Operating Instructions - Fundamentals; Operating The Eureka Gold - Minelab Eureka Gold Instruction Manual

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8. Operating Instructions – Fundamentals
The Eureka Gold is a motion detector and must be moving over a target to
be able to detect it. If the coil is held still for a few seconds, any signals due
to ground or targets will die away. The Eureka Gold is designed to be
sensitive to a large range of targets while also having the ability to
discriminate between ferrous and non-ferrous targets.
When in use, the detector should have the Threshold control set so that
there is a soft but audible signal at all times. Any variation in this signal as
the coil is moved over ground can indicate the presence of a metallic
target. It could also, however, be due to sudden large variations in soil
conditions for which the automatic ground balance cannot compensate
quickly enough. Such differences can be learned through experience.
8.1

Operating the Eureka Gold

a) Remove the components from the carton and assemble the detector.
b) Ensure the battery is fully charged.
c) Turn the Eureka Gold On using the Volume control. To extend the battery
life, avoid leaving the detector On unnecessarily.
d) Adjust the Threshold control until the audio signal is just audible when
the coil is held motionless. It must be audible, as small targets might not
produce enough signal to make any sound if the background sound is
too quiet. However, if the threshold hum is too loud, small variations
might also be missed because they are too small compared with the
background sound.
e) Once the initial turn-on noises have subsided, turn the Sensitivity
control to maximum then rest the coil on the ground. Once again, after
a few seconds, the noises due to the movement will die down. If there
are any residual noises, they will be due to electrical interference with
the detector. You will need to slighly decrease the Sensitivity control
until the interference noises are stable. Reduction of sensitivity
reduces the ability to detect targets, so the sensitivity should be
reduced as little as possible.
The Minelab Eureka Gold