Subject: Re: finishing early -- beam blanking issues
From: "Byoungil Lee" <>
Date: Wed, 28 May 2008 05:21:11 -0700

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" <>
To: "Raith SNF Mailing list" <>
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.