Page 3-9
Spectra VX
3
User’s Guide
Filters
As presented in Chapter 1, modern VLF detectors use filters
to separate the target responses from the ground response. Fil-
ters are also used to minimize EMI noise. The best filter to use
depends on the strength of ground mineralization plus other fac-
tors.
VX
3
offers two filters to choose from: a 5Hz filter for low-
to-modest mineralization and 12.5Hz for more severe ground
conditions. Filters and response speeds are explained in detail in
Chapter 6.
