ORTEC Detective-DX-100T, User Manual

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ORTEC
®
Detective-EX/DX
®
-100T Portable HPGe Spectrometer — User’s Manual 931040P / 1014
22
Figure 14. Alternating Status Indicator Displays.
Figure 15. Too Close
to High-Activity
Source.
Figure 16. Power Source
Icons.
2.9. The User Interface
2.9.1. Instrument Status Indicators
!
Date/Time, GPS Location, Dead Time, Battery Status, and Storage Space — The top
line in the upper right corner alternates between the date/time, latitude/longitude, and
detector dead time. The lower line switches between from the battery status (charging vs.
time to full discharge) and the number of spectra that can be stored in the currently
selected storage location. See Fig. 14.
!
When close to “hot” gamma-ray sources, the HPGe detector can become so busy proces-
sing radiation pulses that its analysis algorithm does not function as designed and speci-
fied. To avoid this problem, when the detector dead (busy) time >70%, a red warning
message is displayed in the upper right corner of the screen (Fig. 15), and persists until
you move away from the hot source.
!
Instrument Status Area — The center of the Survey Mode screen provides brief indi-
cator’s of the unit’s readiness for data acquisition. The Status is either
READY
(Fig. 23) or
Detector is warm
. In addition, warnings such as the high gamma dose rate message are
posted in this part of the screen.
!
Power Source Indicator — The four power source
icons are shown in Fig. 16. Clockwise from upper left:
(1) operating on internal battery, (2) unit properly con-
nected to the power adapter/charger, (3) operating on
external power, and (4) battery charging.
2.9.2. Moving Through the Menus
To move through the dialogs, tap the soft buttons shown on the display. The functions available
are shown on the buttons. If a function you want is not shown, it is not available from this
dialog. In some cases the function has been disabled in the Advanced Setup.
!
To select a function on a dialog, tap on the button.