Nokta detectors Velox One User Manual - Manual (Page 18)

SEARCHING AND METAL DETECTION
5cm
After the settings are adjusted, you can start searching by lifting the search
coil 5cm. above the ground and sweeping it right and left, keeping it parallel
to the ground.
The device operates on the principle of motion. This means that you must
move the search coil over the target or the target over the search coil, in order
for the device to see it. In other words, metal detection is not possible
without moving the search coil.
To avoid missing smaller and deeper targets, sweep the search coil both from right to left and left to right over each area you
are scanning, slightly overlapping the sweeps as you move forward.
When the device detects metal, it will produce an audible tone.
The device has 3 tone audio discrimination. The lower tone is for ferrous metals. For non-ferrous metals and gold, the device
produces 2 very similar high tones. In case of alloy detection the device may produce a high-low double-tone sound. In order
to get familiar with the different tones of your device, it is recommended that you practice with different types of metals and
identify the sounds before you use it out in the field.
NOTE: Discrimination, just like in any other metal detector, may not always be 100% accurate. There are many different factors
affecting discrimination accuracy. All metals based on their conductivity, shape, orientation underground, depth and ground
mineralization are sensed differently by a detector. Oxidized metals buried under ground for a long time such as tinplates and
tins may produce gold like signals.
Following the experienced metal detector users' rule of thumb "when in doubt, dig" is the right thing to do.
SEARCHING AND METAL DETECTION
17 NOKTA ENGINEERING