White Spectra VX3 Manuál s instrukcemi stáhnout pdf (Strana 61)

Page 5-8

Spectra VX

User’s Guide

Mixed response

Sometimes you will see response bars that include both

green and red:

This simply means that the target is on the edge of the rejec-

tion/acceptance point. Because each bar is 7 VDI points wide a

target that is accepted can still show some red in the response

bar.

In the above graph, notice that the 22.5k and 7.5k frequen-

cies are nicely aligned, and the 2.5k response is both slightly

skewed and broader. This generally indicates that the 2.5k

response is less reliable, as it had trouble “locking” to a particu-

lar VDI.

Wrap-around

Occasionally targets will “wrap around” between +95 and -

95. This can be due to a high conductive target (a silver dollar,

we hope) getting shifted upward by mineralization. Or, on the

down side, it could be due to a “cold rock,” a mineralized rock

that is below the ground balance point. Again, paying attention

to how other targets are behaving

will give you a strong clue as

to which of these is more likely.

Status Bar

The final part of the screen to discuss is the Status Bar. To

the left is a group of icons which depict (1) the trigger switch

mode, (2) wireless headphone status, and (3) backlight status.

4. Are dimes and quarters tending to read high? This could be due

to mineralization.

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White Spectra VX3 Manuál s instrukcemi Strana 61