White’s Electronics Spectra V3 - Manual (Page 10)

10 Complete Owner’s Guide - Spectra
®
• Optional Step (Analyze) Push the toggle forward (away from the grip) sweep over the target
several times, and look at the analysis. The Analyze Screen provides a visual of the actual target sig-
nal. The Screen provides an indication of the size of the target (distance between the two black lines),
and the differences at each frequency. Each of the three frequencies are color coded (22.5 kHz, 7.5
kHz, 2.5 kHz).
Most metal alloys produce a set of smooth bumps similar to a single camel hump, slightly different in height
(signal strength) at each primary frequency. Coins on edge or irregular shapes often produce dips before and/or af-
ter this hump. “Size” will track search coil sweep speed. Different metal alloys respond at different frequencies. As
well, irregularities (dips in normal pattern) at specific frequencies better identifies trash, particularly iron. The sizing
rule is shown on the lower left side of display. This size applies to each increment marked with dots across the bot-
tom of the screen. The default shows two inches as the display width. This would indicate that the data shown from
the left to right edge of the display was collected within a time interval where the loop moved two inches. Accuracy
depends on search coil sweep speed, and consistency.
Next to the large VDI number is a calculation displayed as a percentage (%). 100% is sure target infor-
mation, and 10% should be considered questionable. If the information is questionable, note the depth. If it is a
deeper target (5+ inches) questionable display information is typical and one may still want to dig.
Pinpoint -
• To Pinpoint exactly where to dig, squeeze and hold the toggle in (towards the grip) and slowly “X” the area
where the “BEEP” was heard. Standard Equipment “DD” loop requires special attention to side to side, then forward
to back. Pivot 90 degrees and repeat “X” area. Display indicates depth in inches and bars indicates target center.
The strongest signal will be the exact center of the target.
NOTE: With multi frequency pinpoint bar option, strongest bar suggest likely target alloy. Nickel, gold, and
small targets strongest at 22.5 kHz (top bar), brass strongest at 7.5 kHz (center bar), silver/copper strongest at 2.5
kHz (bottom bar).
The Spectra can be locked into the pinpoint mode, while squeezing the trigger, press and hold ENTER
and release the trigger, then release ENTER. Pinpoint mode will then remain until trigger is squeezed and released
twice. Note, it is normal for the pinpoint mode threshold to gradually wander up or down over relatively short peri-
ods of time. Pinpoint is not intended for prolonged searching.