External Cleaning / Disinfecting Instructions For any BIOPAC Systems data acquisition, amplifier, or accessory module: To clean the surface of the module: wipe lightly with a dry, lint-free cloth, or…
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What can I do if I’ve lost my iLok key or left it at home? If you received and lost an iLok key for AcqKnowledge 4, submit a Support Ticket with…
When you purchase a copy of AcqKnowledge 4 or a Research System that includes AcqKnowledge 4 you will receive one License Key (iLok USB). If you have purchased a system with additional…
New Features and Enhancements Increase the Power & Flexibility of AcqKnowledge! AcqKnowledge software is included with each MP160 and MP36R System and some integrated systems; it can also be purchased separately. Check BIOPAC…
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…
When data acquisition is configured to acquire using “Averaging”, some signal amplitude excursions may need to be excluded during the averaging process. Artifact Rejection, available via a checkbox in the averaging setup, is…
When performing some experiments, it may be desirable to link a recorded audio file to a recorded data file. For instance, a subject may be speaking, listening to voice commands,…
It is possible to validate the signals coming from any BIOPAC biopotential amplifier* by using a CBLCALC Calibration Cable. The cable connects to the front of the amplifier and the…
File size is limited by the restraints of the operating system and the available memory space on your hard drive or disk (depending to which you save the file). Software…
Before setting up the grids: After setting up the grids: Instructions for AcqKnowledge version 3.9 1. Turn the grid on from “Display > Show > Grid”.2. Right click on…
AcqKnowledge 3.8.2 and above for Windows allows you to synchronize video files with physiological data. This allows you to jump to specific points in either the video or data file,…
The TSD116C has nine wires that have to be connected to the screw terminals on the rear of the UIM100C module. The black wire must be connected to the 5V…
It is possible to validate the signals coming from any DA100A/B/ or C amplifier by using a CBLCAL* Calibration Cable. The cable connects to the front of the amplifier and…
Discontinued items—Click the item for Specs & Setup Contact BIOPAC to discuss other options. AC100A power supply – use AC300A Accelerometers 5 G: SS26LA now SS26LB, TSD109C now TSD109C2, SS26B…
To duplicate a waveform, select the waveform (channel) and click “Edit > Duplicate Waveform”. For Windows versions of AcqKnowledge older than version 4.0: When selecting the waveform, BIOPAC recommends choosing…
AcqKnowledge includes digital filters that allow you to filter a raw EEG into the following frequency bands: Delta 0.5-4Hz Theta 4-8Hz Alpha 8-13Hz Beta 13-30Hz Gamma 36-90Hz (in some older…
Definitions: EDA = electrodermal activity SRR = skin resistance response SRL = skin resistance level SCR = skin conductance response SCL = skin conductance level SPR = skin potential…
The EOG100C amplifier can record from DC to 100 Hz and is designed to measure a signal correlated with the corneal-retinal potential (the small electrical potential difference between the cornea and…
Channel contention must be considered when connecting the analog output sourcing from external devices to an MP1X0 Data Acquisition System. Considerations for MP160 or MP150 users follow; MP100 users should refer…
To create a new file that contains only some of the channels in the original file, there are two possible approaches, 1) remove the unwanted channels, and 2) transfer only…
In general it is much better to collect high quality data than to spend time and effort formulating methods to extract information from data riddled with artifacts. For advice on…
Normally when you install the Adobe Flash player, you do so with a web browser. The Adobe website extracts information about your browser when you are performing this installation. Under…
Q: What’s being measured? Q: Areas potentially available for study? Q: Response times? Q: BNC Trigger delay? Q: Placement guidelines for sensor? Q: Strengths and limitations of fNIRS? Q: Identify…
Only GEL101 (a solution designed to mimic the salt concentration of sweat) should be used with reusable skin conductance (electrodermal activity) recording electrodes. GEL101 electrode paste is specially formulated with…
BIOPAC recommends the following paper as an excellent reference for guidelines for GSR, EDA, EDR, SCL, and SCR: Psychophysiology, 49 (2012), 1017–1034. Committee report. Publication recommendations for electrodermal measurements. SOCIETY…
PRINT-FRIENDLY PDF Head mounted displays (HMD) are often utilized in virtual reality protocols. Measures such as fNIRS, EEG, and Cognitive State are also useful, and sensors for such measurements must…
Since version 4.1 of AcqKnowledge, there has been a preference setting that allows the software to “Always work with no hardware connected”. If the Start button is disabled when you…
Transducers developed by BIOPAC are linear over their expected ranges of operation. Therefore, knowing the system’s response to two physical stimuli is all that is required. In many cases the…
For comments on some specific data types, see “How do I calibrate my data (Hardware)?” To calibrate a transducer before data are acquired: From the perspective of software, the key…
BIOPAC Systems are intended to be modular, so there is a lot of freedom to connect different components together in different ways. In general, any way modules can fit together…
There are three areas of concern that must be considered in deciding the best way to synchronize stimulation/recording. Experimental need—the precision with which the timing of stimulus delivery events must…
IIR filters IIR filters are much more efficient than FIR filters, but can introduce linear phase distortions. The IIR filters in BIOPAC hardware are emulated by the software IIR filters.…
If your installation CD or DVD for BIOPAC Software—AcqKnowledge, Biopac Student Lab, Biopac Science Lab—is lost or damaged and you need to re-install the software, please send an e-mail to support@biopac.com.with…
If you have an existing amplifier or other piece of equipment that provides an analog signal in the ±10 volt range, you can connect the signal directly to the UIM100C by…
Transducers that do not require power may use connnection cables to connect stand-alone equipment that terminates in, for intstance, BNC, phono, or Male RCA connections. Use Transducer Connector Interfaces (TCIs) to adapt…
To invert a waveform: Select “Transform > Waveform Math…”. Source 1 should be the channel to be inverted, the operation should be “*”, Source 2 should be K (constant), and the Destination should…
Changes to channel setup do not appear in the graph window until new data are acquired. To verify that changes have taken effect, click the “Start” button in AcqKnowledge (this…
To load Physiobank data files into AcqKnowledge 3.9 or higher for Mac, or 4.0 or higher for Windows: Locate the record of interest at the Physiobank database: http://www.physionet.org/physiobank/database/ Download four…
If you are using a single MP100/MP150 system, the maximum number of EEG amplifiers you can have is 16. If more channels are required, it is possible to link acquisitions from…
BIOPAC Research Systems were updated from MP150/UIM to MP160/HLT in August 2016 Sophisticated solutions for data acquisition and analysis Each MP System (MP100 or MP150) is a complete and expandable…
There are several possible reasons for this. The most common is that the cursor has been positioned after the last cycle in the graph window. “Find All Cycles” does not…
Any signal recorded from a BIOPAC amplifier can be output through the stimulator. The stimulator Source switch must be set to CH16 (mislabeled “CH 15”) and the amplifier must be set…
Commonly performed life science measurements are listed below by name and acronym. BIOPAC has data acquisition and analysis solutions for all of these and many more…contact support@biopac.com with a specfic…
To take a screenshot of BIOPAC software/data for reports or publication: A. Use the Edit Function Choose Edit > Clipboard > Copy graph. This will capture what is seen in…
If the positive and negative lead wires were merely swapped, then the signal will just be inverted (not otherwise distorted). The signal may be flipped over either with “Transform >…
When you purchase a system, part of the cost of that system is for a license to run the software. Software is not purchased outright; it is not owned by…
Models designed to infer stroke volumes based on changes in thoracic impedance rely on many simplifying assumptions. These assumptions are not universally valid. Consequently the relationship between measured impedances and…
There are several possible issues. Most relate to the manner in which the power spectral density is computed. Before discussing those, a brief mention of data quality is in order.…
On the MP10x: For unipolar recording you need as many amplifiers as you have sites to record from. For example, for 16 electrodes (not including 1 reference and 1 ground),…
Volume is computed by integrating the flow rate. Any time that data are integrated, decisions must be made about when to “re-set” the integral. That is, at some point it…
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