User Reference:gMOBIlabADC - Revision history

Mellinger: /* g.MOBIlab Hardware */

2008-04-08T10:11:27Z

g.MOBIlab Hardware

← Older revision		Revision as of 10:11, 8 April 2008
Line 11:		Line 11:
	<math>\pm5mV</math>, and channels 7-8 have a sensitivity of <math>\pm5V</math>.		<math>\pm5mV</math>, and channels 7-8 have a sensitivity of <math>\pm5V</math>.
	The input range of the A/D converter is approximately equal to this sensitivity and thus, for example,		The input range of the A/D converter is approximately equal to this sensitivity and thus, for example,
	one LSB for channel 1 or 2 is roughly <math>\frac{200\mu V}{~~65535~~}=0.003\mu V</math>.		one LSB for channel 1 or 2 is roughly <math>\frac{200\mu V}{65536}=0.003\mu V</math>.
	However, the actual input range of the A/D converter is slightly larger than the sensitivity		However, the actual input range of the A/D converter is slightly larger than the sensitivity
	of each channel (so that the A/D converter can detect when the amp saturates), and		of each channel (so that the A/D converter can detect when the amp saturates), and

Mellinger at 10:11, 8 April 2008

2008-04-08T10:11:04Z

← Older revision		Revision as of 10:11, 8 April 2008
Line 40:		Line 40:

	==See also==		==See also==
	[[User Reference:DataIOFilter]], [[Programming Reference:GenericADC]]		[[User Reference:DataIOFilter]], [[Programming Reference:GenericADC Class]]

	[[Category:Filters]][[Category:Data Acquisition]]		[[Category:Filters]][[Category:Data Acquisition]]

Mellinger: /* See also */

2007-11-08T18:03:01Z

Mellinger: /* See also */

2007-11-07T18:11:20Z

Mellinger: /* Function */

2007-11-07T18:10:30Z

Function

← Older revision		Revision as of 18:10, 7 November 2007
Line 2:		Line 2:
	The ''gMOBIlabADC'' acquires data from a ''g.MOBIlab'' device.		The ''gMOBIlabADC'' acquires data from a ''g.MOBIlab'' device.
	''g.MOBIlab'' is an amplifier/digitizer combination from g.tec		''g.MOBIlab'' is an amplifier/digitizer combination from g.tec
	medical engineering GmbH/Guger Technologies OEG ([http://www.gtec.at]).		medical engineering GmbH/Guger Technologies OEG (http://www.gtec.at).

	===g.MOBIlab Hardware===		===g.MOBIlab Hardware===

Mellinger: /* Function */

2007-11-07T18:09:56Z

Function

← Older revision		Revision as of 18:09, 7 November 2007
Line 1:		Line 1:
	==Function==		==Function==
	The ''gMOBIlabADC'' acquires data from a ''g.MOBIlab'' device.		The ''gMOBIlabADC'' acquires data from a ''g.MOBIlab'' device.
	''g.MOBIlab'' is an amplifier/digitizer combination from ~~[http://www.gtec.at~~ g.tec		''g.MOBIlab'' is an amplifier/digitizer combination from g.tec
	medical engineering GmbH/Guger Technologies OEG].		medical engineering GmbH/Guger Technologies OEG ([http://www.gtec.at]).

	===g.MOBIlab Hardware===		===g.MOBIlab Hardware===

Mellinger at 16:42, 15 October 2007

2007-10-15T16:42:34Z

New page

==Function==
The ''gMOBIlabADC'' acquires data from a ''g.MOBIlab'' device.
''g.MOBIlab'' is an amplifier/digitizer combination from [http://www.gtec.at g.tec
medical engineering GmbH/Guger Technologies OEG].

===g.MOBIlab Hardware===
The MOBIlab device supports 8 analog input channels digitized at 16 bit
resolution and sampled at a fixed 256 Hz sampling rate. In its standard
configuration, channels 1-2 have a sensitivity of <math>\pm100\mu V</math>, channels 3-4
have a sensitivity of <math>\pm500\mu V</math>, channels 5-6 have a sensitivity of
<math>\pm5mV</math>, and channels 7-8 have a sensitivity of <math>\pm5V</math>.
The input range of the A/D converter is approximately equal to this sensitivity and thus, for example,
one LSB for channel 1 or 2 is roughly <math>\frac{200\mu V}{65535}=0.003\mu V</math>.
However, the actual input range of the A/D converter is slightly larger than the sensitivity
of each channel (so that the A/D converter can detect when the amp saturates), and
thus, exact LSB values have to be determined for each channel using a calibration signal.

This device only has one A/D converter and thus samples are digitized at slightly different times. BCI2000 has a feature that can align samples in time (parameter [[User Reference:AlignmentFilter#AlignChannels|AlignChannels]], which needs to be turned on (i.e., ''AlignChannels'' needs to be 1).

An additional feature of the MOBIlab is 2 digital input/output lines. The MOBIlab source module is configured such that channel 9 corresponds to the value of the digital lines,
which are configured as input lines.

==Parameters==
===COMport===
Serial port of the attached MOBIlab device, e.g., ''COM2:''

===SampleBlockSize===
Samples per digitized block.
A value of 8 corresponds to a BCI2000 system rate of 32 Hz (<math>\frac{8 samples}{256 Hz}</math>).

===SamplingRate===
The sampling rate of the MOBIlab. This value has to be 256.

===SourceCh===
The total number of channels. This number can be 1 to 9.
If it is set to 9, then channels 1-8 represent 8 analog input channels, and channel 9 represents the values of the two digital lines.

==States==
None.

==See also==
[[User Reference:Filters]]|[[User Reference:DataIOFilter]]

← Older revision		Revision as of 18:03, 8 November 2007
Line 41:		Line 41:
	==See also==		==See also==
	[[User Reference:DataIOFilter]], [[Programming Reference:GenericADC]]		[[User Reference:DataIOFilter]], [[Programming Reference:GenericADC]]

			[[Category:Filters]][[Category:Data Acquisition]]

← Older revision		Revision as of 18:11, 7 November 2007
Line 40:		Line 40:

	==See also==		==See also==
	[[User Reference:~~Filters~~]]\|[[~~User~~ Reference:~~DataIOFilter~~]]		[[User Reference:DataIOFilter]], [[Programming Reference:GenericADC]]