37. Gain Compression, HP 8595EM
37. Gain Compression, HP 8595EMThis performance verication test must be performed with the EMC analyzer set in the spectrum analyzer mode.
This performance verication test measures gain compression in both low band and high band. Two signals, separated by 3 MHz, are used. First, the test places a 030 dBm (77 dBV) signal at the input of the EMC analyzer (the EMC analyzer reference level is also set to 77 dBV). Then, a 0 dBm (107 dBV) signal is applied to the EMC analyzer, overdriving its input. The decrease in the rst signal's amplitude (gain compression) caused by the second signal is the measured gain compression.
For the narrow bandwidth part of this test, the signals are separated by 10 kHz, then the rst signal is kept 10 dB below the reference level.
There are no related adjustment procedures for this performance test.
Equipment Required
Synthesized sweeper (two required)
Measuring receiver (used as a power meter)
Power sensor, 50 MHz to 6.5 GHz
Directional coupler
Cable, APC 3.5, 91 cm (36 in) (two required)
Adapter, Type N (m) to APC 3.5 (m)
Adapter, APC 3.5 (f) to APC 3.5 (f) (two required)
Performance Verication Tests