Technical data

How to Set Conversion Factor
The following command sets the conversion factor. Conversion factor is used to
calculate the calculated Bit Error Ratio.
SENS1:SFE:CFAC 10
How to Set Conversion Factor mode
The following command sets the mode of the conversion factor to either automatic
or user defined.
SENS1:SFE:CFAC:MOD AUT | USE
For cBER calculations based on SER, DER, ISR, value for conversion factor in AUTo
and USEr mode is 10. For cBER calculations based on FER and FSR, value for
conversion factor in AUTo mode is the Block Length with Filler Symbols while for
USEr mode, it can be defined.
How to Set Alignment Symbol
The following command sets the alignment symbol for the initial 10b alignment
phase on the error detector's Data In port. The allowed alignments symbols are
K28.1 and K28.5.
SENS1:SFE:ASYM "K28.5"
How to Set Alignment Symbol Mode
The following command configures the settings that control the alignment of the
incoming symbols.
The following settings are available:
• SENSe[1]:SFError:ASYMbol:MODe AUT
enables automatic alignment.
• SENSe[1]:SFError:ASYMbol:MODe MAN
disables automatic alignment and initiates a re-alignment attempt.
• SENSe[1]:SFError:ASYMbol:MODe REAL
re-aligns the symbol alignment, in case, if it is lost.
How to Set cBER Configuration Mode
The following command sets the calculated BER configuration mode. cBER can be
based on SER, FER, FSR, DER and ISR.
SENS1:SFE:CBER:MOD FER
Recommended Programming Techniques 3
Agilent J-BERT N4903B High-Performance Serial BERT 71