Tektronix OM4006D, User Manual

Page: 88 / 205

Taking measurements
MATLAB Engine fi le
You can con fi gure MATLAB to perform a wide range of mathematical operations
on the raw or processed data using the Engine window. Normally the only call
is to CoreProcessingCommands, the set of routines performing phase and clock
recovery.
NOTE.
To view a complete list of variables, open the MATLAB Command Window
and enter who .
NOTE.
CoreProcessingCommands will provide either ET or RT processing
depending on which mode the OUI is in. To ensure you only get ET processing you
can use CoreProcessingET in the window instead of CoreProcessingCommands.
Similarly you can use CoreProcessing in the Engine Window if you want to be
sure you only get real-time processed data.
As with all other settings, the last engine fi le used is recalled; you can locate
or create another appropriate engine
fi le and paste it into the OUI MATLAB
window. Subsequent chapters explain in detail the operations of Core Processing.
In addition to any valid MATLAB operations you may wish to use, there are some
special variables that can be set or read from this window to control processing
for a few special cases:
64 OM4000D Series Coherent Lightwave Signal Analyzer