Vco (Voltage Controlled Oscillator) - Whites MXSPORT User Manual

Although these slight changes in conditions can be heard in
the changing threshold hum, they are not significant enough
to dictate any operator change in settings. SAT automatically
maintains the threshold hum over time and irregular conditions
by resetting the threshold at regular (timed) intervals. These
timed intervals can be sped up or slowed to match how quickly
the ground conditions are changing and how quickly you want to
sweep the search coil.
To adjust SAT when All Metal, Relic, or Prospecting programs
are in use:
Press Options and use the arrows to select SAT. Use the + & - to
select levels 0 = no SAT to 6 = Hyper SAT. Use the SAT speed
nearest "0" that maintains a steady continuous threshold hum.
Quicker SAT speed settings, near to 6 (Hyper SAT), require
quicker search coil sweep speeds due to the fact that fast SAT
can tune out metal target responses if swept too slowly.
Select the slowest (lowest number) SAT speed that maintains
a steady threshold and no faster. Match the speed the search
coil is swept to the SAT speed. Practice with a target above the
ground to assure the search coil is being swept briskly enough to
respond to targets.

VCO (Voltage Controlled Oscillator)

VCO only influences the All Metal, Relic, Prospecting, and Pinpoint
programs, thus only appears in Options when one of these pro-
grams is activated. For the Pinpoint mode, lock in Pinpoint, then
press options and select VCO.
VCO provides an increase in the pitch of the beep as the search
coil nears a metal target. As the search coil moves away from
a metal target the pitch of the beep decreases. In this way the
center of the metal target is obviously the highest-pitched beep.
Most users find VCO is a helpful improvement to both the Pin-
point mode and other All Metal modes. However, VCO use is
optional.
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