Demonstration Mode
Gem-5 User’s Manual 313
F7 – Out of Service
For the Out of Service screen, High Count Time, High Background, Decision
Threshold, Excessive Background, Detector Contaminated, High Background
Detector Contaminated and High Count Time Detector Contaminated messages are
the Space Key alternate screens.
F8 – Messages
For the Messages screen, a “Stay Back” variation for when an approach sensor is
activated during “Initializing Background” exists. See the F3 – Setup, F1 – Common
Values, Approach Sensor during Initialize Background setting. Also, see the
F3 – Setup, F11 – Instructions, F8 – Messages, Stay Back setting. The “Go Back”
variation is qualified by reason (“Position Timeout”, “Background Change”, “Manual
Stop”, and “Dosimeter Reader Fault”. “Decision Threshold”). See F3 – Setup, F11 –
Instructions, F3 – Go Back settings. The Please Wait – Initializing variation can show
“Database Maintenance” in lower left when appropriate. See Ctrl+F10 – Factory
Setup, F9 – Database settings and F3 – Setup, F11 – Instructions, F8 – Messages,
Database Maintenance setting.
F10 – Cold Side
F10 – Cold Side is used for Cold to Hot “Pass Through” mode as set on the
Ctrl+F10 – Factory Setup, F4 – Access Configuration screen on page 28.
F11 – Alarm Test
For F11 – Alarm Test it shows the demonstration Alarm Test screen as specified by
the Alarm Test Type setting. For the Alarm Test screen, display of “Background
Change” variation when enabled on F3 – Setup, F3 – Detection Zones, F7 – Alarm
Test Settings, Measurement Variance Ratio Limit Exceeded setting exists. In
addition, the High Count Time message is one of the Space Key alternate screens.
Demonstration Mode
In Demonstration mode, the hardware (Carrier Board, Sensor Board, and Detector
Boards) is not accessed so that the program can run on any computer operating
Windows XP or above. All menu options are available and operation screens can be
viewed via the Demonstration Display Menu above. Note that the unit cannot be
returned to normal service (F1 on Service Menu) when Demonstration mode is in
effect. A command line option “/DEMO” can be used for this mode. When program
is run with this option then on “Demonstration” setting is forced “YES” and can not
be changed. Also, the SETTINGS, HISTORY, and DATALOG folders are placed in
the system Temporary folder to allow demonstration to be run from a CD. The word
“Demonstration” appears as a magenta banner centered across top of screen when
collecting data in demonstration mode. Demonstration mode uses a random number
generator when collecting data. The technique used is an internal state machine that
simulates sensor inputs with specific sequence and delays. Also, note that in
Demonstration mode, Calibration causes the system to calibrate to factory default
efficiency.
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