Teledyne LeCroy QPHY-SAS3 - Manual (Page 17)

QPHY-SAS3 Software Option
QPHY-SAS3 VARIABLES
Use the Upper (A) or Lower (B) Input
For oscilloscope with 2 inputs per channel, this variable allows the user to decide whether to use the A or
B input to run the selected tests. The default value for this variable is InputA.
Bitrate for SAS3
This variable allows the user to specify the bitrate that is being used for testing. The default value for this
variable is 12e9.
JTF Damping
When defining a custom 2-pole PLL this variable allows the user to specify the JTF Damping factor. The
default variable for this variable is 0.85.
JTF Natural Frequency
When defining a custom 2-pole PLL this variable allows the user to specify the JTF Natural Frequency.
The default variable for this variable is 4.2e6.
JTF Pole Frequency
When defining a custom 1-pole PLL this variable allows the user to specify the JTF Pole Frequency. The
default variable for this variable is 5.5e6.
JTF Zero Frequency
When defining a custom 1-pole PLL this variable allows the user to specify the JTF Zero Frequency. The
default variable for this variable is 50e6.
Demo Mode
This variable allows the user to run the tests in demo mode. When you set this value to “Yes,” you can run
the tests in demonstration mode using saved waveforms. The waveforms must be located in the Saved
Waveform Path. During demo mode, the user is still prompted with connection diagrams based on their
other variable selections. This allows the user to experience running the test as it would be run on live
signals. The default value for this variable is “No”.
Is device either a Target or Initiator
This variable allows the user to specify if the device being tested is a target or initiator. This is used to
generate the proper connection diagram. The default value for this variable is Target.
Matlab Path
This variable allows the user to define the path for EyeOpening script and associated files. These files are
included with the QPHY-SAS3 installer but can be manually replaced by the user. The default value for
this variable is C:\Program Files (x86)\LeCroy\XReplay\SAS3\EyeOpening.
Matlab Startup Path
This variable allows the user to define the path for the startup.m file which allows Matlab to communicate
with the oscilloscope and is automatically by QPHY-SAS3 each time the software is run. This “startup
path” is the actual startup path from the Matlab installation and can be stored in different locations
depending upon where Matlab was installed. The default value for this variable is C:\Program
Files\MATLAB\R2013b\toolbox\local. Note: make sure this path is not set to “read only”
Which port (A or B) is Being Tested
This variable allows the user to specify if the port being tested is the primary or secondary port. This is
used to generate the proper connection diagram. The default value for this variable is Secondary.
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