B&K 2250 Light Bedienungsanleitung PDF herunterladen (Seite 172)

160

Hand-held Analyzer Types 2250 and 2270 – User Manual

Fig.14.10

Decay view

The main decay on the display (displayed as a continuous line) is selected using the parameter

selector in the second line of the two shown above the display (T30@Pos in Fig.14.10). The

parameter selector for the main decay is linked to the selector on the Overview tab and the

parameter selector for the main spectrum on the Spectrum tab.

The reference decay on the display (displayed as a dashed line) is selected using the parameter

selector in the first line of the two shown above the display (T20@Pos in Fig.14.10). The

parameter selector for the reference decay is linked to the parameter selector for the reference

spectrum on the Spectrum tab.

The Frequency selector (with decrement and increment buttons as well), determines the

frequency of the decay curves. The Frequency selector is linked to the spectrum cursor and the

Frequency selector on the Overview tab.

In the upper right corner of the View Area, the value of a single quality indicator is displayed:

• C: xx%. The Curvature indicator – if above 10%, then the quality indicator ‘%’, meaning

‘Decay is bent’, is set

For more details of the quality indicators, see section 14.5.

Tap the Y-axis to select:

• Auto Zoom to adjust the range of the Y-axis for best fit of the measured spectrum

• Zoom In/Zoom Out to adjust the zoom

• Auto Scale to select the best scaling for viewing the spectra – without adjusting the zoom

• Scale Up/Scale Down to adjust the full scale value on the Y-axis

• Show/Hide Regression Line to show/hide the regression line and the evaluation range for

the main decay, together with the two quality indicators C and 

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B&K 2250 Light Bedienungsanleitung Seite 172