ORTEC DSPEC Pro, Hardware User Manual

Page: 59 / 108

794380D / 0914 3. SPECIFICATIONS
49
The DSPEC Pro uses the following DIMs:
!
DIM-POSGE For any non-SMART-1, positive-bias, HPGe detector (includes leads
with mating connectors for existing detector cabling), +500 V to
+5000 V.
!
DIM-NEGGE For any non-SMART-1, negative-bias HPGe detector (includes leads
with mating connectors for existing detector cabling),
!
500 V to
!
5000 V.
!
DIM-POSNAI For any positive-bias NaI detector (includes leads with mating
connectors for existing detector cabling), +100 V to +1800V, 300
µ
A.
!
DIM-296 For any positive-bias NaI detector (includes Model 296 ScintiPack
tube base/preamplifier/bias supply for NaI detectors with 14-pin, 10
stage photo multiplier tubes), 0 V to +1200 kV.
In all cases except the DIM-296, the bias voltage setting and shutdown polarity are set via
MAESTRO or other C
ONNECTIONS
software.
The SMART-1 detector provides detector state-of-health information as discussed above and in
Section 1.7.
3.3. Feature Mask Bits
The following table describes the feature bits from the SHOW_FEATURES command discussed
on page 74. If the feature is supported in the DSPEC Pro the bit is set to 1; if the feature is not
supported, the bit is 0.
Bit Meaning
0 Software-selectable conversion gain
1 Software-selectable coarse gain
2 Software-selectable fine gain
3 Gain stabilizer
4 Zero stabilizer
5 PHA mode functions available
6 MCS mode functions available
7 List mode functions available
8 Sample mode functions available
9 Digital Offset (e.g., 920)