PMD Scan:
This function set uses the quasi-continuous PMD generation mode to generate two types
of PMD scans. The PMD trace scan creates a continuous PMD variation at a user-
selectable rate of change. The local PMD scans generate a series or grid of PMD values
with user-selectable DGD and/or SOPMD boundaries and step sizes.
PMD Trace Scan:
This function generates continuous PMD traces along one of the characteristic curves in
PMD space. Each trace is a demi-arc of a characteristic curve.
The user can select a series of traces to be generated. As each trace is configured, it is
added to the trace list in the upper left corner of the screen and to the graph on the right
side of the screen.
To add a trace to the list, go to the trace setting block in the middle left of the screen.
Select a DGD value in the “Start DGD” box. This is the trace endpoint on the DGD axis
(with SOPMD = 0). The DGD and SOPMD values corresponding to the other endpoint
will automatically update as the start DGD is changed. Clicking the “Add Trace” button
adds the trace to the trace list and the graph.
To delete a trace from the list, click on it in the trace list to highlight it, then click the
“Delete Trace” button in the middle left section of the screen.
Document #: GP-UM-PMD-1000-21
Page 73 of 122
