Instrument Noise Figure - Agilent Technologies NFA Series Performance Verification And Calibration Manual

NOTE
Test Descriptions

Instrument Noise Figure

Instrument Noise Figure
Test Description
A noise source is connected to the NFA's input. The instrument then measures its
own uncorrected noise figure. For test purposes the NFA is tested at the most
accurate 20-26°C performance specification.
Test Specification
N8973A
10 MHz to 3000 MHz
N8974A and N8975A
10 MHz to 3000 MHz
>3000 MHz to 13200 MHz
>13200 MHz to 26500 MHz
Specifications covering the frequency range of 10 MHz to 3000 MHz are referenced
to 0 MHz. To calculate the specification for any given frequency point within this
range simply multiply the frequency by the corresponding dB/MHz value and add
the initial dB value.
For example:
Frequency = 1500 MHz
Specification = 1500 * 0.00117 + 4.4dB = <6.155 dB
72
< 4.4dB +0.00117dB/MHz
< 4.4dB +0.00117dB/MHz
<10.5dB
<12.5dB
Chapter 2