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Chapter 4 XLT

®

Basic Adjustments

7. A.C. Sensitivity

Used to select the appropriate sensitivity (degree
that the instrument is responsive to signals) while
being used in the discriminate modes (those which
require movement of the loop).

Select A.C. SENSITIVITY with the ARROW
controls, and press ENTER. Use the ARROW
controls to set the level of sensitivity shown by the
number on the right. Press ENTER.

Sensitivity levels adjust detection depth and also
have a direct effect on detector stability. A.C.
SENSITIVITY levels should be selected carefully
to allow stable, predictable performance. Set a
lower level if the detector behaves erratically.

64

A.C. SENSITIVITY

MIN

MAX

Tip - Preset levels work
well for most conditions.
Reduced levels will
improve stability in difficult
conditions. Increased
levels will improve
detection depth if stability
can be maintained.

Tip-Remember that once
the TRIGGER is
squeezed and released to
go to a search mode, you
can return to the last
adjustment screen used
by pressing either
ARROW control.

8. D.C. Sensitivity

Used to select the sensitivity (degree that the detector
is responsive to signals) while the detector is being
used in non-discriminate modes. These are modes that
do not require movement of the loop to respond. D.C.
SENSITIVITY fine tunes stability and pinpointing.

Select D.C. SENSITIVITY with the ARROW
controls, and press ENTER. Use ARROW controls to
select the desired D.C. SENSITIVITY level shown by
the number on the right. Press ENTER. D.C.
SENSITIVITY levels should be selected carefully to
allow smooth, stable and predictable operation while
allowing for reasonable pinpointing.

A.C. and D.C. Sensitivity Adjustments are
traditionally the way to alter detection depth and
stability. There are other methods available in the
PRO OPTIONS under SIGNAL (TRANSMIT,
RECEIVE), PREAMP GAIN.

30

D.C. SENSITIVITY

MIN

MAX

Tip - Typically, lower
D.C. SENSITIVITY
settings pinpoint shallow
targets far better than
high settings. High
settings will however,
produce more pinpointing
(as well as non-
discriminate mode
depth). Pinpointing
(TRIGGER squeezed),
MIXED-MODE, and
V.C.O. AUDIO are
dramatically impacted by
the D.C. SENSITIVITY
setting.

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Summary of Contents for XLT

Page 1: ... V C O 29 5 Absolute Value 30 6 Modulation 30 G E B Trac 30 7 AutoTrac 31 8 Trac View 31 9 Trac Speed 32 10 Trac Offset 33 11 Trac Inhibit 33 12 Coarse G E B 34 13 Fine G E B 35 Discrimination 36 14 Disc Edit 36 15 Block Edit 38 16 17 Learn Accept Reject 39 18 Recovery Speed 40 19 Bottlecap Reject 41 Display 42 20 Visual Disc 42 21 Icons 42 22 V D I Sensitivity 43 23 D C Phase 44 24 Accumulate 45 ...

Page 2: ...TT CHECK USE TO SCROLL CURRENT SETTINGS OR MAKE ADJUSTMENTS GROUND BALANCE ONLY WHILE SEARCHING HOLD THE TRIGGER AND PRESS BATTERY CHECK WHILE SEARCHING HOLD THE TRIGGER AND PRESS REVERSE DISPLAY WHILE SEARCHING HOLD THE TRIGGER AND PRESS PRESS FOR LIGHT DARK BACKGROUND RELEASE TRIGGER BACKLIGHT IN SEARCH MODE HOLD THE TRIGGER AND PRESS RELEASE TRIGGER PUSH AIR GND BALANCE IN SEARCH MODE PRESS TO ...

Page 3: ...om shipping carton and check the assembly page to make sure all parts are present 2 There are rubber washers between clevis lower rod and loop ears Use only nonmetallic washers fiber bolt and thumbnut to secure loop search coil to clevis lower rod 3 Unlock S rod camlock and insert clevis lower rod into curved S rod so that stainless steel spring clip buttons line up and lock into one of the adjust...

Page 4: ...ling down on the front of each of the two latches on the bottom of the control box releasing the catch and hinging open the door The non rechargeable battery holder can use many different types of batteries including rechargeable This holder is designed for standard size penlight AA batteries which should be 50 mm 10mm Battery lengths shorter than this will likely cause problems with this power su...

Page 5: ...h the QUICK charge setting will damage the system CAUTION Battery 802 5211 Using the Standard Battery Holder 1 Slide open the battery holder lid decal side of battery holder by applying gentle upward pressure on the tab of the door so that it unlocks Slide the door away from the battery box exposing the cell positions 2 Remove any old cells from the holder Note the and positions of each cell and t...

Page 6: ...f the battery s current condition However before charging with the QUICK charger setting determine battery condition by inserting battery into the instrument and turning the instrument ON If the instrument will not turn ON or if voltage tests eight volts or below charge five hours with the QUICK charge If the battery voltage tests any other voltage refer to the Charging Hours chart above for prope...

Page 7: ...hen the battery reaches eight volts Like a personal computer there are times such as low battery conditions when the microprocessor of a metal detector becomes out of sequence with the rest of the circuitry This is often noted by pecu liarities in the non discrimination or pinpointing TRIGGER squeezed modes Symptoms may be blaring or silent non discriminate or pinpoint modes depth indication inacc...

Page 8: ...appears asking you to lower the search coil loop to the ground Press ENTER Ground mineral ization will be balanced out BEEP The last screen will be the live search screen You will hear the THRESHOLD hum Sweep the search coil over the ground and listen for a solid repeatable consistent beep then look at the display The icons tells what likely coin lies below V D I number chart on top of control box...

Page 9: ...loop is passed over metal that is likely trash the sound will be inconsistent Trash targets typi cally produce a shorter sputter type sound that is often broken or double in nature Place a steel pop bottlecap on the ground Pass the loop over it several times to become familiar with this sound at different loop sweep speeds Note that an aluminum twist off bottlecap cannot be used as it is a differ ...

Page 10: ...8 95 95 0 A Sweep the loop over the target several times and look at the SignaGraph The SignaGraph automatically clears itself FADE RATE so that it doesn t fill the screen with information from past loop sweeps An operator has limited time to look at the SignaGraph If you want to look at the information again sweep the loop over the target several more times The fading of the SignaGraph informatio...

Page 11: ...e silver jewelry Penny or a dime If the screw cap and penny ICON are displayed the target can be an Indian Head or zinc penny Dollar Large non iron can also produce this indication large brass jar lids IRON REJECT targets will produce only a SpectraGraph if VISUAL DISC is ON IRON 95 ACCEPTED or VISUAL DISC OFF IRON 18 ACCEPTED or VISUAL DISC OFF Foil Possible ring 10 ACCEPTED or VISUAL DISC OFF Pu...

Page 12: ... This loop s strongest traits are in the detection depth and ground coverage areas If pinpointing becomes difficult or critical an optional smaller loop is suggested The smaller loops have advantages in high trash areas and pinpointing but will not detect as deep as the standard 9 5 inch size 10 5 1 2 9 6 3 0 1 2 9 6 3 0 DEPTH SCREEN DISPLAYED WHEN THE TRIGGER IS SQUEEZED SQUEEZE TRIGGER Advanced ...

Page 13: ... settings discriminates rejects most common junk items like nails foil pull tabs and hot rocks and responds to most coins and large jewelry Use in lawns parks and play grounds where lots of trash rejection is desired Coin Jewelry less discrimination less trash rejection desirable because of the high degree of variance found in jewelry alloys More digging required Good program for lawns parks and p...

Page 14: ...ENTER again changes back to the original setting 56 TARGET VOLUME MIN MAX 56 TARGET VOLUME MIN MAX press ENTER press ENTER RECTANGLE AROUND THE TITLE MOVES TO THE SETTING USE ARROW KEYS TO ADJUST THE SETTING UP OR DOWN ADJUSTMENT EXAMPLE TIP To quickly increase to maximum hold ENTER and press ARROW up To quickly decrease to minimum hold the ENTER and press ARROW down SILENT SEARCH ON OFF TO CHANGE...

Page 15: ...h as a competition hunt program can use this ARROW RETURN feature to allow quick easy access to the most used feature Transmit Frequency Use that feature adjustment screen last just prior to squeezing and releasing the TRIGGER for search ing Then during searching press either ARROW to return directly to that adjustment screen Hot Key Shortcuts HOT KEYS will save time as they allow easy access from...

Page 16: ...the battery removed Custom Pro grams can be changed at any time by saving new settings over a previously saved custom program Chapter 4 XLT Basic Adjustments 1 SQUEEZE TRIGGER 2 PROGRAMS PG 1 3 COINS COIN JEWELRY JEWELRY BEACH PRESS ENTER FOR PRESET PROGRAMS MAIN MENU PG 1 1 PRESET PROGRAMS BASIC ADJUSTMENTS PRO OPTIONS PROGRAMS PG 2 3 RELIC PROSPECTING CUSTOM PROGRAM 1 SCROLL DOWN WITH ARROW KEYS...

Page 17: ...o longer want to keep it you can replace it with a new program using the same procedure as de scribed above The old program can only be erased when a new program is stored in that position 8 You can NAME a custom program and at a later date replace the program while maintaining the same name Develop the changes first to any pro gram then use the SAVE method which maintains the old name while stori...

Page 18: ... searching 56 TARGET VOLUME MIN MAX Tip Select the loudest comfortable level lower with headphones higher without 23 AUDIO THRESHOLD MIN MAX 2 Audio Threshold The slight hum or background tone which is nor mally heard continuously during searching Select THRESHOLD with the ARROW controls and press ENTER The current threshold level will sound continuously The number designating the current level is...

Page 19: ...E levels low numbers If you have trouble hearing low fre quencies select high TONE levels high num bers 4 Audio Disc The ability of the detector to reject trash by producing different sounds for different types of targets Trash is rejected by going silent or producing a broken cut short sound Valuables are detected by a smoother more solid sound Select AUDIO DISC with the ARROW controls use the EN...

Page 20: ...ile using SILENT SEARCH It is not possible to achieve a non motion searching mode with SILENT SEARCH ON When SILENT SEARCH is ON the all metal pinpointing mode continues to produce a threshold This may not be noticed as once the pinpoint mode detunes for better target center locating the threshold is not present However releasing re squeezing and holding the TRIGGER with the loop at waist level a ...

Page 21: ... pitched beeps are directly determined by the discrimi nation settings An operator can select discrimi nate settings through the selection of an entire Program or by adjusting the accept and reject V D I numbers in the Pro Options under Discrimination EDIT All Metal Channel When the loop is not in motion or moved slowly all types of targets will produce the same low pitch beep All metal channel wi...

Page 22: ...ent screen used by pressing either ARROW control 8 D C Sensitivity Used to select the sensitivity degree that the detector is responsive to signals while the detector is being used in non discriminate modes These are modes that do not require movement of the loop to respond D C SENSITIVITY fine tunes stability and pinpointing Select D C SENSITIVITY with the ARROW controls and press ENTER Use ARROW...

Page 23: ...LIGHT If in the dark you cannot see the display to turn the BACKLIGHT on holding the TRIGGER and pressing MENU will bring up the BACKLIGHT adjustment screen Release the TRIGGER and press ARROW up to select a level you can see the display Squeeze and release the TRIGGER to continue 0 BACKLIGHT MIN MAX Tip Use only when needed and only as bright as needed for acceptable display visibility Backlight ...

Page 24: ...e Programs You may need to use the EMERGENCY VIEW ING ANGLE PROCEDURE to see the display Select the program you desire use the ENTER control to enter Air Ground Balance then again use the EMERGENCY VIEWING ANGLE PROCEDURE if the display is unreadable VIEWING ANGLE is preset at average levels in the factory preset programs The display may be unreadable at either of the extreme settings in a particu...

Page 25: ...SC EDIT Change V D I target reference numbers accepted detected or rejected status 15 BLOCK EDIT Speeds EDIT by dragging ACCEPT or REJECT with ARROW controls 16 LEARN ACCEPT Target samples can be used to show or teach ACCEPT discrimination 17 LEARN REJECT Target samples can be used to show or teach REJECT discrimination 18 RECOVERY SPEED Speeds target responses so close together targets each respo...

Page 26: ...ategories will only reappear if MENU is again pressed or at specific times during scrolling to offer short cuts From this point forward we will assume that you know how to use the MENU control the Arrow Controls to make a selection the ENTER control to enter or select that option the Arrow Controls to make adjustments and the MENU to exit Remem ber squeezing and releasing the trigger returns to a ...

Page 27: ...target center OFF When OFF the signal will remain original size giving some indication of its size and shape Manual shrinking is completed by squeezing and releasing the TRIGGER several times as the loop is passed over the target Manual shrinking can completely eliminate the target If the target no longer responds after manual shrinking move the loop away from the target squeeze and release the TR...

Page 28: ...n requirement to modes which are ordinarily non motion It is also known to produce some variations in the responses to hot rocks rocks more mineralized than the surround ing ground which change with different speed selections Only enough S A T SPEED required to maintain stability is recommended Typically normal coin searching requires slower lower number speeds beach hunting and relic hunting requ...

Page 29: ... FREQUENCY settings will add slight variations to these tones TONE I D ON OFF TO CHANGE PRESS ENTER Tips Great for coin jewelry and relic search ing Can be used in combination with MIXED MODE 4 V C O Voltage Controlled Oscillator produces a higher pitched tone the stronger the target becomes Voltage Controlled Oscillator is a feature that will only work in the non discriminate modes When it is ON ...

Page 30: ...iminate or motion modes When ON it allows the depth of the target to dictate the volume of the response Thus deep targets can be easily recognized by their lower volume sound If OFF the discriminate or motion modes will produce the same volume of response on all detected targets regardless of depth The use of MODULATION allows for the singling out of deep targets in the standard discriminate mode ...

Page 31: ...rac View When ON TRACK appears on right side of display when AUTO TRAC makes adjustments to the Ground Balance setting TRAC VIEW offers a way to observe Autotracking When ON TRACK will appear momentarily on the right hand side of the display just above the SignaGraph while AUTO TRAC is adjusting This information is valuable when attempting to determine an appropriate Trac Speed It may also be a va...

Page 32: ...enough tracking can result in the ground balance setting never catching up with changing ground TRAC VIEW is used to see how much tracking is occur ring Generally a faster higher number TRAC SPEED is needed for more consistent ground conditions Slower TRAC SPEEDS lower num bers is needed for more inconsistent ground conditions TRACK appearing every three to five sweeps of the loop is the ideal set...

Page 33: ... by a loss or slight decrease in the thresh old as the loop approaches the ground in the all metal mode 0 AUTO TRAC OFFSET MIN MAX Tips Recommended only for experienced operators who fully understand ground rejection G E B Trac section 11 Trac Inhibit Prevents AUTO TRAC from tracking the ground during target detection TRAC INHIBIT ON prevents the AUTO TRAC feature from altering Ground Balance duri...

Page 34: ... manual setting the Automatic Air Ground sequence must be avoided by squeezing and releasing the TRIGGER when and if the Air Balance instruction appears Air Balance instructions may appear during Basic Adjust ment or Pro Options selections following the manual adjustment When manually adjusting the Ground Balance it is necessary to make an adjustment in COARSE and or FINE then squeeze and release ...

Page 35: ... conditions high mineralization may be described as either magnetic negative or low numbers or conductive positive or high numbers COARSE and FINE settings of 0 represent a ground rejection similar to a V D I number of 95 COARSE and FINE settings of 255 represent a ground rejection level similar to a V D I number of 10 This V D I range from 95 to 10 represents the ground rejec tion range of this i...

Page 36: ... Each time a factory Preset Program is ENTERed all unsaved settings are over written by the factory recommended settings Only the Custom Programs will save your custom settings through Preset Program selections Accepting certain V D I numbers will have an impact on detection depth particularly for very deep targets that are difficult for the display to identify Positive 95 is one of these V D I nu...

Page 37: ...iminate some of these small bits of unwanted foil ACCEPTINGing all V D I numbers will produce the best overall detection depth however with the amount of trash in most areas searching with no rejection is seldom practical TONE I D and or MIXED MODE are more practical choices The idea of discrimination is to ACCEPT V D I num bers most likely to be valuables and to REJECT the V D I numbers most like...

Page 38: ...umber range When a V D I number or range of numbers appear that you want set differently stop dragging with the ARROWs press ENTER to change the ACCEPT REJECT status and then drag that new status as far as you desire ENTER changes ACCEPT REJECT ARROWS drag that ACCEPT REJECT status ENTER again changes ACCEPT REJECT ARROWS drag that new ACCEPT REJECT status etc BLOCK EDIT not only saves time if lar...

Page 39: ...r reject then use LEARN ACCEPT to accept only that specific target If using a standard program and a specific unwanted trash target is being detected use the LEARN REJECT to change the pro gram to reject it If you do not return to the LEARN selection screen and turn LEARN OFF the detector will continue to learn AC CEPT or REJECT every metal target it encounters Selecting LEARN OFF after you have l...

Page 40: ...y will have better responses on very deep targets Slower speeds also have more definitive discrimination sounds A custom setting needs to be found that suits the preferences of the individual and the conditions in the area As a general rule the closer together the metal targets are in an area the faster the recovery speed should be The more spacing between tar gets the slower the speed should be D...

Page 41: ...etting is if an iron target is close to a good metal the high degree of bias against iron may cause the detector to cancel both responses Another disad vantage is that all targets iron and non iron tend to start sounding more broken at high levels of BOTTLECAP REJECT The operator needs to fine tune BOTTLECAP REJECT according to their preferences and the conditions being searched Some ground condit...

Page 42: ... from appearing on the display The disadvantage is that much of the visual display information will not appear for you to interpret questionable target responses VISUAL DISC ON OFF TO CHANGE PRESS ENTER Display section Tips Typically you re not interested in the RE JECTed target information Eliminating it from appear ing reduces or cleans up the display information you must interpret ON is recomme...

Page 43: ...tector will become unstable and the display indications unreliable Low ground mineralization is typically a good indication that high V D I sensitivity settings are appropriate Heavy mineralization or electrical interference are conditions where a lower V D I Sensitivity setting is appropriate This feature is designed to allow adjustment of the display stability However because the instrument s di...

Page 44: ...e loop in a number of ways by bending reflecting absorbing and thus altering the phase and amplitude the detector measures This in turn produces inconsis tencies in the relationships of these features D C PHASE ON OFF TO CHANGE PRESS ENTER Display section Tips In specific ground conditions certain Basic Adjustments and Pro Options may produce better performance By measuring the ground and taking n...

Page 45: ...necessarily allow showing of all the available information on the SignaGraph It averages the information received and shows this average on the SignaGraph When used in combi nation with ACCUMULATE it has more informa tion to average which results in more accurate indications of trends FADE is suggested to clear the display of old information rather than excessive TRIGGERing Tips Most beneficial wh...

Page 46: ...fade at all The SignaGraph information will continue to appear until the trigger is squeezed and released A maxi mum setting of 14 selects a very quick fade rate The SignaGraph information will automatically clear from the graph quickly Ideally a Fade Rate should be selected that allows time to adequately view the SignaGraph information yet still clear the graph in a timely manner Tips Recommended...

Page 47: ...large strong metal targets present or the ground mineralization is such that the detector cannot properly operate Sweeping the loop higher above the specific OVERLOAD response will identify a target When OVERLOAD appears on the display consistently due to ground minerals selection of TRANSMIT BOOST OFF will improve depth and stability During OVER LOAD the detector is not capable of responding to m...

Page 48: ...fre quency will cause interference By shifting to a different frequency such interference can be avoided from detectors operating nearby The best performance will be achieved at the standard number 4 setting If however you cannot search due to interference from other detec tors use an alternate frequency Remember that once the trigger is squeezed and released to return to a search mode the last op...

Page 49: ...ea where maximum PREAMP GAIN can be used Electrical interference may make it difficult to receive an Air Balance at high PREAMP GAIN settings Selections such as MIXED MODE or AUDIO DISC OFF may not allow as high a PREAMP GAIN level as other selections This is normal as some of these modes naturally see more targets and ground and they may still provide superior perfor mance and depth even with the...

Page 50: ...5 0 25 OFF 7 OFF OFF OFF ON ON OFF 14 1 ON AUTO AUTO 95 30 29 95 NA NA NA Same Edit OFF OFF 20 1 ON OFF 85 OFF ON ON 7 ON 4 2 AUDIO G E B TRAC DISCRIMINATION DISPLAY SIGNAL COIN COIN JEWELRY RELIC PROSPECT JEWELRY BEACH 56 23 231 ON OFF OFF 64 30 0 25 ON 5 OFF OFF OFF ON ON OFF 8 0 ON AUTO AUTO 95 9 10 27 28 49 50 94 95 Same Edit OFF OFF 20 4 ON ON 80 OFF ON ON 7 ON 4 2 56 23 231 ON OFF OFF 64 30 ...

Page 51: ...SOLUTE VALUE MODULATION AUTO TRAC TRAC VIEW AUTO TRAC SPEED AUTO TRAC OFFSET TRAC INHIBIT COARSE G E B FINE G E B DISC EDIT Reject Accept Reject Accept Reject BLOCK EDIT LEARN ACCEPT LEARN REJECT RECOVERY SPEED BOTTLECAP REJECT VISUAL DISC ICONS V D I SENSITIVITY D C PHASE GRAPH AVERAGING GRAPH ACCUMUL FADE RATE TRANSMIT BOOST TRANSMIT FREQ PREAMP GAIN AUDIO G E B TRAC DISCRIMINATION DISPLAY SIGNA...

Page 52: ...gets Hot Rock A rock which contains a higher concentration of mineralization than the surrounding ground Matrix Refers to the total volume average of ground penetrated by a metal detector Menu Series of listings and prompts on a visual display designed to aid the operator in feature selection Metal Metallic substances iron foil nickel aluminum gold brass copper silver etc Microprocessor An electro...

Page 53: ..._____________________________________________ ________________________________________________________________ Instrument Serial Number __________________________________________ Date Code ______________________________________________________ Original Purchase Date _____________________________________________ New Owner Name __________________________________________________________ Address _____...

Page 54: ...keeping you up to date regarding White s ongoing research development The warranty does not cover damage caused by accident misuse neglect alterations modifications unauthorized service or prolonged exposure to corrosive compounds including salt Duration of any implied warranty e g merchantability and fitness for a particular purpose shall not be longer than the stated warranty Neither the manufac...

Page 55: ...by quality service Our Factory Authorized Service Centers are factory trained and equipped They offer the same quality service as the factory Service before and after the sale is the cornerstone of our customer relations A Contact your Dealer There may be a quick simple fix or explanation that will prevent having to send the detector in for service B Double check the obvious such as batteries and ...

Page 56: ...56 Notes Notes Notes Notes Notes Notes ...

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