16.Absolute Amplitude Calibration and Resolution (IF) Bandwidth Switching Uncertainties,HP 8590 EM-Series

16.Absolute Amplitude Calibration andResolution (IF) Bandwidth Switching Uncertainties , HP 8590 EM-Series

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

To measure the absolute amplitude calibration uncertainty the input signal is measured after the self-calibration routine is ￿nished.

To measure the resolution (IF) bandwidth switching uncertainty an amplitude reference is taken with the bandwidth set to 3 kHz using the marker-delta function. The bandwidth is changed to settings between 3 MHz and 1 kHz and the amplitude variation is measured at each setting and compared to the speci￿cation. The span is changed as necessary to maintain approximately the same aspect ratio.

Equipment Required

Cable, BNC, 23 cm (9 in)

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

Additional Equipment for Option 026

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

Figure 2-19. Uncertainty Test Setup

Performance Veri￿cation Tests 2-83