ORTEC digiBASE-E, Руководство пользователя

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digiBASE-E ™ High-Performance Power-over-Ethernet Multichannel Analyzer / PMT Base for Scintillation Detectors
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Figure 14. digiBASE-E Status Tab.
Figure 15. digiBASE-E: The Presets Tab.
3.1.7. Status
Figure 14 shows the Status tab. The
32-bit Event Counter functions
when the Gate function on the ADC
tab is set to EventCounter and the
digiBASE-E is actively acquiring
data in a spectrum. Under these con-
ditions, the counter accrues the
number of events at the A-IN input
since the Start command was issued.
To clear this counter, click on the
Clear Spectrum button on the
MAESTRO toolbar or issue Acquire/
Clear.
You can also retrieve the counter
value with the SHOW_MONI_VAL 0 firmware command.
3.1.8. Presets
Figure 15 shows the Presets tab.
The presets can only be set on an
instrument that is not acquiring
data (during acquisition the preset
fields are disabled). You can use
either or both presets at one time.
To disable a preset, enter a value
of zero. If you disable both presets,
data acquisition will continue until
manually stopped.
When more than one preset is
enabled (set to a non-zero value),
the first condition met during the
acquisition causes the digiBASE-E
to stop. This can be useful when
you are analyzing samples of widely varying activity and do not know the general activity before
counting. For example, the Live Time preset can be set so that sufficient counts can be obtained
for proper calculation of the activity in the sample with the least activity. But if the sample
contains a large amount of this or another nuclide, the dead time could be high, resulting in a
long counting time for the sample. If you set the ROI Peak preset in addition to the Live Time