New Operating Instructions for Drytek2

[Nancy Latta]

Attention:

Before you use drytek2 please read the new operating instructions 
located in the blue book.They contain a new, as of 9/8/2011, RF tuning 
procedure.The changes have been underlined to highlight them.

You will notice that the old RF power supply is back.At this time it 
will not go any higher than 400W.Expect etch rates to have decreased.

A new power supply is on order so drytek2 should be able to deliver 500 
total watts.We will let you know when it has been installed.The new 
tuning procedure will remain in place.

In addition, there is a new log form for you to fill out at the end of 
the etch.You will be asked for the coil and cap settings.They can be 
found by looking on the coil and cap tuning pots (the black knobs used 
to tune the RF).We want to collect this information so that users of the 
tool can refer back to the last settings used for a given recipe and 
plug them in to ease the RF tuning procedure.

Lastly, we are requiring the labmembers turn the RF power level to zero 
after using the tool.This will limit wear and tear on the RF power 
supply.We also ask that users tune the RF at a much lower power (40W) 
before turning the RF to the full power desired.This procedure is 
covered in the new operating instructions.

Team Etch

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