GammaVision
®
v7 (A66-BW) 783620H / 1013
Ask On Save Options
Use these fields to enter the default sample descriptors to be saved with the spectrum. If you also mark the corresponding Ask on Save checkbox, the default value entered here will be presented for acceptance or modification when the spectrum is saved.
Sample Description allows you to designate the default sample description to be saved with the spectrum (128-character maximum for
.SPC
files; 63 characters for
.CHN
files). Marking the Ask
on Save checkbox lets you enter the common descriptors for a group of samples ahead of time, then add the unique descriptors sample-by-sample after each acquisition.
If the output activity is to be normalized to a volume or weight (or any other factor), the default
Sample Size can be entered here along with the reporting units and an optional 1-sigma uncertainty (+/-) between 0% and 1000%. This will normalize the activity, and the report will be in normalized units. This normalization is in addition to the normalization done by the Multiplier and Divisor fields on the System tab of the Sample Type Settings dialog
(Analyze/Settings/Sample Type...).
The Collection Date and Time are the time used in the decay correction. If the decay correction is enabled (see the Sample tab of the Sample Type Settings dialog), this is the date used in the correction formula.
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Sample Start/End Time
These dates/times are the start time of the sample collection and the stop time of the sample collection. For example, for air filters, the start time is the time when the air flow is started, and the stop time is when the air flow is stopped. These times are used to calculate the buildup of the activity in the sample. It is assumed that the spectrum is not collected during the buildup time.
The correction for the buildup is given in Section 5.8.4.
5.1.1.2. Export
The Export tab (Fig. 57) lets you specify the program, arguments, and file directory to be used when the Export... command is selected. If this PC has the DataMaster Spectrum File Format
Translator (A49-B32) installed, the Use DataMaster and Export As fields will be active and you can use the DataMaster export (and import) functions.
10
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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