Teledyne LeCroy QPHY-SAS3 - Manual (Page 24)

Figure 14 - Phy Link Rate Stability Test Results
In the Measure section:
• P1 and P2 are used to calculate the min and the max of F2. These are the measured values for Tx
– Min Phy Link Rate Stability (5.3.1) and Tx – Max Phy Link Rate Stability (5.3.1). These
values must be between +/- 100ppm in order to pass this test.
Tx 5.3.2 Common Mode RMS Voltage (CJTPAT)
The purpose of this test is to verify that the common-mode RMS voltage is within the specification limits.
After the completion of the Common Mode RMS Voltage test the oscilloscope is in the following
configuration:
Figure 15 - Oscilloscope Configuration after the Common Mode RMS Voltage Test
Shown on this screen
• F2 is the Common Mode Trace. This is calculated by summing the two inputs and dividing by 2.
24 922545 Rev A