Input polarity negative
Input impedance 50 Ω
Threshold -1 mV to -100 mV
Output: standard TTL signal
Maximum frequency 15 MHz for Fission Chamber
Maximum frequency 6 MHz for Proton Recoil
The CAEN Mod.A1428 is a leading-edge discriminator designed for negative pulses, with thresholds values into the range from -1 mV to -100 mV. It’s suited to work with A1427, a fast and low noise current preamplifier with AC coupled input which hosts two outputs to calculate the energy associated to the input signal and the rate.
A1427 Kit configuration is also available, that includes the A1427 and the A1428 assembled together, both for fission chambers and for proton recoil detectors.
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Packaging |
Shielded box, Dimensions: |
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No. of Channels |
1 |
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Input |
LEMO connector, negative polarity, AC coupled, 50 Ω input impedance, minimum discriminated input: -4 mV. |
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Threshold |
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Output |
LEMO connector, std. TTL signals (must be externally terminated with 50 Ω impedance), rise time ≤ 6 ns, fall time ≤ 6 ns |
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Output Width |
Trimmer settable; |
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Offset |
Trimmer settable; range -40÷+15 mV |
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Power requirements |
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