User`s guide

Pattern Match mode has some restrictions and is used to generate a marker when the data has
occasional insertions of bits (idles, for example). Pattern Match mode must also be used with the Bit
Error Counting (BEC) capability in the PM50 utility. The data must be at one of the specific rates in
the “Patn Mkr Standard” pull-down menu such as 1x FC, 2x FC, etc. Additionally the pattern must be
10, 20, 40 bits or divisible by 40. The pattern match word must contain a K28.5 character.
• Press "Perform Placement" to optimize the marker location
• Click on Pulsefind
• Click on Single Acquire
In cases where there are over 20ps of PJ, enable TailFit to determine an accurate RJ. TailFit is located in the
"RJ+PJ Options" menu. Choosing 'All' or 'Auto' may significantly increase test time. To TailFit a fixed number
of points, choose 3, 5, 9, or 17.
If you wish to decrease test time, "Quick Mode" may be used. Use caution when interpreting results with
"Quick Mode" turned on. This mode samples more sparsely and will not show high frequency (HF)
information. Or, if HF content is present, aliasing may occur in the FFT view. Therefore, "Quick Mode"
should not be used unless there is no HF present (near ½ the bit rate).
Possible Errors and solutions
“Failed bit rate calc – bad pattern or signal” or “Failed DCD+ISI Measure – bad pattern or signal”
This error generally indicates that the pattern that the SIA-3000 is measuring at the input channel is not the
same as the pattern chosen. Check that the signal is present and the input pattern matches the chosen
pattern. Press “Perform Placement” in the “Arm Setup” selection to place the marker again.
© WAVECREST Corporation 2005 Section 4 - GigaView
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