Keysight N5990A-301 PCI Express Link Training Suite User Guide
23
Test Instrument Setup
4
Setup with De-Emphasis Box
Figure 9
Setup with De-Emphasis Box
• Connect two N9398C blocking capacitors to RF+DC and RF+DC of
Pick-Up Tees.
• Connect DATA OUT to DE-EMPHASIS DATA IN.
• Connect AUX CLK OUT to DE-EMPHASIS CLK IN using N4916-61620
matched cable pair.
• Connect P2 and P2 BAR of N4903B to Interference Input of Pick-Up
Tees.
• Connect DATA OUT and DATA OUT BAR of N4916B De-Emphasis Signal
Converter to RF and RF of Pick-Up Tees.
• Connect CLK OUT to ERROR DETECTOR CLK IN.
• Connect the N4903B Data Outputs to Rx+ and Rx- of test fixture.
• Connect Tx+ and Tx- of test fixture to N4903B Data Inputs.
• Connect the N4903B TRIG OUT and TRIG OUT BAR to the test fixture
reference clock input pins.
