931003E / 0620
3. SPECIFICATIONS
Number of List Mode Units per Computer
When multiple units are used in a list mode
application, the limited bandwidth of the USB bus sets a practical limit on the number of units
that can send data to a single computer. The total data rate of all units should be kept less than
200 kcps. The following chart gives typical maximum pulse rates for various numbers of units.
This is discussed in detail in Section A.2.
Number of digiBASEs
Maximum Pulse Rate (typ)
4
50 kcps
5
40 kcps
6
33 kcps
8
25 kcps
Histogram Mode Acquisition
Data is histogrammed inside the digiBASE. Data channels are
31 bits. Most significant bit is ROI bit.
3.2. Computer Controls and Indicators
All controls and readouts are implemented in the MAESTRO MCA Emulation Software
included with the digiBASE. For more complex applications, the digiBASE is completely
compatible with our GammaVision spectroscopy application software.
3.3. Electrical, Mechanical, and Environmental
Dimensions
2.48 in. D × 3.43 in. L (63 mm × 87 mm)
Weight
10.1 oz (287 g)
Power Requirement
<500 mA from USB connection.
Ambient Operating Environment
!
10 to +50°C at 0–80%; non-condensing humidity.
NOTE
The digiBASE will operate at
!
10°C, however, at power-on it should be at least 0°C for
proper startup.
CE
Conforms to CE standards for radiated and conducted emissions, susceptibility and low-
voltage power directives.
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