Whites V3 Manual de instrucciones Pagina 35
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Complete Owner’s Guide - Spectra 35
®
during use of the VCO (Voltage Controlled Oscillation) option. Threshold level is critical
in determining the dynamic range (change in sound from minimum to maximum) when
the VCO option is used.
• Target Tone – Adjust the tone, pitch, or audio frequency of a target “beep”. There is
sometimes an advantage to setting the target tone to a different level than the threshold
tone, making deep targetsmore eaily recognized.
• Overload Tone – Adjust the tone, pitch or audio frequency of the overload alert indication.
Select a unique level compared to all other tone selections. When the search coil is too near
a large metal, or the Sensitivity settings are set too high, the detection circuits become
saturated making further target detection impossible. The Spectra uses a special overload
tone to alert the operator. The search coil is either over a large metal (need to move to a
different spot) or Sensitivity settings are set too high. If it appears to be a large metal
(isolated area overloads), sweep the search coil higher off the ground, and note the
discrimination tone and display response. If the Spectra overloads over all ground in
the area, reduce Rx Gain and/or turn off Tx Boost and try searching the area again.
During an overload condition target detection is not possible. Test the Overload tone
during a search mode by positioning the loop against a large metal (like the side of a truck).
• Tone I.D. Mode – Provides different Tone ID options.
• Standard – Provides progressively higher pitch tones for targets with progressively
higher VDI numbers.
• Shifted – Allows choice of tone for targets less than “0” VDI and greater than “0” VDI.
• < 0 Select tone for targets with VDI indications less than 0.
• VDI = 0 – Select tone for targets with VDI numbers greater than 0.
• Custom – Allows a custom tone for each and every VDI number. This means
It is possible to assign similar tones for similar VDI ranges, or configure a
two, three, four, or five tone ID mode.
• Search Audio – Traditionally called MODES, Search Audio selects among a number of fundamentally
different performing search characteristics or attributes.
• Discrimination – Trash metal rejection search mode (Motion Discrimination) based
on Programs Accept or Reject settings or custom selections.
• Threshold – Selects between searching with the Threshold hum or without (silent search).
Hum is recommended (to be heard) continuously during use of any search mode. Most
individuals can more easily recognize target signals compared to ground or electrical
interference noises, when a continuous threshold is used.
Selecting no threshold is equivalent (the same as) adjusting Threshold to 0 in Live Controls,
Six Block Menu, or regular Threshold adjustment.
• Tone ID – Selecting Tone ID and pressing ENTER turns ON or OFF the Tone ID feature.
When ON, targets that indicate progressively higher toward +95 on the VDI scale “beep”
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