Intel 1000BASE-T User Manual

1000BASE-T/100BASE-TX/10BASE-T Physical Layer Compliance Tests Manual
Intel Confidential 77
10Base-T TD Circuit Common-Mode Output Voltage
20 10Base-T TD Circuit Common-Mode
Output Voltage
ANSI Section 1411.10.09
20.1 Test Purpose
To measure and record the common-mode output voltage of the transmitter.
20.2 Specification
Common-mode voltage shall be less than 50 mV peak.
20.3 Test Equipment
• Digitizing Oscilloscope (100 MHz or greater bandwidth)
• Differential Probes (100 MHz or greater bandwidth)
• Computer running Gigconf.exe
20.4 Test Fixtures
Test Fixture 14-14 (Appendix D.6)
20.5 Test Procedure
1. Insert test fixture into the UUT and attach differential probe and BNC cable to common-mode
terminals on the fixture as shown in Figure 20-1.
Note: It is important to pay close attention to the grounding of test fixture 14-14. Inadequate grounding
may lead to erroneous results. All ground connections should be as short as possible and

Intel 1000BASE-T Specifications

General

Brand	Intel
Model	1000BASE-T
Category	Adapter
Language	English