R&S AFQ100A Operating Manual page 188

R&S AFQ100A
Data Polarity
Clock Slope
1401.3084.32
Bit Error Rate Measurements - BERT Block
Sets the polarity of the feedback data bits.
Note:
Standard-compliant data inversion for PRBS15 and PRBS23 is
performed automatically when the PRBS is selected. Data Polarity
remains unaffected.
High level stands for a logic 1, low level for a
Norm
logic 0.
Remote-control command:
BERT:SET:DATA NORM
Low level stands for a logic 1, high level for a
Inv
logic 0.
Remote-control command:
BERT:SET:DATA INV
Sets the polarity of the active slope of the feedback clock.
The positive slope of the clock signal is active.
Pos
Remote-control command:
BERT:SET:CLOC RIS
The negative slope of the clock signal is active.
Neg
Remote-control command:
BERT:SET:CLOC FALL
4.77 E-3