This object gives the exponent part of the Pre FEC BER or
correctable BER at any instance of time. It is represented in
powers of 10. The mantissa part is defined in
coiIfControllerPreFECBERMantissa.
Pre FEC BER is the BER of the signal before it undergoes the
FEC algorithm. FEC will correct errors upto a certain
Pre FEC BER beyond which the signal starts becoming
uncorrectable. Knowing the Pre FEC BER helps monitor system
health. Pre FEC BER is expressed in Scientific E notation with
two decimal places
Example: The value -11 represents the exponent value of 10 to
the power of -11.