Intel 1000BASE-T User Manual

1000BASE-T/100BASE-TX/10BASE-T Physical Layer Compliance Tests Manual
Intel Confidential 93
10Base-T RD Circuit Differential Input Impedance (Receiver Return Loss)
24 10Base-T RD Circuit Differential
Input Impedance (Receiver Return Loss)
ANSI Section 1411.11.05
24.1 Test Purpose
To verify the differential input impedance.
24.2 Specification
The return loss shall be greater than or equal to 15 dB from 5 MHz to 10 MHz.
24.3 Test Equipment
• Network Analyzer
• CAT 5 twisted pair cable (under 2 inches in length)
• BNC cable, with 50-ohm characteristic impedance
24.4 Test Fixtures
• Balun Test Fixture with 200 MHz or greater bandwidth (Appendix D.2)
• Load Fixture for Network Analyzer calibration (Appendix A.5)
24.5 Test Procedure
1. Insert CAT 5 cable from UUT into transmitter side of Balun fixture and connect Balun to
Network Analyzer with BNC cable as shown below. Do not connect the CAT 5 cable to the
UUT at this time.
Network Analyzer
~ 2 inch TPE cable
RX
Unit Under Test
(UUT)
TX
Balun
RX
TX
RX
BNC

Intel 1000BASE-T Specifications

General

Brand	Intel
Model	1000BASE-T
Category	Adapter
Language	English