Teledyne LeCroy QPHY-DDR4 - Manual (Page 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