Catalog excerpts
PlexStim™ Electrical Stimulator The PlexStim™ Electrical Stimulator (PlexStim) is an electrically isolated 16 channel constant current stimulator system with 16 individually programmable current sources that share a common return path. The stimulator can generate arbitrary waveform patterns, that can be initiated from the Graphical User Interface (GUI) or from externally triggered digital inputs. The highprecision stimulator delivers waveforms with 30nA resolution and 1µsec temporal resolution. The actual current and voltage delivered to any electrode can be conveniently monitored on a per-channel basis. 1 6 channel constant current stimulator N ow supports up to 64 channels (via four 16 channel devices) Current and Voltage Monitor Channels The actual current and voltage delivered to any one electrode can be conveniently monitored on an oscilloscope using the standard BNC monitor outputs. I mproved power scheme and better isolation E lectrically isolated from main power supply A ccuracy of 1µsec temporal resolution, and 30nA current resolution (in stimulation mode), with 16-bit resolution Voltage monitor I ntegrated impedance testing Current monitor A rbitrary stimulation waveform patterns V oltage and current monitor channels – view in real time the current flowing through and the voltage applied across any one electrode at a time 1 6 independent digital inputs for triggering stimulation protocols 1 7 digital outputs for synchronizing stimulation pulses with other electronic equipment S oftware controlled, USB 2.0 interface M aximum Current ±1mA C ompliance Voltage 10V @ 700μA S DK available for C/C++ and MATLAB® Easy-to-use Software Interface The graphical user interface makes it easy to generate biphasic pulses and bursts of pulses repeated at specific rates. More complicated rectangular waveforms and nonrectangular arbitrary waveforms may be defined in and loaded from a simple text file. In addition, a software SDK is available in C/C++ or MATLAB which may be used to create stimulation waveforms or pulse patterns outside of the Plexon GUI interface, and downloaded to the PlexStim. Voltage and Current monitor outputs Triggering Stimulation Every stimulation pattern can be started and stopped manually, either within the software interface or with an external trigger (TTL). PlexStim allows you to trigger each of the 16 analog output channels independently. Complex stimulation patterns can be delivered in this way with precise timing based on different triggers. Each channel has a dedicated digital input that may be used in an edge triggered or level triggered (gated) mode to initiate stimulation with microsecond latency. Each channel has a dedicated digital output to signal to other devices the precise time when stimulation is occurring. Programmable Stimulation Waveforms The stimulator can deliver arbitrary stimulation waveforms. The arbitrary stimulation current values can be downloaded to the PlexStim hardware either via the software interface or the SDKs. Stimulation pulses can be repeated to generate pulse trains with user-defined intra- and inter-burst intervals. Different waveform patterns and protocols can be applied to each of the 16 stimulation outputs. Stimulation protocols can be repeated up to 32,767 times, and then stopped either manually or on a trigger event. The internal 1MHz clock guarantees precise timing across channels and over time. Software interface 16 digital input lines 16 stimulation output lines Triggering Stimulation 17 digital output lines PLEXON®, the five-line symbol, CereStage™, CineCorder™, CineLAB™, CineLyzer™, CinePartner™, CinePlex®, CineTracker™, CineTyper™, DigiAmp™, MiniDigi™, Offline Sorter™, OmniPlex®, PL2™, PlexBright®, PlexDrive™, PlexStim™, Radiant™ and RapidGrid™ are registered and unregistered trademarks of Plexon Inc, Dallas, Texas, USA. ©2016 Plexon Inc. All rights reserved. Other product and company names mentioned are trademarks of their respective owners. For more information email info@plexon.com or c
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