Neural Data Acquisition System Chassis
Model OmniPlex D-DHP
New Features
- Added ability to add comments during PL2 recordings.
- Added PL2 recording protection.
- Added adaptive template, band and 2D polygon sorting.
- Added high speed scope display mode for current-channel spike view.
- Added per-channel spectrogram toggling in MultiPlex view.
- Added percent-sorted sort quality metric.
- Added ability to order units by peak-to-peak template amplitude (template and band sorting).
- Added ability to swap selected units.
Details
The OmniPlex 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 System is a combination of the OmniPlex chassis, OmniPlex Software, and for new OmniPlex systems purchased today, a Digital Headstage Processor (DHP) subsystem – all described below. Other versions of the OmniPlex system could utilize an OmniAmp or DigiAmp A/D device.
- The compact OmniPlex chassis is available in two sizes, Rack Mounted and Table Top, and houses cards for synchronization and timing between system components, acquisition subsystem links, digital inputs, and auxiliary analog inputs for non-neural experiment signals.
- digital headstage processor for neural recording, omniplex, plexon, ephysThe 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 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 adaptive power line noise filter) and cutoff frequencies, for extracting spikes and field potentials from the wide-band signal and for noise removal.
- The DHP and the DigiAmp digitizing amplifier are both electrically isolated.
Sorted spike and continuous data acquired by the OmniPlex 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 System from spike detection 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 discuss your needs and how the OmniPlex could best support your ephys research goals.
Specifications
Selected technical specifications for the OmniPlex System are provided below. A Plexon Sales Engineer is happy to discuss your needs and how the OmniPlex could best support your neural recording and ephys research goals.
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Features |
Specifications and Options |
Remarks |
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Subsystems |
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A/D input conversion |
40kHz per neural channel at 16-bit resolution |
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Timestamping |
25 µsec (40kHz) |
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Filtering |
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For isolation of field potential and spike frequency bands |
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Referencing |
Digital selected channel referencing including:
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For online noise and artifact removal |
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Digital Inputs |
up to 64 channels |
Up to four 16 channel ports, individual TTL and/or strobed word data |
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Auxiliary non-neural A/D inputs |
32 channels |
16 bit A/D conversion for auxiliary non-neural signals, 250kHz max rate (with “fast” card) |
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Trodal sorting support |
Stereotrode and tetrode |
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Channel mapping |
User-definable mapping sets |
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Spike sorting |
Automatic online in waveform space or directly in 2D/3D feature space |
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File type recorded |
Plexon .PL2 and .PLX files |
Utility provides conversion between formats |
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Compatibility |
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Chassis dimensions (inches) |
Rack Mounted: 7 1/4 x 13 7/8 x 19 1/8 Table Top: 7 1/4 x 12 1/2 x 9 3/4 |
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Downloads
Product Brochures and Fliers
Product Manuals
Software Downloads
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