OmniPlex D Neural Data Acquisition System

The OmniPlex® D Neural Data Acquisition System is Plexon’s flagship electrophysiology research system. The combination of superior front-end amplification, intuitive control software, and game-changing PL2™ neural data file format make the OmniPlex D System the most advanced neural data acquisition and online spike sorting system on the market today.

 **OmniPlex Release 16.1 (Version now available. Learn More about OmniPlex Release 16**

The OmniPlex D System is a compact, flexible platform for high performance data acquisition and powerful online spike sorting.  It offers low latency, superior common-mode rejection amplification and is well known for its user-friendliness.  The OmniPlex D System is a combination of the OmniPlex chassis, OmniPlex Software version 1.7 or higher and a Digital Headstage Processor (DHP) subsystem – all described below.

  • The compact OmniPlex chassis houses cards for synchronization and timing between system components, acquisition subsystem links, digital inputs for 64 channels and 32 auxiliary analog inputs for non-neural experiment signals.
  • The OmniPlex System Controller operates the OmniPlex Software consisting of OmniPlex Server, the “software engine” for neural signal processing, and PlexControl, which is the main user interface providing data visualization and the user interface for interacting with the system.
  • The Digital Headstage Processor (DHP) for use with digital headstages is Plexon's most advanced subsystem. The DHP now enables up to 512 channels of neural recording, decreased sensitivity to ambient electrical noise, and lighter headstage cables with fewer wires for greater freedom of animal movement. Further, it offers real-time upsampling to 40KHz and adjustment of multiplexer timing offsets (equivalent to simultaneous sampling) for improved sorting quality, trodal acquisition and software referencing  – unlike other digital headstage based systems.

    Alternatively, the predecessor to the DHP is Plexon's DigiAmp™ subsystem for analog headstages. The electrically isolated DigiAmp Digitizing Amplifier is available in two sizes: the MiniDigi™ for 16, 32, 48 and 64 channels, and the DigiAmp for 64, 128, 192 and 256 channels. This subsystem is recommended when using analog headstages. 

    Both provide 16-bit A/D conversion at 40kHz per channel for acquisition of the complete wide-band signal. Flexible digital filtering supports a wide variety of filter types (Bessel, Butterworth, Elliptic, 2-12 poles, plus notch filter) and cutoff frequencies, for extracting spikes and field potentials from the wide-band signal and for noise removal.

Sorted spike and continuous data acquired by the OmniPlex D System is available to external clients (developed through the C/C++ or MATLAB® software development kits (SDKs) as soon as 1-2 milliseconds after acquisition. This figure is the actual end-to-end latency through the entire OmniPlex D System from hardware input to hardware output, including an online user client program.

The DigiAmps and all modules in the chassis are synchronized via a high-resolution master timing module.  The same master timing module can be extended to synchronize timestamps with compatible equipment such as Plexon’s CinePlex® Behavioral Research System

A Plexon Sales Engineer is happy to provide more information.