Search found 27 matches

by Robbie303
Mon Jul 03, 2023 1:17 pm
Forum: BioSemi Hardware
Topic: Best way to connect a generator to the active electrodes
Replies: 2
Views: 8606

Re: Best way to connect a generator to the active electrodes

If you want to check the gain specifications of the ActiveTwo system, then you can do this with the two-bucket test: You will need the following: - signal generator - 2 passive AgAgCl electrodes that can be connected to the output of the signal generator. - 2 plastic buckets or 2 glass bowls (never ...
by Robbie303
Fri Apr 28, 2023 4:11 pm
Forum: BioSemi Hardware
Topic: Persistent connection issue with New USB2 Receiver (Win11)
Replies: 4
Views: 4849

Re: Persistent connection issue with New USB2 Receiver (Win11)

The USB2 Receiver is always problematic when it comes to the "first time" connection upon unplugging. This is tough because we have to move the computer from one part of the office to another in order to test. I think you do not mean the USB Receiver, but you mean the BioSemi USB Trigger Interface....
by Robbie303
Mon Sep 26, 2022 1:51 pm
Forum: BioSemi Hardware
Topic: ActiView does not work after Windows 10 update
Replies: 2
Views: 15559

Re: ActiView does not work after Windows 10 update

If the BioSemi USB Receiver is not listed in the Device manager, then it might be that it is detected as an unknown device. If you unplug the USB Receiver and plug it in again, then you can see in the Device manager what device is added. I assume that your Receiver was working correctly on this W10 ...
by Robbie303
Mon Dec 20, 2021 2:35 pm
Forum: BioSemi Hardware
Topic: correct way to wire a GSR sensor test?
Replies: 4
Views: 5519

Re: correct way to wire a GSR sensor test?

Coen means that you should press the AgAgCl tips of the CMS, the DRL and 1 of the GSR electrodes together. In practice, this will be difficult, because you may absolutely not use any metals when doing this. When metals will touch the AgAgCl tips, the tip will be contaminated with metal particles and...
by Robbie303
Mon Dec 13, 2021 7:06 pm
Forum: BioSemi Hardware
Topic: Problem with the USB interface
Replies: 3
Views: 4930

Re: Problem with the USB interface

Please check the below 6 points: https://www.biosemi.com/faq/AD-box%20shuts-down%20or%20Acquisition%20stops.htm How is the USB Receiver shown in the Device manager? With or without an exclamation mark? If you have access to another W10 PC, than try the USB receiver on that PC (no drivers are needed,...
by Robbie303
Fri Oct 11, 2019 5:20 pm
Forum: BioSemi Hardware
Topic: Windows 7_ Firmware 4.0
Replies: 1
Views: 7615

Re: Windows 7_ Firmware 4.0

Dear Rahul, You say that you have problems installing the driver for the USB Trigger Interface (stimulation PC), but the link you shared is for the drivers for the USB Receiver (recording PC) The USB Trigger Interface should install the drivers automatically when the PC is connected to the internet....
by Robbie303
Wed Jul 24, 2019 3:29 pm
Forum: BioSemi all other topics
Topic: Disinfection of EEG caps and cleaning of electrodes
Replies: 4
Views: 19450

Re: Disinfection of EEG caps and cleaning of electrodes

Dear Jasna,

Electrode sets with Red Rubber strain relief can be cleaned and handled exactly the same way as the older electrode sets without the Red Rubber.
by Robbie303
Mon Mar 04, 2019 3:23 pm
Forum: BioSemi Hardware
Topic: Odd ~17Hz noise in all channels
Replies: 9
Views: 16469

Re: Odd ~17Hz noise in all channels

No, that is not possible.
Only 1 CMSDRL cable can be inserted at the time.
If you plug -in a P32 set with CMSDRL into the A SCSI connector, than you can not also plug-in a CMSDRL cord into the front CMSDRL input.

Why would you like to use the front CMSDRL cord?
by Robbie303
Tue Feb 26, 2019 4:13 pm
Forum: BioSemi Hardware
Topic: Problem with 32 channel headbox / EKG
Replies: 6
Views: 14668

Re: Problem with 32 channel headbox / EKG

Dear Juliette, First you need to know how many channels are installed in SCSI connector C1-32. You can find out how many hardware channels are installed inside your AD-box by running ActiView. Select the 'Offset' page in ActiView with no electrode sets inserted in the AD-box. When a channel is insta...
by Robbie303
Mon Feb 25, 2019 5:24 pm
Forum: BioSemi all other topics
Topic: Differences between decimater utility and Python
Replies: 3
Views: 11570

Re: Differences between decimater utility and Python

The information on the website describing the filter has been updated:
"A fifth order cascaded integrator-comb (CIC) filter"
by Robbie303
Fri Feb 01, 2019 3:57 pm
Forum: BioSemi all other topics
Topic: ecg
Replies: 6
Views: 13638

Re: ecg

CMSDRL FLAT is the ordercode. There is no image of the CMSDRL FLAT on the website. For EEG we advise Signa gel. For all ECG/EMG/EOG measurements we advise Elefix. The skin on the chest, arms and legs is more difficult to penetrate and make contact with. That is why for ECG/EMG/EOG, a stronger gel is...
by Robbie303
Mon Sep 10, 2018 1:19 am
Forum: BioSemi Hardware
Topic: Intermittent Error 5000
Replies: 3
Views: 11079

Re: Intermittent Error 5000

Dear Juiliette,

Has your USB Receiver got firmware version 4.0?
If not, then please update your USB Receiver to firmware version 4.0 as described here:
https://www.biosemi.com/faq/install_USB.htm

Best regards,
Robert
by Robbie303
Fri Sep 07, 2018 12:36 pm
Forum: BioSemi Hardware
Topic: Intermittent Error 5000
Replies: 3
Views: 11079

Re: Intermittent Error 5000

Dear Juliette, If the acquisition stops, then first always check if the green power LED on the AD-box is on of off. Assuming that the batteries are working (green LED on the battery is on) If the acquisition stops and the green power LED on the AD-box is off, then there is a situation is described h...
by Robbie303
Tue Apr 22, 2014 4:26 pm
Forum: BioSemi Hardware
Topic: Using electrodes when wet
Replies: 1
Views: 5875

Re: Using electrodes when wet

You can actually just re-use the electrodes without washing. Washing an electrode set while there is still gel on the electrodes, can result in a 'wattery' layer which worsens contact with the skin or with a second layer of gel. In other words: the water makes the surface of the gel very slippery. I...
by Robbie303
Fri Aug 10, 2012 1:28 am
Forum: BioSemi all other topics
Topic: Caps for Infants Not Fitting According to Head Circumference
Replies: 3
Views: 13673

Re: Caps for Infants Not Fitting According to Head Circumfer

Hi Jennifer, The picture on the Cortechsolutions website shows a child of about 3? years old with a Small headcap: http://www.cortechsolutions.com/Products/Physiological-data-acquisition/Systems/ActiveTwo/Components/Head-caps.aspx The picture shows a 64 channel headcap. The distance between FPz and ...
by Robbie303
Thu Aug 09, 2012 12:19 pm
Forum: BioSemi all other topics
Topic: Caps for Infants Not Fitting According to Head Circumference
Replies: 3
Views: 13673

Re: Caps for Infants Not Fitting According to Head Circumfer

Infant head circumferences vary quite a lot, even when the infants are of the same age. What is the median head circumference of your 6 month olds? I know of a lab that tried the Infa3 caps on 6 months olds, but they said those were to small. So it looks like Infa2 (38-42 cm) should be the right siz...
by Robbie303
Thu Jun 14, 2012 2:36 pm
Forum: BioSemi Hardware
Topic: 2-laptop setup, parallel port problem
Replies: 9
Views: 23226

Re: 2-laptop setup, parallel port problem

Cedrus sells a USB to Parallel converter that is instantly compatible between the Presentation software of Mindware Technologies and the trigger inputs of the BioSemi USB receiver. :D

http://www.cedrus.com/stimtracker/
by Robbie303
Thu Mar 01, 2012 4:20 pm
Forum: BioSemi all other topics
Topic: 10-20 locations on caps appear to be off
Replies: 3
Views: 9853

Giorgio, I just tried a Large headcap on a subject with 40 cm preauricular distance. I must admit that I also found that T7 and T8 are located a bit too high with respect to the preauricular points. When I tried a Large/XL headcap on this subject, the location was about right. I would recommend you ...
by Robbie303
Wed Feb 29, 2012 8:57 pm
Forum: BioSemi all other topics
Topic: 10-20 locations on caps appear to be off
Replies: 3
Views: 9853

Giorgio, you are using a headcap which is too small. If I understand correctly, since your subject has 40 cm distance between the 2 preauricular points, the 2 cap holders (T7 and T8) right above the 2 preauricular points should be at 4 cm distance of these 2 preauricular points, but you measured the...
by Robbie303
Mon Aug 30, 2010 1:59 pm
Forum: BioSemi all other topics
Topic: Headcap life
Replies: 1
Views: 6378

Depending on the user and (mainly) the cleaning procedures, my guess would be at least 500 measurements.
by Robbie303
Fri Aug 13, 2010 3:49 pm
Forum: BioSemi all other topics
Topic: Disinfection of EEG caps and cleaning of electrodes
Replies: 4
Views: 19450

Caps can be cleaned with warm or hot water. If necessary, you can use some shampoo. The caps are not really sensitive for cleaning materials. Just let them soak in warm water, this will make the cleaning process easier/faster. Electrodes can be rinsed with tap water without any risk. As long as the ...
by Robbie303
Fri Mar 26, 2010 3:53 pm
Forum: BioSemi all other topics
Topic: New Driver set available.
Replies: 0
Views: 17285

New Driver set available.

The latest set of drivers (beta version) by forum member PMac is now available here:
http://www.biosemi.com/download.htm

Robert, BioSemi
by Robbie303
Fri Jan 22, 2010 1:41 pm
Forum: BioSemi all other topics
Topic: Other platforms
Replies: 23
Views: 93836

The newest updated Linux driver developed by PCMac is available here:

http://www.biosemi.com/download/USB%20d ... x1.tar.bz2
by Robbie303
Tue May 12, 2009 1:44 pm
Forum: BioSemi all other topics
Topic: Other platforms
Replies: 23
Views: 93836

Windows 32&64 and Linux drivers beta version.

A new generation of drivers is now available for evaluation. The below link has both the new Windows 64 bit and Linux drivers. http://www.biosemi.com/download/USB%20drivers%20beta/ For the Linux drivers note the following: 1. The 64 bit version was developed and tested on 64 CentOS 5 (Linux 2.6.18 )...
by Robbie303
Mon Feb 09, 2009 5:12 pm
Forum: BioSemi Software (ActiView executable)
Topic: USB2 driver
Replies: 1
Views: 5590

Hi Martina,

Here you can download the USB2 driver
http://www.biosemi.com/download.htm
This driver is suitable for XP&Vista.

Installing the driver is done by right clicking on the file 'BioSemi.inf'
Then select 'Install'
by Robbie303
Fri Nov 21, 2008 2:29 pm
Forum: BioSemi Hardware
Topic: hardware bandwidth limit
Replies: 1
Views: 6402

Please see this picture, that explains it all.

http://www.biosemi.com/pics/transfer.jpg

Best regards, Robert(Biosemi)