STS2 RF Generator Overheating -- Use Forward Power Mode

[Jim McVittie]

STS2 Users, 

The rf generator for the coil appears to be overheating. The symptom is
that the matching networking stops being able to get a reasonable match
after 10 min or so into a run. You can see the problem if you trace the
forward and reflected power during a run. For now the solution is to keep
the max power at or below 2500W to set the coil generator to "forward"
mode. On Monday, I will looking at the generator cooling to see if it is
the cause of the problem.

   Thanks, Jim 
 -- 
--------------------------------------------------------------
James (Jim) P. McVittie, Ph.D.	        Sr. Research Scientist 
Paul G. Allen Building                  Electrical Engineering
Stanford Nanofabrication Facility       jmcvittie at stanford.edu
Stanford University             	Office: (650) 725-3640
Rm. 336X, 330 Serra Mall		Lab: (650) 721-6834
Stanford, CA 94305-4075			Fax: (650) 723-4659