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APPENDIX B
DATA TYPE
int16
Notch filter mode
NAME
DESCRIPTION
0: Software notch filter was disabled
1: Software notch filter was enabled and set to 50 Hz
2: Software notch filter was enabled and set to 60 Hz
single
Desired impedance test frequency
Electrode impedance test frequency last requested by user (units: Hz)
single
Actual impedance test frequency
Closest realizable electrode impedance test frequency (units: Hz)
QString
Note 1
User text from the “Note 1” field in the “Configure” tab in the GUI
QString
Note 2
User text from the “Note 2” field in the “Configure” tab in the GUI
QString
Note 3
User text from the “Note 3” field in the “Configure” tab in the GUI
The SmartLink headstage is not always capable of achieving the precise cutoff frequencies specified by the user, so both the values requested in the
GUI and the actual values realized on the chip are saved.
The next parameter records the state of the software-implemented 50/60 Hz notch filter in the GUI during recording. This notch filter is never applied to
saved data, but this information may be used to re-apply the notch filter to recorded data, if desired. (The m-file read_Intan_RHD2000_file.m re-imple-
ments this notch filter on amplifier data that was saved with the filter enabled.)
Next are two floating-point numbers indicating the latest user-requested electrode impedance test frequency and the impedance test frequency actu-
ally realized on the SmarLink headstage.
In the “Configure” tab of the SmartBox
™
GUI, there are three general-purpose text fields that may be used to enter notes on particular recording ses-
sions. The contents of these text fields are saved here.
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