Page 2 | The Minelab SD2100v2 |
5.2Operating Instructions
5.2.1Detector Sounds
Threshold: This is the background sound produced by the detector. The loudness of the background sound is set with the Threshold control. Set this so that you can just hear it. The pitch of the threshold sound can be set to your preference using the Tone control. The threshold tone of the SD2100v2 will not drop below the level set with the Threshold control.
Object signal: This is an abrupt change of the threshold tone, volume, and pitch. If the pitch drops first, then rises as the coil is passed over a target, this generally indicates a small target. If the pitch rises first then falls as the coil is passed over a target, this generally indicates a large target.
Ground noise: These irregular noises are difficult or impossible to pinpoint when moving the coil over the ground. They are caused by changing chemistry or ‘mineralisation’ of the ground. Ground noise can be minimised by the correct setting of ground balance controls (see section 5.2.6 Ground Balancing).
5.2.2Turning on the SD2100v2
Hold the coil away from the ground and any metal objects and switch the Power switch to “On”.
5.2.3Set the Threshold Control
The Threshold control should be set so that the background tone is barely audible. Small surface objects, as well as large deep objects, will produce very small changes in the threshold tone. It is important to set the Threshold control correctly to ensure that these targets are heard. Minelab suggests that you experiment with known targets to assist in setting the Threshold and other controls to suit your hearing.
5.2.4Set the Tone Control
Carefully adjust the Tone control until the background threshold tone is at a comfortable pitch for your hearing. Note that interpretation of the detection signals involves understanding the difference between the rising and falling pitch of the threshold tone. Take time to experiment with known targets. Generally, high pitch tones are more fatiguing but better for identifying the faintest signals.
