Teledyne-lecroy QPHY-DDR4 User Manual download pdf (Page 50)

Area

After the completion of the Overshoot Area test the oscilloscope is in the following configuration:

Figure 37 - Oscilloscope Configuration after the Overshoot Area 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” Overshoot Area measurement indicated by

t@AreaMax. 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” Overshoot Area measurement indicated by

t@AreaMax. 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.

50 924291 Rev A

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Teledyne-lecroy QPHY-DDR4 User Manual Page 50