[3dem] Falcon II uses only half of the 1Gb/s bandwidth.

[Eugene Pichkur]

Hello 3DEM community,

We've noticed that our Falcon II uses only half of the 1Gbps bandwidth to
transfer data from the Camera Support Rack to the Microscope PC (I've
attached a screenshot to illustrate the issue).

Microscope PC runs Windows 7 and we are able to get the full frame rate
(20fps) from the detector, however, it takes ~20s to transfer a typical
movie (40frames, 1.2GB) to the PC which is a very frustrating bottleneck.

Both Falcon II and Ceta are connected through the same 1Gb switch (HPE
OfficeConnect 1420 24G 2SFP), so my guess is that the bandwidth is split
50/50. However, during data collection only Falcon II is used which makes
this limitation pointless, not to mention that Falcon II and Ceta can't be
used simultaneously.

Does anyone have a workaround or any info on the topic?


Thanks in advance,
Eugene Pichkur

National Research Centre “Kurchatov Institute”
Akademika Kurchatova, 1, Moscow, Russia, 123098
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