QLCSlowConfig Class Reference

List of all members.

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Detailed Description

data collector for load curve single measurement front end settings

Author:

sergio.didomizio@ge.infn.it

This class contains front end measurement settings needed for load curves procedure. Front end parameters are represented by the integer value associated to the register binary configuration for that parameter, or by a bool value in case that setting is determined by a single bit. For each parameter 2 different getter exist:

• one that returns the bitwise value for that parameter (ex: GetGain())
• one that returns the real value for that parameter (ex: GetRealGain())

Public Member Functions
	QLCSlowConfig ()
	constructor
	QLCSlowConfig (const QLCSlowConfig &config)
virtual	~QLCSlowConfig ()
	destructor
void	SetInput (bool input)
	set FE input
void	Dump (std::ostream &o) const
	dump data on stream
bool	operator< (const QLCSlowConfig &other) const
	operator< based on lg
bool	operator== (const QLCSlowConfig &other) const
	operator== based on every member except fConfigId
unsigned short	GetLg () const
	get logical channel number
unsigned short	GetBias () const
	get bias voltage bitwise code
float	GetRealBias () const
	get bias voltage in units of volts
unsigned short	GetGain () const
	get gain bitwise code
float	GetRealGain () const
	get gain in real units
bool	GetBiasPolarity () const
	get bias voltage polarity
bool	GetLoadResistance () const
	get load resistance
float	GetRealLoadResistance () const
	get load resistance (in GigaOhm)
unsigned short	GetOffsetDac () const
	get offset dac bits
unsigned short	GetOffsetHiBits () const
	get offset Hi bits
bool	GetOffsetSBit () const
	get offset dac bits
bool	GetOffsetPolarity () const
	get offset polarity
float	GetRealOffset () const
	get offset voltage
float	GetExternalBias () const
	get nominal value of external bias in Volts
float	GetRealExternalBias () const
	get real value of external bias in Volts
bool	GetAdjustOffset () const
	get logical channel number
unsigned int	GetId () const
	get congif Id
bool	GetInput () const
	get input
bool	SetLg (const unsigned short lg)
	set logical channel
bool	SetBias (const unsigned short bias)
	set bias
bool	SetGain (const unsigned short gain)
	set amplifier gain
void	SetBiasPolarity (const bool polarity)
	set bias polarity
void	SetLoadResistance (const bool resistance)
	set load resistance
bool	SetOffset (const unsigned short dacBits, const unsigned short hBits, const bool polarity, const bool sBit)
	set offset bits
void	SetAdjustOffset ()
	set offset to be adjusted by mean of automatic hw procedure
void	SetExternalBias (float externalBias)
	set nominal value of external bias in Volts
void	SetRealExternalBias (float realExtBias)
	set real value of external bias in Volts
Protected Attributes
unsigned short	fLgChannel
	logical channel
unsigned int	fConfigId
unsigned short	fBias
unsigned short	fGain
bool	fBiasPolarity
bool	fLoadResistance
unsigned short	fOffDac
unsigned short	fOffHiBits
bool	fOffSBit
	offset s-bit
bool	fOffPolarity
float	fExternalBias
float	fRealExternalBias
bool	fAdjustOffset
bool	fInput
Friends
class	QLCSlowConfigHandler
class	QWPSlowConfigHandler

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Member Function Documentation

float QLCSlowConfig::GetRealOffset

(

)

const

get offset voltage

Returns:

a rough estimation of offset voltage before the pre-amplifier

The estimation of the offset is based on the assumption (not true) that when the offset bits are set to zero the output offset is zero, and that all the 14 bits that can be used to tune the offset are linear between 0 and 80 mV (or 0 and -80 mV, depending on the offset polarity). Actually the zero point is smaller than zero for positive polarity and bigger than zero for negative polarity, in order to avoid possible gaps. Moreover the range might be something different from 80 mV and the linearity of the 2 MSB is not guaranteed.

bool QLCSlowConfig::SetGain

(

const unsigned short

gain

)

set amplifier gain

Parameters:

gain

amplifier gain bitwise code

void QLCSlowConfig::SetBiasPolarity

(

const bool

polarity

)

[inline]

set bias polarity

Parameters:

polarity

bias polarity (true positive, false negative)

bool QLCSlowConfig::SetOffset	(	const unsigned short	dacBits,
		const unsigned short	hBits,
		const bool	polarity,
		const bool	sBit
	)

set offset bits

Parameters:

	dacBits	offset DAC bits between 0 and 4095
	hBits	high order bits (0..3)
	polarity	offset polarity (false=negative, true=positive)
	sBit	special bit

Returns:

true unless one of dacBits or hBits is out of range. in this case none of the offset values is modified

void QLCSlowConfig::SetAdjustOffset

(

)

set offset to be adjusted by mean of automatic hw procedure

Calling this function will reset all offset-related quantities that are stored into the object

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Member Data Documentation

unsigned int QLCSlowConfig::fConfigId [protected]

front end settings identifier

unsigned short QLCSlowConfig::fBias [protected]

front end bias value (0..31)

unsigned short QLCSlowConfig::fGain [protected]

front end gain value (0..31)

bool QLCSlowConfig::fBiasPolarity [protected]

front end bias polarity

bool QLCSlowConfig::fLoadResistance [protected]

load resistance (2 possible values)

unsigned short QLCSlowConfig::fOffDac [protected]

offset dac bits, 0..4095)

unsigned short QLCSlowConfig::fOffHiBits [protected]

offset high order bits (0..3)

bool QLCSlowConfig::fOffSBit [protected]

offset s-bit

this bit adds further ~ +40mV to the offset, no matter what the offset polarity is

bool QLCSlowConfig::fOffPolarity [protected]

offset polarity

float QLCSlowConfig::fExternalBias [protected]

nominal external bias voltage

float QLCSlowConfig::fRealExternalBias [protected]

real external bias voltage

bool QLCSlowConfig::fAdjustOffset [protected]

used request a call to the automatic offset adjustment procedure to be executed

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The documentation for this class was generated from the following files:

• /usr/local/cuore/pkg/moddaq/QLCSlowConfig.hh
• /usr/local/cuore/pkg/moddaq/QLCSlowConfig.cc

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