BERTHOLD TECHNOLOGIES LB 124 Scint Series - Scaler-Timer

6. Software Functions LB 124 Scint
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6.4.2 Scaler-Timer
Figure 27: Parameters for a Scaler-Timer measurement,
depending on the selected preset condition
Æ Preset Condition Here you can define the parameter that determines the end of
the measuring process: The predefined Measuring Time, the
number of Counts or the Precision. Depending on this selec-
tion, either the desired measurement time, the number of
counts or the accuracy are displayed in the following line.
Æ Meas. Time Define the measurement time, if measurement time has been
selected as preset condition.
Æ α-Nuclide
βγ-Nuclide Shows the integrated α- and βγ-counts as a measure of the sta-
tistical accuracy (if counts have been selected as preset condi-
tion). When the defined value is reached, the measurement is
terminated. The statistical error (1-σ-error) is calculated as fol-
lows:
counts
1
error lStatistica =
Example:
1%
100
1
10,000
1
counts 10,000 ===