Gold Bug Pro Manual - Fisher

OPERATING IN DISCRIMINATION MODENotice that the segment status along the arc, and the discrimination parametersthey represent, vary as you adjust the discrimination level with + or -.For DISC values (at bottom right-hand corner of screen) up to 40:- Operation is tone discrimination only• No targets are eliminated from detection- Target IDs less than the DISC value induce a LOW tone• Represented by shaded segmentsAt DISC value = 41:- Target elimination begins•Targets in the blank segment region are not detected.- Target IDs less than the DISC value induce a LOW tone• Represented by shaded segmentsAt DISC values over 41:- Targets in the blank segment region are not detected.- The LOW tone range of targets progressively shrinks• Represented by shaded segments- Target IDs less than the DISC value induce a LOW tone• Represented by shaded segmentsAt DISC value = 80:- Targets in the blank segment region are not detected.- All detected targets induce V.C.O. tones.• Represented by solid segments- There are no LOW tones- No targets under 80 are detected.Here is an example of one possible setting:Suggestion:Try changing thesettings, watchthe screen, andpass objects overthe searchcoil ateach setting. Itwill quicklybecome obvioushow thesecontrols work.Values from 20 to 49will induce a LOW toneValues from 50 to 100will induce V.C.O. tones (see p. 25)Values lessthan 20 willNOT BEDETECTEDThis valueand higherwill induceV.C.O. tonesThis discrimination interface for the Gold Bug Pro was designed especially for relic-hunting.Relic hunters want control over what sizes of iron are detected, and also control overwhich targets are detected with a low-tone. Target values of 40 or less are ferrous.21