Specifications

Gain Compression Performance Test
Agilent Technologies
PSA Series Spectrum Analyzers
Test and Adjustment Software
Gain Compression Performance Test
The test is performed at center frequencies of 50 MHz, 2 GHz and 7.6 GHz (excluding
E4443A). The E444XA Reference Level is set to +10 dBm, the RBW is set to 30 kHz, and
the tone spacing is 3 MHz. The E444XA input attenuator is set to 6 dB to provide
acceptable input VSWR and yet to allow sufficient signal level at the input mixer without
the need of an external amplifier. An input signal is set so that the mixer power is
appropriate for the specification.
The signal amplitude is measured and a second tone is applied to bring the DUT into
compression. The resulting amplitude drop of the first tone is measured. If the amplitude
drop is greater than 1 dB the test result is "Fail". A directional coupler or bridge is used to
combine the tones and provide sufficient source isolation.
Test Equipment
Test Equipment Model Number
E4440A
E4443A, E4445A
E4446A
E4448A
Synthesized Sweeper
(2 required)
83630A/B
83640A/B, 83650A/B
X X
Power Meter E4419A/B X X
Power Sensor 8481A X X
Directional Coupler 87300B X X
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