
Keysight M8070A Programming Guide
41
Recommended Programming Techniques
2
128/132 Coding
To encode a 128/132 symbol 144 bits (18 bytes) are used.
Table 16
128/132 coding
Bit Offset/Range
Bit (range) Name
Coding-128/132 content
3:0
Framing
Framing bits
131:4
Data
Data
132
Mask
Mask (if present, ignored on DataOut)
133
Squelch
Squelch (if present, ignored on
DataIn)
134
Reset Scrambler
Scrambler reset (ignored on DataIn)
135
Pause Scrambler
Scrambler pause (ignored on DataIn)
136
Bypass Scrambler
Scrambler bypass
137
Bypass Byte 0 Scrambler
Scrambler bypass byte 0
138
Do DC Balancing
Do DC balancing (ignored on DataIn)
139
Reset DC Balancing
Rest DC balancing (ignored on DataIn)
140
Send Scrambler State
Send scrambler state (ignored on
DataIn)
141
Reset Parity
Reset parity (ignored on DataIn)
142
Pause Parity
Pause parity (ignored on DataIn)
143
Start of Frame
Start of frame (ignored on DataOut)