1000BASE-T MDI Return Loss
1000BASE-T/100BASE-TX/10BASE-T Physical Layer Compliance Tests Manual
24 Intel Confidential
2. Select the Return Loss: 40.8.3.1 Test on the UUT from the 1000BASE-T PHY Configuration
Tests menu in gigconf.exe.
3. Set the network analyzer to the settings as described below.
NOTE: The Markers should be based on taken measurements. The sample points are recommended and
convenient markers and are not absolutes.
4. Select the calibration menu and perform an S11 calibration using test fixture 40.8.3.1.B
connected to the RJ-45 of fixture 40.8.3.1.C.
At the appropriate prompts choose the open circuit standard, the short circuit standard, and the
100-ohm calibration load. After calibration is completed, ensure that correction is turned on.
Note: once the S11 calibration has been completed, care should be taken to not move the test
setup more than necessary. Changes in the layout of the test setup can change the electrical
characteristics of the setup and lead to erroneous results.
UUT
RJ-45
Fixture
40.8.3.1.A
Network
Analyzer
S11 Port
Fixture 40.8.3.1.C BNC
Table 6-1. Network Analyzer Settings
Setting Value
Analyzer Type Network
Measurement Format S11
Start Frequency 1 MHz
Stop Frequency 101 MHz
Number of Points 401 point (or 801 points)
IF Bandwidth (Resolution Bandwidth) 100 Hz
Reference Position 10
Reference Level 0 dB
Scale 5 dB per division
Limit Lines and Pass/Fail Functions On (if available)
Markers
1 MHz, 16 MHz, 30 MHz, 40 MHz, 60 MHz, 80 MHz,
and 100 MHz
To Next Page
Loading...
Need help?
General