Specifications

Frequency Response Above 3 GHz Performance Test
Agilent Technologies
PSA Series Spectrum Analyzers
Test and Adjustment Software
Frequency Response Above 3 GHz
Performance Test
Frequency Response (or flatness) is defined as the amplitude deviation from the reference
value at 50 MHz. The complete E444XA Frequency Response is measured with three
different tests;
● Frequency Response Below 300 kHz
● Frequency Response 300 kHz to 3 GHz
● Frequency Response Above 3 GHz
The Frequency Response Below 300 kHz test is used to verify flatness from 10 Hz to 300
kHz. The 300 kHz normalized error from the Frequency Response 300 kHz to 3 GHz test
is used as the reference point for the Frequency Response Below 300 kHz test.
The Frequency Response Above 3 GHz test verifies flatness from 3.0 GHz up to 50 GHz,
depending on your instrument frequency range.
This test verifies the displayed amplitude vs. frequency over the frequency range from 3.0
GHz to 50 GHz. For each test frequency, the amplitude error is normalized to 50 MHz,
and the result is called Frequency Response. Two sources, and two sets of power sensors
are used to provide the needed frequency range.
The E444XA flatness corrections are located every 100 MHz for frequencies above 3
GHz.
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