User's Manual

5.8GHz PDH User’s Manual
16
Summary of HDB3 encoding rules
Transmitted Data HDB3 Encoded Pattern
0 0
1 Alternate Mark Inversion (AMI)
0000 000V (three 0's and a violation)
0000 0000 B00V B00V
HDB3 is one of CCITT’s recommended uses.
Example 1 of HDB3 encoding
The pattern of bits
" 1 0 0 0 0 1 1 0 "
Encoded in HDB3 is
" + 0 0 0 V - + 0 "
(the corresponding encoding using AMI is " + 0 0 0 0 - + ")..
Example 2 of HDB3 encoding
The pattern of bits
" 1 0 1 0 0 0 0 0 1 1 0 0 0 0 1 1 0 0 0 0 0 0 "
Encoded in HDB3 is " + 0 - 0 0 0 V 0 + - B 0 0 V - + B 0 0 V 0 0 " which is:
" + 0 - 0 0 0 - 0 + - + 0 0 + - + - 0 0 - 0 0 "
(the corresponding encoding using AMI is " + 0 - 0 0 0 0 0 + - 0 0 0 0- + 0 0 0 0 0 0 ").
For example: modifying E1 transmitted HDB3 code to AMI code
1. Enter IDU Info/Code: sub-menu. Press OK.
2. Press the Right/Left button to change HDB3 to AMI. Press OK.
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