11
Keysight X-Series Signal Analyzers
PXA N9030A
Functional Tests
2 Displayed Average Noise Level (DANL)
Test Limits (with 0 dB input attenuation)
See Table 2-1 on page 13 for values.
The Displayed Average Noise Level (DANL) of the signal analyzer is measured
across a 10 kHz frequency span at several center frequencies. The analyzer
input is terminated into a 50Ω load. A test is performed to assure the
measurement is not performed in the presence of a residual response. The
measurement is then averaged, and the result is normalized to a 1 Hz
bandwidth.
Figure 2-1 DANL Test Setup
Item
Critical Specifications
(for this test)
Recommended
Keysight Model
Termination, 50Ω Type-N(m)
a
Frequency: 10 MHz to 18 GHz 909A Option 012
Termination, 50Ω 2.4 mm (f)
b
Frequency: 10 MHz to 50 GHz 85138B
a. for Options 503, 508, 513, and 526
b. for Options 543, 544, and 550
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