Teledyne LeCroy QPHY-PCIe3-Tx-Rx - Manual (Page 18)

14 923662 Rev B
Add-in Card Rx
This configuration includes two steps.
Step 1 is to perform Rx calibration of the PeRT3 Phoenix by using the CBB3 and CLB3.
Calibration includes the following parameters:

Preset 0-10 plus -6dB De-emphasis/6dB preshoot, and Amplitude

RJ

SJ

Differential Mode Noise

Eye Height and Eye Width
Calibration can be reused for multiple tests. The calibration table is saved under the path:
C:\Program Files (x86)\LeCroy\XReplay\results. All results are saved with time stamped file
name. The file with no time stamp is the latest result.
Within the same session, you will be prompt to run additional RX Tests (i.e., with a different
preset). To use previous calibration results in a new session, uncheck “RX Cal” group. If “Rx
Cal” is unselected, you will be prompted to use the previous calibration.
Step 2 is to perform the actual receiver tolerance test using the calibrated values above. You
will be promoted to select which preset to test with. The test criteria for Rx compliance are to run
BER with the calibrated stressed eye for 2:05 with one or no errors using any preset and pass
10e-4 BER using Preset 7 and Preset 8. If enabled, the script will vary the TX equalization
around the selected preset, if the test does not pass at the selected preset. This should be
enabled for system testing especially.
For 95% confidence level BER testing, the test criterion is to run BER with the calibrated
stressed eye for 6 minutes and 15 seconds, with no errors.
P HYSICAL S ETUP
Figure 6 – Step 1 setup for Preset, Amplitude, RJ and SJ Calibration.