N9935AU/356 uses the Y-Factor technique to accurately verify and characterize the noise figure (NF) of devices. Option 356 has these features:

Five Measurement Types:

• Noise Figure
• Noise Factor
• Gain
• Noise Temperature
• Y-Factor

Four Measurement Setup Types:

• Noise Source
• DUT
• Integration
• Uncertainty

Four Pre-configured DUT Measurement Types:

• Amplifier
• Downconverter
• Upconverter
• Multi-Stage Converter

Uncertainty Contribution Values can be Customized for Your Device:

• Jitter uncertainty
• ENR uncertainty
• Uncertainty bars
• Mismatch uncertainty
• User calibration uncertainty

What are the requirements for Noise figure (NF) Option 356?

Requires spectrum analyzer mode (Option 233 on combination models), internal preamplifier (Option 235) and DC bias variable voltage source (Option 309) as well as CPU2 processor. An external noise source is also required and FieldFox supports Keysight noise source models 346A/B/C/K40/K01. Also recommended to improve accuracy is an external preamplifier Keysight models U7227A/C/F or U7228A/C/F. Requires accessory item N9910X-713 BNC to SMB cable for DC bias variable voltage source to noise source connection.