User Reference:gMOBIlabPlusADC - Revision history

Gmilsap: /* DigitalOutputEx */

2009-08-13T19:57:01Z

DigitalOutputEx

← Older revision		Revision as of 19:57, 13 August 2009
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	===DigitalOutputEx===		===DigitalOutputEx===
	'''New in Version 3.0'''		'''New in Version 3.0'''
	If an expression is put here, digital output 4 will be set high whenever this expression evaluates true (nonzero) and low when the expression evaluates false (zero). Boolean expressions work well for this ( ex. ( (StimulusCode == 0) && Running ) ).		If an expression is put here, digital output 4 will be set high whenever this expression evaluates true (nonzero) and low when the expression evaluates false (zero). Boolean expressions work well for this (ex. <tt>( (StimulusCode == 0) && Running )</tt>).

	==States==		==States==

Gmilsap: /* Parameters */

2009-08-13T19:55:16Z

Parameters

← Older revision		Revision as of 19:55, 13 August 2009
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	===DigitalOutBlock===		===DigitalOutBlock===
	If this is true, then digital line 8 is set to output mode, and is set low at the onset of block acquisition, and set high after the block is read. This allows the system timing to be measured, or to synchronize with other external device.		If this is true, then digital line 8 is set to output mode, and is set low at the onset of block acquisition, and set high after the block is read. This allows the system timing to be measured, or to synchronize with other external device.

			===DigitalOutputEx===
			'''New in Version 3.0'''
			If an expression is put here, digital output 4 will be set high whenever this expression evaluates true (nonzero) and low when the expression evaluates false (zero). Boolean expressions work well for this ( ex. ( (StimulusCode == 0) && Running ) ).

	==States==		==States==

Awilson at 18:40, 10 March 2009

2009-03-10T18:40:36Z

← Older revision		Revision as of 18:40, 10 March 2009
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	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).		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 4 digital input lines, and 4 digital input/output lines. The MOBIlab source module is configured such that channels 9-16 corresponds to the value of the digital lines, which are configured as input lines. It is possible to configure one digital line in the output configuration, so that the line is pulsed during a data read. This is described further in the parameters section under DigitalOutBlock.		An additional feature of the MOBIlab+ is 4 digital input lines, and 4 digital input/output lines. The MOBIlab+ source module is configured such that channels 9-16 corresponds to the value of the digital lines, which are configured as input lines. It is possible to configure one digital line in the output configuration, so that the line is pulsed during a data read. This is described further in the parameters section under '''DigitalOutBlock'''.

	==Installation==		==Installation==
Line 16:		Line 16:
	==Parameters==		==Parameters==
	===COMport===		===COMport===
	Serial port of the attached MOBIlab device, e.g., ''~~COM2~~:''		Serial port of the attached MOBIlab+ device, e.g., ''COM7:'' This value is determined when the Bluetooth serial port is configured during installation.

			===SourceCh===
			The total number of channels. This number can be 1 to 8, or 16.
			If it is set to between 1 and 8, then channels 1-8 represent 8 analog input channels. If it is set to 16, then channels 1-8 are analog, and channels 9-16 are digital inputs (see '''DigitalEnable''').

	===SampleBlockSize===		===SampleBlockSize===
Line 23:		Line 27:

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

	===~~SourceCh~~===		===InfoMode===
	~~The~~ total number of channels. ~~This number can be 1 to 9.~~		Displays information about the MOBIlab+ device.
	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~~.
			===DigitalEnable===
			If this is true, then the 8 digital lines are read as inputs. In this case, the total number of channels '''SourceCh''' must equal 16.

			===DigitalOutBlock===
			If this is true, then digital line 8 is set to output mode, and is set low at the onset of block acquisition, and set high after the block is read. This allows the system timing to be measured, or to synchronize with other external device.

	==States==		==States==

Awilson at 18:33, 10 March 2009

2009-03-10T18:33:19Z

← Older revision		Revision as of 18:33, 10 March 2009
Line 9:		Line 9:
	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).		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 4 digital input lines, and 4 digital input/output lines. The MOBIlab source module is configured such that channels 9-16 corresponds to the value of the digital lines, which are configured as input lines.		An additional feature of the MOBIlab+ is 4 digital input lines, and 4 digital input/output lines. The MOBIlab source module is configured such that channels 9-16 corresponds to the value of the digital lines, which are configured as input lines. It is possible to configure one digital line in the output configuration, so that the line is pulsed during a data read. This is described further in the parameters section under DigitalOutBlock.

	==Installation==		==Installation==

Awilson at 18:31, 10 March 2009

2009-03-10T18:31:02Z

← Older revision		Revision as of 18:31, 10 March 2009
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	===g.MOBIlab Hardware===		===g.MOBIlab Hardware===
	The MOBIlab device supports 8 analog input channels digitized at 16 bit		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~~		resolution and sampled at a fixed 256 Hz sampling rate. Additionally, 8 digital input lines can be sampled with the analog data, so that behavioral information (e.g., button presses) can be recorded as well. The amplifier has a sensitivity of <math>\pm500\mu V</math>,
	~~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}{65536}=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).		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,		An additional feature of the MOBIlab+ is 4 digital input lines, and 4 digital input/output lines. The MOBIlab source module is configured such that channels 9-16 corresponds to the value of the digital lines, which are configured as input lines.
	which are configured as input lines.
			==Installation==
			Prior to using the g.MOBIlab+, the bluetooth software must be installed, and the serial port configured to connect to the device. The instructions can be found in this PDF.

	==Parameters==		==Parameters==

Awilson at 18:12, 10 March 2009

2009-03-10T18:12:28Z

New page

==Function==
The ''gMOBIlabPlusADC'' acquires data from a ''g.MOBIlab+'' device.
The ''g.MOBIlab+'' is an amplifier/digitizer combination from g.tec medical engineering GmbH/Guger Technologies OEG (http://www.gtec.at) which can transmit data wirelessly via a Bluetooth connection.

===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}{65536}=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:DataIOFilter]], [[Programming Reference:GenericADC Class]]

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