niScope Fetch Measurement (poly)

instrument handle identifies a particular instrument session.

channels specifies the channel from which to acquire data.

For more information, refer to Channel String Syntax.

array measurement is the array measurement to add as a processing step.

Default Value: None

Refer to the list of NI-SCOPE Array Measurements for more information.

timeout is the time (in seconds) to wait for the data to be acquired. Use 0 for this parameter to tell NI-SCOPE to fetch whatever is currently available. Using -1 for this parameter implies infinite timeout.

error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

meas waveform size is the maximum number of samples returned in the measurement waveform array for each waveform measurement.

Default Value: –1 (returns all available samples)

Note  Use the property Fetch Meas Num Samples to set the number of samples to fetch when performing a measurement. For more information about when to use this property with the niScope Fetch Measurement VI, refer to the NI KnowledgeBase.

instrument handle out has the same value as the instrument handle.

meas wfm info contains all the timing and scaling information about the waveform.

	actualSamples is the actual number of samples in the acquired waveform; this number may be less than numSamples if the number you request is not available.
	absoluteInitialX is the timestamp in seconds of the first fetched sample. This timestamp is comparable between records and acquisitions; devices that do not support this parameter use 0 for this output.
	relativeInitialX is the time in seconds from the trigger to the first sample in the acquired waveform.
	xIncrement indicates the time in seconds between two samples in the acquired waveform.
	offset is the offset factor of the given channel. Use for scaling binary data with the following formula: voltage = binary data × gain factor + offset
	gain is the gain factor of the given channel. Use for scaling binary data with the following formula: voltage = binary data × gain factor + offset
	reserved1 is reserved. Do not use.
	reserved2 is reserved. Do not use.

meas waveform returns a single record for single channel as a cluster for wiring to a graph, including the timing information.

	relativeInitialX is the time in seconds from the trigger to the first sample in the acquired waveform.
	xIncrement indicates the time in seconds between two samples in the acquired waveform.
	measWfm returns a one-dimensional array of data for one waveform.

error out contains error information. This output provides standard error out functionality.

instrument handle identifies a particular instrument session.

channels specifies the channel from which to acquire data.

For more information, refer to Channel String Syntax.

array measurement is the array measurement to add as a processing step.

Default Value: None

Refer to the list of NI-SCOPE Array Measurements for more information.

timeout is the time (in seconds) to wait for the data to be acquired. Use 0 for this parameter to tell NI-SCOPE to fetch whatever is currently available. Using -1 for this parameter implies infinite timeout.

error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

meas waveform size is the maximum number of samples returned in the measurement waveform array for each waveform measurement.

Default Value: –1 (returns all available samples)

Note  Use the property Fetch Meas Num Samples to set the number of samples to fetch when performing a measurement. For more information about when to use this property with the niScope Fetch Measurement VI, refer to the NI KnowledgeBase.

instrument handle out has the same value as the instrument handle.

meas wfm info contains all the timing and scaling information about the waveform.

	actualSamples is the actual number of samples in the acquired waveform; this number may be less than numSamples if the number you request is not available.
	absoluteInitialX is the timestamp in seconds of the first fetched sample. This timestamp is comparable between records and acquisitions; devices that do not support this parameter use 0 for this output.
	relativeInitialX is the time in seconds from the trigger to the first sample in the acquired waveform.
	xIncrement indicates the time in seconds between two samples in the acquired waveform.
	offset is the offset factor of the given channel. Use for scaling binary data with the following formula: voltage = binary data × gain factor + offset
	gain is the gain factor of the given channel. Use for scaling binary data with the following formula: voltage = binary data × gain factor + offset
	reserved1 is reserved. Do not use.
	reserved2 is reserved. Do not use.

measWfm returns a one-dimensional array of data for one waveform.

error out contains error information. This output provides standard error out functionality.

instrument handle identifies a particular instrument session.

channels specifies the channel from which to acquire data.

For more information, refer to Channel String Syntax.

array measurement is the array measurement to add as a processing step.

Default Value: None

Refer to the list of NI-SCOPE Array Measurements for more information.

timeout is the time (in seconds) to wait for the data to be acquired. Use 0 for this parameter to tell NI-SCOPE to fetch whatever is currently available. Using -1 for this parameter implies infinite timeout.

error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

meas waveform size is the maximum number of samples returned in the measurement waveform array for each waveform measurement.

Default Value: –1 (returns all available samples)

Note  Use the property Fetch Meas Num Samples to set the number of samples to fetch when performing a measurement. For more information about when to use this property with the niScope Fetch Measurement VI, refer to the NI KnowledgeBase.

instrument handle out has the same value as the instrument handle.

wfm info contains all the timing and scaling information about the waveform.

	actualSamples is the actual number of samples in the acquired waveform; this number may be less than numSamples if the number you request is not available.
	absoluteInitialX is the timestamp in seconds of the first fetched sample. This timestamp is comparable between records and acquisitions; devices that do not support this parameter use 0 for this output.
	relativeInitialX is the time in seconds from the trigger to the first sample in the acquired waveform.
	xIncrement indicates the time in seconds between two samples in the acquired waveform.
	offset is the offset factor of the given channel. Use for scaling binary data with the following formula: voltage = binary data × gain factor + offset
	gain is the gain factor of the given channel. Use for scaling binary data with the following formula: voltage = binary data × gain factor + offset
	reserved1 is reserved. Do not use.
	reserved2 is reserved. Do not use.

meas waveform returns an array of clusters for wiring to a graph, including the timing information.

If you specify a channel list, NI-SCOPE returns the waveforms in the list order. NI-SCOPE returns these records sequentially, so all record 0 waveforms are first. For example, with a two-channel list, you would have the following index values:

index 0 = record 0, channel 0

index 1 = record 0, channel 1

index 2 = record 1, channel 0

index 3 = record 1, channel 1

	relativeInitialX is the initial x value relative to the trigger, such that the trigger always occurs at time equals zero.
	xIncrement indicates the time in seconds between two samples in the acquired waveform.
	measWfm returns a one-dimensional array of data for one waveform.

error out contains error information. This output provides standard error out functionality.

instrument handle identifies a particular instrument session.

channels specifies the channel from which to acquire data.

For more information, refer to Channel String Syntax.

array measurement is the array measurement to add as a processing step.

Default Value: None

Refer to the list of NI-SCOPE Array Measurements for more information.

timeout is the time (in seconds) to wait for the data to be acquired. Use 0 for this parameter to tell NI-SCOPE to fetch whatever is currently available. Using -1 for this parameter implies infinite timeout.

error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

meas waveform size is the maximum number of samples returned in the measurement waveform array for each waveform measurement.

Default Value: –1 (returns all available samples)

Note  Use the property Fetch Meas Num Samples to set the number of samples to fetch when performing a measurement. For more information about when to use this property with the niScope Fetch Measurement VI, refer to the NI KnowledgeBase.

instrument handle out has the same value as the instrument handle.

wfm info contains all the timing and scaling information about the waveform.

	actualSamples is the actual number of samples in the acquired waveform; this number may be less than numSamples if the number you request is not available.
	absoluteInitialX is the timestamp in seconds of the first fetched sample. This timestamp is comparable between records and acquisitions; devices that do not support this parameter use 0 for this output.
	relativeInitialX is the time in seconds from the trigger to the first sample in the acquired waveform.
	xIncrement indicates the time in seconds between two samples in the acquired waveform.
	offset is the offset factor of the given channel. Use for scaling binary data with the following formula: voltage = binary data × gain factor + offset
	gain is the gain factor of the given channel. Use for scaling binary data with the following formula: voltage = binary data × gain factor + offset
	reserved1 is reserved. Do not use.
	reserved2 is reserved. Do not use.

wfm is an array of waveforms; that is, a two-dimensional array. This output can be wired directly to the LabVIEW waveform graph, but each waveform is plotted without timing information.

The 2D array includes waveforms from multiple channels, records, and acquisition types. For example, if the acquisition type is normal, there is one waveform per channel per record. If you call the fetch VI during a normal acquisition with the channel string "0,1" and the record number set to –1, the order of the output is:

record 0, channel 0

record 0, channel 1

record 1, channel 0

record 1, channel 1

The order of the channels is the order specified by the channels parameter.

error out contains error information. This output provides standard error out functionality.

instrument handle identifies a particular instrument session.

channels specifies the channel from which to acquire data.

For more information, refer to Channel String Syntax.

scalar measurement is the measurement to perform on the waveform read from the digitizer.

Refer to the list of NI-SCOPE Scalar Measurements for more information.

timeout is the time (in seconds) to wait for the data to be acquired. Use 0 for this parameter to tell NI-SCOPE to fetch whatever is currently available. Using -1 for this parameter implies infinite timeout.

error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

instrument handle out has the same value as the instrument handle.

stats contains the resulting measurement data.

	result contains the measurement acquired.
	mean returns the mean scalar value, which is obtained by averaging each niScope Fetch Measurement Stats call.
	stdev returns the standard deviation.
	min returns the smallest scalar value acquired.
	max returns the largest scalar value acquired.
	num in stats returns the number of measurements used to calculate the statistics.

error out contains error information. This output provides standard error out functionality.

instrument handle identifies a particular instrument session.

channels specifies the channel from which to acquire data.

For more information, refer to Channel String Syntax.

scalar measurement is the measurement to perform on the waveform read from the digitizer.

Refer to the list of NI-SCOPE Scalar Measurements for more information.

timeout is the time (in seconds) to wait for the data to be acquired. Use 0 for this parameter to tell NI-SCOPE to fetch whatever is currently available. Using -1 for this parameter implies infinite timeout.

error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

instrument handle out has the same value as the instrument handle.

stats is an array of clusters with scalar measurement results and statistics.

The array of clusters includes waveforms from multiple channels, records, and acquisition types. For example, if the acquisition type is normal there is one waveform per channel per record. If you call the multi fetch measurement VI during a normal acquisition with the channel list "0,1", the order of the results output is:

statistics for record 0, channel 0,

statistics for record 0, channel 1,

statistics for record 1, channel 0,

statistics for record 1, channel 1

The order of the channels is the order specified by the channels parameter.

	scalar result contains the measurement.
	mean returns the mean scalar value, which is obtained by averaging each niScope Multi Fetch Measurement Stats call.
	stdev returns the standard deviation.
	min returns the smallest scalar value acquired.
	max returns the largest scalar value acquired.
	num in stats returns the number of measurements used to calculate the statistics.

error out contains error information. This output provides standard error out functionality.

instrument handle identifies a particular instrument session.

channels specifies the channel from which to acquire data.

For more information, refer to Channel String Syntax.

scalar measurement is the measurement to perform on the waveform read from the digitizer.

Refer to the list of NI-SCOPE Scalar Measurements for more information.

timeout is the time (in seconds) to wait for the data to be acquired. Use 0 for this parameter to tell NI-SCOPE to fetch whatever is currently available. Using -1 for this parameter implies infinite timeout.

error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

instrument handle out has the same value as the instrument handle.

result contains the measurement acquired.

error out contains error information. This output provides standard error out functionality.

instrument handle identifies a particular instrument session.

channels specifies the channel from which to acquire data.

For more information, refer to Channel String Syntax.

scalar measurement is the measurement to perform on the waveform read from the digitizer.

Refer to the list of NI-SCOPE Scalar Measurements for more information.

timeout is the time (in seconds) to wait for the data to be acquired. Use 0 for this parameter to tell NI-SCOPE to fetch whatever is currently available. Using -1 for this parameter implies infinite timeout.

error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

instrument handle out has the same value as the instrument handle.

results contains the measurements acquired as a one-dimensional array; if you specify a channel list, NI-SCOPE returns the waveforms in the list order. NI-SCOPE returns these records sequentially, so all record 0 waveforms are first.

For example, with a two-channel list, you would have the following index values:

index 0 = record 0, channel 0

index 1 = record 0, channel 1

index 2 = record 1, channel 0

index 3 = record 1, channel 1

error out contains error information. This output provides standard error out functionality.