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<== Date ==> <== Thread ==>

Subject: Re: Problem with AreaDetector and Eiger External Series?
From: Jesse Hopkins via Tech-talk <tech-talk@aps.anl.gov>
To: "Zhang, Zhan" <ZhanZhang@anl.gov>
Cc: "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Wed, 26 Jun 2019 11:03:28 -0500
Hi Zhan,

Thanks for the response. The behavior I expected was for the detector to go to a disarmed state after taking the total number of images expected (number of images * number of triggers). I just tested, and the Eiger doesn't respond to additional triggers until I click the 'Stop' button followed by the 'Start' button (i.e. rearm it). This makes sense to me, since I explicitly set the number of triggers. I just wasn't expecting to have to manually stop it after each exposure set, I expected that to happen automatically once it took all the expected images.

All the best.

- Jesse

----
Jesse Hopkins, PhD
Beamline Scientist
BioCAT, Sector 18
Advanced Photon Source


On Wed, Jun 26, 2019 at 10:52 AM Zhang, Zhan <ZhanZhang@anl.gov> wrote:

Hi Jesse,

                I don’t have an Eiger but for the Andor3 we use, that’s the same behavior I observe.  And that’s what I expected, too.  The ‘Acquiring’ is on means it is ‘armed’ and ready to response to any trigger.  All I need to do is send another set of triggers (or TTL’s in my case).  My detector is always in ‘Acquiring’ mode unless I need to change parameters.  I don’t have trouble to start another series of exposure—I don’t need to hit ‘Acquire’ button any more, just sending the trigger.  Was that what your Eiger failed? 

 

Zhan

---------------------------------

Zhan Zhang, Ph. D.

Argonne National Laboratory

X-ray Science Division, 438-D005

9700 S. Cass Ave.

Argonne, IL 60439

Tel : 630-252-0863

Email: zhanzhang@anl.gov

 

 

 

From: tech-talk-bounces@aps.anl.gov <tech-talk-bounces@aps.anl.gov> On Behalf Of Jesse Hopkins via Tech-talk
Sent: Wednesday, June 26, 2019 10:07 AM
To: tech-talk@aps.anl.gov
Subject: Problem with AreaDetector and Eiger External Series?

 

Hi,

 

We have an Eiger X 500K. I'm using AreaDetector to control it, and encountering a strange issue with the External Series trigger mode. I set the trigger mode to external series, and 'Start' collection. If I then send an external trigger, the series collects as expected. I can watch NumImagesCounter_RBV increment, and it reports the right number of images collected. However, after all the images are collected, Acquire stays 'Collecting'. In order to take another series I have to first click the 'Stop' button. Additionally, the StatusMessage_RBV stays as 'Waiting for external trigger' until I click the 'Stop' button.

 

This is in contrast to the Internal Series behavior, where at the end of a series Acquire goes to 'Done' as I would expect.

 

I don't know if this is a bug, or expected behavior based on a setting I haven't found somewhere. Insight would be appreciated. I did look through the release notes for ADCore 3.5 and 3.6 and the Eiger driver 2-7 and didn't see anything that indicated this was fixed (if it is a bug).

 

ADCore version: 3.4.0

Driver version: 2-6 (though the GUI is reporting 2-5?)

Eiger firmware version: 1.6.6

SIMPLON API version: 1.6.0

GUI: MEDM

Series settings (for testing): Images: 10, Triggers: 1, Exp time: 2 s, Exp Period: 2.1 s

 

Thanks. 

 

- Jesse

 

----

Jesse Hopkins, PhD

Beamline Scientist

BioCAT, Sector 18

Advanced Photon Source


References:
Problem with AreaDetector and Eiger External Series? Jesse Hopkins via Tech-talk
RE: Problem with AreaDetector and Eiger External Series? Zhang, Zhan via Tech-talk

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