1000BASE-T/100BASE-TX/10BASE-T Physical Layer Compliance Tests Manual
Intel Confidential 85
10Base-T Transmitter Output Timing Jitter without Cable Model
22 10Base-T Transmitter Output Timing
Jitter without Cable Model
ANSI Section 1411.10.13
22.1 Test Purpose
To verify the jitter added by the UUT when directly driving a 100 Ω resistive load.
22.2 Specification
The jitter added to the signal on the DO circuit as it propagates through the UUT, driving a 100-
ohm resistive load, shall be no more than 11.0 ns.
22.3 Test Equipment
•
Digitizing Oscilloscope (100 MHz or greater bandwidth)
•
Differential Probes (100 MHz or greater bandwidth)
•
CAT 5 twisted pair cable (under 2 inches in length)
22.4 Test Fixtures
•
100 Ω UTP test load (Appendix A.1)
22.5 Test Procedure
1. Insert CAT 5 cable into UUT and attach differential probe to the test load as shown in
Figure 22-1.
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