Fisher CZ-7a PRO Quicksilver Operating Manual page 5

ABOUT YOUR DETECTOR
12. Depth: Patented Fourier Domain Signal
Analysis. Two deep-seeking, ground -
compensating VLF signals (one at 5 kHz and one
at 15 kHz) provide twice as much target
information for accurate analysis and
identification.
13. Faint-Target Audio Boost: The lower range of
the volume control of the CZ-7a Pro is like any
other that you've used. But as you increase the
volume above mid range, strong target sounds
remain at a fixed volume while faint, deep-target
sounds continue to get louder.
14. Big-Target Alert: Ordinary detector circuits
overload on large, shallow targets, identifying
them as good targets. But not the CZ-7a Pro. A
distinctive belt tone immediately warns you that
the target signal is too strong to identify.
15. Wet Sand Operation: Just press the NORM/
SALT touch pad, reset the ground control and you
can search wet salt-sand like nobody's business.
In fact, you can submerge the coil for shallow
saltwater beachcombing.
16. Splashproof, Rainproof, Dustproof: The control
housing is sealed and the battery compartments
have their own gaskets. The search coil is
submersible. The cable connector and
headphone jack (when the phone plug is
inserted) are splashproof. The CZ-7a Pro is not
submersible, but rain and dust are no problem,
and the speaker is splashproof.
17. Drop-In Batteries: No wires, no clip, no hassle.
Just drop in two 9volt transistor batteries.
18. Constant Battery Monitor: You always know
the condition of your CZ-7a Pro batteries. Three
bars on the Liquid Crystal Display indicate fully
charged batteries. Two bars means they're about
half gone, and one bar means it's time to replace
them.
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