Test Specification for Eurobalise FFFIS
Test Specification for Eurobalise FFFIS
Test Specification for Eurobalise FFFIS
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Page 14 of 332<br />
SUBSET-085, Issue 2.2.2<br />
November 9, 2007<br />
F1 RECOMMENDED TEST TOOLS AND INSTRUMENTS __________________________ 287<br />
F2 RECOMMENDED HIGH POWER LOW PASS FILTER__________________________ 289<br />
F2.1 CHARACTERISTICS_________________________________________________ 289<br />
F2.2 SUGGESTED IMPLEMENTATION _______________________________________ 290<br />
F2.3 INDUCTOR CHARACTERISTICS ________________________________________ 291<br />
F3 SPECIFIC LOW PASS FILTER CHARACTERISTICS ___________________________ 292<br />
ANNEX G (INFORMATIVE), RECOMMENDED TEST PROCEDURES ____________________ 293<br />
G1 TESTING OF LEU OUTPUT RETURN LOSS_________________________________ 293<br />
G1.1 <strong>Test</strong> Abstract ___________________________________________________________293<br />
G1.2 <strong>Test</strong> Set-up <strong>for</strong> Interface ‘C1’ _____________________________________________293<br />
G1.3 Calibration of the test set-up <strong>for</strong> Interface ‘C1’ _______________________________294<br />
G1.4 <strong>Test</strong> Procedure <strong>for</strong> Interface ‘C1’ __________________________________________294<br />
G1.5 <strong>Test</strong> Set-up <strong>for</strong> Interface ‘C6’ _____________________________________________295<br />
G1.6 Calibration of the test set-up <strong>for</strong> Interface ‘C6’ _______________________________296<br />
G1.7 <strong>Test</strong> Procedure <strong>for</strong> Interface ‘C6’ __________________________________________297<br />
G2 HARMONIC CONTENTS ON THE INTERFACE ‘C6’ LEU OUTPUT________________ 298<br />
ANNEX H (INFORMATIVE), AIR-GAP REFERENCE EQUIPMENT _____________________ 299<br />
H1 GENERAL __________________________________________________________ 299<br />
H2 REFERENCE LOOPS __________________________________________________ 299<br />
H2.1 Reference Loop Design ___________________________________________________299<br />
H2.1.1 Overall Design _______________________________________________________________299<br />
H2.1.2 Loop Structure Mechanics ______________________________________________________301<br />
H2.1.3 Non-conductive Joints__________________________________________________________302<br />
H2.1.4 Printed Circuit Board __________________________________________________________302<br />
H2.1.5 PCB Components _____________________________________________________________302<br />
H2.1.6 Encapsulation ________________________________________________________________303<br />
H2.2 Utilisation of the Reference Loops __________________________________________303<br />
H2.3 Tuning of the Reference Loops ____________________________________________304<br />
H2.4 Calibration of the Reference Loops _________________________________________305<br />
H3 TEST ANTENNAS ____________________________________________________ 306<br />
H3.1 General ________________________________________________________________306
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