The User Interface
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Tapping on the Reset button with the P v Q tab selected starts a process that captures a
graphical signal "noise ball" for the system when no product is passing through the head. This
can help to identify sources of RF interference or contamination on the belt.
By passing uncontaminated product through the metal detector, the full range of expected
P,Q values during production can be displayed.
As well as the graphical display the screen also includes data values and phase angle
information for the background noise detected.
Frequency tab
Tapping on the Capture button with the Frequency tab selected starts a process that steps
through each of the 70 available frequencies, captures the background noise levels at each
frequency and displays them on a graph which updates in real time.
If any frequency is particularly noisy, it may be possible to identify the source of the noise. For
example, there may be another machine, such as a metal detector, close by that is producing
interference at that frequency. If this source of noise cannot be corrected, this frequency
should be avoided during setup of the metal detector. This can often be done by selecting an
appropriate frequency Band to be used by the detector in the
Search Head Setup
screen.
Time tab
Tapping on the Capture button with the Time tab selected starts a process that captures the
signal at the currently set frequency and displays a scrolling graph of that signal over time.
Summary of Contents for IQ3+ST
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Page 70: ...About the Metal Detector Range 60 THIS PAGE IS INTENTIONALLY LEFT BLANK ...
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