Vco (Voltage Controlled Oscillator); Iron Grunt - Whites MX 7 Manual Del Propietário

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.
1. Use the + & - to select levels 0 = no SAT to 8 = Hyper SAT.
2. Use the SAT speed nearest "0" that maintains a steady continuous
threshold hum.
3. Quicker SAT speed settings, near to 8 (Hyper SAT), require quicker
search coil sweep speeds due to the fact that fast SAT can tune out met-
al target responses if swept too slowly.
4. 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 programs 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 Pinpoint mode and
other All Metal modes. However, VCO use is optional.

Iron Grunt

In the All Metal modes, when the MX 7 is sure the target is iron, the iron
grunt feature can speed detection by making obvious the metal is iron. Strong
IRON type responses are assigned a distinctive "GRUNT" sound.
To turn on Iron Grunt:
1. Assure you are in an all-metal program: All Metal, Relic, or Prospecting.
2. Press Options and select Iron Grunt with the up and down arrows. Use +
and - to select 1 = Iron Grunt, or 0 = OFF (no iron grunt).
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