7
Frequency Shift
(EMI Noise cancel): Auto Scan/Manual shift
Always start your session by performing an automatic noise cancel
SCAN
to find
the most stable channel in terms of electromagnetic interference (EMI).
Shortcut : from the main screen, long press the top right button.
The XTREM HUNTER is a highly sensitive device, so it is recommended to use it far
away from power lines or electrical environments. If you encounter excessive EMI
noise:
• Reduce the Sensitivity.
• Reduce the Reactivity.
• Reduce the Audio Response.
By increasing the Audio Response, you will affect the sound curve and amplify
deep targets, but it will make also the machine more jittery.
It is an important setting
of your XTREM HUNTER to control the response to the ground, so adjust it accord-
ing to your local conditions and experience.
Lowering the Audio Response to 1 reduces ground noise and provides a more
stable threshold.
Audio Response
MENU / GROUND
Auto Tune
AUTO TUNE
MENU
1
FREQ. SHIFT
AUDIO RESP.
The XTREM HUNTER operates by default in non-motion with manual threshold
adjustment by briefly pressing
.
The AUTOTUNE function allows for automatic threshold tracking to avoid manual
adjustment. The Threshold adjustment speed can be set across 3 levels to accom-
modate different threshold drift rates.
Keep in mind that when Autotune is active, if you hold the detector steady on a
target the signal will disappear after a few seconds depending your Autotune
adjustment. Therefore, it is necessary to keep the detector in motion.
In the same manner, if you are searching for very large targets at significant depths, a fast Autotune
setting may partially or totally adjust to the target and attenuate its signal, which can limit the perception
of the target’s position and shape. This can make it challenging also to track long metal pipes or conduits.
Remember that you can temporarily switch Autotune OFF to precisely locate a target in pure non-motion
mode at any time.
FREQ. SHIFT
MENU
3
AUDIO RESP.
SENSITIVITY
SCAN
AUDIO RESP.
MENU
2
SENSITIVITY
DISCRI IAR
Ground
GRAB
G.B.
87
Until now, detectors of this type have encountered problems with false signals
caused by inevitable height variations during walking. This always required signifi-
cantly lowering the Sensitivity to overcome these issues. Thanks to the FMF® tech-
nology, this phenomenon is reduced, resulting in a significant increase in perfor-
mance in various soil conditions.
Adjusting the ground effects settings is therefore less necessary, and the factory
default 87 level will work better in most cases.
In certain special magnetic ground conditions, you may experiment with a lower
ground balance adjustment manually or by grabbing.
If you encounter very difficult ground or high trash condition, always remember:
1.
To elevate the XTREM HUNTER from the ground using its adjustable handle or by directly holding the
aluminum frame to further distance it from the ground. This will maintain excellent performance and
significantly improves stability.
2. Reduce Sensitivity to 60-75 and Audio Response to 1.
