E5080B Method of Implementation (MOI) for 100BASE-TX Ethernet Cable Assembly Compliance Test

Revision

Comments

Date

1.0

First draft for E5080B series

30-Nov-2020

Description

Test Equipment

Qty

Network Analyzer

Keysight Network Analyzer:

(4-port test set with at least 4.5 GHz frequency range) Note: The 100BASE-TX Ethernet cable specification required the frequency range up to 100 MHz)

•    E5080B-440/460/490/4D0/4H0/4K0 or

•    P5020/21/22/23/24 (Opt.400 4-Ports)

Note: Ensure that E5080B firmware revision is at least version A.14.10 or above (Windows 10)

1 ea.

Software

S9x011A/B Enhanced time-domain analysis with TDR * Selection is based on the VNA platforms. x=6 for ENA, x=7 for Streamline USB, x=5 for PXI

1 ea.

ECal or Mechanical

Cal Kit

N4433 4-Ports Electronic Calibration (ECal) Module or 85052D Economy Mechanical Calibration Kit

1 ea.

Test Fixture

Test Fixture for Ethernet Application.

• N5395C Ethernet 10/100/1G Transmitter Electrical Test

Fixture for N5392B/C 10/100/1G Compliance Application.

2 ea.

Adapter 

(for E5080B only)

Coaxial straight Female-SMA Female-SMA 50-Ohm adapters (Keysight 1250-1666).

4 ea.

RF cable

3.5 mm or SMA cables of 4 GHz bandwidth or more (EG:

5062-6691)

* Y1740A-100 (3.5-mm m-m, 36 inch) cable is recommended for USB and PXI VNA.

4 ea.

Terminator

50-ohm terminations to terminate unused channels.

12 ea.

Steps

Procedure

Step 1

The VNA should be powered on and allowed to warm up - recommendation is for 24 hours prior to measurement.

Step 2

Set measurement conditions by recalling a state file or manual setup.

Step 3

Connect Ethernet 10/100/1G Test fixture to test ports of the VNA.

Step 4

For Time Domain Measurements, perform Electronic Calibration (ECal) and Fixture Compensation.

Step 5

For Frequency Domain Measurements, perform Electronic Calibration (ECal) and Auto Port Extension.

Step 6

Perform Time Domain Measurements

• Differential Characteristic Impedance

Step 7

Perform Frequency Domain Measurements

•    Differential Insertion Loss

•    Differential Return Loss

•    Differential Near-end Crosstalk (NEXT)