Whites DXF Instrukcja Użytkownika Pobierz pdf (Strona 42)

Chapter 5 DFX

™

Pro Options

19. Hot Rock Reject

(Discrimination section)

Tips -

Hot Rocks are often

described or categorized

as either negative/magnetic

(cold rock) or positive/con-

ductive (hot rock). Typically

a negative or magnetic

“cold rock” will respond in

the search mode, how-

ever, once the trigger is

squeezed for pinpointing it

ceases to respond. A posi-

tive or conductive “hot rock”

will continue to respond

during pinpointing.

If hot rocks are a problem

in the area being searched,

in most cases a HOT

ROCK REJECT setting can

be found that will minimize

their target like responses

compared to real metal

target responses in the +95

category. Settings from

1 - 20 are available.

Hot rocks (rocks higher or different in mineraliza-

tion than the surrounding ground) respond as +95

on the V.D.I. scale. Unfortunately in some ground

conditions very deep, small, or unusual real metal

targets may also indicate +95. In the past an opera-

tor would either accept +95 with the DISC EDIT

feature and hear hot rocks as a target response

“beep”, or reject +95 and not hear a target like re-

sponse from + 95 target types.

The HOT ROCK REJECT features allows a com-

promise between total rejection or total acceptance

of the + 95 V.D.I. indication. Disc Edit Accept or

Reject of +95 will only control the visual displaying

of +95 with the Visual Discrimination feature ON.

To reject or accept +95 with the audio discrimina-

tion, Audio DISC must be on, and the HOT ROCK

REJECT feature adjusted for your preference-re-

garding +95.

A HOT ROCK REJECT range of 0 to 20 is pro-

vided. At 0 the same characteristics can be expected

as EDIT ACCEPT +95 has provided with past

Whiteʼs models. At 20 the same characteristics can

be expected as EDIT REJECT +95 provided with

past Whiteʼs models.

At 10 a compromise between accepting +95 and

rejecting +95 is achieved. A hot rock may or may

not produce a target like response depending upon

many factors such as the actual size of the hot rock,

degree of difference between the hot rockʼs miner-

alization and the surrounding ground, the current

ground balance setting, and the Sensitivity/Gain

settings.

Hot Rock Reject provides for 19 shades of gray be-

tween totally accepting all hot rocks (0), and totally

rejecting all hot rocks (20).

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