Chapter 5 View Menu
Raw Spectrum
Pressing
View
again toggles the screen to the raw data spectrum display. The spectral
display shows 256 channels of raw counts with the full scale units at the top of the Y
axis. While viewing the spectrum, the full scale mode and value may be changed using
the up, down, left, and right arrow keys.
Using the left and right arrow keys, the full scale range may be toggled between Log,
Manually Set Linear, and Auto Scaling Linear. When in Manually Set Linear full scale
mode, the vertical full scale range may be toggled from 64 counts to 128M counts
using the up and down arrows. The full scale range wraps around after the maximum or
minimum scales are reached.
Compensated Spectrum
Pressing the
View
key a third time will show the radon compensated spectrum. This
display is characterized by the X axis appearing in the middle of the Y axis allowing
negative data to appear below the X axis. The left, right, up, and down arrows modify
the full scales the same as in the Raw Spectrum mode.
Calibration Data
System calibration values can be reviewed by pressing the View key, selecting View
Calibration Data and then selecting the desired calibration. The background and
efficiency values for the selected calibration are displayed. Pressing the View key
again will return the screen to the default display format showing remaining time for an
active count.
1.
Press the
View
key.
2.
Using the arrow keys, move the cursor “>” to item “2”, View Calibration Data.
3.
Select the calibration to view.
The system will display the background and efficiencies for the selected calibration as
shown:
Calibration 1
Bkg(cpm)
Eff(%)
α
: 0.00
41.53
β
: 28.00
47.02
Pressing the left and right arrow keys will step the display through all ten stored
calibrations.
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iMatic Automatic Counting System User's Manual - 9239221K
