Setting The Underfill X-Ray Threshold - Filtec FT-70c Service And Technical Reference Manual

Industrial Dynamics Company, Ltd. © Form 40256-0600
Setting the Underfill X-ray Threshold
1. Place a sample production container that is empty on the
conveyor far enough upstream of the FT-70 so that it does not
slip on the chain and is positioned correctly as it passes
through the inspection tunnel.
2. Record the X-ray Counts value that appears in the X-ray
Threshold display.
3. Repeat the previous two steps four more times and then
average the value to get the average bad count (BC).
(
a
------------------------------------------- -
4. Use the following equation to determine the Underfill X-ray
Threshold.
where:
GC = Average Good Counts (step 9).
BC = Average Bad Counts (step 3).
T = Overfill X-ray Threshold.
5. Press Key 1 until you reach GAMMA THRESHOLD and use
the Arrow Key to enter the Underfill X-ray Threshold Value (T)
you calculated in step 4.
6. If you are finished configuring the FT-70, press Key 5 until you
reach SYSTEM DISPLAY and then press the Arrow Key to
return to the Operate Mode.
Chapter 4: Configuring the FT-70 for Operation
)
+ + + + b c d e
= BC
5
( )
GC + BC
--------------------------- - = T
2
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