Agilent Technologies NFA Series Performance Verification And Calibration Manual page 102

Technical Specifications
Noise Figure and Gain
Noise Figure and Gain
Performance is dependent on the ENR
N8973A
N8974A (< 3.0 GHz), N8975A (< 3.0 GHz)
Noise Figure Measurement Range
Instrument Uncertainty
Gain Measurement Range
Instrument Uncertainty
a. For measurement bandwidths below 4 MHz, and spacing between measurement points below
3 MHz, gain uncertainty may increase to a maximum of ±0.7 dB.
N8974A, N8975A (> 3.0 - 26.5 GHz)
Noise Figure Measurement Range
Instrument Uncertainty
Gain Measurement Range
Instrument Uncertainty
a. For measurement bandwidths below 4 MHz, and spacing between measurement points below
3 MHz, gain uncertainty may increase to a maximum of ±0.7 dB.
92
a
a
1. Excess Noise Ratio
1
of the noise source used:
Noise Source ENR
4 - 7 dB 12 - 17 dB
0 to 20 dB 0 to 30 dB
± < 0.05 dB ± < 0.05 dB
-20 to +40 dB
± < 0.17 dB
Noise Source ENR
4 - 7 dB 12 - 17 dB
0 to 20 dB 0 to 30 dB
± < 0.15 dB ± < 0.15 dB
-20 to +40 dB
± < 0.17 dB
20 - 22 dB
0 to 35 dB
± < 0.1 dB
20 - 22 dB
0 to 35 dB
± < 0.2 dB
Chapter 3