Whites BeachHunder ID Wartungshandbuch PDF herunterladen (Seite 4)

MIXED MODE. The D.C. SENSITIV-

ITY setting has a direct effect on V.C.O.

In pinpointing, when you hear that

pitch at its highest, you know you are

over the centre of a target.

Modulation - This control deter-

mines whether the motion mode gives

a strong signal on deep targets, or a soft

one. ON gives lower volume deep

responses; OFF supplies the same vol-

ume regardless of how deep the target

lies. When experiencing faint signals,

which could mean deep targets and

possibly older finds, this control may

be of help,

Autotrac - Automatically keeps the

ground balance setting adjusted while

you hunt. The importance of precise

ground balance cannot be over empha-

sised. The only time you would want to

turn this OFF is if you are over a lot of

rusting, man-made iron. Be aware that

TRAC INHIBIT affects AUTOTRAC.

Trac View - The word TRACK

appears on the display when AUTO-

TRAC adjusts the ground balance. Pre-

set to OFF, it should really be kept ON

to be certain that you have the correct

TRAC SPEED setting. When TRACK

appears often on the display, it could

also mean bad ground mineralisation.

Trac Speed - Determines how often

AUTOTRAC regulates the ground bal-

ance, by setting how much change in

mineralisation is needed to cause an

adjustment. Slower speeds equal great

change; faster speeds equal minor

change. Excessive tracking can cause

ground balance errors, and too little

does not keep up with changing

ground. When TRACK is seen appear-

ing every three to five coil sweeps, the

TRAC SPEED is correct.

Trac Offset - This feature is

intended to be used by experienced

searchers to track mineralisation either

of the extra negative or positive type.

Small metal targets such as gold

nuggets in heavy mineralisation would

benefit from a slightly positive setting,

while a slightly negative setting can

help reduce “hot rock” signals.

Trac Inhibit - Use OFF for

prospecting and ON for most other

detecting situations. It prevents Auto-

trac from tracking the ground while the

target is detected. ON reduces the

tracking to corrosion of most metals.

Since gold does not corrode, OFF is

automatic in the PROSPECTING Pro-

gram.

Coarse G.E.B. & Fine G.E.B. -

This is for manual ground balancing.

Those who opt for manual ground

balance over the exceptionally good

automatic ground balance already

know what they are doing. With 255

settings, COARSE is for large

adjustments, while FINE is for small

ones. There are times when manual

ground balance can be useful, but the

large majority of users will choose the

DFX’s automatic ground balance.

Disc. Edit - Permits setting each

V.D.I. Number to be accepted or

rejected by the discrimination with no

apparent loss of depth while using dis-

crimination. Be aware, though, that the

more V.D.I. numbers are rejected, the

greater the possibility of rejecting good

targets. The best advice is to keep dis-

crimination as low as possible, thus

accepting the widest range. V.D.I. num-

bers (Target ID) can be accepted or

rejected from -95 to +95. While +95 is

often associated with a “hot rock”, it is

best to dig if it indicates a deep target

on the display.

Block Edit - Allows the user to

change the accepting or rejecting of

larger groups of V.D.I. numbers by

dragging ACCEPT or REJECT, using

the ARROW controls.

Learn Accept/Reject - This feature

is useful when your program is all set

and working well, but you keep

encountering one specific type of trash.

Select LEARN REJECT and sweep the

coil over that junk until the signal dis-

appears. On the other hand, if you were

hunting for one specific item - say, a

lost earring - you could reject every-

thing, and then LEARN ACCEPT that

one signal by running the other earring

under the coil. Don’t forget to turn

LEARN off, or the detector will be

learning to reject or accept everything

the coil passes over.

Recovery Speed - This is the time

it takes your detector to recover from

the last target before it can respond to

the next. Faster speeds work best for

trashy areas. Use slower speeds for

cleaner areas and better discrimination.

The faster speeds are also good for sep-

arating closely spaced targets, but you

will reach a speed where depth and the

sounds of discrimination begin to suf-

fer. A speed just below this seems to

work the best.

Bottlecap Reject - Sets how well

the detector rejects iron. A higher num-

ber causes more broken sounds on iron

targets and thus makes them easier to

identify. Set it too high, though, and

good targets will start to sound bad

also, and iron next to a good target will

lose both. Start at preset and experi-

ment from there in the area being

hunted.

Hot Rock Reject - Determines the

responses to those rocks with a differ-

ent mineralisation than the surround-

ing soil. A +95 V.D.I. reading is often a

hot rock, but it can also be a deep good

target, as noted earlier. This control

allows a range of rejection or accep-

tance of this V.D.I. number. Instead of

just accepting or rejecting +95, one can

run a range from 0 to 20. Zero accepts

+95 while 20 rejects it. This control

provides many areas in between to help

give the hot rocks a different sound

than real targets. A negative hot rock is

also called a “cold rock”, and the

response will disappear in pinpoint. A

positive hot rock will continue to

respond in pinpoint mode. This control

could be invaluable in an area with sim-

ilar hot rocks.

Sweep Speed - If you need to move

quickly, a higher speed is indicated.

Conversely, if you need to slow down, a

slower coil movement is needed. Faster

speeds could be effective in a competi-

tion hunt or when you want to cover

ground where targets are fewer. High-

trash areas will cause you to slow

down, so a slower sweep speed is best

at those sites, or anywhere you need to

do a slow search. Sweep speed is more

important than the casual detectorist

would think, so a little more time has

to be spent here. Sweep Speed is

related to Recovery Speed and Ground

Filtering, and that relates to depth and

discrimination. Basically, a faster sweep

goes with faster Recovery speeds, and

vice versa. Some people like to swing

the coil fast, and some slow, never real-

ising that speed affects the depth and

discrimination ability of the detector. A

FIELD TEST

32 TREASURE HUNTING March 2002

Drop in rechargeable battery pack.

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