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2.4 Real-time averaging (AVG option)
IVI-C
Functions
Function
AqMD3_NSAConfigure
AqMD3_FetchAc-
cumulatedWaveformInt32
AqMD3_FetchAc-
cumulatedWaveformReal64
Attributes
Attribute
AQMD3_ATTR_
ACQUISITION_MODE
AQMD3_ATTR_
ACQUISITION_NUMBER_
OF_AVERAGES
AQMD3_ATTR_NSA_
ENABLED
AQMD3_ATTR_NSA_
NOISE_BASE
AQMD3_ATTR_NSA_
THRESHOLD
28
Description
Configures the Noise Suppressed Accumulation prop-
erties.
This function returns the accumulated waveform
which the digitizer has acquired for the specified
channel. This waveform is from a previously initiated
accumulated acquisition in Averager or Peak Detec-
tion mode. Returned waveform data units are raw
accumulated ADC values which may be converted to
Volts by the formula: V = ScaleFactor * data +
ScaleOffset
This function returns the averaged waveform which
the digitizer has acquired for the specified channel.
This waveform is from a previously initiated accu-
mulated acquisition in Averager or Peak Detection
mode. Returned waveform data units are Volts.
Description
The acquisition mode (i.e. Averager).
Specifies the number of waveforms to average in the record. This attribute
affects card behavior only when the Acquisition Mode attribute is set to
Averager or PeakDetection.
Specifies whether the Noise Suppressed Accumulation is active. This
attribute affects card behavior only when the Acquisition Mode attribute is
set to Averager.
Specifies the noise base value for the Noise Suppressed Accumulation.
The noise base is subtracted from data values which are higher than the
configured threshold. The units are ADC counts.
Specifies the threshold of the Noise Suppressed Accumulation. Each data
value must exceed the threshold value to be entered into the sum. The
units are ADC counts.
U5309A User's Manual
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