Fisher Labs CZ-21 QuickSilver Operating Manual page 28

TARGET IDENTIFICATION
a feel for which target classifications will be the most
productive.
13. Look for repeatable signals and don't waste time
on disappearing or one-way signals. If you hear a
good beep but can't repeat it when you go back
over the target area, or if it beeps in only one sweep
direction, it's probably a piece of trash - something
below your discrimination setting.
14. If you're in a relatively non-trashy area, try searching
in the Autotune mode and then identifying your
targets by switching to DISC = "0." You'll find more
and deeper targets this way. And you'll eliminate
almost all false signals. If you're having any difficulty
pinpointing or identifying a target in the I.D. mode,
don't waste any more time. Push the pinpoint button
for quick pinpointing, then release it for accurate
I.D.
15. If your target disappears when you go into the Pinpoint
mode, you've probably tuned it out by pressing the
button too close to the target or over another piece
of metal. Try again, this time tapping the PINPOINT
button over another piece of ground.
16. Don't waste a lot of time digging holes for targets
you can't find. If your hole keeps getting deeper
and wider, cover it up and go on. You may be over
a buried pipe or some other large deep target.
26