EXFO FTB-8100 Series Transport Blazer for FTB-200 - Manual (Page 234)

DSn Tabs
222 FTB-8100 Series Transport Blazer
DS1/1.5M RX
DS1/1.5M RX
Press Main, Test, DSn/PDH, DS1, and DS1 RX.
Configuration
Note: See DS1/1.5M TX on page 219 for more information on Framing.
Error Analysis
Possible errors that can be detected are:
³
Framing Bit: A Framing Bit error indicates that an incorrect value
appeared in a bit position reserved for framing.
³
CRC-6 (Cyclical Redundancy Check): A CRC-6 error indicates that one
or more bit errors have been detected in a block of data through
cyclical redundancy check. CRC-6 is only available with ESF framing.