BIOPAC® Systems, Inc. Logo

Arbitrary waveform stimulation

AcqKnowledge can play the digital representation of a signal in analog form through the two Analog Output ports (bottom left front face of the UIM100C or HLT100C).  The most flexible method for passing a signal to an analog output is through the use of an arbitrary waveform.  To use this feature, there should be two AcqKnowledge graph windows open (i.e., make sure that the active window is not the one that contains the source for the arbitrary waveform).

For example, you have two files: test and source. Source is the file that contains the arbitrary waveform, and test is the file that you will use to send out the stimulation and possibly acquire data. When the test file is active, open up the stimulator setup window — in older AcqKnowledge versions, the stimulator setup is available via “MP150 > Set Up Stimulator…“; in AcqKnowledge 4.4, choose “MP150 > Set Up Data Acquisition…“, and then choose “Stimulator” in the pane on the left. If source is open as these steps are performed, it will be available to serve as the source for the D/A converter.

SetUpStimulator.jpg

If you have multiple channels in the source file, only the selected channel will be used as the arbitrary waveform. Also, if you have selected a section of the data in the source file, only this section of data, will be used as the arbitrary waveform for stimulation. Finally, make sure that the number of repeats is set to Once or Forever (not Off) in the stimulator setup window.

Page last modified 22Dec2014

Associated Applications

Associated Application Notes

Spotlight On
BioNomadix Logger plus AcqKnowledge and one transmitter

BioNomadix Wireless Wearable Physiology Logger

Offering the industry’s only system that delivers a comprehensive, 24-hour data logging solution in an easy-to-use, easy-to-wear package, the BioNomadix Logger® truly delivers “physiology anywhere.” The BioNomadix Logger is the perfect tool for applications that demand greater degrees of subject freedom and complex experimental design. BioNomadix Loggers wirelessly record physiological data as subjects freely and naturally […]

View All
Latest News

New Citations | Using Wireless Technology to Support Psych Research

Solving Physical Stress Issues for Surgeons Physical stress in the operating room is common for surgeons, considering how much time they spend in an upright standing position during surgical procedures. With procedures that require standing for several hours and average reported working times of 60-80 hours a week, surgeons seem to be at risk for musculoskeletal […]

New Eye Tracking Glasses Bring Real-world Data to Academic Research

BIOPAC combines eye tracking with mobile data logging and physiology data collection to run experiments in the lab or in the real world BIOPAC Systems, Inc. is pleased to announce new eye tracking integration for researchers who conduct experiments from mobile participants in diverse locations. ETVision (EYE-ETV) eye tracking glasses now integrate with BIOPAC wireless systems and software, […]

Read All
Request a Demonstration
Request a Demonstration