ORTEC Micro-Detective-HX, Руководство по эксплуатации

Страница: 19 / 96

2. SYSTEM OVERVIEW
9
!
Each identification is reported on the real-time ID section of the screen for as long as the
source is present and identified. When the source is no longer present, its entry is removed
from the screen.
!
At the end of the survey, the cumulative spectrum is analyzed. Any identifications and their
corresponding alarms are posted as part of the End Survey report, along with the
identifications from the rolling-window, Long Sample, and Fixed Sample analyses. The
cumulative spectrum is added to the ICD1 file (which also includes the background file for
this measurement), and all analysis information is saved to the corresponding ICD2 file.
2.4.2. General Usage
As noted in the preceding section, on the Home screen, the HX passively monitors and analyzes
for alarms and identifications. Until you begin a Survey, none of this monitoring information is
recorded in data files. Note that, as shipped from the factory, radiation IDs and alarms are
suppressed on the Home screen (i.e., the Suppress IDs option, discussed on page 30, is
enabled). In the “suppressed state,” only system errors trigger alarms, cause the amber LED to
flash, and (if enabled) activate the audio and vibratory alarm signals. Users with password
access can unmark Suppress IDs to display IDs and alarms on the Home screen.
When an object requires closer investigation, start a Survey. As discussed in the preceding
section, a Survey is a single, recorded monitoring event that can be of any duration and contain
any number of Long Samples and/or Fixed Samples.
As detailed in the preceding section, the HX begins storing the spectra for all rolling-window
analyses, as well as any Long and Fixed Sample spectra in the Survey’s ICD1 file.
At the end of the Survey, the cumulative spectrum is analyzed for any low-intensity radiation
that the shorter Survey, Long Sample, and Fixed Sample analysis windows might have missed.
This final spectrum is added to the ICD1 file and all analysis information for the Survey is stored
in the corresponding ICD2 file. Any alarms from the cumulative spectrum are generated as soon
as the Survey is ended, and a summary of all Survey IDs and alarms is displayed on the End
Survey screen.
See Chapter 5 for more detailed information on performing Surveys, Long Samples, Fixed
Samples, and passive monitoring, as well as an example Survey and its end survey report.