Rapiscan Mobile Trace, User Manual

Page: 47 / 178

8. Press Yes.
A message displays to select the correct peak.
Figure 3-7 Particle: Neg-CAL peak
9. Remove the calibration trap, and discard it immediately.
CAUTION: A calibration trap MUST be used only once and then discarded immediately after the calibration
is performed.
10. Observe the Neg-CAL peak in the white window. Touch slightly above the top of the peak until the dot,
drift time, and peak height display.
Figure 3-8 Particle: Select the Neg-CAL peak
NOTE: The peak selected MUST be the correct peak. To determine this, you must be aware of where the
Neg-CAL peak should be located. In most cases, the peak falls in the white highlighted window. If
the peak is outside the white window, select it and press Yes to accept the selection. You must
Set Default Cal Factors before you can verify the successful calibration. ( see "Set Default Cal
Factors" on page 33 ) This shifts the white window to be centered around the newly selected peak.
11. Press OK.
A message to select the calibration substance displays.
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CHAPTER 3 │ User's Guide