White's TDI BeachHunter Скачать руководство пользователя

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detectors due to the overwhelming number of EMI sources. If

you cannot minimize noise with the Frequency control, then

turning down the Gain or Threshold is your best bet. Excessive

chatter will easily mask targets, plus results in audio fatigue. It

is better to trade off sensitivity for smooth audio so you can hear

the targets.

Содержание TDI BeachHunter

Страница 1: ...Owner s Manual TDI BeachHunter White s Electronics Inc Sweet Home Oregon USA Building the World s Finest metal detectors for over 60 years...

Страница 2: ...ulse Induction 7 Controls Threshold 9 Power gain 9 Pulse Delay 10 Target Conductivity 11 Ground Balance 12 Frequency 13 TDI In Depth Ground Balancing 14 Audio 14 Pulse Delay 17 Dual field coil 18 Deal...

Страница 3: ...d so that stainless steel spring clip buttons line up and lock into one of the adjustment holes in the rod Turn cam lock to secure The second or third adjustment holes are suitable for average sized a...

Страница 4: ...pads Carefully align pads on the inside of the elbow cup one on each side of the center rod and press firmly into place 7 Adjust the elbow cup strap so that it is loose enough for you to slide your ar...

Страница 5: ...d plugged into a wall socket simply drop the NiMH pack into the cradle An LED indicates the status of the charge cycle when the LED turns off the charge cycle is complete and the charger will automati...

Страница 6: ...ground hum 6 With the coil on the ground no motion increase the Gain until the audio begins to chatter Back off slightly for a reasonably smooth threshold 7 Optional adjust the Frequency offset to mi...

Страница 7: ...al discriminator in PI detectors although there is some ability to discern certain types of metals The decay response varies with target conductivity plus other characteris tics so that low conductive...

Страница 8: ...con ductive such as small nuggets jewelry and small iron Target conductivities above the ground balance point produce a nega tive response for which TDI assigns a low tone These targets are generally...

Страница 9: ...search to prevent audio fatigue If you choose to do this increase the threshold to the point where you can hear the threshold tone then slowly back off until it is barely inaudible Reducing the thresh...

Страница 10: ...y Regardless of conductivity the response is strongest at low sample delays and weaker at higher delays However targets of low conductivity or that are thin will decay faster than highly conductive or...

Страница 11: ...are usually high but where the tran sition occurs depends on the composition of the gold alloy Be mindful that searching in low conductivity mode could eliminate very large nuggets if any happen to be...

Страница 12: ...say 5 then pump the coil and increase the GB until the high tone begins to transition to a low tone If the Pulse Delay control is changed you will probably need to re adjust the Ground Balance setting...

Страница 13: ...ctors be ing used nearby This interference is recognized by a warbling or repetitive pulsing of the audio threshold and can mask target signals If you are experiencing interference adjust the Frequenc...

Страница 14: ...pend on conductivity which gives TDI some ability to discriminate In rare cases a target might fall so close to the GB point that it gives either no response at all or a double tone response Because g...

Страница 15: ...lancing e g non mineralized beaches and Ground Balance may be turned off In this mode the audio response is high for all targets Setting the threshold at an ideal level is essential for opti mum resul...

Страница 16: ...produce a nice clean sweep of a signal whereas junk tends to produce a broken or warbly sound with more variation at the end of the tone But remember that every signal you left undug could be a good...

Страница 17: ...can be markedly reduced and weaker targets completely eliminated However Gain can be increased to counter this though the net result is still likely to be less sensitivity than an optimally adjusted t...

Страница 18: ...il such as a saltwater surf zone behaves like a low conductor target and will respond regardless of the Ground Balance setting Increasing the Pulse Delay to about 15 s will eliminate wet salt response...

Страница 19: ...t Round coils tend to have a coni cal pattern of sensitivity as illustrated below As such coverage at maximum depth is less than the size of the coil so it is always recommended that successive sweeps...

Страница 20: ...rs have wideband receivers they are more prone to noise and interference than narrowband VLF designs There are a few strategies for dealing with noise First TDI has a Frequency Offset control that sli...

Страница 21: ...u cannot minimize noise with the Frequency control then turning down the Gain or Threshold is your best bet Excessive chatter will easily mask targets plus results in audio fatigue It is better to tra...

Страница 22: ...12 Dual Field aftermarket coils available Weight 5 lbs 12 DF coil Length 43 48 inches adjustable Batteries 8 AA NiMH alkaline Battery life 5 6 hours typical2 Warranty 2 years transferrable Waterproof...

Страница 23: ...d out and returned to the factory address by your dealer soon after origi nal purchase for the purpose of recording this information and keeping you up to date regarding White s ongoing research devel...

Страница 24: ...and all trash and litter found 5 Whenever possible return identifiable property to its rightful owner 6 Never destroy historical or archaeological treasures 7 Appreciate and protect natural resources...