05 | Keysight | N8973B, N8974B, N8975B, N8976B NFA X-Series Noise Figure Analyzer, Multi-touch - Data Sheet

Description

Specifications

Supplemental information

Noise figure

‹ 10 MHz

10 MHz to internal preamplifier’s

Noise source ENR

Measurement range

Instrument uncertainty

4 to 6.5 dB

0 to 20 dB

± 0.02 dB

12 to 17 dB

0 to 30 dB

± 0.025 dB

20 to 22 dB

0 to 35 dB

± 0.03 dB

Gain

DUT Gain range = –20 to +40 dB

‹ 10 MHz

10 MHz to 3.6 GHz

± 0.15 dB

› 3.6 GHz

calibration

Instrument noise figure uncertainty

See the noise figure table above

Instrument gain uncertainty

See the gain table above

Instrument noise figure

See graphs of “Nominal instrument noise figure”; noise

Instrument input match

See “Displayed average noise level (DANL) (with noise floor

extension) improvement” in the Option NFE - Noise floor

extension chapter.

User calibration

Best uncertainties; noise figure uncertainties calculator applies

Uncalibrated

Worst uncertainties; noise of the analyzer input acts as a second stage noise on the DUT

Internal calibration

Available with Option NFE. Good uncertainties without the need of reconnecting the DUT and running a

clibration. The uncertainty of the analyzer input noise model adds a second-stage noise power to the DUT

that can be positive or negative. Running the noise figure uncertainty calculator will usually show that internal

calibration achieves 90% of the possible improvement between the uncalibrated and user calibration states.

1. Refer to NFA X-Series specifications guide for footnote details

2. Online uncertainty calculator at

www.keysight.com/find/nfuc or use the instrument’s built-in calculator.

Nominal instrument noise figure, N8973B, N8974B, N8975B