Download 1EF89_Interference_Hunting_FSH

Table of Contents
Table of Contents
1 Why Do We Need Interference Hunting? .......................................... 3
2 Interference Hunting Steps ................................................................ 4
2.1
Detecting the Interfering Signal .................................................................................4
2.1.1
Working with the Spectrogram Function ........................................................................7
2.2
Characterizing the Interfering Signal .........................................................................9
2.2.1
Documenting the Results with R&S FSH4View ..........................................................11
2.2.2
Working with the Interference Analyzer .......................................................................12
2.3
Locating the Interference Source.............................................................................14
2.3.2
Downloading Maps and Loading Them to the FSH .....................................................16
2.3.3
Working with the Triangulation Function .....................................................................17
2.3.4
Working with the Tone Function ..................................................................................22
2.3.5
Working with the Save on Event and the Geotagging Function ..................................23
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3 Common Interference Sources ........................................................ 27
3.1
Noise and Spurious Emissions ................................................................................27
3.2
Harmonics and Intermodulation ...............................................................................29
3.3
Bidirectional Amplifiers ............................................................................................30
3.4
Cable Leakage ............................................................................................................32
3.5
Unlicensed or Wrong Band Operation ....................................................................32
3.6
Jammers and Deliberate Interference .....................................................................33
4 Appendix ........................................................................................... 35
4.1
LTE Frequency Bands ...............................................................................................35
4.2
WCDMA/UMTS Frequency Bands ............................................................................37
4.3
GSM Frequency Bands .............................................................................................38
5 References ........................................................................................ 39
6 Ordering Information ........................................................................ 40
01
Rohde & Schwarz
2