Teledyne LeCroy QPHY-SAS3 - Manual (Page 36)

Shown on this screen:
• F4 is a plot of the peak voltage values which correspond to V1-V6, VH, and VL. These are the
values which are used in the calculation of the first set of Rpre, Rpost, VMA, and VHL values in
the Measurement table on the screen.
• F6 is a representation of where V1-V6, VH, and VL occur on the acquired waveform. This waveform
is an average of all instances where the pattern was identified in the acquired waveform. The
beginning section of the waveform is the positive 5-UI portion, the next is the negative 5-UI
portion, and the last portion is the alternating 101.
• EDrRqu is the equalized waveform. Displayed on screen is a zoom of this waveform.
• EDrIn is the differential input waveform before any equalization has been applied. Displayed on
screen is a zoom of this waveform.
Tx Emphasis Ref1 (IDLE_REF1)
The purpose of this test is to verify that Rpre, RPost, VMA, and VHL are within the specified limits for the
reference 1 coefficient settings.
With the transmitter set to its maximum peak voltage the emphasis coefficients for REF1 must be set to:
Figure 31 – IDLE_REF1 Message Box
36 922545 Rev A