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This video will demonstrate
how to configure

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the NORTEC 600 for fastener
hole inspection.

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The NORTEC 600 offers
several distinctive features.

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It has a menu of application presets

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so you can configure the instrument

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with the push of a button.

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There is no need for
filter adjustment.

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New filter settings ensure constant

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figure 6 and figure 8 signal shapes.

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The new LINK function automatically

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readjusts the filter settings

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to compensate for changes
in the RPM control.

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And, it is compatible with

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all major aircraft
manufacturer procedures.

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Generic Setup on Aluminum.

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Although the NORTEC 600 can be

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configured in various ways,

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the following method
is the fastest way

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to obtain good signals
and consistent results.

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When you connect the
scanner to the instrument,

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a menu appears. Press CONTINUE.

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With the latest software revision,

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the APPLICATION SELECTION menu

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should pop up automatically.

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Select BOLTHOLE,
and then press ACCEPT.

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Press the MAIN key,

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and enter the correct test frequency.

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The default has been set to 500 kHz.

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Before you turn on the scanner,

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hold the probe in the air

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and press the NULL key.

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To adjust the lift-off angle

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start the scanner,

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and gently position the
tip of the rotating probe

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so that is just grazes the
surface of the standard.

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Press the ANGLE key,

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and adjust the signal
so it points to the right.

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This completes
the lift-off adjustment.

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Insert the probe into a fastener hole

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that has a defect.

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Press the GAIN key

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and set the gain as desired.

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Hold the probe steady,

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and while it’s rotating
over the defect,

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press the GAIN key two more times,

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and then set the Vertical Gain

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until the signal reaches
full screen height.

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Press the MAIN key,

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and set the SCAN RPM
to the desired speed.

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If the scanning speed
increases or decreases,

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the LINK function
automatically readjusts

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the filter settings to compensate

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for any change in RPM,

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so you don’t have to do
any manual filter adjustment.

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As needed, press the MAIN key again

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and choose between the “figure 6”
and “figure 8” signal filters.

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The NORTEC 600 features a
new digital filter type

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that is capable of maintaining
the “6” or “8” figure

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regardless of changes
in the filter settings.

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This enables you to obtain
identical signals

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and a consistent detection performance

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for every inspection.

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Variation in signal response

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due to differences between instruments

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is no longer an issue.

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When you have finished,

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press the FULL/NEXT key

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to display the signals
in full-screen mode.

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The default real-time readings

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display live vertical
peak-to-peak amplitude

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and signal phase angle.

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This is useful for distinguishing
genuine indications

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from non-relevant indications.

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Alternate Configuration

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In some cases, you may not have access

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to the surface in order
to set lift-off.

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That’s okay, because the signal
phase angle can also be set

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while the probe is rotating
in the fastener hole.

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When you do it this way,

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the lift-off is actually set

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based on the vibration noise.

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Make sure that you set the signal

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as flat as possible.

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This will provide you with a

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cleaner looking sweep display.

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The sweep display can be improved

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by adjusting the SYNC ANGLE,

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which is available on the
display menu.

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Finally, you can set the display

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to meet your preferences.

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Steel Hole Configuration

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Configuring the NORTEC
for steel hole inspection

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is very similar to the
configuration that

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we just performed for
nonferromagnetic materials.

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You can follow the same steps
you have just seen

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with two main differences:

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less gain is required,

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and the defect signal
comes up at a different angle.

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Just like with nonferromagnetic
materials

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pay attention to the lift-off angle.

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Make sure that you set it
as flat as possible

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so that the sweep display
produces a clean figure.

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We hope you enjoyed
this instructional video

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on how to configure the NORTEC 600

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to inspect fastener holes.

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For more information on
Olympus eddy current solutions,

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contact your local representative

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or visit us online at
www.olympus-ims.com.