GammaVision
®
v7 (A66-BW) 783620H / 1013
Sample Type Defaults
The sample type file, which contains many of the parameters needed for analysis and acquisition, can be specified here. The file is created in the Sample Type Settings dialog, Section 5.5.1.1.
When specified, the file is read and the values in it are the defaults for this dialog. If the Ask on
Start box is checked, GammaVision will ask for the sample type when Detector acquisition starts, and the values in that file will be used. Click Browse... to show the available files.
Acquisition Presets
If the Ask on Start box is checked, the presets are asked when the Detector is started; the dialog is the same as the Preset tab for this Detector’s MCB Properties dialog. Only the non-zero presets can be changed during the start.
Sample Description
The sample description can be entered here, and it can also be asked for when the spectrum is saved. If the Ask on Start box is checked, the description entered here will be presented as the default at the start of data acquisition. This feature is handy when processing a number of similar samples; the common part of the description can be entered here, and the unique descriptors can be added on start.
Sample Size
If the output activity is to be normalized to a volume or weight (or any other factor), the sample quantity can be entered here, along with an optional 1-sigma uncertainty (+/-) between 0% and
1000%. The reporting units are entered, according to the sample type, on the System tab under
Analyze/ Settings/Sample Type... (page 152). This will normalize the activity and the report will be in normalized units. This normalization is in addition to any normalization done by the multiplier and divisor on the Analysis tab under Analyze/Settings/Sample Type... (page 152).
Collection Date and Time
If the decay correction is enabled (see the Sample tab under Analyze/Settings/Sample Type...,
Section 5.5.1.1), the collection date and time are used in the correction formula.
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If the collection date and time is before that of the spectrum acquisition, the spectrum will be activity-corrected back to the sample collection time. While this is the normal use of this input, if the collection date and time is after the acquisition time, the decay correction will be made forward in time.
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