# Problem with DAQ in ERP Chamber

**URL:** <https://psychtoolbox.discourse.group/t/problem-with-daq-in-erp-chamber/148>\
**Category:** Uncategorized\
**Created:** [November 18, 2016, 12:48pm UTC](https://psychtoolbox.discourse.group/t/problem-with-daq-in-erp-chamber/148 "2016-11-18T12:48:08Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Allen\_Ingling](https://avatars.discourse-cdn.com/v4/letter/a/a183cd/32.png) [@Allen\_Ingling](https://psychtoolbox.discourse.group/u/Allen_Ingling)\
**Post date:** [November 18, 2016, 12:48pm UTC](https://psychtoolbox.discourse.group/t/problem-with-daq-in-erp-chamber/148/1 "2016-11-18T12:48:08Z")

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We recently tried upgrading to PTB 3.0.13 on Mac OSX 10.11. &nbsp;For some reason, PTB no longer recognizes our DAQ in our ERP chamber. &nbsp;When we try to send event codes from the ERP chamber, they are no longer recognized by the computer recording the EEG signal. &nbsp;Matlab throws an error, claiming that it could not detect our DAQ. &nbsp;We were previously using PTB 3.0.12 with Mac OSX 10.8 and things worked great.  
  
Are there any obvious issues/changes with DAQ routines in PTB 3.0.13 that we should be aware of? &nbsp; It appears that the DAQ routines have not been significantly altered for quite some time.
  

[http://docs.psychtoolbox.org/Daq](http://docs.psychtoolbox.org/Daq)

  

We appreciate your help.

  

-Nick

  

  

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**Author:** ![mariokleiner](https://avatars.discourse-cdn.com/v4/letter/m/13edae/32.png) [@mariokleiner](https://psychtoolbox.discourse.group/u/mariokleiner)\
**Post date:** [November 19, 2016, 1:21am UTC](https://psychtoolbox.discourse.group/t/problem-with-daq-in-erp-chamber/148/2 "2016-11-19T01:21:33Z")

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XX---In PSYCHTOOLBOX@yahoogroups.com, \<nick.gaspelin@...\> wrote :  

  

We recently tried upgrading to PTB 3.0.13 on Mac OSX 10.11. &nbsp;For some reason, PTB no longer recognizes our DAQ in our ERP chamber. &nbsp;When we try to send event codes from the ERP chamber, they are no longer recognized by the computer recording the EEG signal. &nbsp;Matlab throws an error, claiming that it could not detect our DAQ. &nbsp;We were previously using PTB 3.0.12 with Mac OSX 10.8 and things worked great.  
  
Are there any obvious issues/changes with DAQ routines in PTB 3.0.13 that we should be aware of? &nbsp; It appears that the DAQ routines have not been significantly altered for quite some time.
  
-\> Does detection still work with v3.0.12? What is the full detailed output of devs = PsychHID('Devices')? What is the exact error message on v3.0.13 - the full Matlab output?  
  
-\> In general the DAQ detection code was rewritten multiple times throughout the last years to deal with the frickin quality disaster that is the USB/HID subsystem of recent OSX versions. If that was really successfull i don't know, i no longer have access to any DAQ boxes for testing. If you want best quality and performance, upgrading to Linux is strongly recommended.  
  
-mario  
  

[http://docs.psychtoolbox.org/Daq](http://docs.psychtoolbox.org/Daq)

  

We appreciate your help.

  

-Nick

  

  

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