Teledyne LeCroy QPHY-PCIe3-Tx-Rx - Manual (Page 25)

QPHY-PCIE3-TxRx
Operator’s Manual
923662 Rev B 21
T EST M ODE
This variable can be set to
“AquireNewData” or “UseSavedData”. For RX calibration, this MUST
be set to “AcquireNewData”.
Specific to “TX CEM test” Group
N UM L ANES T X
This variable determines how many lanes will be tested for Tx compliance:

Single lane devices: only lane 0 is tested

Four lane devices: lanes 0 and 3 are tested

Eight lane devices: lanes 0, 3 and 7 are tested

Sixteen lane devices: lanes 0, 7, and 15 are tested
Specific to
“Rx Calibration and test” Group
P E RT3 N AME
This variable will identify the PeRT that is being calibrated. This can be the PeRT's serial
number or any string that can be used to make a folder name for RX calibration results.
P E RT3 A DDRESS
This variable is the hostname or IP address of the PeRT3 Server (the machine that the PeRT is
connected to via USB), from the point of view of the oscilloscope that QualiPHY is
communicating with. So: "localhost" refers to the oscilloscope that QualiPHY is communicating
with, which is not necessarily the machine QualiPHY is running on. The expected configuration
is that the PeRT3 is connected by USB to the oscilloscope, and therefore PeRTAddress should
be set to “localhost”. The script communicates with the PeRT through the oscilloscope.
Specific to
“Rx CEM Test” Group
P ROMPT T O R ESET DUT
True by default. This prompts you to reset or turn off and on the DUT before each attempt to
traverse the state machine to get to Loopback. For many DUTs this is required.
S EARCH A ROUND P RESET
True by default. If this variable is False, then the RX test is only done exactly at the preset you
select, and if it does not succeed then a failure is declared. If this variable is True, then if the
RX test exactly at the preset you select does not succeed, the test varies de-emphasis and
preshoot searching for the best BER and giving your DUT the best opportunity to pass at some
TX EQ settings somewhere close to the selected preset.
SKP_F ILTER [O N |O FF ]
SKP Filter option is needed for testing DUTs operating with the system/add-in card running on
different clock domain than the test equipment. This option can also be enabled for synchronous
test setups where the DUT is enabled to filter SKP symbols.