A2DConverter for applying a linear conversion to A2D counts values. More...

#include <A2DConverter.h>

Inheritance diagram for nidas::core::LinearA2DConverter:

Public Member Functions
	LinearA2DConverter (int nchan)

	~LinearA2DConverter ()

float	convert (int ichan, float counts) const
	Convert a count to a floating point value.

void	set (int ichan, const float *d, int nd)
	Set the initial linear conversion for a channel.

void	get (int ichan, float *d, int nd) const

void	setNAN (int ichan)

void	setNAN ()

int	getMaxNumChannels () const
	Maximum possible number of channels.

int	getNumConfigChannels () const
	One plus the index of the last active channel.

int	getGain (int ichan) const
	Gain of each channel.

void	setGain (int ichan, int val)

int	getBipolar (int ichan) const

void	setBipolar (int ichan, int val)

void	readCalFile (CalFile *cf, dsm_time_t tt)
	Read records from a CalFile for calibration coefficients with time tags less than or equal to tt, assuming they are in increasingg order in the file.

Protected Attributes
int	_maxNumChannels
	How many channels on the A2D.

int	_numConfigChannels
	A configured channel has a gain > 0.

int	_ncoefs
	Number of coefficients in the conversion.

int *	_gain
	Gain setting of each channel.

int *	_bipolar
	Polarity setting, 1=bi-polar.

Private Member Functions
	LinearA2DConverter (const LinearA2DConverter &x)
	No copy.

LinearA2DConverter &	operator= (const LinearA2DConverter &x)
	No assign.

Private Attributes
float *	_b
	Conversion intercepts for each channel.

float *	_mx
	Conversion slopes for each channel.

Detailed Description

A2DConverter for applying a linear conversion to A2D counts values.

Constructor & Destructor Documentation

◆ LinearA2DConverter() [1/2]

LinearA2DConverter::LinearA2DConverter ( int nchan )

References _b, _mx, and nidas::core::getSample().

◆ ~LinearA2DConverter()

LinearA2DConverter::~LinearA2DConverter ( )

References _b, and _mx.

◆ LinearA2DConverter() [2/2]

nidas::core::LinearA2DConverter::LinearA2DConverter ( const LinearA2DConverter & x )

private

No copy.

Member Function Documentation

◆ convert()

float LinearA2DConverter::convert	(	int	ichan,
		float	counts ) const

virtual

Convert a count to a floating point value.

Implements nidas::core::A2DConverter.

References _b, nidas::core::A2DConverter::_maxNumChannels, _mx, and nidas::core::getSample().

◆ get()

void LinearA2DConverter::get	(	int	ichan,
		float *	d,
		int	nd ) const

virtual

Implements nidas::core::A2DConverter.

References _b, nidas::core::A2DConverter::_maxNumChannels, _mx, and nidas::core::getSample().

◆ getBipolar()

int A2DConverter::getBipolar ( int ichan ) const

inherited

References nidas::core::A2DConverter::_bipolar, nidas::core::A2DConverter::_maxNumChannels, and nidas::core::getSample().

Referenced by nidas::dynld::raf::A2D_Serial::getBipolar().

◆ getGain()

int A2DConverter::getGain ( int ichan ) const

inherited

Gain of each channel.

An A2DConverter needs to know the gain and bipolarity because it reads the cal file and there are typically cal records for each gain and polarity.

References nidas::core::A2DConverter::_gain, nidas::core::A2DConverter::_maxNumChannels, and nidas::core::getSample().

Referenced by nidas::dynld::raf::A2D_Serial::getGain().

◆ getMaxNumChannels()

int nidas::core::A2DConverter::getMaxNumChannels ( ) const

inlineinherited

Maximum possible number of channels.

References nidas::core::A2DConverter::_maxNumChannels.

◆ getNumConfigChannels()

int nidas::core::A2DConverter::getNumConfigChannels ( ) const

inlineinherited

One plus the index of the last active channel.

An active channel has a gain > 0.

References nidas::core::A2DConverter::_numConfigChannels.

Referenced by nidas::core::A2DConverter::readCalFile().

◆ operator=()

LinearA2DConverter & nidas::core::LinearA2DConverter::operator= ( const LinearA2DConverter & x )

private

No assign.

◆ readCalFile()

void A2DConverter::readCalFile	(	CalFile *	cf,
		dsm_time_t	tt )

inherited

Read records from a CalFile for calibration coefficients with time tags less than or equal to tt, assuming they are in increasingg order in the file.

Each record has a gain and bipolar value after the time, followed by coefficients for each channel.

A calibration record is used for a channel if its gain and bipolar fields match the values for the configured channel. A gain value of -1 in the file is a wildcard, matching any configured gain for a channel, and likewise for the bipolar value.

readCalFile() expects there to be getNumConfigChannels() X _ncoefs number of coefficients after the time, gain and bipolar fields in each CalFile record. If there are less than the expected number, a warning is logged, and missing coefficients are set to floatNAN.

Exceptions

EOFException, IOException, ParseException

References nidas::core::A2DConverter::_bipolar, nidas::core::A2DConverter::_gain, nidas::core::A2DConverter::_ncoefs, nidas::core::A2DConverter::getNumConfigChannels(), nidas::core::getSample(), LOG_WARNING, nidas::core::A2DConverter::set(), and nidas::core::A2DConverter::setNAN().

Referenced by nidas::dynld::raf::A2D_Serial::process().