A Ppendix B: Data File; Standard Intan Rhd2000 Header - NeuroNexus SmartBox Instruction Manual

Standard Intan RHD2000 Header

All Intan RHD2000 data file formats make use of the Standard Intan RHD2000 Header which is described in this section. This header contains records of
sampling rate, amplifier bandwidth, channel names, and other useful information. Each file containing a Standard Intan RHD2000 header has a filename
ending with the .rhd prefix. These are binary files that begin with the following file type and version information.
DATA T YPE N AM E
uint32 Intan RHD2000 Header identifier
int16 Data file main version number
int16 Data file secondary version number
Next is a block of data containing global sampling rate and amplifier frequency parameters:
single Sample Rate
int16
DSP enabled?
single Actual DSP cutoff frequency
single Actual lower bandwidth
single
Actual upper bandwidth
single Desired DSP cutoff frequency
single Desired lower bandwidth
single Desired upper bandwidth
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D ES C R IP T I ON
Indicates a Standard Intan RHD2000 Header. Has a value of 0xC6912702
Both indicate the version of the data file (e.g. v1.2 would be encoded by a 1
followed by a 2)
Amplifier sample rate (units: Samples/s)
0: DSP offset removal high-pass filter was disabled
1: DSP offset removal high-pass filter was enabled
DSP offset removal high-pass filter cutoff frequency (units: Hz)
Amplifier analog high-pass filter cutoff frequency (units: Hz)
Amplifier analog low-pass filter cutoff frequency (units: Hz)
User-requested DSP offset removal high-pass filter cutoff frequency (units:
Hz)
User-requested amplifier high-pass filter cutoff frequency (units: Hz)
User-requested amplifier low-pass filter cutoff frequency (units: Hz)
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APPENDIX B