A Setting Up the N5395C Ethernet Transmitter Test Fixture
50 Keysight E6961A User Guide and Method of Implementation
Introduction
Keysight’s N5395C Ethernet 10/100/1G Transmitter Electrical Test Fixture
includes a main test fixture board (N5392-66402), a short RJ-45 interconnect
cable (N5392-61601), and a small Return Loss impedance calibration board
(N5392-66401).
Keysight’s N5395C Ethernet Test Fixture is recommended for the Compliance Test
Mode 4. A different, comparable fixture may be used, but is not guaranteed to
produce the same result.
Notice that the main Test Fixture board is divided into eight sections plus an area
to store jumpers. Not all sections are used in this demo/evaluation. Refer to
Figure A-2 on page 51.
The Return Loss impedance calibration board is Board Section 8. See Figure A-1
below. This board is used for calibrating the ENA. Refer to “Calibrating the ENA”
on page 62. This board is only applicable if your DUT has a RJ45 connector. For
other DUT's that do not have a RJ45 connector, user will need to fabricate a
custom calibration kit.
Table A-1 List of Compliance Test Board Sections
Compliance Test Board
Section
Description Compliance Test Mode Number
1 Differential Return Loss used for RJ45 devices Test Mode 4, Transmitter Distortion Test
2Load & Probes Not Used
3 100BT Jitter Not Used
4 Common Mode Output Voltage Not Used
6 10BT w/o TP Model Not Used
7 10BT with TP Model Not Used
10 Balun used for Power Spectrum Density Test Test Mode 4, MDI Return Loss Test
11 Disturbance/Distortion Test Mode 4, Transmitter Distortion Test
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