C-SCOPE METADEC2 Provozní pokyny stáhnout pdf (Strana 10)

In practice

the

operator concentrates on careful sweeping

of

the search head in large arcs, keeping the

search head near

to

the

ground and level. When a signal

is

received, the operator can then take the

search

Iclead

away

from

the influence

of

the

object,

hold

it

steady at

the

operating height,

carefully

retune the

detector

and then

carefully

re-scan across

the

object

to

analyse and

pinpoint

the

object.

With

practice,

this

procedure becomes

automatic,

and various combinations

of

audio and meter

discriminate can be

used

to

fully

analyse

doubtful

objects.

If

in

doubt

dig.

E.

ADC

ANALYTICAL

METHOD

OF

OPERATION

The

METADEC

II

is

really

two

detectors in one.

1. A

totally

programmed detector

or

2. A

full

manual analytical

ADC

detector.

The programmed method

of

operation

as

described

on

P.

6. (C)

is

the recommended

method

of

operation, because

it

ensures a high level

of

performance,

but

there are, however, sites and users

requiring

full

manual

control

of

both

ground exclusion and discrimination.

The

METADEC

II

is therefore designed

to

operate

as

an

Analytical

ADC

detector.

There

is

a

Ground

Exclude -

ALL

Metal Mode

which

is

selected on

the

meter console

by

depressing

the

ADC

Ground

push

button

(viI. .

There

is

also a Discriminate Mode

which

is

selected

by

depressing the

ADC

Discriminate push

button

(vii).

Usually

the

Ground

Mode (vi)

is

used

for

general searching, and the Discriminate Mode

is

used

for

analysing a target object once

it

has

been located.

Alternatively

the

detector

can be used

in

either

mode exclusively.

The

ADC

method

relies on

the

Ground

and Discriminate switches (vi) and (vii), and these

will

not

operate

if

the

AUDIO

or

METER

DISCRIMINATION

switches (iii)

or

(iv) are

in

the

ON

position.

When these are

ON,

the switches (vi) and (vii) are overriden and become solely retune buttons.

ADC

Method

Tuning

Tune the

detector

as

described in

Tuning

P.6.

Ground

Exclude

Set the

Ground

Exclude

(Z)

as

described on P.7.

or

Engage the Pre-Set

Ground

(i)

as

described on P.7.

Discrimination

Select the appropriate mode at the

Function

Switch

(S)

- i.e. IN

LAND

site

or

BEACH

site, and select a level

of

Discriminate at

the

Function

Switch.

Dl

No

Discrimihate -

to

average

discrimination

All

metal

to

iron

reject and small

foil.

D2 Average

Discrimination

-

to

Sevp.re

Discrimination.

Iron

and small

foil

- Large

iron,

large

foil

and pull tabs.

Each D mode can be raised

by

adjusting the Discriminatel level

of

the Discriminate

Control

(TI.

i.e.

Dl

Discriminate

0 -

No

Discrimination.

Dl

Discriminate 10 - Iron and silver

foil

Discrimination.

D2

Discriminate 0 - As

D1

- Discriminate 10.

D2 Discriminate 10 -

Iron,

silver

foil

and

pull

tab Discrimination.

WARNINGI

If

the

detector

is

set

to

D2 - Discriminate 10

as

well

as

rejecting

pull

tabs, some copper

nickel coins and gold rings etc.

will

be rejected

at

these severe settings. Copper and solid silver

or

gold

will

be detected though. Generally,

only

set the

detector

to

D2

-

lOon

sites where the incidence

of

pull

tabs makes detecting impossible otherwise.

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