R&S AFQ100A Operating Manual page 187

R&S AFQ100A
Max. Data Bits
Max. Errors
PRBS
1401.3084.32
Bit Error Rate Measurements - BERT Block
Enter the number of transmitted data bits to be checked before the
measurement is terminated.
This criterion terminates the BER measurement after the specified
number of data bits, even if very few errors or none at all have been
detected. With a low number of bit errors, the measurement result
may be statistically unreliable.
If the measurement is terminated because the number of data bits
entered here was checked, Number of Data Bits appears to the right
of Terminated By.
Data excluded from the measurement by Data Enable or Pattern
Ignore is not counted.
Remote-control command:
BERT:SET:MCO 1000
Enter the number of bit errors to occur before the measurement is
terminated.
This criterion terminates the measurement relatively quickly if the error
rate is high. The measurement result is statistically reliable, since
many errors were already counted.
If the measurement is terminated because the number of bit errors
entered here was reached, Number of Errors appears to the right of
Terminated By.
Remote-control command:
BERT:SET:MERR 1E4
Selects the PRBS sequence. The data generated by the PRBS
generator is used as a reference for the measurement.
Note:
Standard-compliant data inversion for PRBS15 and PRBS23 is
performed automatically when the PRBS is selected. Data Polarity
remains unaffected.
Remote-control command:
BERT:SET:TYPE PRBS15
4.76 E-3