1000BASE-T/100BASE-TX/10BASE-T Physical Layer Compliance Tests Manual
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1000Base-T Test Fixtures and Calibration Load Fixtures
Appendix A: 1000Base-T Test Fixtures
and Calibration Load Fixtures
Note: When building test fixtures, it is important to remember that an improper or unstable design may
cause measurement errors. Please refer to the IEEE specification for schematics for the needed test
fixtures.
A.1 Fixture 40-25
Test fixture 40-25 terminates each channel with a 100-ohm load. Each Resistor is 100 Ω ±0.1 Ω. A
100 Ω resistor across all four MDI signals must be present at the same time.
Angled side view:
Side and end view:
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