Important Features that You need to be aware when buying
noise figure measurement equipment.
Noise Figure Measurement - A Practical Approach
Important Features That You Need To
Look For When Buying Nf Measurement Equipment
7. Important Features that you need
to look for when buying NF measurement equipment:
Measurement Frequency Range: Ensure that the NF
measurement frequency range is covered completely. If
not, you may need to use external signal generators
and mixers to down-convert the signals before making
noise figure measurements. Measurement frequencies up
to 26.5 GHz in a single instrument is recommended if
you will be using the equipment for Ku band frequencies.
Ensure that the NF analyzer can accurately measure
the desired NF. For example, if you need to measure
a fraction of a dB of noise figure, you may need to
buy NF analyzers that are specifically built for measuring
NF. Methods such as Gain Method use spectrum analyzers
for NF measurement, and do not provide accurate and
Consider local support. The equipment may need to
be calibrated once a year. A local calibration facility
for the equipment is recommended. Normally for a new
instrument, manufacturer assures measurement accuracies
for the first 3 years. Please consult respective manufacturers
before buying the equipment.
Accessories: Normally, you need several accessories
along with the main instruments. Some of the accessories
that you may need to plan before making a purchase decision
Connector adapters such as coaxial to coaxial
or coaxial to wave guide adapters
Attenuators, it is recommended to procure precision
attenuators with wide frequency range (typically
10KHz to 26.5GHz).
Noise Source with calibrated ENR table. Normally,
the ENR table is stuck on to the device itself.
Any other components such as frequency mixers
Manuals: It is necessary that the manuals are provided
with the equipment. Several equipment have specific settings
to be made before making any measurements. Without a product
manual, the task becomes very difficult.
Ease of Use: Flexible, intuitive user interface makes
it easy to make the measurements.