EXFO FTB-1, User Manual

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Test Results
312
FTB-700G/800 Series
Alarms/Errors
Error

BPV (
Bipolar Violation), available with DS1 and DS3, pulses of the
same consecutive polarity were detected, in violation with the bipolar
signal format.

BPV/CV (Bipolar Violation/Code Violation), available with STS-1e and
STS-3e, pulses of the same consecutive polarity were detected, in
violation with the bipolar signal format.

CV
(Code Violation)
For E1, E3, E4, STM-0e, and STM-1e: Pulses of the same consecutive
polarity were detected, in violation with the bipolar signal format.
For CPRI Framed L2: Invalid 10B code word received.

K30.7
, for CPRI Framed L2, code word /V/ with Error_Propagation
ordered_set received.

EXZ
(Excessive Zeros):
For DS1 with AMI Line Coding , more than 15 consecutive bit periods
with no pulses have been received.
For DS1 with B8ZS Line Coding , more than 7 consecutive bit periods
with no pulses have been received.
For DS3 , more than 2 consecutive bit periods with no pulses have been
received.