RHD2000 Evaluation System: RHD2000 USB interface board shown with 32-channel amplifier board with SPI interface cable. Up to four amplifier boards may be connected to the USB interface board. (Click for larger image.)
Application note: Data file formats
Application note: I/O voltage level shifting
Application note: Adapting SPI cables to a commutator
Application note: Accelerometer calibration for amplifier / accelerometer boards
Application note: Adding an LED to amplifier boards
RHD2164 amplifier board with 64 unipolar inputs
RHD2000 LabVIEW library: Sample Virtual Instrument designed using library
The RHD2000 Evaluation System is a modular family of open-source hardware and software that allows users to record biopotential signals from up to 256 low-noise amplifier channels using the revolutionary new RHD2000 series of digital electrophysiology chips from Intan Technologies.
A USB interface board connects to a host computer via a standard USB cable. Small amplifier boards connect to the interface board via thin, flexible all-digital cables that may be daisy-chained to form robust connections up to 10 meters in length. Open-source, multi-platform GUI software controls the operation of the amplifiers and streams data to the screen and to disk in real time at user-selected sampling rates from 1 kS/s to 30 kS/s.
The RHD2000 Evaluation System allows users to perform the following functions:
A complete evaluation system consists of a USB interface board, an SPI interface cable, and a small amplifier board. The USB interface board can support up to four amplifier boards. Each amplifier board contains an RHD2000 series amplifier chip with 16, 32, 64, or 128 channels. The amplifier board is connected to the USB interface board with a thin, flexible SPI interface cable. Multiple cables may be daisy-chained to form robust digital data links up to 10 meters in length.
There are seven types of amplifier boards available:
Bandwidths of all RHD2000 amplifier boards are software reconfigurable over a wide range from 0.1 Hz to 20 kHz.
If electrodes with the proper mating connectors are not available, Intan offers an electrode adapter board and two types of wire adapters for custom connections. An SPI cable adapter board allows the system to be used with commutators or other cables.
A dual headstage adapter allows two amplifier boards to be used with a single SPI interface cable.
The operation of the USB interface board and amplifier boards are described in more detail in the RHD2000 evaluation system datasheet. All components of the system are shown in the RHD2000 evaluation system catalog. The evaluation system is built around our open-source Rhythm USB/FPGA interface.
Before attaching the RHD2000 USB interface board to a computer, please first install these drivers. (You do not need to install the drivers to run the interface software in demonstration mode.)
Here is the complied RHD2000 interface software version 1.5 for Windows-based computers (Windows 7, 8, or 10 is recommended). This software can be run with no evaluation system hardware or drivers present; it will generate synthetic neural or ECG data for demonstration purposes if no USB interface board is connected.
After recording data with this software, these m-file functions can be used to load the data files into MATLAB. This Python script can be used to load data files. We also provide a detailed description of data file formats and Windows command line software to convert Intan data files into Spike2 format.
Complete C++/Qt source code for the RHD2000 interface is available on our downloads page.
An Intan LabVIEW library is now available that links the RHD2000 USB evaluation system to the popular LabVIEW instrument control software from National Instruments. More information on this product as well as a trial license download may be found here.
An Intan MATLAB Toolbox is now available that links the RHD2000 USB evaluation system to the powerful MATLAB programming language from Mathworks. More information on this product as well as a trial license download may be found here.