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This video will demonstrate how
to configure the NORTEC 600

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for surface and
subsurface inspections.

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The NORTEC 600 can be
configured in various ways.

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The following method is the
fastest way

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to obtain good signals

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and consistent results.

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Connect the probe to the Nortec 600

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and turn the instrument on.

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With the latest software revision,

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the Application Selection menu will
pop up automatically.

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Select Surface Cracks
and press the checkmark key.

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Enter the correct test frequency.

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For our purposes we will use a
default frequency of 500kHz.

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Press DISP and move the crosshair

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using the C key which
is the position option.

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We will set the position
to bottom center by using the knob.

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There are five commonly used
industry presets

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to facilitate the placement
of the crosshair.

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A sixth preset is available
for user customization.

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Place the probe on a defect
free area of the standard.

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Press and hold the null key.

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This will activate the
auto lift off function.

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When you hear the beep,
lift the probe.

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The cursor should appear on the
horizontal axis to the far left.

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If it does not, repeat the step.

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Now put the probe on a defect
free area

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and press null once.

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Scan the sample
and press the freeze key.

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Once in Freeze mode, an F should
appear below the battery indicator.

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Freeze mode enables the user

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to calibrate the signal
using both hands.

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Press the main key to
fine tune the horizontal angle

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and try to set it as flat as possible.

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Use the knob to adjust the angle

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and the checkmark key to go from
coarse to fine tuning.

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Pressing the gain key once
will enable the user

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to modify both the Horizontal
and Vertical gains together.

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Press the Gain key once more
to modify the H Gain.

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Reduce the gain so that
the highest signal

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covers about 3 horizontal divisions.

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Press the gain key again
to modify the V gain.

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Increase the gain so
that the highest signal

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covers about 90% of the screen height.

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Once completed press freeze.

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Press Full Next to enter
full screen mode.

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Place the probe on a defect free
area and press null.

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Rescan the standard,

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The newly acquired scan
is now calibrated.

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Subsurface Cracks -
Generic Setup on Aluminum.

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For subsurface crack inspection

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connect an appropriate probe
to the Nortec 600.

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Press the advanced setup key,
then application selection.

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Select subsurface from the menu
using the knob

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and press the checkmark key to accept.

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Press the main key
to set the frequency.

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In this case we know
the correct frequency

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and we will set it using the knob.

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The NORTEC 600 includes a useful
slide rule tool

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for determining the standard
depth of penetration

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for a given material
at a specified frequency.

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The user can select a material
from the list

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and modify the frequency

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to determine the depth of penetration.

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To access the slide rule menu,

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press the MAIN key until slide rule
appears at the E key.

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Press the E key and the
slide rule menu is displayed.

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Place the calibration standard with
the undamaged fastener to the left

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and the damaged fastener to the right.

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Place the probe over the good fastener

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and press and hold the null key.

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When the Nortec beeps,

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lift the probe straight into the air.

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Avoid tilting the probe.

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Place the probe over the
good fastener and press null.

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Lift the probe and place it

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over the damaged fastener
and press freeze.

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Once the screen is frozen,

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you can change the angle.

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Try to set the liftoff as
horizontally as possible.

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Use the knob to fine tune angle.

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To change from coarse to fine tuning,

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press the checkmark key.

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Press Gain three times
to change the V gain.

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Set the gain so that
the damaged signal

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reaches 90% of the screen height.

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Press Freeze and Full Next
to enter full screen mode.

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Place the probe over
the good fastener,

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and then the damaged fastener.

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Both fasteners should be
separated by height only.

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If the damaged fastener
is too far to the left,

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increase the frequency.

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If the damaged fastener
is too far to the right,

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decrease the frequency.

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Changing D Erase
and Persist settings

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can be useful for some applications.

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D Erase erases
the eddy current display

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at user-determined time intervals.

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Persist erases all information
at a particular point

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after the selected amount
of time has expired.

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To set the D Erase and
Persist time intervals

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press DISP twice,

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then use the A and B keys and knob

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to adjust the values.

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Alternate Method to
inspect Subsurface Cracks

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Another way to inspect
sub-surface cracks

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is to use a sliding probe.

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Set your frequency to 2.5kHz.

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Place the sliding probe on a defect
free area of the calibration standard.

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Press and hold the null key.

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This will activate
the auto lift off function.

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When you hear the beep,
lift the probe.

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Place the probe back on the
defect free area and press null.

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Slikde the probe to scan
an undamaged rivet.

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Press freeze.

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Using the angle key and knob,

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Adjust the signal so that
the starting and end points

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are both parallel.

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Press gain twice and use the knob

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to adjust the horizontal gain.

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The H gain signal should
cover 5 divisions.

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Press gain again and use the knob to
adjust the vertical gain.

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The V gain signal
should cover 3 divisions.

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Press freeze and full next.

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Place the probe on a defect free area
and press null.

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Scan the standard.

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If desired, adjust the alarm box

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for better separation between

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damaged and undamaged
fastener signals.

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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 surface
and sub-surface cracks.

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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.