10
10
where items fall out on
the control iron will be rejected at about the 8 or 9 o’clock setting.
Most pull-tabs will fall out at around the 2 or 3 o’clock position and screw caps are
eliminated at the fully clockwise position.
NOTCH SELECT & NOTCH WIDTH
Note: The notch function is disabled when the Discriminate Control is fully anti clockwise,
or the Notch Controls are fully anti clockwise.
The notch feature is capable of notching in or out the target. When the position of the Notch
Select is below the position of the Discriminate Control (but not fully anti clockwise) the
targets selected by the Notch setting will be notched in. If the position of the Notch Select is
above the position of the Discriminate Control, the targets selected by the Notch control are
notched out. As an example, set the Discriminate Control to reject foil. Now set the Notch
Select to reject Pull-Tabs. It is possible to set the Notch Width so that Pull-Tabs through to
Screw Caps are rejected. This approache works well for rejecting or accepting (ie picking up)
certain targets
or bands of targets. To turn off the notch feature, turn the Notch Select and
Notch Width both fully counter-clockwise.
NOTCH WIDTH
This control works in conjunction with the Notch Select. The Notch Width Control varies
the notch width from a notch of zero width up to about 30 degrees. As a starting point for
single targets, set the Notch Width Control to about 12 o’ clock position. Normally you will
not have to change this width setting. Some operators may require a Notch Width that is very
narrow or very wide. Turning the Notch Width Control counter-clockwise will narrow the
width. Do not turn too far otherwise the width will become to small and the notching feature
will cease to work. When the control is turned toward the 5 o’ clock position more than one
or perhaps a band of targets can be notched.
OVERDRIVE
Large Target Indication
Large targets or targets close to the search head can overdrive the instrument and produce
erroneous results. This could give the operator an incorrect audio and LED reading. If
overdrive should occur the audio will produce a “motor boat” sound and the Error LED will
light on the bar graph. Raise the search head to eliminate the overdrive and sweep the target
again.
PIN-POINT
Before you pin-point a target, hold the search head steady for about 1 second before you
press and hold the Pin-Point button. To accurately locate a target you can detune the
instrument over the target by releasing then pressing the Pin-Point Button. It is
very
important
to hold the search head still when detuning the instrument Failure to do so may
produce confusing audio responses.
