User Reference:gUSBampADC - Revision history

Mellinger: /* DigitalOutputEx */

2026-02-05T16:06:00Z

DigitalOutputEx

← Older revision		Revision as of 16:06, 5 February 2026
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	===DigitalOutputEx===		===DigitalOutputEx===
	If digital output is turned on, the given expressions will be evaluated for the current input (if EnableDigitalOutput=1) resp. output (if EnableDigitalOutput=3). If the expression evaluates true for any sample in the current data block, the bit is set to high, else set to low. Each expression represents a different bit and the number starts with the master and is continuous through all amps like digital input. Boolean expressions work well for this ( ex. <tt>( ( StimulusCode == 0 ) && Running )</tt> ). See [[:User Reference:Expression Syntax\|Expressions]] for more information on how to write expressions.		If digital output is turned on, the given expressions will be evaluated for the current input (if EnableDigitalOutput=1) resp. output (if EnableDigitalOutput=3). If the expression evaluates true for any sample in the current data block, the bit is set to high, else set to low. Each expression represents a different bit and the number starts with the master and is continuous through all amps like digital input. Boolean expressions work well for this ( ex. <tt>((StimulusCode == 0) && Running)</tt> ). See [[:User Reference:Expression Syntax\|Expressions]] for more information on how to write expressions.

	===AcquisitionMode===		===AcquisitionMode===

Mellinger: /* DigitalOutputEx */

2026-02-05T13:28:57Z

DigitalOutputEx

← Older revision		Revision as of 13:28, 5 February 2026
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	===DigitalOutputEx===		===DigitalOutputEx===
	If digital output is turned on, the given expressions will be evaluated for the current input (if EnableDigitalOutput=1) resp. output (if ~~EenableDigitalOutput~~=3). If the expression evaluates true the bit is set to high, else set to low. Each expression represents a different bit and the number starts with the master and is continuous through all amps like digital input. Boolean expressions work well for this ( ex. <tt>( ( StimulusCode == 0 ) && Running )</tt> ). See [[:User Reference:Expression Syntax\|Expressions]] for more information on how to write expressions.		If digital output is turned on, the given expressions will be evaluated for the current input (if EnableDigitalOutput=1) resp. output (if EnableDigitalOutput=3). If the expression evaluates true for any sample in the current data block, the bit is set to high, else set to low. Each expression represents a different bit and the number starts with the master and is continuous through all amps like digital input. Boolean expressions work well for this ( ex. <tt>( ( StimulusCode == 0 ) && Running )</tt> ). See [[:User Reference:Expression Syntax\|Expressions]] for more information on how to write expressions.

	===AcquisitionMode===		===AcquisitionMode===

Mellinger: /* Function */

2026-02-05T13:26:41Z

Function

← Older revision		Revision as of 13:26, 5 February 2026
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	==Function==		==Function==
	The ''gUSBampADC'' filter acquires data from ~~any number~~ (tested up to four) ''g.USBamp'' EEG amplifiers.		The ''gUSBampADC'' filter acquires data from up to eight (tested up to four) ''g.USBamp'' EEG amplifiers.
	''g.USBamp'' is an amplifier/digitizer combination from g.tec medical engineering GmbH/Guger Technologies OEG (http://www.gtec.at).		''g.USBamp'' is an amplifier/digitizer combination from g.tec medical engineering GmbH/Guger Technologies OEG (http://www.gtec.at).
	Support for this device in BCI2000 consists of two components: A BCI2000-compatible Source Module (''gUSBampSource.exe'') and a		Support for this device in BCI2000 consists of two components: A BCI2000-compatible Source Module (''gUSBampSource.exe'') and a

Mellinger: /* DigitalOutputEx */

2026-02-05T12:50:04Z

DigitalOutputEx

← Older revision		Revision as of 12:50, 5 February 2026
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	===DigitalOutputEx===		===DigitalOutputEx===
	If digital output is turned on, the given expressions will be evaluated for the current input. If the expression evaluates true the bit is set to high, else set to low. Each expression represents a different bit and the number starts with the master and is continuous through all amps like digital input. Boolean expressions work well for this ( ex. <tt>( ( StimulusCode == 0 ) && Running )</tt> ). See [[:User Reference:Expression Syntax\|Expressions]] for more information on how to write expressions.		If digital output is turned on, the given expressions will be evaluated for the current input (if EnableDigitalOutput=1) resp. output (if EenableDigitalOutput=3). If the expression evaluates true the bit is set to high, else set to low. Each expression represents a different bit and the number starts with the master and is continuous through all amps like digital input. Boolean expressions work well for this ( ex. <tt>( ( StimulusCode == 0 ) && Running )</tt> ). See [[:User Reference:Expression Syntax\|Expressions]] for more information on how to write expressions.

	===AcquisitionMode===		===AcquisitionMode===

Mellinger: /* EnableDigitalOutput */

2026-02-05T12:48:40Z

EnableDigitalOutput

← Older revision		Revision as of 12:48, 5 February 2026
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	===EnableDigitalOutput===		===EnableDigitalOutput===
	;1: Enable digital output.		;1: Enable digital output (prior to data acquisition).
	:If enabled, the digital output is set to the values returned when the signals go through the expressions given by the Parameter DigitalOutputEx. See [[:User Reference:gUSBampADC#Digital Output\|Digital Output]] for more information.		:If enabled, the digital output is set to the values returned when the signals go through the expressions given by the Parameter DigitalOutputEx. See [[:User Reference:gUSBampADC#Digital Output\|Digital Output]] for more information. Digital outputs will be set prior to data acquisition.
	;2: Timing test.		;2: Timing test.
	:If this option is chosen, DigitalOutput1 will be set zero while waiting for data, and to 1 once data has arrived. This can be used to measure amplifier latency ([[User_Reference:BCI2000Certification\|see BCI2000Certification]]).		:If this option is chosen, DigitalOutput1 will be set zero while waiting for data, and to 1 once data has arrived. This can be used to measure amplifier latency ([[User_Reference:BCI2000Certification\|see BCI2000Certification]]).
			;3: Enable digital output (after to data acquisition).
			:If enabled, the digital output is set to the values returned when the signals go through the expressions given by the Parameter DigitalOutputEx. See [[:User Reference:gUSBampADC#Digital Output\|Digital Output]] for more information. Digital outputs will be set after data acquisition.

	===DigitalOutputEx===		===DigitalOutputEx===

Mellinger: /* SourceChList */

2026-01-20T16:23:00Z

SourceChList

← Older revision		Revision as of 16:23, 20 January 2026
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	Channels may not be listed twice on a single device; e.g., entering '1 2 3 4 5 6 7 1' if ''SourceChDevices'' = '8' will result in an error.		Channels may not be listed twice on a single device; e.g., entering '1 2 3 4 5 6 7 1' if ''SourceChDevices'' = '8' will result in an error.
	If this parameter is left blank (the default), then all channels are acquired on all devices.		If this parameter is left blank (the default), then all channels are acquired on all devices.
			<!--
	<!-- ===BipolarChList===		===BipolarChList===
	A list of channels used for a bipolar montage. Each entry is configured as the reference for a source channel, based on the channel order. The number of values should equal both ''SourceCh'' and the number of values in ''SourceChList'' (if ''SourceChList'' is not empty). If ''BipolarChList'' is empty, then the standard referential recording montage is used. If a value of '0' is entered, then the reference channel is used for that channel. Finally, channel labels may be used.		A list of channels used for a bipolar montage. Each entry is configured as the reference for a source channel, based on the channel order. The number of values should equal both ''SourceCh'' and the number of values in ''SourceChList'' (if ''SourceChList'' is not empty). If ''BipolarChList'' is empty, then the standard referential recording montage is used. If a value of '0' is entered, then the reference channel is used for that channel. Finally, channel labels may be used.

Mellinger: /* SamplingRate */

2026-01-19T14:24:59Z

SamplingRate

← Older revision		Revision as of 14:24, 19 January 2026
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	The USBamp supports the following sampling rates: 32, 64, 128, 256, 512, 600, 1200, 2400, 4800, 9600, 19200, and 38400 Hz. All sampling rates are supported for one or more amplifiers. If you are sampling at high rates and from multiple amplifiers, the CPU may be overloaded depending on the speed of your computer and the BCI2000 configuration. In case you are experiencing problems (e.g., data loss, jerky display, etc.), increase the SampleBlockSize so that you are updating the system less frequently (usually, updating the system 20-30 times per second is sufficient for most applications), and increase Visualize->VisualizeSourceDecimation. This parameter will decrease the number of samples per second that are actually drawn in the Source display.		The USBamp supports the following sampling rates: 32, 64, 128, 256, 512, 600, 1200, 2400, 4800, 9600, 19200, and 38400 Hz. All sampling rates are supported for one or more amplifiers. If you are sampling at high rates and from multiple amplifiers, the CPU may be overloaded depending on the speed of your computer and the BCI2000 configuration. In case you are experiencing problems (e.g., data loss, jerky display, etc.), increase the SampleBlockSize so that you are updating the system less frequently (usually, updating the system 20-30 times per second is sufficient for most applications), and increase Visualize->VisualizeSourceDecimation. This parameter will decrease the number of samples per second that are actually drawn in the Source display.

	<!--		<!--
	===SignalType===		===SignalType===

Mellinger: /* SamplingRate */

2026-01-19T14:24:46Z

SamplingRate

← Older revision		Revision as of 14:24, 19 January 2026
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	If one wants to use a bandpass or a notch filter, there needs to be a filter configuration for that particular sampling rate (see the section on the ''[USBampgetinfo]'' tool). (Guger Technologies can provide you with a new driver configuration file if you need a different filter.)		If one wants to use a bandpass or a notch filter, there needs to be a filter configuration for that particular sampling rate (see the section on the ''[USBampgetinfo]'' tool). (Guger Technologies can provide you with a new driver configuration file if you need a different filter.)

	The USBamp supports the following sampling rates: 32, 64, 128, 256, 512, 600, 1200, 2400, 4800, 9600, 19200, and 38400 Hz. All sampling rates are supported for one or more amplifiers. If you are sampling at high rates and from multiple amplifiers, the CPU may be overloaded depending on the speed of your computer and the BCI2000 configuration. In case you are experiencing problems (e.g., data loss, jerky display, etc.), increase the SampleBlockSize so that you are updating the system less frequently (usually, updating the system 20-30 times per second is sufficient for most applications), and increase Visualize->VisualizeSourceDecimation. This parameter will decrease the number of samples per second that are actually drawn in the Source display. ~~For example, at 38400 Hz, 4 amplifiers (64 channels), and a system update of 30 Hz, the computer would have to draw more than 73 million lines per second in the Source display!~~		The USBamp supports the following sampling rates: 32, 64, 128, 256, 512, 600, 1200, 2400, 4800, 9600, 19200, and 38400 Hz. All sampling rates are supported for one or more amplifiers. If you are sampling at high rates and from multiple amplifiers, the CPU may be overloaded depending on the speed of your computer and the BCI2000 configuration. In case you are experiencing problems (e.g., data loss, jerky display, etc.), increase the SampleBlockSize so that you are updating the system less frequently (usually, updating the system 20-30 times per second is sufficient for most applications), and increase Visualize->VisualizeSourceDecimation. This parameter will decrease the number of samples per second that are actually drawn in the Source display.

	<!--		<!--

Mellinger: /* DeviceIDMaster */

2026-01-19T14:23:52Z

DeviceIDMaster

← Older revision		Revision as of 14:23, 19 January 2026
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	Serial number (e.g., UA-2007.01.01) of the master device.		Serial number (e.g., UA-2007.01.01) of the master device.
	If you only have one device, this parameter has to equal ''DeviceIDs''.		If you only have one device, this parameter has to equal ''DeviceIDs''.
	If you have more ~~then~~ one device, then this parameter represents the serial number of the device whose SYNC goes to the slaves, i.e., the only device that has a cable connected at SYNC OUT, but none connected to SYNC IN.		If you have more than one device, then this parameter represents the serial number of the device whose SYNC goes to the slaves, i.e., the only device that has a cable connected at SYNC OUT, but none connected to SYNC IN.
	If only one device is connected, this parameter may be set to ''auto''.		If only one device is connected, this parameter may be set to ''auto''.

Mellinger: /* Drivers */

2024-05-16T13:32:57Z

Drivers

← Older revision		Revision as of 13:32, 16 May 2024
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	Because this feature is not needed in conjunction with the USBamp, it needs to be turned off (i.e., ''AlignChannels'' needs to be 0).		Because this feature is not needed in conjunction with the USBamp, it needs to be turned off (i.e., ''AlignChannels'' needs to be 0).

	====Drivers====		<!-- ====Drivers====
	With the release of the Version 3.0 g.USBamp, there is now a small problem with the gUSBamp.dll included in BCI2000. The DLL included with BCI2000 was intended to be used with g.USBamp Version 2.0 hardware. If Version 3.0 hardware is used with the current BCI2000 distribution, the gUSBampADC module will default to using the Version 2.0 DLL which will not function.		With the release of the Version 3.0 g.USBamp, there is now a small problem with the gUSBamp.dll included in BCI2000. The DLL included with BCI2000 was intended to be used with g.USBamp Version 2.0 hardware. If Version 3.0 hardware is used with the current BCI2000 distribution, the gUSBampADC module will default to using the Version 2.0 DLL which will not function.

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	\|Works		\|Works
	\|}		\|}
			-->

	==Parameters==		==Parameters==