Intel 1000BASE-T User Manual

100Base-TX Transmitter Return Loss
1000BASE-T/100BASE-TX/10BASE-T Physical Layer Compliance Tests Manual
42 Intel Confidential
Figure 11-1. Test Setup for 100BASE-TX Transmitter Return Loss
2. Turn on the network analyzer and let it warm up for five to ten minutes.
3. Reset network analyzer to factory default settings.
4. Select the S11 measurement parameter (if necessary).
5. Configure the network analyzer as shown in Table 11-1.
6. Disconnect the test fixture, but keep it close to the UUT.
7. Perform a 1-port, full calibration with an open, short, and 100 Ω load by connecting the
calibration fixture to the RJ-45 connection in place of the UUT.
UUT
RJ-45
Network/Spectrum
Analyzer
Cat-5 Cable
50 Ohm BNC
RJ-45
50
Ohms
100
Ohms
Transmission/Reflection Test Set
50 Ohm Termination on
unused balun
100
Ohms
50
Ohms
Table 11-1. Network Analyzer Settings for Transmitter Return Loss
Analyzer Parameter Setting
Start Frequency 1 MHz
Stop Frequency 101 MHz
Display Scale 5 dB/division
IF or Resolution
Bandwidth
100 Hz
Triggering Continuous
Display Points 401 (or as high as possible)

Intel 1000BASE-T Specifications

General

Brand	Intel
Model	1000BASE-T
Category	Adapter
Language	English