Overall Accuracy
Keysight 537A Operating Note
19
Overall Accuracy
Specification for the 537A: 0.17% overall accuracy.
Description
A sweep oscillator, 537A under test, detector, and oscilloscope are connected in series. The sweep
oscillator is set to AF to sweep the band in question. The 537A is set to the frequency in question
and the notch located on the trace. The sweep oscillator is set to CW and adjusted to the center of
the absorption notch of the 537A. The frequency of the sweep oscillator is measured with a counter
and compared with the specifications in
. The sweep oscillator is set to automatic sweep
and the notch depth across the band is checked.
Figure 3
Overall accuracy test setup
Table 5
Test instruments
Instrument type
Suggested Keysight model
Frequency range (GHz)
Sweep oscillator
8620C mainframe
(with appropriate RF plugins)
86222A/B
86235A
86240C
86245A
0.5 to 2.4
1.7 to 4.3
3.6 to 8.6
5.9 to 12.4
Directional coupler
779D
Crystal detector
423A
Oscilloscope
1740A
Counter
5342A
Содержание 537A
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