Ака Signum 7272M MFT version 1.00 [14/34] Discrimination search mode and setup

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Селективный металлодетектор «Сигнум MFT» 7272М. Руководство по эксплуатации.

adaptation procedure one more time (see Search coil Replacement). In this case the

processor of your detector will choose the optimum frequency of the excitation current for

the current temperature conditions.

In saltwater beach operations and other complicated soils with high conductivity we

recommend you use the "Economy Mode" option for better ground balance accuracy.

Sometimes decreasing sensitivity will allow for a more accurate ground balance especially on

beaches.

In rare cases, such as after replacement of the coil or attempting to balance on a

metal object, a situation may arise when you cannot perform an automatic ground balance.

This occurs because the current value of the phase vector moves out of the locked

system acquisition sheet (such as a significant change in ambient temperature).

You can solve the problem by balancing in manual mode. To do this, while

in the automatic balancing press the t o g o t o t he

manual mode and using the buttons and get the vector of the

ground signal moving from left to right in strictly the horizontal direction. After that, the

balancing procedure will operate normally.

DISCRIMINATION SEARCH MODE AND SETUP

Discrimination is the ability of the device to respond to certain types of objects

and ignore the others. For example, you can configure the appliance so that it will

respond only to objects of non-ferrous metals while ignoring everything else. In some

cases, this allows you to increase the comfort of the search. Be aware, however, that the

more discrimination that is used there is an increased risk in missing valuable objects. In

any event, the choice is yours.

The discrimination range is set to the position and width of the search sector.

The metal detector will respond only to those

objects that

have travel time curves (Hodographs) which fall between

the left and Right border sector. For example, to search for

non-ferrous objects your sector search screen may

look like that in Fig. 9

Pressing Button allows the user to

fig.9 quickly switch between modes “All Metal” and

“Discrimination” and then back again.

The sector on the screen indicates that you are in a discriminatory setup. An

Audio response will occur only on those objects that fall in the clear Hodograph area while

targets that fall within the hatched area will not generate an audio response.