13. Scale Fidelity, HP 8590 EM-Series

13.Scale Fidelity, HP 8590 EM-Series

This performance veri￿cation test must be performed with the EMC analyzer set in the spectrum analyzer mode.

A 50 MHz CW signal is applied to the INPUT 50 ￿ of the analyzer through two step attenuators. The attenuators increase the e￿ective amplitude range of the source. The amplitude of the source is decreased in 10 dB steps and the analyzer marker functions are used to measure the amplitude di￿erence between steps. The source's internal attenuator is used as the reference standard. The test is performed in both log and linear amplitude scales.

Equipment Required

Synthesizer/level generator

Attenuator, 1 dB step

Attenuator, 10 dB step

Cable, BNC, 122 cm (48 in)

Cable, BNC, 20 cm (9 in)

Adapter, Type N (m) to BNC (f)

Adapter, Type BNC (m) to BNC (m)

Additional Equipment for Option 026

Adapter, APC 3.5 (f) to Type N (f)

Figure 2-16. Scale Fidelity Test Setup

Performance Veri￿cation Tests 2-61