Separate Gain And Threshold Controls; Touchpad Controls; Computerized Ground Balancing; Pinpoint - Teknetics Omega 8500 Owner's Manual

OPERATION and CONTROLS (continued)
The gain setting factors the amplitude of the signal coming from the coil. The

Separate Gain and Threshold controls

threshold setting sets the minimum signal strength required to get a
response, and audibly, the "hum" level in All Metal Mode. Together, these two
settings control the overall sensitivity of the machine.
TOUCHP D CONTROLS:
This allows you to set the detector's internal ground setting equal to the phase
GND GR B: Ground Grab
of the ground you are searching.
See the section on Ground Balancing (page 19), for a more throughout
explanation of this feature.
Press-and-hold
the ground value.
In order to determine the most accurate ground value, pump the coil up and down
over the ground while standing in one place over a patch of ground-free of metal.
1. Locate a patch of metal free soil.
2. Start with the searchcoil about 6" above the ground. Press and hold
lower and raise the coil to within an inch of the ground in a pumping motion.
3. Continue this pumping motion and watch the Ground Phase number in the
center of the display.
4. Once this number remains constant, the detector has correctly measured
the Ground Phase.
5. Release the
displayed.
To manually adjust the ground setting, see the "GROUND" menu item on page
16. If while performing Ground Grab, one of the arrows in the GROUND
ERROR window is flashing, see the "Ground Grab Offset" section on page 17.
Press and hold

PINPOINT

searchcoil over a metal target will induce sound. Audio is VCO The 2 digit
number displayed indicates target depth, in inches. The scale is calibrated to
coin-sized objects.
After you have identified a target using a motion mode of detection, press and
hold to identify the target's exact location. This technique can yield more
information about the target's shape and size and also find its exact location to
facilitate extraction.
1. Position the searchcoil just barely off the ground, and to the side of the target.
PINPOINT S FOLLOWS
2. Press and hold
3. Move the searchcoil slowly across the target and locate it by sound.
The target is located directly below where the sound is the loudest.

Computerized Ground Balancing.

®
to invoke automatic ground balancing. This will "grab"
. This will internally set the Ground Phase to the value
to activate. Searchcoil motion is not required; a motionless
:
,
13