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| AMPLITUDE-TO-DIGITAL CONVERTER BPA-03-8K-W1(-SA1) | |
INTERFACE OF BUS compactPCI
Units of format 3U (overall dimensions 160x100 mm) incorporate single-channel spectrometric ADCs and are used in industrial spectrometric systems.
They are made in two versions:
- BPA-03-8K-W1
(foto), Wilkinson ADC, resolution 2K - 8K, software-specified channel width adjusted in steps of 5 µV, input signal 50 mV - 10 V;
- BPA-03-8K-SA1 (foto), ADC with a constant conversion time of 3.5 µs, software-specified
resolution 1K-2K-4K-8K and channel width of 5 mV, 2.5 mV, 1.25 mV, 0.625 mV, input signal 20 mV - 5 V.
GENERAL DATA
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Analogue input signal (BNC connector)
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Polarity
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Positive
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| Rise time |
< 0.25 µs |
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Decay time
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< 100 µs
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Input resistance
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2 k Ω
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Channel memory capacity
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224 - 1
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Real/live time setting accuracy
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5 ms
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“ Ratemeter” input - logical signal with frequency
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< 300 kHz (DB9 connector)
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“ Inhibit” input with programmable polarity
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(LEMO connector)
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BASIC DATA OF BPA-03-8K-SA1
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Conversion method
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Successive approximations with leveling
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Conversion time
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3.5 µs
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Analogue input signal amplitude
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20 mV - 5 V
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Software-based selection of resolution (number of channels)
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1K-2K-4K-8K
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Differential nonlinearity
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< 1 %
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Integral nonlinearity |
< 0.04%
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Lower-level discriminator threshold range
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20 mV - 5 V
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Upper-level discriminator threshold range
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100 mV - 5 V
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Spectrum correction by signals from the external pile-up detector
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+
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Live time error when piled-up pulse rejection is used:
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At intensity 100000 pulses/s
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< 7%
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At intensity 50000 pulses/s
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< 4%
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BASIC DATA OF BPA-03-8K-W1
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Conversion method
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Wilkinson’ s, 100 MHz
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Analogue input signal amplitude
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50 mV - 10 V
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Resolution (numbers of channels)
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2K - 8K
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Channel width, software-adjustable in steps of 5 ОјV
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2.5 mV - 10 mV |
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Differential nonlinearity
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< 1%
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Integral nonlinearity
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< 0.04%
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Channel width setting accuracy
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5%
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Temperature instability of channel width
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< 0.01%
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Lower-level discriminator threshold range
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30 mV - 10 V
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Upper-level discriminator threshold range |
100 mV - 10 V
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Print version
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