Sensitivity Adjustment - Velleman CS400 Manual Del Usuario

ALL-METAL Mode
Press the MODE button to enter the all-metal mode (non-motion mode by default).
In this mode, the metal detector emits a monotone sound when finding a target; the depth graph
indicates the relative signal strength. The stronger the signal, the louder the tone.
As the all-metal mode will detect all metal targets, the target identification function is useless. Please
make sure the metal detector is perfectly ground-balanced before using this mode.
NOTCH Mode
Press the MODE button to enter the notch mode.
Use the notch mode to selectively eliminate one or several metals from the categories. The DISC/NOTCH
range indication shows the current target discrimination level; the target indicator displays an object's
probable identification. The sensitivity graph displays the current sensitivity level; the depth graph
indicates the probable target depth.
To adjust the target notching range:
1. Press the ADJUST button to enter the setting mode. The LCD displays DISC/NOTCH in the bottom
right corner.
2. Press one of the arrows on the control panel. One of the target indicator arrows will blink.
3. Press the ENTER button to accept/reject a category.
4. Select the next notching level with one of the arrows and accept or reject it.
5. Do so for all the categories.
AUTO-NOTCH Mode
Press the MODE button to enter the auto-notch mode.
The auto-notch mode automatically rejects trash metals such as bottle caps, pull-tabs, tin foil... The
DISC/NOTCH range indication shows the current target discrimination level; the target indicator displays
an object's probable identification. The sensitivity graph displays the current sensitivity level; the depth
graph indicates the probable target depth.
9.5

Sensitivity Adjustment

1. Press the ADJUST button to enter the sensitivity setting mode.
2. Adjust the sensitivity level with the arrows.
The sensitivity level is not adjustable in all-metal mode.
Electromagnetic Interference (EMI)
Sensitivity level adjustment is useful to eliminate EMI.
This metal detector is an extremely sensitive device. The search coil creates its own magnetic field and
acts like an antenna. If your detector beeps erratically when the search coil is motionless, the unit is
probably detecting another magnetic field.
Common sources of EMI are electric power lines (both suspended and buried), engines, household
appliances like computers and ovens, some indoor electronic devices such as dimmers, etc.
Other metal detectors also produce their own electromagnetic fields. Keep metal detectors at least
6 meters apart if hunting with a fellow detectorist.
Severe Ground Conditions
A secondary use for sensitivity level adjustment is to reduce false detection signals caused by severe
ground conditions.
Although this metal detector has a specially designed circuit to reduce ground mineralization, the ground
conditions in field hunting cannot be anticipated. Highly magnetic soils in mountainous areas or highly
saline soils can cause the detector to emit tones even when metal objects are not present.
Reduce the sensitivity level if the detector emits false, non-repeatable signals.
Multiple Targets
If you suspect the presence of a deeper target beneath a shallower target, reduce the sensitivity level to
eliminate the detection of the deeper target. You will be able to locate the shallower target easier.
V. 02 – 15/07/2015
CS400
8 ©Velleman nv