R&S AFQ100A Operating Manual page 327

R&S AFQ100A
BERT:SETup:DATA[:POLarity] NORMal | INVerted
Sets the polarity of the feedback data bits.
NORMal
Parameters:
INVerted
Example: BERT:SET:DATA INV
*RST value
NORMal
BERT:SETup:DENable OFF | LOW | HIGH
Activates/deactivates the use of the Data Enable signal and the polarity of the signal if it is used.
The Data Enable signal marks the data that is actually to be evaluated for the BER measurement.
Any data in addition to the PRBS sequence is masked and thus not evaluated (e.g. sync, preambles,
other channels, etc that are present in the data bits supplied by the DUT).
OFF (Not Used)
Parameters:
LOW
HIGH
Example: BERT:SET:DEN HIGH
*RST value
OFF
1401.3084.32
'High level stands for a logic 1, low level for a logic 0.
'Low level stands for a logic 1, high level for a logic 0.
'sets inversion of data signal.
Resolution Options
Any signal at the Data Enable input is ignored; all data at the BERT data input
is used for the measurement.
The Data Enable signal is used. The only data measured is the data at the
BERT data input during a low level of the Data Enable signal. The
measurement is interrupted during a high level of the Data Enable signal.
The Data Enable signal is used. The only data measured is the data at the
BERT data input during a high level of the Data Enable signal. The
measurement is interrupted during a low level of the Data Enable signal.
'the measurement is interrupted during the low level of the Data Enable input.
Resolution Options
AFQ Commands - Signal Generation
6.66
SCPI
Device-specific
SCPI
Device-specific
E-3