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Controls Continued-
2. Auto Trac Toggle (on top right face of control box)
The Auto- TRAC Toggle selects the type of ground mineral rejection (ground balance) and automatic track-
ing to ground mineral changes best suited to the specific area. Three different positions, each for a specific ground
condition are provided.
The Trac Normal position (bottom position) is used for typical ground conditions. In this position the ST will
quickly compensate for ground minerals in a few pumps of the search coil over the ground being searched and
quickly & automatically track to any ground changes as you sweep the search coil during searching. For
most operators the Trac Normal position will be used for over 90% of searching conditions.
The Trac Salt position (top position) is used on salt water beaches. This tracking position will help to re-
duce the noisy effect of the salt content of the sand. In the process, however, it can reduce the sensitivity to small
pieces of gold jewelry. This is a compromise situation, so use it if you need to quiet beach operation. You may also
try to use the Trac Off position as described below if need be.
The Trac Off (center position) monitors but does not track to changing ground conditions. This position should
be used when the ground conditions create noise and instability. This can be due to decomposing iron. It is also
valuable when ground conditions change very rapidly and tracking cannot keep up with the changes. This condi-
tion is sometimes experienced by prospectors and beach hunters.
When deciding to use this Off position, put the toggle in the Normal position or if you are at a saltwater
beach, in the Salt position and find a quite ground area free of targets and pump the loop a few times to track
the ground and then move the toggle to the Off position. Since the tracking is Locked Off, you may from
time to time want to update the ground balance data held in memory by the Tracking software. To do
this, merely move the Auto Trac Toggle to the Normal or Salt position and then back to Trac Off/
Lock. This will restore the tracking point to the current ground mineralization.
NOTE- If you attempt to demonstrate the ST by waving a target in the air in front of
the search coil with NO ground present, you MUST set the "Auto Trac" Toggle to Off
position or the tracking system will attempt to track out the target. As it believes it is the
ground.
Sierra Super Trac Owner's Guide
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