Keysight M8000 Series of BER Test Solutions User Guide 579
Utilities 9
This can be used to implement measurement hooks that take the status
information of the instrument into consideration and initiate sequence
branching in dependency of the reported status.
The API to control the instrument may not be used from within the DUT
specific hooks. Doing so will cause error messages when executing the
respective hooks at runtime.
If an API call is resulting in an error (e.g. when reading status bits that
don't exist for a DUT) then an exception is thrown, which finally results in
an error message on the level of the DUT Control Interface script.
Examples
An example of how this can be used to re-train a DUT back into loopback
during a Jitter Tolerance measurement can be found in the Tutorials folder
of the Factory provided DUT Control Interface scripts.
The script is named Retrain_DUT_in_JTOL.py and demonstrates how the
Instrument API can be used to control the sequence in dependency of the
reported status information and bit counter values.
API Summary
The following is giving a quick overview over Instrument control API.
Sequencing Control
M8000.Instrument.Sequence.Restart(groupOrLocationName)
Restart the sequence on the given group or location.
M8000.Instrument.Sequence.BreakAll()
Execute a sequence break, which will influence all sequencers in the
system that are capable of being controlled by the break command.
M8000.Instrument.Sequence.GetBlockNumber(groupOrLocationName)
Reads the current sequence block number from the addressed locations.
Analyzer Control
M8000.Instrument.Analyzer.AutoAlign(groupOrLocationName)
Execute an auto-alignment on the addressed locations.
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