GE SIGNA Voyager - Page 17

Chapter 7 APPENDIX.......................................................................................................................... 147
1 Glossary...................................................................................................................................... 147
2 MR Site Vibration Test Guidelines...............................................................................................150
2.1 Test Measurements............................................................................................................150
2.2 Equipment (Spectral Analyzer) Set-Up...............................................................................150
2.3 Data Collection................................................................................................................... 151
2.3.1 Ambient Baseline Condition.......................................................................................151
2.3.2 Normal Condition.......................................................................................................151
2.4 Presentation/Interpretation of Results................................................................................ 151
3 RF Shielding Effectiveness and Ground Isolation Testing.......................................................... 157
3.1 Ambient Radio Frequency Interference (RFI).....................................................................157
3.2 Introduction.........................................................................................................................157
3.2.1 Discrete RF Interference............................................................................................157
3.2.2 Broadband RF Interference....................................................................................... 157
3.2.3 Ambient Radio Frequency Interference (RFI) Site Survey........................................ 157
3.3 RF Shielding Effectiveness (SE) and Ground Isolation Test Methods............................... 158
3.3.1 Introduction................................................................................................................158
3.3.2 Test Set-Up for RF Shielded Room ..........................................................................159
3.3.3 Shielding Effectiveness (SE)..................................................................................... 159
3.3.4 Reference Level and Dynamic Range.......................................................................159
3.3.5 Test Equipment..........................................................................................................159
3.3.6 Test Frequency..........................................................................................................160
3.3.7 Measurement Procedure........................................................................................... 160
3.3.7.1 Shielding Effectiveness Measurement..............................................................161
3.3.7.2 Reference Level Measurement.........................................................................161
3.3.7.3 Attenuated Level Measurement........................................................................163
3.3.7.4 Shielding Effectiveness calculation...................................................................164
3.3.8 RF shielded Room Ground Isolation Resistance Measurement Method ..................164
3.3.9 RF Shield Test Report............................................................................................... 165
4 Acoustic Background and Design Guidelines............................................................................. 167
SIGNA Voyager Pre-Installation
Direction 5680008–1EN, Revision 2
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