2006 - Comb Gen Coax Output and System
H. HAIDER1, AUSTRIA, M. DEALESSI2, ITALY
G. KOLB1, AUSTRIA, X.TRANS 2, ITALY
1 ARC Seibersdorf research GmbH
2 TESEO SpA
Starting with a brief overview about theoretical background of the coherence of time- and frequency domain of signals the measurement problematic in detecting the coaxial output signal of a comb generator (RefRad 3000) is described in detail. This shows which parameters have to be considered to avoid invalid results due to unfit measurement settings. Further a novel procedure using a comb generator and an individual antenna coupler is shown which enables a fast, simple and highly repeatable possibility to check the function of RF-antenna receiving systems. All kind of faults affecting the amplitude level at any frequency within the operating range of the checked equipment will be found like problems with the antenna (broken tip-soldering, loose connected radiation elements), connectors, cables, receiving instrument and evaluation software. Such routine checks are an important QM-requirement (e.g. ISO/IEC 17025) to assure measurement quality of typical EMC-labs or all types of environmental EMF measurements. Consequently possible limitations of this system-check are considered.