Agilent Technologies NFA Series, Performance Verification And Calibration Manual

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94 Chapter 3
Technical Specifications
Noise Figure and Gain
Figure 3-2 Characteristic
1
Noise Figure at 23
°
C ± 3
°
C (3.0 GHz to 26.5 GHz)
Max external gain
between noise
source output and
RF input
2
>65 dB
Averaging Up to 999 measurement results
Jitter
3,4
Jitter with no averaging 5 dB Y-factor standard deviation <0.15 dB
1. Characteristic values are met or improved on by 90% of instruments with 90% confidence.
2. Subject to maximum operating input power
3. Specified for a 4 MHz measurement bandwidth. Jitter in noise figure is equivalent to jitter in
Y-factor to within 10% for ENR >14dB and F <4dB. At minimum smoothing, jitter can limit
accuracy; the small jitter at high smoothing does not.
4. For true Gaussian noise, jitter reduces with increased averaging, typically by a factor of
1/
√
(number of averages)