Analyzing waveforms
8.
To ignore align primitives, select the
Ignore Align Primitives
option button
and specify the primitives using the
keypad or keyboard.
Alignment Primitives are inserted into the
signal by the DUT for purposes of pacing
(keeping transmitter from overrunning the
receiver).
9.
Enter the Maximum consecutive ALIGNs
using the keypad or keyboard.
The maximum consecutive aligns is a design
parameter of the particular device that
indicates how many consecutive aligns are
allowed.
The Test Pattern Setup provides control of the signal test pattern length and the Sync Pattern description. These are often
the most dif
fi
cult settings, because they require knowledge of the signal. The Pattern Length is the number of bits in the
repeating signal being sent to the DUT or oscilloscope by the signal generator or AWG. The Sync Pattern is a 10-, 20-, 30-,
or 40-bit unique pattern in the signal that the error detector uses to align the signal to the acquired comparison pattern. The
Advanced check box just allows you to set the Disparity of each of the Sync Pattern symbols individually. The X means don’t
care. The Preset Setups set these parameters to make the job easier for the common cases.
10.
From the Test Pattern tab, specify the
Sync Pattern, Sync Pattern Polarity, and
the Pattern Length.
11.
From the
Stop Condition
tab, select
the Stop When condition. You can stop
manually, after a preset count or time
that you specify, or on an error.
NOTE.
Use large numbers for bit count
tests. At 6 Gb/s, 60 billion bit tests take
10 seconds.
12.
Select and setup the actions to perform
when the stop condition is met. Using
these actions, you can preserve the
information captured by the oscilloscope.
You must set up the email address and
the SMTP server for Send E-mail to
work.
MSO/DPO70000DX, MSO/DPO70000C, DPO7000C, and MSO/DPO5000B Series User Manual
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