[3dem] Pre-Specimen Shutter (Yu, Xiaodi [JRDUS])

Tue Jun 23 18:19:26 PDT 2020

Can anyone explain the difference between Gun Deflector (beam blanker) and Gun Blanker (pre-specimen shutter)?
Gun Blanker sounds either like a mechanical shutter hardware option not installed; or part of the Gun Deflector - but then why is it a separate device in the microscope control software?

Grateful for any explanations!
Teige

On 24 Jun 2020, at 02:02, Jason Kaelber <jason.kaelber at rutgers.edu<mailto:jason.kaelber at rutgers.edu>> wrote:

This email from jason.kaelber at rutgers.edu<mailto:jason.kaelber at rutgers.edu> originates from outside Imperial. Do not click on links and attachments unless you recognise the sender. If you trust the sender, add them to your safe senders list<https://urldefense.com/v3/__https://spam.ic.ac.uk/SpamConsole/Senders.aspx__;!!Mih3wA!VFParMj59ZHBcjRq4bZfapb6-MrwsKanClm_O9bCr_8yFnjrCicS3CNQKZ0L4R0o_Q$ > to disable email stamping for this address.

Hello Xiaodi,
The Blanker/Shutter Monitor window is showing what you would expect it to show if everything is working. When the deflector coil (pre-specimen shutter) is displayed as orange (N/A), the Blanker/Shutter Monitor window does not know the instantaneous state because it is controlled by the camera.
Unfortunately you would also see the orange if it's almost working but the camera is not controlling the blanking correctly (very rare).
Cheers,
Jason

*******************
This email originates from outside Imperial. Do not click on links and attachments unless you recognise the sender.
If you trust the sender, add them to your safe senders list https://urldefense.com/v3/__https://spam.ic.ac.uk/SpamConsole/Senders.aspx__;!!Mih3wA!VFParMj59ZHBcjRq4bZfapb6-MrwsKanClm_O9bCr_8yFnjrCicS3CNQKZ0L4R0o_Q$  to disable email stamping for this address.
*******************
_______________________________________________
3dem mailing list
3dem at ncmir.ucsd.edu<mailto:3dem at ncmir.ucsd.edu>
https://mail.ncmir.ucsd.edu/mailman/listinfo/3dem

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.ncmir.ucsd.edu/pipermail/3dem/attachments/20200624/aeb3b501/attachment-0001.html>