessed with the tap of a finger without changing screens.
Noise source calibrations for Y-Factor measurements have been streamlined
by allowing combined calibrations for up to 12 DUT setups in a single step.
Saving valuable test time can be achieved for many types of DUTs by using the
internal calibration feature, which does not require a user calibration to be
performed.
A built-in noise figure uncertainty calculator can pre-populate data from the
SNS noise source, USB preamplifier, as well as all the required instrument
parameters such as analyzer noise figure, gain and noise figure uncertainty,
and match. Default noise figure settings offer simultaneous noise figure and
gain measurements. By using Table view several measurements including
Noise Figure, Noise Factor, Y-Factor, Gain, P , P , and T can be
hot cold effective
viewed simultaneously in tabular form.
The NFA Series is more than a dedicated noise figure analyzer. Additional
flexibility with spectrum analyzer and IQ Analyzer (Basic) modes allows
customers to move beyond noise figure to further analyzer DUT characteristics
if needed.
A 26.5 GHz internal Preamplifier (Option P26), 25 MHz analysis bandwidth
(Option B25), precision frequency reference (Option PFR), fine step attenuator
(Option FSA), and noise floor extensions (Option NFE) are included as standard
options. The standard instrument is a benchtop configuration, however,
Keysight offers an optional portable configuration (Option PRC) that has a
rotational bail handle and added rubber feet for protection. Security feature
options are also available.
Additionally, a snap-on accessory pouch to house the external USB
preamplifier, noise source(s), and adapters are provided.
An external simulated LO to the input of a frequency translating device can be
achieved by connecting to a Keysight signal generator over LAN, USB, or GPIB.
LO control is adjusted from the NFA.
14 Keysight NFA Series Noise Figure Analyzers Service Guide