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3
Testing Performance
Test Pod 1 in 500 Mb/s Mode
NO TE
60
If option 500 is not installed on the logic analyzer, then 250 MHz will be the
only speed available. In this case, write "n/a" in the 500 Mb/s mode
boxes in the Performance Test Record and proceed to "Conclude the State
Mode Tests" on page 66.
Clock "Clk1" will be used for testing all pods in the
500 Mb/s mode. Therefore two E5383A Flying Lead Probe
sets will be required when testing the remaining pods.
You will use a test frequency of 125 MHz (plus test margin)
to determine the correct eye in the Thresholds and Sample
Positions dialog. Then you will increase the test frequency to
250 MHz (plus test margin) and perform the test.
Disconnect the E5383A Flying Lead Probe from the last
1
pod tested in 250 Mb/s mode and connect it to Pod 1 of
the logic analyzer.
From the Agilent Logic Analyzer application's main
2
menu, select Setup→Timing/State (Sampling)... or Setup→My
Logic Analyzer-1→Timing/State (Sampling)...
In the State Options section, Sampling Options field,
3
select the "500 MHz" mode. The clock mode will change to
"Both Edges". No other mode is available.
4
In the logic analyzer's Buses/Signals dialog, unassign all
bits.
Assign bits 2, 6, 10, and 14 of Pod 1.
5
Ensure that the Pod 1 threshold is set to 1 volt. See
6
page
46.
16800 Series Portable Logic Analyzers Service Guide
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Troubleshooting
