DetectorPro Headhunter Owner's Instruction Manual page 6

HEADHUNTER DIVER & WADER models have three
controls for the micro-encapsulated circuitry located in
one sealed earcup of the headphones. Batteries are found
in the other earcup and are user accessible.
The Discrimination (DISC) control has "stay-put"
segmented position adjustments. The Volume (VOL) and
Sensitivity (SENS) control adjustments are continuous and
not segmented.
Segmented controls allow the operator to make
adjustments without removing the headphones to view
the position numbers. Once discrimination points are
learned, the operator simply moves the control to the zero
stop position and counts the segment clicks to make the
desired adjustment. This only requires learning where the
three controls are located and the starting points of each
control. The control earcup should be worn on the side of
the head opposite the arm used to sweep the searchcoil
rod — thus giving a free hand to comfortably make
adjustments. The Sensitivity control can be adjusted
backwards from maximum ("10") to lessen the effects of
ground mineralization and small surface trash. Obviously
the Volume control is set to the user's preference and
does not require a secure position. The "stay-put"
segmentation of the Discrimination control is the most
user critical. Having this control accidentally lose
adjustment could possibly make you lose some valuable
targets if set too high. NOTE: Diver model has a
waterproof connector for changing to optional
searchcoils.
CONTROLS
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4 5 6
3
2
1
0
DISC
4 5 6
3
7
2 8
1
9
10
OFF
VOL
6
TM
7
8
9
10
4 5 6
3
7
2 8
1
9
0
10
SENS