ORTEC
®
Detective
®
X Handheld Radioisotope Identifier
1107231N / 082020
42
Figure 53. Detect Mode Integration Time
4.6.5
Low-Confidence Expert (LCX) Mode
For instances where false negatives must be eliminated at all cost, the Detective X provides a special “low-
confidence” analysis mode, intended for use by experienced spectroscopists. In LCX Mode, a new “Suspect”
class of nuclide ID alarm is presented by the Detective X. A suspect alarm is generated when a threat nuclide
is identified at a lower confidence level than that required for the standard analysis mode’s high-confidence
threat ID alarm. When enabled, LCX Mode operates in both Detect Mode and ID Mode.
Suspect alarms are posted on the display with a yellow background, as illustrated in Figure 54. Presenting
these yellow suspect alarms, in addition to the normal, high-confidence ID alarms for Innocent (green) and
Threat (red) nuclides, makes it easy to determine the information being added by enabling LCX Mode.
NOTE
While these additional suspect alarms can dramatically increase detection probability, they
can also increase false alarm probability. Therefore, it is strongly recommended to
experiment with this mode before widely deploying it.
