Teledyne-lecroy QPHY-SAS3 Manuale Utente Scaricare il pdf (Pagina 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

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Teledyne-lecroy QPHY-SAS3 Manuale Utente Pagina 24