Tektronix OM4006D, User Manual

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Appendix E: Equivalent-Time (ET) oscilloscope operation
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 Command
window. Subsequent chapters explain in detail the operations of Core Processing.
In addition to any valid MATLAB operations you use, there are some special
variables that can be set or read from this window to control processing for a
few special cases:
EqFiltInUse – a string which contains the properties of the equalization fi lter
in use
pHybInUse – a string which contains the properties of the optical calibration
in use
DebugSave – logical variable that controls saving of detailed .mat fi les for
analysis:
DebugSave = 1 in the MATLAB Engine Command window results in two
fi les saved per block plus one fi nal save.
DebugSave = 0 or empty suppresses .mat fi le saves.
Taking measurements (ET)
Click Single in the OUI and observe that the oscilloscope takes a burst of data;
this con fi rms the connection. Using a short record length (such as 2000 points)
to speed up the display, click on Run-Stop to show continuously-updated
measurements.
Use controls in the Home tab to set up the plots and measurements to take, either
using the stored Layout button or by clicking on the particular display format icon
in the Plot Tools bar. (See page 23,
The OM4000 user interface (OUI) .)
OUI overview (ET)
(See page 23, The OM4000 user interface (OUI) .)
OUI Controls panel (ET)
(See page 30, OUI Controls panel .)
The difference between the standard (RT) control panel and the ET control panel
is that the ET OUI adds a
Time/Div control. The Time/Div control is located
below the Run and Single buttons.
142 OM4000D Series Coherent Lightwave Signal Analyzer