<div dir="ltr">Thank you, Robert. <div><br></div><div>Shortly after sending that inquiry, I learned from Biosemi that <span class="gmail-il">Fieldtrip</span> (also Lab Streaming Layer, and other third-party tools whose Biosemi interface was implemented using the Biosemi SDK) are agnostic of ActiveTwo firmware version. The firmware version only affects the communication between the AD-box and the optical receiver / USB interface. The communication between the driver and the acquisition software is the same regardless of firmware version. <div><br></div><div>When time permits, I will have a look at the documentation and do some testing.<br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><br></div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature">Best regards, <br><br>Lloyd Smith <br>President <br>Cortech Solutions, Inc. <br><br><div>E-mail: <a href="mailto:LSmith@cortechsolutions.com" target="_blank">LSmith@cortechsolutions.com</a> <br><div>Tel: 910-362-1143 x202 <div>Cell: 910-431-2811<br></div></div><div><br><div><div><br></div></div></div></div></div></div><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, May 28, 2020 at 3:15 AM Robert Oostenveld <<a href="mailto:r.oostenveld@donders.ru.nl">r.oostenveld@donders.ru.nl</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div style="overflow-wrap: break-word;">Hi Loyd,<div><br></div><div>Welcome on the mailing list! </div><div><br></div><div>The realtime interface to the Biosemi amplifiers was implemented and contributed by FieldTrip users, not by the core team. I recall that it had contributions from two separate groups. Also, we don’t have a Biosemi amplifier, so we don’t use it ourselves and cannot test ourselves.</div><div><br></div><div>If I look at the commit history at </div><div><a href="https://github.com/fieldtrip/fieldtrip/commits/master/realtime/src/acquisition/biosemi" target="_blank">https://github.com/fieldtrip/fieldtrip/commits/master/realtime/src/acquisition/biosemi</a></div><div>and</div><div><a href="https://github.com/fieldtrip/fieldtrip/commits/master/realtime/src/acquisition/biosemi/biosemi2ft.cc" target="_blank">https://github.com/fieldtrip/fieldtrip/commits/master/realtime/src/acquisition/biosemi/biosemi2ft.cc</a></div><div><br></div><div>I see it dates back to 2012 and that later changes mainly relate to streamlining the build process and Makefile. Part of the history details appears to be missing, since it predates the moment when we switched over from an internal Subversion server to GitHub. But most of it seems to be pre-2015, which suggests that it was written for firmware 3.0. I also assume that at the time firmware 4.0 was introduced on new devices, it was still slow to get updated on existing devices, which means that the code changes in 2015 (done by people that were not likely to have a brand-new device) were not related to the new firmware. </div><div><br></div><div>It would be good if the documentation on <a href="http://www.fieldtriptoolbox.org/development/realtime/biosemi/" target="_blank">http://www.fieldtriptoolbox.org/development/realtime/biosemi/</a> (which is maintained <a href="https://github.com/fieldtrip/website/blob/master/development/realtime/biosemi.md" target="_blank">here</a>) would be updated to reflect this. E.g. add a section about the different firmware versions, how to determine yourself which one is installed on your amplifier, etc. Possibly also test it both with a 3.0 and a 4.0 version of the amplifier and report on the results. Editing that page on the website is as simple as clicking on the pencil button on the upper right. </div><div><br></div><div><img id="gmail-m_5584482304471402834110D257-3CE3-495A-BDA2-E2D6A19EF4EE" width="291" height="59" src="cid:1729a11bae75b206ef61"></div><div><br></div><div><div>All contributions are reviewed and stylistically corrected by me or another team member, so don’t worry if the markdown formatting is not totally correct yet.</div></div><div><br></div><div>It would even be better if the source code of the Biosemi real-time interface was reviewed and would be updated to reflect the 4.0 firmware. Changes should be compatible with the 3.0 version, or a a copy of the exiting code should be kept to ensure that researchers with 3.0 version amplifiers can continue to use it.</div><div><br></div><div>I am looking forward to the contribution of Biosemi or Cortech Solutions to improve the researchers’ experience with this hardware.</div><div><br></div><div>best regards,</div><div>Robert</div><div><br></div><div><br></div><div><br></div><div><br></div><div><br><div><br><blockquote type="cite"><div>On 26 May 2020, at 19:42, Lloyd Smith <<a href="mailto:lsmith@cortechsolutions.com" target="_blank">lsmith@cortechsolutions.com</a>> wrote:</div><br><div><div dir="ltr">Hi, all. First time posting here, so please pardon any lack of default knowledge. My company handles US/Canada sales and support for the Biosemi ActiveTwo EEG system, and I know a lot of our customers use Fieldtrip. Until now I have never had a pre-sales question from a customer about Fieldtrip. I was unable to find an answer in your archives, so I am posting it here. <div><br></div><div>In mid-2015, Biosemi released firmware 4.0 for the optical receiver / USB interface. This eliminates the need to install a driver, instead utilizing a driver that ships with Windows 10. Most older ActiveTwo systems can be field-upgraded by end-users according to instructions at
<a href="https://www.biosemi.com/faq/install_USB.htm" target="_blank">https://www.biosemi.com/faq/install_USB.htm</a>. </div><div><br></div><div>Thie page at your site - <a href="http://www.fieldtriptoolbox.org/development/realtime/biosemi/" target="_blank">http://www.fieldtriptoolbox.org/development/realtime/biosemi/</a> - does not mention which optical receiver / USB interface firmware versions are compatible, which leaves open the question of whether firmware 4.0 is supported. Firmware 3.0 shipped from sometime before Spring 2011 until Spring of 2015, but all systems shipped from about June 2015 forward have firmware 4.0, and many older systems have been field-upgraded. <br clear="all"><div><div dir="ltr"><br></div><div>Thanks in advance for any insight!</div><div dir="ltr"><br></div><div dir="ltr">Best regards, <br><br>Lloyd Smith <br>President <br>Cortech Solutions, Inc. <br><br><div>E-mail: <a href="mailto:LSmith@cortechsolutions.com" target="_blank">LSmith@cortechsolutions.com</a> <br><div>Tel: 910-362-1143 x202 <div>Cell: 910-431-2811<br></div></div><div><br><div><div><br></div></div></div></div></div></div></div></div>
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<hr><font size="2">Cortech Solutions, Inc.</font><div><font size="2">1409 Audubon Blvd, Suite B1</font></div><div><font size="2">Wilmington, NC 28403 USA</font></div><div><font size="2"><br></font></div><div><font size="2">Tel: 910-362-1143</font></div><div><font size="2">Fax:</font> 910-378-3443<br></div><div><font size="2"><br></font></div><div><font size="2">Sales: <a href="mailto:sales@cortechsolutions.com" target="_blank">sales@cortechsolutions.com</a></font></div><div><font size="2">Support / repairs: <a href="mailto:support@cortechsolutions.com" target="_blank">support@cortechsolutions.com</a></font></div><div><font size="2">Billing / administration: <a href="mailto:admin@cortechsolutions.com" target="_blank">admin@cortechsolutions.com</a></font></div><div><font size="2"><br></font></div><div><div><font size="2">Web: <a href="http://www.cortechsolutions.com" target="_blank">www.cortechsolutions.com</a></font></div></div><div style="font-size:1.3em"><br></div>