PCI bus interface. Spectrometric ADCs with constant conversion time
BASIC CONFIGURATIONS
Detector units can be connected to the ADC-8K-SA1 through the DB9 connector
(analogue signal are received and +12 V power is put out through these connectors).
BASIC DATA
|
Conversion method
|
Successive approximations with leveling |
|
Conversion time
|
3.5 µs
|
|
Analogue input signal
|
Polarity
|
Positive
|
|
Amplitude
|
20 mV–5 V
|
|
Rise time
|
> 0.25 µs |
|
Decay time
|
< 100 µs
|
|
Input resistance
|
2 k Ω |
|
Differencial nonlinearity (DNL)
|
< 1 %
|
|
Integral nonlinearity (INL)
|
< 0.04 %
|
|
Programmable selection of conversion resolution (number of channels)
|
1K-2K-4K-8K
|
|
Channel memory capacity
|
224-1
|
|
Real/live time setting accuracy |
5 ms
|
|
Lower-level discriminator threshold range
|
20 mV–5 V
|
|
Upper-level discriminator threshold range
|
100 mV–5 V
|
|
Spectrum correction by signals from external pile-up detector
|
+
|
|
Live time error when piled-up pulse rejection is used
|
At intensity 100000 pulses/s
|
< 7 %
|
|
At intensity 50000 pulses/s
|
< 4 %
|
|
“Ratemeter” input—logical signal with frequency up to 300 kHz
|
+
|
|
“Inhibit” input with programmable polarity
|
+
|
|
Overall dimensions |
180х110 mm
|
