High-Speed Link Optimizer Tests
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The Link Optimizer is similar to the Apply Settings portion of the GUI and is executed with a script. There
are two versions of the Link Optimizer script provided with the GUI; one for a single-board setup, and the
other for a two-board setup. The two-board script is loaded by default and while it can be used in a single
board setup, the test time takes twice as long because the GUI is trying to configure an entire second
board when the second board does not exist. To change the script, click the folder button next to the Link
Optimizer Provisioning Script Path box and select the single-board script (
Figure 15
). To set this as the
default script, right click the folder button and select the Set Current File as Default Script. It should also
be noted that the scripts configure every channel of the device independently no matter what channels are
implemented. If the channels to be optimized are known, a version of the script can be created that only
configures the channels of concern to further reduce and optimize test time.
Figure 15. TLK10232 EVM GUI High-Speed Link Optimizer Setup
After loading the desired script, press the Run Sweep button to start the test. When this button is pressed,
the GUI takes the first set of parameter values in the configuration array and changes those values in the
GUI’s register configuration memory. The GUI then executes the script responsible for provisioning the
TLK10232 device, reading the error counters to clear them, waiting for the amount of test time entered for
the BER test, and then rereading the error counters to obtain the BER count. Next the GUI stores the BER
values into memory and processes the results. In the Sweep Test Results tab, there is an individual
square pixel generated for each parameter combination in a matrix-of-matrix’s configuration (
Figure 16
).
The square is colored green if there are zero bit errors, yellow if there are bit errors but the maximum
value of the error counter was not exceeded, and red if the maximum error count was achieved in the
counter. Clicking on a square displays the parameter information for that test as well as the number of bit
errors.
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TLK10232 Dual-Channel XAUI/10GBASE-KR Transceiver with Crosspoint
SLLU181 – June 2013
Evaluation Module (EVM) Graphical Users Interface User’s Guide
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