Tektronix OM4006D, User Manual

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Core processing software guide
Some of the important input variables to CoreProcessing are listed in the Core
Processing function reference section. (See page 91.)
MATLAB functions
The core processing code calls several MATLAB functions, that are key to
processing the signal. A function typically acts on many variables as input, and
produces many variables as an output. A function call has the form:
[OutParam1,OutParam2 ... BoundVals,Alerts] =
FunctionName(InParam1,InParam2 ... BoundVals,Alerts)
Where:
BoundVals is used in block processing mode (See page 87, Block processing .)
It contains information about the tail end of the previous block, and is used to
ensure continuity with the next block.
Alerts is a variable containing status information, typically warnings and error
messages, accumulated from all the functions called so far. (See page 88,
Alerts management .)
The other variables contain the actual inputs and outputs of the function.
While the code of CoreProcessing.m is visible to the user, the code for many
of the functions is not. Each function includes extensive parameter checking
to make sure that the inputs passed to it are reasonable. An error message will
be produced if an input variable is out of range or has missing
fi elds, and the
message says what is wrong. However it is possible to cause an error that cannot
be trapped by having the input variables in the wrong order. Each function has a
detailed description. (See page 91,
Core Processing function reference .) Help text
is available by typing help FunctionName at the MATLAB prompt.
OM4000D Series Coherent Lightwave Signal Analyzer 81