Teledyne LeCroy Sierra M122 User Manual - Manual (Page 203)

Sierra M122 SAS/SATA Protocol Analyzer User Manual 201
TxRxVout & Preemphasis Teledyne LeCroy
Figure 3.132: Advanced Probe Setting Dialog
4. To see the Target values, click Cancel on the Advanced Probe Setting dialog .
5. Select T1 on the Rx/Tx Setting dialog (see Figure 3.133 on page 201 ), and then click
the Advanced button (no need to re‐read the values).
6. Manipulate the "Pre‐emphasis first" and "Pre‐emphasis pre‐tap" fields by making
small changes to the values achieved by Training (see Figure 3.132 ). This is an
iterative process to eliminate errors. After each value change, press OK to make the
change in the software copy of the value, and then press Apply in the Rx/Tx Settings
(see
Figure 3.133 on page 201 ) dialog to write the new value to the Serdes.
Figure 3.133: Rx/Tx Settings Dialog
Overwrite Tx Settings: Check this box (see Figure 3.133 ) to retain the optimal values
reached through manual calibration every time the link goes through Training due to port
reset, power cycle or disconnection.