Keysight M8000 Series of BER Test Solutions User Guide 423
Setting up Patterns 7
128B/130B Coding
The following figure shows the pattern edit pane with a 128B/130B coded
pattern:
You can use the Settings Window to enhance the visualizations of the
current pattern. For details, refer to Settings Window on page 412.
This type of pattern contain:
• Symbol: 128B/130B coding having 128 bit in one symbol.
• Attributes: It has the following attributes:
• Mask - This attribute only affects the Data In ports.
• Squelch - This attribute only affects the Data Out ports.
• Scrambler Enable - This attribute enables/disables scrambler.
• Scrambler Pause - This attribute is used to pause the scrambler for
some special symbol.
• Scrambler Reset - This attribute is used to reset the scrambler LFSR
(Linear feedback shift register).
• Scrambler Bypass - This attribute is used to bypass the scrambling
over the symbol.
• Scrambler Bypass Byte 0 - If this bit is enabled, it does not allow
scrambling over the symbol.
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