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HDB3 and B8ZS

High density bipolar 3, scrambling techniques.

Mohith N
Updated: 19 March 2026
5 min read

HDB3 and B8ZS Quiz

Test your knowledge of HDB3 and B8ZS zero-suppression scrambling techniques for AMI-based systems.

Question 1 of 3

Q1.HDB3 (High Density Bipolar 3) substitution replaces a sequence of four consecutive zeros with a code word that contains a deliberate bipolar violation. What is the purpose of this violation?