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CHAPTER 2. GETTING STARTED
If other operational modes are available, a short press of the MODE button will move to the
next available operational mode. By default, a short press of the LOG button, if datalogging
is enabled, will log the currently displayed MAX value.
Figure 2.9: MAX Mode Display With ALARM Indication
2.9 COUNT Mode Operation
When entering COUNT Mode from another operational mode, the currently selected COUNT
Unit will be displayed for approximately one second. The purpose of COUNT mode is to
count for a predetermined amount of time, and to display the results on the display. Prede-
fined count times of 6 seconds, 30 seconds, 1 minute, 2 minutes, 5 minutes, and 10 minutes
are available as well as a user-defined count time and continuous counting operation (count
time displayed as 0 or the minimum display). The maximum user-defined count time is 600
seconds or 10 minutes (9:60). The maximum displayable value, regardless of units, is 999 k.
Count mode operation is very flexible, depending on the units chosen. A common choice is
for the count mode to just perform a scaler count for a specified time, with a resulting answer
in counts (equaling detected radiation events).
There are three different options for COUNT mode, which can be set through software.
Go to “Cnt Display Mode” in the Dev tab. Select the desired option:
• Timer: Will only show the countdown timer while the timer is active (default selection).
• Readings: Will only show the current gathered reading.
• Timer/Readings: Will cycle between showing the countdown timer and the current
reading.
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By default, a short press of the LOG button will start a count and automatically
log the result if datalogging is enabled. An extra-long press of the UNITS button
during the count will toggle the display between the timer and reading.
Sigma audio is completely disabled in Count Mode. Audio ‘clicks’ are disabled in COUNT
mode by default but may be enabled thru software (see Lumic 2.0 software parameter Dev-
Ludlum Measurements, Inc.
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