ORTEC Micro-Detective-HX, Руководство по эксплуатации

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2. SYSTEM OVERVIEW
2.1. Basic Concepts — Access Levels and Identification Modes
The Micro-Detective-HX has two levels of access: the default level, which requires no pass-
word; and the administrator level, which requires a password (see Numerical Entries, page 7).
The factory default password is
1122
.
!
Default access allows you to perform radiation surveys, turn the audio and vibratory alarm
signals on/off, adjust the audio volume, test the alarms, check the hardware status para-
meters, perform periodic background measurements, and review the contents of survey files.
The default-access menus and commands are shown in Fig. 29 (page 34).
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Administrator (password) access to the Advanced and Comm menus lets you turn the HX
computer off, turn the cooler on/off, adjust radiation alarm thresholds, establish the para-
meters for background measurements, customize certain radionuclide library settings,
configure a number of information display options and advanced features, and set the
communication mode for the USB port. Figure 30 (page 35) shows the menus and commands
that require a password.
In addition, the HX has two radionuclide identification modes:
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The standard mode, which posts only IDs made at a high confidence level (Q).
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The LCX (Low Confidence Expert) mode, which is intended for use only by experienced
spectroscopists.
With few exceptions, this manual discusses only the standard identification mode. LCX mode is
described in Section A.5.
2.2. Notes on Using the HX
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Startup is simple — Unpack the HX, connect it to an ac power supply, turn on the computer
and cooler, allow the HPGe detector to cool down to operating temperature, set the desired
radiation thresholds, and collect a background sample representative of the intended
monitoring site. The HX is then ready for use.
!
Cooling the detector — Detector cooldown time depends on ambient conditions but
typically takes <12 hours. The cooler is designed for years of continuous operation so there
is no need to turn it off except during shipping and maintenance. See Sections 3.3.2
and 3.5.2.