Whites DXF User Manual download pdf (Page 9)

Chapter 3 DFX

™

Quick Start

Search Fundamentals

The loop/search coil must be in motion (sweep-

ing from side-to-side) for this instrument to

respond to metal.

Practice a smooth sweep of

the loop from side-to-side keeping the loop close

to the ground throughout the swing.

Each pass of

the loop should take approximately two seconds

from right to left, two seconds to return from left

to right.

Walk forward slowly. Take small steps no greater

than half normal strides. Make sure each pass of

the loop overlaps the last by at least half the length

of the loop. Do not lift the loop at the end of each

swing. Keep it close to the ground at all times.

To become comfortable with sweeping the loop

takes some practice. Try to loosen up and ﬁ nd a

comfortable grip on the handle. Premature fatigue

may result from gripping the handle too tightly, im-

properly adjusted rod or elbow support, and limited

body movement. Hold the handle loosely. Adjust

the rod and elbow support for comfort and keep the

elbow strap loose. Use your arm, shoulder and even

your back a little to allow a smooth even sweep of

the loop.

Now that you're sweeping the loop smoothly over

the ground, you will notice that the detector starts

making sounds

(beeps)

Not all sounds are good

targets; some trash targets also make the detec-

tor

beep.

As the loop is swept over the ground, ignore the

display and concentrate on the sounds the detector

makes.

As the loop is passed over metal that is likely trash,

the sound will be inconsistent. Trash targets typi-

cally produce a shorter, sputter-type sound, that

is often broken or double in nature. Place a steel-

pop bottlecap on the ground. Pass the loop over it

several times to become familiar with this sound at

different loop sweep speeds. Note that an aluminum

twist-off bottlecap

cannot

be used as it is a different

type of target. Also note that very old rusty bottle

caps may start reading as quarters due to the elimi-

nation of the iron alloy through deterioration. Once

familiar with the sound typical bottle caps produce,

an operator may pass over such targets and continue

searching without consulting the display informa-

tion, saving more time for evaluating possible good

targets.

As the loop passes over metal that is likely a good

target, a more consistent and smooth sound will be

heard. A good target typically produces a longer,

more solid sound. Place a quarter on the ground

and sweep the loop over it several times to become

familiar with the sound of a good target.

Why Air/Ground Balance?

When the display prompts you to AIR BALANCE

by holding the loop at waist level and press EN-

TER. The DFX

™

's circuits are being prepared for

ground balancing by measuring temperature and

other variables that affect electronic circuits. The

DFX

™

"beeps" and you lower the search coil to the

distance above the ground that you will be search-

ing. Press ENTER to have the DFX

™

"cancel/track

out" or GROUND BALANCE the ground miner-

alization. The DFX

™

then automatically "tracks

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 59 60

Comments to this Manuals

No comments

Whites DXF User Manual Page 9

Comments to this Manuals

Related products and manuals for Measuring, testing & control Whites DXF