[micro-manager-general] Andor iXon+, iXon3 bug?, need help

[Lukas H. <Luk...@im...>]

Hi,

I need help with two Andor cameras.

Two Andor cameras are used in dual view (Multi Camera adapter with 
Andor: iXon+ and Andor: iXon3).
Acquisition is done by a burstAcquisition macro (equal to the script), 
but the described behavior applies also to MDA.
With Frame transfer enabled and at higher Acquisition speeds (binning 2, 
0.9us vertical clock, 20ms exposure, full ROI) i get an buffer overflow.

It appears that the device adapter before 14.April2019 "old" returns 
very quick from mmc.popNextTaggedImage() and therefore produces no 
buffer overflow, while the adapter after 14.April2019 "new" takes a very 
long time to return from this function.
This also occurs with only one Camera in use, but with two cameras the 
return time is to long to handle the data flow.

A second issue is, that with Multi Camera adapter, the camera referring 
to channel 0 (independent which one) stops acquiring after some time 
(~60.000 images in Trigger: software).
This applies to the "old" and the "new" Andor device adapter.

With Multi Camera adapter and external trigger (one source for both 
cameras, Trigger set to External on both cameras), the camera referring 
to channel 0 stops acquiring within 0 to some thousand images)

I don't get any debugging error message with the new adapter.
With the old adapter i get for example: "GetNumberNewImages error: 
first: 3473 last: 3473" for the camera on channel 0 before it stops working.

The goal would be to acquire about 200,000 time points with external 
trigger at 20ms exposure time.

I tried to understand the differences in the code from commits on 
14.April, but I didn't figure out why this makes a difference for the 
popNextTaggedImage() function.
Also: the error message "GetNumberNewImages error:" doesn't make any 
sense to me, referring to the situation that no new images are acquired.

I would be very happy to get assistance on this one.

Software:
AndorDriverPack2 - 2.103.30031.0
Micro-Manager 2.0.0-gamma1 20200222
mmgr_dal_Andor.dll from 1.04.2019, 16.04.2019 and 22.02.2019 (tried many 
many more)

best
Lukas

-- 
____________________________________________
Lukas Hille, M.Sc.
microscopy engineer
Luk...@im...
M +43 660 349 169 3

Department of Neurobiology, University of Vienna
Campus-Vienna-Biocenter 1
1030 Vienna
AUSTRIA

https://neuro.univie.ac.at/
https://www.imp.ac.at/groups/manuel-zimmer/
Part of Vienna BioCenter
www.viennabiocenter.org
____________________________________________