| PEA-6 |  Preamplifier for Proportional Counters |
| SPECIFICATIONS | | Inputs | Signal Input | Positive or negative charge pulses up to 5x10-9 Coulomb (3x1010 ion pairs) | | | Test Input | Positive or negative, voltage input, charge-coupled to preamp | | | Power | +12 V 50mA
-12 V 25mA | | | Output | Output pulses has the inverted polarity to the input pulse | | | Rise-time | 10 nsec at 0 pF to approx. 60 nsec at 300pF | | | Fall-time | approx. 100 μsec | | | Amplitude | max ± 7.5V | | | Output Impedance | 50 Ω | | |
| | Performance | Integral Nonlinearity | Less than 0.1% for an amplitude of 0 to ± 4 V | | | Resolution (at 20 pF) | 4x10-17 Coulomb RMS (260 ion pairs RMS) | | | Stability | Better than 0.01% /° C | | | Open Loop Gain | > 50 000 | | | Sensitivity | 1V/10-¹² Coulomb(0.16µV/ion pairs/s) | | | Count Rate | 10-5 Coulomb/s (6x 1013 ion pairs/s) | | | Connectors | Input, test input, Output | | BNC | | | High voltage | | SHV | | | Input from proportional counter | | MHV Power cable 2.50m,
9 pin SUB-D connector
Pins in Ortec/Canberra standard |
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Data Acquisition Units 
