White’s Electronics Prizm 6T Owner's Manual page 13

Prizm™ 6T
(voltage controlled oscillator) which aids in both pinpointing and
separating metals near each other. VCO varies the audio pitch with
target strength, pitch increases as the search coil nears the center of
the target. Release P/P automatically returns to the search mode.
Areas of difficult ground mineral may be easier to search in All Metal
mode, watching the display ID for DISC.
4. DISC (discrimination) selects the audio acceptance or rejection of
the nine categories of targets on the display. A reject setting is indi-
cated on the display as a speaker in a circle with a slash through it
directly under each category selected for rejection. To locate jewelry,
(except iron) accept as many categories as you can endure digging.
Pressing upper circling arrow portion of DISC button to cycle through
the available DISC categories/settings. Once at a category press lower
portion of DISC button (with speaker icons) to change that category to
either accept or reject. Continue pressing the circling arrow section to
continue to the next category. Custom settings will hold through ON/
OFF, so long as a good battery remains installed. Battery removal
reverts to initial factory settings.
Prizm™ 6T Search Display
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