Keysight NFA Series Performance Verification And Calibration Manual page 110

1
Frequency Range
Measurement
Bandwidth
(nominal)
Frequency
2
Reference
1. The N8974A and N8975A NFA models have a mechanical switch fitted to allow them to switch
between the 10 MHz to 3.0 GHz frequency range and the 3.0 GHz to 6.7 GHz and the 3.0 GHz
to 26.5 GHz frequency ranges respectively. If the frequency range you are working in crosses the
3.0 GHz point, the mechanical switch operates. The mechanical switch has a limited number of
cycles over which it is reliable. To maximize the switches reliable life, switching over the
3.0 GHz switch should be limited where possible.
2. Temperature stability on the Standard Frequency reference is achieved 60 minutes after the
Analyzer is powered on.
Technical Specifications
Frequency
Frequency
N8972A 10 MHz to 1.5 GHz
N8973A 10 MHz to 3 GHz
N8974A 10 MHz to 6.7 GHz
N8975A 10 MHz to 26.5 GHz
N8972A 4 MHz
N8973/4/5A 4 MHz, 2 MHz, 1 MHz, 400 KHz, 200 KHz, 100 KHz
Aging
Temperature Stability
Settability
a. Option 1D5 is recommended for applications requiring high frequency
stability.
b. ppm = parts per million(10
90
Standard
b
< ±2 ppm /year
< ±6 ppm
< ±0.5 ppm
-6
)
a
Opt. 1D5
< ±1 ppm/year
< ±0.01 ppm
< ±0.01 ppm
Chapter 3