Simulated Eye Diagram

This section describes the procedure of simulated eye diagram using the E5071C with TDR option.

Operation procedure

1. Connect 3.5 mm SMA cables to all test ports.

2. Click the Setup tab.

3. Click the Setup Wizard (under Basic) at Setup area.

4. Set the measurement condition using the Setup Wizard:

   1. Select Deskew (under Error Correction) and click Next >.

   2. Click the Differential 2-Port button, and click Next >.

   3. Click the Deskew button, and click Next >.

   4. Connect the DUT to cables. Click the Measure button, and click Next >.

   5. Set the Rise Time to "35 ps" and select "10-90%" from the Definition drop-down list. When finish, click Apply to save the settings.

   6. Click the Finish button.

5. Click Trace button at the tool bar and select "3" to activate Trace 3.

6. Click Eye/Mask tab.

7. Under the Bit Pattern tab:

   1. Select "PRBS" from the Type drop-down list.

   2. Select "2^7-1 bits" from the Length drop-down list.

   3. Set the One Lv. (amplitude) to "200 mV".

   4. Set the Data Rate to "1 Gb/s".

8. Click the Draw Eye button under Eye Control.

Expected result

Eye diagram (Trace 3) appears at the graph window.

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