17
3. SPECIFICATIONS
3.1. EASY-MCA
ADC Successive-approximation type with sliding-scale linearization.
Max Resolution
!
8K model Software-selectable as 8192, 4096, 2048, 1024, 512, and 256.
!
2K model Software-selectable as 2048, 1024, 512, and 256.
Dead Time per Event 2
μ
s, including memory transfer.
Integral Nonlinearity <±0.025% over the top 99% of the dynamic range.
Differential Nonlinearity <±1% over the top 99% of the dynamic range.
Gain Instability
#
±50 ppm/
E
C.
Dead-Time Correction Software selectable Gedcke-Hale extended live-time correction
method.
Data Memory 512 channels of battery-backed-up memory per MCB; 2
31
!
1 counts per channel
(>2×10
9
).
LLD Software-selectable from 1 to 100% full scale.
ULD Software-selectable from 0 to 100% full scale.
Presets
!
Real Time/Live Time: Multiples of 20 ms.
!
Region-of-Interest: Peak count/Integral count.
!
Data Overflow: Terminates acquisition when any channel exceeds 2
31
-1.
!
Peak Uncertainty: Stops acquisition when the statistical or counting uncertainty of a
user-selected net peak reaches the specified value.
!
Nuclide MDA Stops data collection when the value of the minimum detectable activity
(MDA) for up to 20 user-specified MDA nuclides reaches the needed value. The presets
are implemented in hardware so the computer does not have to poll the EASY-MCA for
the preset to operate. See Section 2.3.5 for details on the MDA preset calculation.
Содержание EASY-MCA-2K
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