Frequency And Gain - Thermo Scientific APEX 100 User Manual

Frequency and Gain—Page 1
When testing products, setting the appropriate frequency and gain settings will
maximize the detector's ability to detect metallic contaminants.
Choosing the Optimal Settings for Frequency and Gain
When testing any product for the presence of metallic contaminants, it is best to run the
detector at high frequency (300 KHz) and high gain, because this combination gives the
best sensitivity. However, if your product has a significant product effect, as shown by
the flashing of the red indicator light on the detector's control panel when product
passes through the search head, using the high-frequency and low-gain setting will
likely remedy the situation—because the low-gain setting cuts the signal produced by
the product by a factor of 4.5.
If the high frequency/low gain setting still causes saturation, move to the low
frequency/high gain setting, and so on.
Frequency
300 KHz—High
300 KHz—High
100 KHz—Low
100 KHz—Low
Accessing the Frequency and Gain Menu
To access the frequency and gain menu, do the following.
1) From the Main Menu, use the navigation buttons to select the frequency and gain
menu.

Frequency and Gain

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Gain Ability to detect contaminants
High Excellent
Low Very good
High Good
Low Fairly good
Thermo Scientific APEX User's Guide