Teledyne-lecroy QPHY-DDR4 Instrukcja Użytkownika Pobierz pdf (Strona 52)

After the completion of the SRQ test the oscilloscope is in the following configuration:

Figure 39 - Oscilloscope Configuration after the SRQ test

Shown on this screen:

• Z2 is a zoom of F2, the acquired DQS signal after any probe deskew has been applied. The zoom is

positioned at the location of the “worst case” SRQ R measurement indicated by t@SRQ Rmin. A

trace label is applied on this trace according to the signal name assigned to DQS. This signal is

not measured in this test and is only provided as a visual reference.

• Z3 is a zoom of F3, the acquired DQ signal after any probe deskew has been applied. The zoom is

position at the location of the “worst case” SRQ R measurement indicated by t@SRQ Rmin. A

trace label is applied on this trace according to the signal name assigned to DQ. This is the signal

which is measured in this test.

Figure 40 - SRQ Results

52 924291 Rev A

1 2 ... 47 48 49 50 51 52 53 54 55 56 57 ... 72 73

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Teledyne-lecroy QPHY-DDR4 Instrukcja Użytkownika Strona 52