Teledyne LeCroy QPHY-USB3-Tx-Rx - Manual (Page 38)

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917719 Rev A
QPHY-USB3-TX-RX VARIABLES
The variable settings in QualiP HY give the user the ability to customize their QualiPHY configurations. These
variables control what connection diagrams are displayed, what additional equipment can be used, filenames for
external files, address, etc. Detailed descriptions of each variable contained within
QPHY-USB3-Tx -Rx are explained as follows:
Always Reconnect PUT
This variable gives the user the ability to force the PeRT
3
to always reconnect to the PUT aft er each run. The
default value for the variable is “No.” In this state, the PeRT 3
determines if the PUT is in the correct mode
(compliance or loopback) for the next set of tests. When set to “Yes” the PeRT 3
always disconnects and
reconnects to the PUT on every run.
Cable S-Parameters File
This variable allows the user to specify the S-Parameter filename (s4p) used when de-embedding the cables and
fixtures associated with their setup. This variable is only used if the De-embed Cables variable is set to
“Yes.” By
default this variable is blank.
De-embed Cables
This variable allows the user to de-embed the cables and/ or fixturing associated with their setup. Select
“Yes” to
de-embed cables and/or fixturing using the S-Parameter file (s4p) specified in the Cable S-Parameters File
variable. The default value for this variable is
“No.”
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.”
RF Switch GPIB Address
This variable allows the user to select the GP IB address for the Keithley S46 RF S witch that can opti onally be
used with this system. The default value for this variable is
“7.” (This is the default value for the Keithley S46 RF
Switch).
Maximum PeRT3 retries
This variable allows the user to select the maximum number of times for the PeRT
3
to retry to connect the link
before aborting. The default value for this variable is “3.”
Disable Connection Diagrams
This variable allows the user to disable the dis play of connection diagrams . The default for this variable is “No.”
Product Type
This variable allows users to specify if they are testing a Device, Host or Hub. The default for this variable is
“Host.”
Saved Waveform Path
This variable allows the user to specify the path that saved waveforms are recalled f rom when running in demo
mode or when TestMode
is “Use Saved Data.” The default value for this variable is “D:\Waveforms\USB3.”
Save Individual Runs
This variable allows the user to specify if they would like to save the waveforms from multiple runs in the saved
waveform path. When this value is set to
“Yes” waveforms are saved in a separate folder each time the test is run
- for example: D:\Waveforms\ USB3\[Product under te st]\Run1. When set to “No” waveforms are overwritten on
every run and saved in: “D:\Waveforms\USB3\[Product under te st].”