Instrument Function
R&S
®
SMBV100A
193Operating Manual 1176.8016.02 ─ 17
This criterion terminates the measurement relatively quickly if the error rate is high.
The measurement result is statistically reliable, since many errors were already coun-
ted.
If the measurement is terminated because the set number of bit errors was reached,
"Number of Errors" appears to the right of "Terminated By".
Remote command:
:BERT:SETup:MERRor on page 540
PRBS
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 auto-
matically when the PRBS is selected. "Data Polarity" remains unaffected.
Remote command:
:BERT:SETup:TYPE on page 541
Data Polarity
Sets the polarity of the feedback data bits.
Note: Standard-compliant data inversion for PRBS15 and PRBS23 is performed auto-
matically when the PRBS is selected. "Data Polarity" remains unaffected.
"Norm"
High level stands for logic 1, low level for logic 0.
"Inv"
Low level stands for logic 1, high level for logic 0.
Remote command:
:BERT:SETup:DATA[:POLarity] on page 538
Clock Slope
Sets the polarity of the active slope of the feedback clock.
"Pos"
The positive slope of the clock signal is active.
"Neg"
The negative slope of the clock signal is active.
Remote command:
:BERT:SETup:CLOCk[:POLarity] on page 537
External Restart
Activates an external restart of the BER measurement, see Chapter 5.4.7, "Restart
Function", on page 186.
Bit and Block Error Rate Measurements
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