White’s Electronics Classic 5 ID - Manual (Page 10)

Classic® 5 ID
10
Discrimination Control
The DISC (discrimination) control selects the amount of
rejection against trash metals. At the fully counter-
clockwise position it has the minimum amount of
discrimination against trash metals. Most common
metals are detected at this setting except for small iron
and small stainless steel. As the DISC knob is turned
clockwise, more and more trash rejection is achieved.
The Sensitivity knob turns the instrument ON and
OFF and adjusts the responsiveness of the instrument.
As the SENS knob is turned further and further
clockwise, detection
depth as well as sensi-
tivity to physically
small metal items
increases. Unfortu-
nately, external electri-
cal interference and
ground interference
also increases. The best
setting is the furthest
clockwise position that
provides smooth, stable
and predictable results.
An operator of the Classic 5 ID may want to adjust
the SENS knob for several reasons:
I. Minimum sensitivity is needed for detecting near
power lines, electric fences, microwave antennas, etc.
II. For good results in most conditions the “P”
(Preset) position works well.
III. If the “P” (Preset) position works well (smooth,
stable and predictable results) increasing the SENS
knob clockwise will increase detection depth so long
as the ground is not extremely mineralized.
IV. If the display tends to black out with all the
display blocks filling in, the sensitivity may need to
be reduced for good display performance in that area.
ON/OFF Sensitivity/Gain
VIII. The eighth block indication from the left:
“SILVER, 50¢, 1 DOLLAR’
The most common metals found with this block
indication is large silver coins. However, other large
items of silver can also be indicated by this block. We
recommend digging this indication.
IX. As previously stated, multiple blocks could have
one of two meanings. There could be more than one
metal or it may be one metal of a complex alloy
(mixture of different metal types). Squeeze the ALL
METAL toggle and see if you can pinpoint and isolate
the metals and then re-sweep the center of each
separately for a better I.D.
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