Filter & Speed - White's Spectra V3i Owner's Manual

Complete Guide to Spectra V3
Offset - <-100> - +100 – Slightly offsets perfect manual ground balance + or – to enhance specifi c
performance desires.
Soil Type – Select soil type to dictate appropriate ground tracking range and/or limits.
Normal – Typical ground without signifi cant conductive components.
Salt – Conductive (salt) ground types, wet saltwater beaches, heavily fertilized farm fi elds (silver/i
ron nitrates) when wet, alkali desert regions when wet.
FILTER & SPEED – Choose features that match the detector's circuitry to the conditions and personal
preferences.
Search – Selections active in the search mode, TRIGGER on grip in center position.
Ground Filter - Electronic fi ltering optimizes penetration / detection depth. Less fi ltering increase
detection depth in low ground mineral areas, however, doesn't penetrate high ground mineraliza-
tion well. Greater degrees of fi ltering increase detection depth in high ground mineralization, how
ever, doesn't penetrate low ground mineralization well. Spectra V3 offers eight combinations of
digital fi lters. Four different fi lter frequencies each with a signifi cantly different Band and a High
Pass version.
Filter speed HZ – defi nes the speed of the fi lter process.
Lower numbers – 5 Hz and 7.5 Hz allow the fi lter to process more signals at slower search coil
sweep speeds.
Higher Numbers – 10.0 Hz and 12.5 Hz, process signals at a faster rate allowing for faster search
coil sweep speeds.
Filter Types,
Band Pass- Typically superior for mild (low mineral) ground types and rejection of external
electrical noise / interference. Uses a narrow range of fi ltration.
High Pass – A faster fi lter with a broader range of acceptance.
Most Programs use a 10 Band Pass Filter allowing normal ground rejection at normal sweep speeds.
Selecting a fi lter other than 10 Hz Band Pass allows adaptation to personal search coil sweep speeds and
localized ground conditions.
5.0 Hz Band Pass
coil sweep speeds.
5.0 Hz High Pass
7.5 Hz Band Pass
7.5 Hz High Pass
10.0 Hz Band Pass
sweep speed.
10.0 Hz High Pass
12.5 Hz Band Pass
speeds.
12.5 Hz High Pass
Recovery Delay
the signal response time. Short response time benefi ts performance in high trash by providing
better target separation. A longer response time allows a larger window to detect deeper targets.
Ideal Recovery Delay is dependent on Ground Filter selection, ground mineralization, trash
density, and your average sweep speed (how quickly you move the search coil).
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– Better noise rejection, (Very low ground minerals), very slow search
- A little more sensitive in areas free of external electrical interference.
- Better noise rejection, (Low ground mineralization), slow sweep speed.
– A little more sensitive in areas free of external electrical interference.
– Better noise rejection, (Medium ground mineralization), medium
– A little more sensitive in areas free of external electrical interference.
- Better noise rejection, (High Ground Mineralization), fast sweep
– A little more sensitive in areas free of external electrical interference.
- 1 – 200 200 = slowest. Additional and separate (beyond fi ltration) selection for