Whites-electronics Spectrum XLT User Manual download pdf (Page 37)

targets it cannot readily identify. Therefore, if

positive +95 is ACCEPTed, questionable targets

may be dug that indicate this number and can

produce some interesting recoveries. A good tip

regarding positive +95: If a target indicates 95,

and the depth display indicates it as being fairly

deep; dig it. If the depth display indicates it as

being fairly shallow, it is more likely to be trash or

a hot rock.

The first 30 to 40 negative numbers below zero also

impact detection depth. Most iron indicates further

into the negative numbers. Thus the first 30 to 40

negative numbers can often be ACCEPTed without

digging much iron. ACCEPTing from the positive

numbers down as low as minus 30 to 40 has the

largest impact on the lower end of the positive

numbers. Sensitivity to small jewelry is increased

however, sensitivity to foil is also increased. On a

beach or in a park that has lots of small foil,

ACCEPTing down to minus 30 to 40 may not be

practical. While ACCEPTing these minus numbers,

a reduced sensitivity setting may help eliminate

some of these small bits of unwanted foil.

ACCEPTINGing all V.D.I. numbers will produce

the best overall detection depth however, with the

amount of trash in most areas, searching with no

rejection is seldom practical. TONE I.D. and or

MIXED MODE are more practical choices. The

idea of discrimination is to ACCEPT V.D.I. num-

bers most likely to be valuables and to REJECT the

V.D.I. numbers most likely to be trash. Digging

ease, and acceptability in an area will also decide

the amount of ACCEPTed V.D.I. numbers desired.

No metal detector can reject all trash while accept-

ing all valuables. The deeper you want to detect, the

more trash you will need to accept and dig.

The detector sees metals electronically; thus some

valuable and non-valuable targets may look identi-

cal to the detector. To select ACCEPT and RE-

JECT V.D.I. numbers is to gamble that the areas

you select for ACCEPT will be good targets, and

the area you select for REJECT will be trash

targets. A factory program which uses the law of

averages usually produces more good targets than

trash. The EDIT feature allows you to fine-tune the

ACCEPT and REJECT settings for your area and

types of desired targets, further improving these

odds.

Chapter 5 XLT

Pro Options

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