finishing early -- beam blanking issues

Byoungil Lee bilee at
Wed May 28 05:21:11 PDT 2008

It's a problem caused by a switch in the controller box.
The switch called 'ebeam' should be up position, but sometimes it's 
mysteriously switched down...
It was okay until 3am today.


----- Original Message ----- 
From: "Salman Latif" <slatif at>
To: "Raith SNF Mailing list" <raith at>
Sent: Wednesday, May 28, 2008 5:15 AM
Subject: finishing early -- beam blanking issues

> The beam blank button seemed to be in reverse mode. I could see the  SEM 
> image in the off mode, and vice versa. More importantly, the beam  would 
> not stay blanked during a move from one position to another  (whether you 
> turn the blanker on or off). I shut down both computers,  and after 
> starting up again, could not see the SEM image at all.

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