1107231N / 082020 4. DETECTIVE X APPLICATION
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Figure 46. Over-Range Alarm with Acknowledge Button
4.5.4
Nuclide-Identified Alarm
When the instrument is in either Detect Mode or ID Mode, it continuously analyzes the acquired data. When
a nuclide is identified, the unit will report the nuclide name in the identification list. This will be accompanied
by a short-duration audio and vibratory alarm (if enabled). The identification will remain in the list until the
source is no longer in the detector’s field of view.
In cases where the instrument is on the edge of a detection and the ID comes and goes, audio/vibratory
alarms will not be retriggered unless the identification falls out of the list for more than 15
seconds
(consistent with the duration of the Signal Index and SNM Index charts).
If the unit is configured to require the user to acknowledge all alarms, the
Acknowledge
button will latch the
nuclide ID (Figure 47), and audio and vibratory alarms (if enabled) will persist until the button is tapped.
The
Acknowledge
button will either be red (indicating a Threat source), yellow (indicating a Suspect source),
or green (indicating an Innocent source). When the
Acknowledge
button has focus, the color will become
slightly muted. That is, red will become violet, yellow will become khaki, and green will become light green.
This is intended to show which button has focus, much like the blue shading shows focus on the other user
interface buttons.
In the case of multiple simultaneous IDs, the
Acknowledge
button will present the highest-priority (i.e.,
highest threat-level) nuclides for acknowledgment first.
NOTE
The gamma dose-rate meter in the display header will continue to function up to and
beyond exposure rates of 1 R/hr
, even as the instrument’s ability to identify radiation sources
is increasingly compromised and, at very high gamma count rates, drops to zero.
