06
Adjust the IAR (Iron Amplitude Rejection) DISCRIMINATION from 0 to 5. It applies
only to targets that produce strong signals – typically shallow ferrous items. IAR
will not reject deeper targets which may come across as ferrous when they are
buried in mineralised ground, This is to ensure good targets are not rejected by
mistake.
Gold nuggets (buried deep in mineralised ground) generate a similar target
signature to a ferrous item. So in this case, it is better to reduce the level of discrimination.
DISCRIMINATION IAR
PROGRAMS 1 & 2 GOLD
Large masses in ground with little iron contamination.
General use.
Dicult soils contaminated with iron, hot rocks, etc.
1
2/2.5
3
In terms of pure performance, the greatest detection ranges are obtained with low reactivity levels.
However, you will nd more targets and will penetrate deeper in mineralised ground with
medium or high reactivity levels.
THRESHOLD
PROGRAMS 1 & 2 GOLD
Threshold is a faint background sound. Adjust the threshold from 0 to 20 with
Adjust The Reactivity from 1 to 3 with .
REACTIVITY
IRON VOL
THRESHOLD
MENU
DISC IAR
MENU
REACTIVITY
The Reactivity is a vital setting that determines the detector’s performance in terms of how quickly it
analyses the signal from detected targets, and its ability to separate the signals from several targets
located close together. This is also known as Recovery speed. If the soil contains a great deal of iron, hot
rocks or other mineralised debris, soil penetration is generally reduced.
The ORX
enables you to select a
high degree of reactivity which will help you speed up the analysis of signals. However if the ground is
"clean", it is better to reduce the Reactivity and sweep slower. The machine will be more sensitive to deep
masses and obtain better ground penetration.
The ORX
is a fast and selective detector !
Typical recommended Reactivity settings are as follows :
DISCRIMINATION
PROGRAMS 3 & 4 COIN
Adjust the discrimination level from 0 to 99 with .
Increasing the discrimination value enables you to gradually reject any target with a conductivity
level lower than the selected setting. Ex: if you set the discrimination level to 10, you will reject iron
with a value of between 0 and 10.
Dierent tones to help with target identication :
Dierent tones to help with target identication :
Coke
0 10 20 30 40 50 60 70 80 90 99
120 Hz 500 Hz 725 Hz
23
IRON TONE ( PITCH )
200 Hz
rd
TONE
nd
TONE
Bronze coins
Medium gold nuggets
Ferrous
Small gold
nuggets,
lead, foil...
Fine coins
Medium gold nuggets
Big gold nuggets
Silver coins
IRON TONE (120hz) 1000 Hz
PITCH
