Acqiris SA240P - Page 27

2.2 Real-time averaging mode (AVG option)
Acqiris SA240P User's Manual 27
IVI-C
Functions
Function Description
AqMD3_NSAConfigure
Configures the Noise Suppressed Accumulation prop-
erties.
AqMD3_FetchAc-
cumulatedWaveformInt32
This function returns the accumulated 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 raw accu-
mulated ADC values which may be converted to Volts
by the formula: V = ScaleFactor * data + ScaleOffset
AqMD3_FetchAc-
cumulatedWaveformReal64
This function returns the averaged waveform which the
digitizer has acquired for the specified channel. This
waveform is from a previously initiated accumulated
acquisition in Averager or Peak Detection mode.
Returned waveform data units are Volts.
Attributes
Attribute Description
AQMD3_ATTR_
ACQUISITION_MODE
The acquisition mode (i.e. Averager).
AQMD3_ATTR_
ACQUISITION_NUMBER_
OF_AVERAGES
Specifies the number of waveforms to average in the record. This attribute
affects card behavior only when the Acquisition Mode attribute is set to Aver-
ager or PeakDetection.
AQMD3_ATTR_NSA_
ENABLED
Specifies whether the Noise Suppressed Accumulation is active. This attrib-
ute affects card behavior only when the Acquisition Mode attribute is set to
Averager.
AQMD3_ATTR_NSA_
NOISE_BASE
Specifies the noise base value for the Noise Suppressed Accumulation. The
noise base is subtracted from data values which are higher than the con-
figured threshold. The units are ADC counts.
AQMD3_ATTR_NSA_
THRESHOLD
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.