Configuration parameters

These records control the configuration of the digital signal processing. The readback (_RBV) values may differ slightly from the output values because of the discrete nature of the system clocks and MCA bins.

These parameters are specific to a single board, and are contained in DanteN.template.

EPICS record names	Record types	drvInfo string	Description
EnableBoard, EnableBoard_RBV	bo, bi	DanteEnableBoard	Enables (1) or disables (0) a board in a Dante8. This allows using fewer than 8 channels on a Dante8.
InputMode, InputMode_RBV	mbbo, mbbi	DanteInputMode	The analog input mode. Choices are “DC_HiImp” (0), “DC_LoImp” (1). “AC_Slow” (2), and “AC_Fast” (3).
InputPolarity, InputPolarity_RBV	bo, bi	DanteInvertedInput	The pre-amp output polarity. Choices are “Pos.” (0) and “Neg.” (1).
MaxEnergy, MaxEnergy_RBV	ao, ai	DanteMaxEnergy	The actual energy of the last channel. The user must provide this value based on the energy calibration. It is used to provide meaningful units for FastThreshold, EnergyThreshold, and BaselineThreshold.
AnalogOffset, AnalogOffset_RBV	longout, longin	DanteAnalogOffset	The analog offset applied to the input signal, 0 to 255. This offset must be adjusted to keep the input signal within the range of the ADC. This should be adjusted using the ADC Trace plot with a long sampling to see the range of the input signal through a reset event.
ResetThreshold, ResetThreshold_RBV	longout, longin	DanteResetThreshold	The reset threshold in ADC units per N 8 ns sample intervals. The Dante detects a reset the signal changes by more than this amount. The standard firmware uses N=6 and this ResetThreshold value. The high-rate firmware uses N=1 and fixes ResetThreshold=256, so this parameter has no effect.
ResetRecoveryTime, ResetRecoveryTime_RBV	ao, ai	DanteResetRecoveryTime	The time in microseconds to wait after a reset event.
Gain, Gain_RBV	ao, ai	DanteGain	The gain which controls the number of ADC units per MCA bin. Gains of 1.0-8.0 are typical.
FastThreshold, FastThreshold_RBV	ao, ai	DanteFastFilterThreshold	The fast filter threshold in keV.
FastPeakingTime, FastPeakingTime_RBV	ao, ai	DanteEdgePeakingTime	The peaking time of the fast filter in microseconds.
FastFlatTopTime, FastFlatTopTime_RBV	ao, ai	DanteEdgeFlatTop	The flat top time of the fast filter in microseconds.
EnergyThreshold, EnergyThreshold_RBV	ao, ai	DanteEnergyFilterThreshold	The energy filter threshold in keV.
PeakingTime, PeakingTime_RBV	ao, ai	DantePeakingTime	The peaking time of the slow filter in microseconds.
MaxPeakingTime, MaxPeakingTime_RBV	ao, ai	DanteMaxPeakingTime	The maximum peaking time of the slow filter in microseconds. Used only with the high-rate firmware. Must be set to 0 when using the standard firmware.
FlatTopTime, FlatTopTime_RBV	ao, ai	DanteFlatTop	The flat top time of the slow filter in microseconds.
BaselineThreshold, BaselineThreshold_RBV	ao, ai	DanteEnergyBaselineThreshold	The baseline filter threshold in keV.
MaxRiseTime, MaxRiseTime_RBV	ao, ai	DanteMaxRiseTime	The maximum rise time in usec. Pulses with a longer rise time will be pileup rejected.
ZeroPeakFreq, ZeroPeakFreq_RBV	ao, ai	DanteZeroPeakFreq	The frequency of the zero-energy peak in Hz.
BaselineSamples, BaselineSamples_RBV	longout, longin	DanteBaselineSamples	The number of baseline samples. Typical value is 64.
TimeConstant, TimeConstant_RBV	ao, ai	DanteTimeConstant	The time constant. Used for digital deconvolution in the case of continuous reset signals.
BaseOffset, BaseOffset_RBV	longout, longin	DanteBaseOffset	The base offset. Used for digital deconvolution in the case of continuous reset signals.