Instrument Function
R&S
®
SMBV100A
198Operating Manual 1176.8016.02 ─ 17
"Number of Data Blocks"
The measurement stopped after the specified number of data blocks
was reached.
"Number of Errors"
The measurement stopped after the specified number of errors was
reached.
Remote command:
:BLER:RESult? on page 534
State:
Displays the status of the measurement.
A green LED indicates a correct status, red denotes a faulty status.
The function displays the status of the data and clock lines, and of the synchronization.
It allows you to check if the measurement works properly. If the status is faulty, check
the BLER signals at the connectors with an oscilloscope.
"Clock"
The applied clock signal was detected.
"No Clock"
The applied clock signal was not detected.
Possible causes are:
●
Clock recovery is not available (e.g. with tests of RF compo-
nents).
If the signal is generated using the instrument family, the bit clock
can be extracted from the CLOCK output connector (only with
"Custom Dig Mod" signals in real time). If signals complying with
other digital standards are generated or if ARB waveforms are
used, a marker signal can be used as a clock. As the DUT causes
a delay, the ratio of clock-to-data travel times must always be
considered and checked with an oscilloscope if necessary.
●
The wrong impedance for the applied clock rate was selected.
●
The wrong threshold for the applied clock signal was selected.
"Data"
The applied data signal was detected.
"No Data"
The applied data signal was not detected.
Possible causes are:
●
The signal from the DUT is missing.
●
The wrong impedance for the applied clock rate was selected
(see "Impedance" parameter).
●
The wrong threshold for the applied data signal was selected.
"Sync"
The measurement is synchronized.
Bit and Block Error Rate Measurements
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