Analog Testboard E149375

DAC Plots

• Test Point V vs. DAC: Linearity
  • Left, full range; right, zoomed at low values (to show DAC turn on)
  • Fit boundary points are chosen by hand to indicate bounds of linear behavior

• Test Point V vs. DAC: Nonlinearity
  • Left, differential (percentage of current pulse height); right, integral (percentage of max pulse height)
  • Fit boundary points are consistent with linearity plots above

• • With restricted y-axis (to show nonlinearity only over linear operating range):

Pedestal Plots

	Low Gain	High Gain
COLUTA1/ADC1
COLUTA2/ADC2
DRE 4x Mode	Low Gain	High Gain
COLUTA1/ADC1
COLUTA2/ADC2

Pulse Plots

Plot Description	LAUROC1 Low Gain	LAUROC1 High Gain	LAUROC2 Low Gain	LAUROC2 High Gain
Overlayed pulses, to compare shape across amplitudes (HG cut off at 2048 due to saturation)
Linearity (Pulse height [ADC counts] vs. DAC value)
Nonlinearity of pulse height to DAC (differential)
Nonlinearity of pulse height to DAC (integral)

• Gain Plots (deriving gain ratio & comparing LG to HG)

COLUTA2

OFC Plots

Plot Description	LAUROC1 Low Gain	LAUROC1 High Gain	LAUROC2 Low Gain	LAUROC2 High Gain
E from OFCs (in ADC counts) vs Pulse Height (in ADC counts)
Energy Resolution of large, unsaturated pulse
Timing Resolution of OFCs that sample at peak
Timing Resolution of OFCs that sample just after peak
Timing Resolution using out of phase OFCs

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