Instruction manual
13
Another place where a negative Threshold could come in handy is on wet sand at a saltwater
beach. Here, black pebbles of basalt act as little hot rocks. They can sound o like pieces of
foil and can be very annoying. Having a negative Threshold helps him in this situation. But
understand that doing so can result in missing small gold targets (e.g. jewelry chains) and the
signals produced by deeper targets may not be heard.
One nal note on Threshold... the pitch of the Threshold tone is not adjustable in the Coin &
Treasure Mode. You can, however, adjust the pitch of the Threshold for use in the Prospecting
Mode of the X-TERRA 70 and 705.
As a side note, I do not consider the X-TERRA audio produced by small/deep targets to be
a “whisper” signal. There may be signals that are “narrower” than others. But I believe the
“whisper” signal that we may have heard on analog detectors is dierent than the “narrow”
signals that are produced by digital audio in X-TERRAs.
Maybe I’m just old school, but it is my theory that these narrow signals are simply a result of the
detection eld being narrower at extreme depths. Whisper? Narrow? Maybe it is just a matter
of semantics. But, regardless of whether you call them “whisper” signals or simply understand
the signal strength lessens as depth is increased, know that shallow targets can produce a more
pronounced audio signal than a target of the same size, at extreme depths.
Understanding your X-TERRA - Getting Started