CONNECTORS FOR ELECTRONIC EQUIPMENT - TESTS AND MEASUREMENTS - PART 25-1: TEST 25A - CROSSTALK RATIO
International Electrotechnical Committee
FOREWORD
1 General
1.1 Scope and object
1.2 Definitions
2 Test resources
2.1 Equipment
2.1.1 Method A, time domain
2.1.2 Method B, frequency domain
2.2 Fixture
2.2.1 Specimen conductor assignments
2.2.2 Termination
2.2.3 Crosstalk
2.2.4 Insertion technique fixture
2.2.5 Reference fixture technique
3 Test specimen
3.1 Description
3.1.1 Separable connectors
3.1.2 Cable assembly
3.1.3 Sockets
4 Test procedure
4.1 Method A, time domain
4.2 Method B, frequency domain
5 Details to be specified
5.1 All tests
5.2 Time domain only
5.3 Frequency domain only
5.4 Additional recommended fixture specifications by
the referencing document
6 Test documentation
Annex A (normative) Diagrams and schematics of fixtures
and equipment
Annex B (informative) Practical guidance
Figure 1 - Waveform
Figure A.1 - Technique diagrams
Figure A.2 - Single-ended terminations
Figure A.3 - Differential (balanced) terminations
Figure A.4 - Far-end crosstalk, balanced terminations
Table 1 - Recommended measurement system rise time
(including fixture and filtering)
Applicable to interconnect assemblies, such as electrical connectors, sockets and cable assemblies. Describes test procedures for measuring the magnitude of the electric and magnetic coupling between driven and quiet lines of an interconnect assembly.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | SC 48B |
