Search found 1125 matches
- Thu May 04, 2023 12:36 pm
- Forum: BioSemi Hardware
- Topic: Optical Sensors (Trigger)
- Replies: 4
- Views: 6764
Re: Optical Sensors (Trigger)
Purchase 2 Photo-Sensors (http://www.biosemi.com/accessoires.htm), send your AD-boxes to add the ERGO inputs. Use the USB trigger interface (http://www.biosemi.com/faq/USB%20Trigger%20interface%20cable.htm) to input the triggers to the USB-Receiver (http://www.biosemi.com/receiver.htm). The optic se...
- Wed May 03, 2023 1:13 pm
- Forum: BioSemi Hardware
- Topic: Optical Sensors (Trigger)
- Replies: 4
- Views: 6764
Re: Optical Sensors (Trigger)
Please describe the setup: which triggerbox and how is it connected to the amplifier and optical sensors ?
Best regards, Coen (BioSemi)
Best regards, Coen (BioSemi)
- Thu Apr 27, 2023 5:17 pm
- Forum: BioSemi Hardware
- Topic: Persistent connection issue with New USB2 Receiver (Win11)
- Replies: 4
- Views: 6232
Re: Persistent connection issue with New USB2 Receiver (Win11)
If I understand correctly, ActiveTwo acquisition and trigger generation run on the same computer, and both the USB-receiver and USB-trigger-interface connect inconsistently. The two USB devices work independent of each other. It is unlikely that both USB devices are defect, so I suspect a computer p...
- Thu Apr 27, 2023 3:38 pm
- Forum: BioSemi Hardware
- Topic: Persistent connection issue with New USB2 Receiver (Win11)
- Replies: 4
- Views: 6232
Re: Persistent connection issue with New USB2 Receiver (Win11)
The serial COM port is only used by the USB-->Parallel trigger interface (https://www.biosemi.com/faq/USB%20Trigger%20interface%20cable.htm), it has nothing to do with the USB receiver (https://www.biosemi.com/receiver.htm). Without the COM port active, the ActiveTwo system works and receives trigge...
- Wed Apr 26, 2023 8:59 pm
- Forum: BioSemi Software (ActiView executable)
- Topic: Testing psychopy triggers-sent codes in ActiveView without connecting the AD-Box
- Replies: 4
- Views: 6604
Re: Testing psychopy triggers-sent codes in ActiveView without connecting the AD-Box
The 8 trigger lines are 8 bits for the codes 0 to 255, so you can convert the flashing LEDs to numbers. You may want to use Actitools902 ---> Trigger to make the conversion easy. It is not possible to see the triggers in ActiView without a connected ActiveTwo system (but it can be a stripped down sy...
- Wed Apr 26, 2023 3:42 pm
- Forum: BioSemi Software (ActiView executable)
- Topic: Testing psychopy triggers-sent codes in ActiveView without connecting the AD-Box
- Replies: 4
- Views: 6604
Re: Testing psychopy triggers-sent codes in ActiveView without connecting the AD-Box
You can connect 8 LEDs between pins 1-8 and 37 (ground) of the USB trigger interface. The outputs are 3V with 1 kOhm in series so the LED current approx. 1 mA. With a low-current LED , the 8 millisecond pulses are well visible (we tested this). This will allow you to monitor the 8 trigger lines with...
- Mon Apr 03, 2023 10:14 pm
- Forum: BioSemi Hardware
- Topic: USB2.0 Receiver Box not working
- Replies: 1
- Views: 4773
Re: USB2.0 Receiver Box not working
Check the speedmode (rotary) switch on the AD-box, should be on 4, 5, 6 or 7.
Best regards, Coen (BioSemi)
Best regards, Coen (BioSemi)
- Mon Mar 27, 2023 3:15 pm
- Forum: BioSemi Software (ActiView executable)
- Topic: Trigger code not shown
- Replies: 2
- Views: 3592
Re: Trigger code not shown
About/Configure tab --> Trigger Format (lower left corner) --> Decimal
Best regards, Coen (BioSemi)
Best regards, Coen (BioSemi)
- Wed Mar 22, 2023 2:29 pm
- Forum: EEG data analysis
- Topic: How to select status channel
- Replies: 2
- Views: 3477
Re: How to select status channel
See https://www.biosemi.nl/forum/viewtopic.php?f=1&t=1236&p=3633 Edit the CFG with the "Configurator" tool in ActiTools902 ( http://www.biosemi.com/download/ToolsForRuntimeEngine2021/ActiTools902-Win.zip ). You can remove the extra triggers with the "Muter" tool in ActiTools902 There is one Trigger/...
- Tue Mar 07, 2023 7:14 pm
- Forum: BioSemi Hardware
- Topic: Hyperscanning using one amplifier
- Replies: 1
- Views: 3117
Re: Hyperscanning using one amplifier
The answer to all 3 above questions is: no. Each subject should have its own AD-box. Up to four AD-boxes are daisy-chained by optical fibers. The combined data is processed by a single computer and saved into a single file.
Best regards, Coen (BioSemi)
Best regards, Coen (BioSemi)
- Thu Feb 23, 2023 3:57 pm
- Forum: BioSemi Software (ActiView executable)
- Topic: Actiview display settings + offsets
- Replies: 2
- Views: 3439
Re: Actiview display settings + offsets
Offsets should be stable and approximately within the +50 mV to -50 mV range. Trying to get them closer to zero does not improve anything. Bridging with DRL (50 Hz noise) or CMS (flat line) indicates that you use too much gel. In that case, there are probably several other gel bridges (adjacent elec...
- Wed Feb 22, 2023 6:45 pm
- Forum: BioSemi Hardware
- Topic: Ergo port, treshold voltage for trigger
- Replies: 10
- Views: 5286
Re: Ergo port, treshold voltage for trigger
ActiView is open-source. You can change the LabVIEW code to not read the trigger level from the CFG, but from an added adjuster.
Best regards, Coen (BioSemi)
Best regards, Coen (BioSemi)
- Wed Feb 15, 2023 4:35 pm
- Forum: BioSemi Software (ActiView executable)
- Topic: Irregular noise all over
- Replies: 4
- Views: 6254
Re: Irregular noise all over
P4 does not make contact with the skin (not enough gel), or is defect (test in water).
Best regard. Coen (BioSemi)
Best regard. Coen (BioSemi)
- Thu Feb 09, 2023 7:21 pm
- Forum: BioSemi Hardware
- Topic: Ergo port, treshold voltage for trigger
- Replies: 10
- Views: 5286
Re: Ergo port, treshold voltage for trigger
Yes you should, unconnected inverting inputs could explain the above problems. Inverting inputs to 0V is OK, but in your case is even better to connect the inverting inputs via a 5k6 resistor to +3V, AND via a 3k7 resistor to -2V (better rejection of supply voltage ripple because both inverting and ...
- Thu Feb 09, 2023 2:00 pm
- Forum: BioSemi Hardware
- Topic: Ergo port, treshold voltage for trigger
- Replies: 10
- Views: 5286
Re: Ergo port, treshold voltage for trigger
Did you connect the inverting inputs of the ERGOs (pins 5 and 7) to 0V/Common (pin 2) ?
Best regards, Coen (BioSemi)
Best regards, Coen (BioSemi)
- Tue Feb 07, 2023 4:13 pm
- Forum: BioSemi Software (ActiView executable)
- Topic: using triggers to start/stop the display (not the saving)
- Replies: 9
- Views: 14879
Re: using triggers to start/stop the display (not the saving)
Both the above approaches are OK, but I would just delete the wire from the OR output and connect a FALSE constant to the yellow case selector.
Best regards, Coen (BioSemi)
Best regards, Coen (BioSemi)
- Thu Feb 02, 2023 7:13 pm
- Forum: BioSemi Software (ActiView executable)
- Topic: Triggers shown in ActiView during recording, but not saved
- Replies: 4
- Views: 3639
- Thu Feb 02, 2023 7:06 pm
- Forum: BioSemi Hardware
- Topic: Ergo port, treshold voltage for trigger
- Replies: 10
- Views: 5286
Re: Ergo port, treshold voltage for trigger
Sounds like a missing/floating 0V/Ground. Sensor output should probably be referenced to 0V. Connect the 0V to the sensor Ground/Common. Supply datasheet of sensor.
Best regards, Coen (BioSemi)
Best regards, Coen (BioSemi)
- Wed Feb 01, 2023 1:10 pm
- Forum: BioSemi Software (ActiView executable)
- Topic: Triggers shown in ActiView during recording, but not saved
- Replies: 4
- Views: 3639
Re: Triggers shown in ActiView during recording, but not saved
ActiView is open-source. You can check in the source code that it is impossible that triggers shown during recording are not saved in the BDF file. The problem is surely in your file reader. Check with ActiRead ( http://www.biosemi.com/download/ToolsForRuntimeEngine2021/ActiRead902-Win.zip ). Best r...
- Fri Jan 27, 2023 3:40 pm
- Forum: BioSemi Hardware
- Topic: Ergo port, treshold voltage for trigger
- Replies: 10
- Views: 5286
Re: Ergo port, treshold voltage for trigger
The one-shot trigger characteristics can be adjusted in the CFG (use ActiTools --> Configurator). Further explanation is found at https://www.youtube.com/watch?v=_OMoXttIguc&t=560s
Best regards, Coen (BioSemi)
Best regards, Coen (BioSemi)
- Tue Jan 24, 2023 3:32 pm
- Forum: BioSemi Software (ActiView executable)
- Topic: using triggers to start/stop the display (not the saving)
- Replies: 9
- Views: 14879
Re: using triggers to start/stop the display (not the saving)
The code of the ERP section is still the same (besides some minor bug repairs).
Best regards, Coen (BioSemi)
Best regards, Coen (BioSemi)
- Tue Jan 17, 2023 6:40 pm
- Forum: BioSemi all other topics
- Topic: Triggers show in ActiView but are missing in saved recording.
- Replies: 6
- Views: 4390
Re: Triggers show in ActiView but are missing in saved recording.
Yes, send a zero (lines 1-8 Low) after each trigger. The trigger length should remain longer than the sample period (otherwise triggers can be missed), best regards, Coen
- Tue Jan 17, 2023 5:59 pm
- Forum: BioSemi all other topics
- Topic: Triggers show in ActiView but are missing in saved recording.
- Replies: 6
- Views: 4390
Re: Triggers show in ActiView but are missing in saved recording.
The colored lines show the trigger lines 1-16 (colored when High). Use ActiTools to convert to decimal values. The errors in other file readers are because you do not pull all trigger lines Low after each trigger. In ActiRead, you should see colored dots, not lines. Use the "analog" display mode in ...
- Tue Jan 17, 2023 4:22 pm
- Forum: BioSemi all other topics
- Topic: Triggers show in ActiView but are missing in saved recording.
- Replies: 6
- Views: 4390
Re: Triggers show in ActiView but are missing in saved recording.
ActiView displays the actual data that is streamed to BDF file, there cannot be a discrepancy between display and file. Check the triggers in ActiRead for confirmation ( https://www.biosemi.com/download/ToolsForRuntimeEngine2021/ActiRead902-Win.zip ). Consequently, there must be an error in your fil...
- Mon Jan 16, 2023 3:51 pm
- Forum: BioSemi Hardware
- Topic: Weird Noise in AIB Analog Input
- Replies: 1
- Views: 3107
Re: Weird Noise in AIB Analog Input
50 Hz pickup is normal when measuring on an unconnected (floating) high impedance AIB input. Connect the analog outputs of your Kistler Multicomponent Force Plate to the AIB inputs and inspect the signals in ActiView. You do not need the Kistler DAQ, the BioSemi AIB is the Data Acquisition System in...
- Thu Oct 13, 2022 3:03 pm
- Forum: BioSemi Software (ActiView executable)
- Topic: How to activate TCP in ActiView
- Replies: 2
- Views: 3547
Re: How to activate TCP in ActiView
Select a port number and the channels to transmit, the other fields will show data when the client connects. ActiView starts transmitting when the client connects. Data before the connection is made cannot be transmitted. Test with the LabVIEW client: https://www.biosemi.com/download/ToolsForRuntime...
- Fri Sep 02, 2022 1:42 pm
- Forum: BioSemi Software (ActiView executable)
- Topic: Manual for editing ActiView .cfg files
- Replies: 15
- Views: 51440
Re: Manual for editing ActiView .cfg files
Inspect and modify CFG files with the "Configurator" in the new ActiTools 902: https://www.biosemi.com/download.htm
Best regards, Coen (BioSemi)
Best regards, Coen (BioSemi)
- Wed Aug 31, 2022 1:03 pm
- Forum: BioSemi Software (ActiView executable)
- Topic: Almost all offsets are negative
- Replies: 1
- Views: 3088
Re: Almost all offsets are negative
Yes, normal, so long as everything is within -50 mV and + 50 mV all is fine.
- Tue Aug 30, 2022 12:01 pm
- Forum: BioSemi Hardware
- Topic: Soak an electrode in salt water
- Replies: 1
- Views: 3584
- Sat Aug 27, 2022 5:31 pm
- Forum: BioSemi Software (ActiView executable)
- Topic: line noise enter despite low impedance.
- Replies: 1
- Views: 3368
Re: line noise enter despite low impedance.
Gel bridge with DRL, also see viewtopic.php?f=7&t=810&p=3048 . Use just enough gel to fill the holder, but not more.
Best regards, Coen (BioSemi)
Best regards, Coen (BioSemi)