ORTEC Detective X, Руководство пользователя

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1107231N / 082020 4. DETECTIVE X APPLICATION
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In cases where there are multiple IDs and simultaneous alarms, the index charts will display the color of the
highest priority alarm, and the highest-priority (highest threat-level) alarms will be displayed first in the list,
as illustrated in Figure 52.
Note that an ID will be removed from the IDs Box when the corresponding source leaves the detector field
of view. However, the acknowledge button (if enabled) will continue to display the ID until it has been
acknowledged. Moreover, the Identify button will be disabled until all alarms have been acknowledged.
Figure 52. Threat Source Shown in ID List
If more than 2 nuclides are identified, a scroll bar will be displayed on the right edge of the box so the user
can scroll down and view all entries.
4.6.4 Detect Mode Integration Time
By default, Detect Mode analyzes data collected over the last 8 seconds, and repeats this every 0.5 second.
Detect Mode is suited to situations where the instrument is being moved in relation to a radioactive source.
Note that the dose rate, gamma count rate, and neutron count rate (if equipped) bar charts are normalized
across this integration time. Changing the integration time will make these graphs either more or less
responsive.
Ideally, the integration time should be matched to the amount of time a possible point source would be in
the field of view of the detector. For typical search scenarios, where an operator is carrying the instrument
and slowly walking past a source that is perhaps 1 m (3 ft) away, an 8-second integration time is a reasonable
value. As distance to the source increases or as speed decreases, a longer integration time will produce better
sensitivity. In scenarios where the source might be speeding past the instrument in close proximity, a shorter
integration time will be better.
To change the Integration time :

From the Advanced Setup screen, tap Analysis to open the page shown in Figure 53.

Tap and drag the slider to adjust the Integration time from 1 to 30 seconds. Note that this integration
time has no effect in ID Mode.