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33

Comprehensive Operating Manual & Guide to Metal Detecting 

PRO-ARC 

22

PRO-ARC

Comprehensive Operating Manual & Guide to Metal Detecting

35

Static All Metal Mode (continued)

If the background chatter is too annoying, or the ground noise is so high that it impedes
operation, reduce sensitivity. Such a downward adjustment in sensitivity improves depth
detection as you can now hear weak signals better. 

The sensitivity system has two stages, 1-29 (low gain), and 30-99 (high gain). As you lower
sensitivity and cross the transition from 30 to 29 in Static Mode, it may be necessary to retune
by pulling the trigger switch momentarily. You may need to adjust to a setting of 29 or less to
silence electrical interference, or to prevent overload on highly mineralized ground or in salt
water.  You may also notice a shift in the ground balance setting over difficult ground
conditions as you cross this transition. 

GROUND BALANCE 
Always perform the ground balance procedure before searching in STAT Mode, using the
trigger or with the manual adjustment. 

If you do not ground balance before searching in STAT Mode, most ground will produce an
audible tone as you lower the searchcoil; the ground will “sound off.”  Some soils will not
sound off, but will remain quiet with a loss of sensitivity. 

DEPTH DISPLAY
To see a target's depth, in inches, pull the toggle switch. 

TARGET ID 
Move coil back-and-forth over target to see visual Target ID.

46

PinPoint Feature 

After a buried target has been located using the All Metal or Discrimination modes, you want
to pinpoint the exact location of the target in order to facilitate its recovery.  Accurate target
pinpointing will minimize digging. 

Activate the PinPoint feature by pulling the trigger switch located under the housing. Unlike the
motion All Metal and Discrimination modes, PinPoint does not require motion to detect metal.
PinPoint will detect objects while the coil is in motion and will continue to detect metal if
searchcoil motion stops over the target. 

Ground Pick-Up 
If you have not performed the ground balancing procedure, the PinPoint feature usually
causes the ground to sound off. This means that while pulling the pinpoint trigger, the audio
tone will get louder as you lower the searchcoil to the ground; this is called Ground Pick-Up.
Since you want to hear the target, rather than the ground, we recommend first Ground
Balancing in order to eliminate Ground Pick-up. Alternatively, if you experience Ground Pick-
Up, you may place the coil very close to the ground, off to the side of the target; then pull the
trigger, and raise the searchcoil slightly while passing it over the target. 

33

Comprehensive Operating Manual & Guide to Metal Detecting 

PRO-ARC 

22

PRO-ARC

Comprehensive Operating Manual & Guide to Metal Detecting

35

Static All Metal Mode (continued)

If the background chatter is too annoying, or the ground noise is so high that it impedes
operation, reduce sensitivity. Such a downward adjustment in sensitivity improves depth
detection as you can now hear weak signals better. 

The sensitivity system has two stages, 1-29 (low gain), and 30-99 (high gain). As you lower
sensitivity and cross the transition from 30 to 29 in Static Mode, it may be necessary to retune
by pulling the trigger switch momentarily. You may need to adjust to a setting of 29 or less to
silence electrical interference, or to prevent overload on highly mineralized ground or in salt
water.  You may also notice a shift in the ground balance setting over difficult ground
conditions as you cross this transition. 

GROUND BALANCE 
Always perform the ground balance procedure before searching in STAT Mode, using the
trigger or with the manual adjustment. 

If you do not ground balance before searching in STAT Mode, most ground will produce an
audible tone as you lower the searchcoil; the ground will “sound off.”  Some soils will not
sound off, but will remain quiet with a loss of sensitivity. 

DEPTH DISPLAY
To see a target's depth, in inches, pull the toggle switch. 

TARGET ID 
Move coil back-and-forth over target to see visual Target ID.

46

PinPoint Feature 

After a buried target has been located using the All Metal or Discrimination modes, you want
to pinpoint the exact location of the target in order to facilitate its recovery.  Accurate target
pinpointing will minimize digging. 

Activate the PinPoint feature by pulling the trigger switch located under the housing. Unlike the
motion All Metal and Discrimination modes, PinPoint does not require motion to detect metal.
PinPoint will detect objects while the coil is in motion and will continue to detect metal if
searchcoil motion stops over the target. 

Ground Pick-Up 
If you have not performed the ground balancing procedure, the PinPoint feature usually
causes the ground to sound off. This means that while pulling the pinpoint trigger, the audio
tone will get louder as you lower the searchcoil to the ground; this is called Ground Pick-Up.
Since you want to hear the target, rather than the ground, we recommend first Ground
Balancing in order to eliminate Ground Pick-up. Alternatively, if you experience Ground Pick-
Up, you may place the coil very close to the ground, off to the side of the target; then pull the
trigger, and raise the searchcoil slightly while passing it over the target. 

 

Summary of Contents for Pro-Arc

Page 1: ...Strap not shown Specially made to fit the arm cuff of your PRO ARC ARMSTRAP75 MPROARC Rev 2 051413 PRO ARC Comprehensive Operating Manual Guide to Metal Detecting FOR COMPLETE DETAILS VISIT WWW FISHE...

Page 2: ...n Static All Metal Motion All Metal Trigger actuated FASTGRAB ground balancing with manual override 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 3: ...earch Labs Inc 1465 H Henry Brennan Dr El Paso TX 79936 Phone 915 225 0333 ext 118 Fax 915 225 0336 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 4: ...entification 48 49 Probable Target Identification 49 50 Depth Indicators 50 Confidence Indicator 51 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 5: ...to determine the changes which occur as the search coil sweeps over the target and then convey the 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 6: ...minal 13 kHz quartz crystal timing reference 13158Hz 13100Hz 1043Hz 12987Hz 12931Hz 12876Hz 12821Hz 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 7: ...more highly weathered oxidized or finely grained the soil is the lower the numeric reading will be 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 8: ...m the soil itself or from lots of trash metal press the MENU button Sensitivity will be highlighted 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 9: ...ot quiet them all In that case you can revert to the rule of thumb don t dig non repeatable signals 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 10: ...e rods to your height 7 Push cable into connector on back of housing Do not twist the cable or plug 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 11: ...they are metal Ocean beaches have salt water that subject is discussed toward the end of the manual 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 12: ...ollar Locking Collar Velcro Strap Velcro Strap Cable Plug Middle Stem Lower Stem Assembly continued 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 13: ...there is nothing there There are five major causes for this electrical interference nuisance buried 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 14: ...alled with the positive terminals facing upward The LCD screen shows battery condition on the right 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 15: ...llow This technique works well in the All Metal modes and to a lesser extent in Discrimination Mode 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 16: ...e armrest in or out accordingly Adjust the armrest forward or back to adapt to your arm s length 16 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC PRO ARC Comprehensive Operating M...

Page 17: ...le back to dE process Press and Hold the MENU button to temporarily engage the dE process For users 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 18: ...kaline batteries which will typically last for more than 40 hours of use before needing replacement 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 19: ...gets can cause signal overload indicated by the siren sound In these instances raise WRONG RIGHT 62 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC PRO ARC Comprehensive Operating M...

Page 20: ...ion Trigger switch Settings Knob Menu Access Toggle From bP or CL Process DUAL FUNCTION MENU BUTTON 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 21: ...ent readings unless it is right next to an iron object A steel bottle cap that is at least 3 inches 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 22: ...not change when the SETTINGS knob is rotated press the MENU button to reactivate the user interface 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 23: ...away from any large masses of metal including the reinforcing steel usually present in concrete If 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 24: ...in the middle of the display and the present setting of that function will be displayed as a number 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 25: ...notable exceptions are gold which usually reads low because it is rarely found in large pieces and Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operating M...

Page 26: ...FASTGRAB will not automatically balance over highly conductive soils such as a wet salt water beach 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 27: ...ncy This is a trial and error method to try to find a frequency different from the suspected source 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 28: ...on the LCD indicates the type of ground mineralization Some typical ground mineralization types are 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 29: ...h overloads will not harm the detector but the detector will not detect metals properly under these 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 30: ...ESPONSE If the GB setting is too high a number the response of minerals will be positive This means 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 31: ...target identification it has assigned If all 6 segments are displayed you can be confident that the 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 32: ...e of electrical interference high ground mineralization or variable ground mineralization operation 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 33: ...ron objects 4 12 Foil from gum wrapper 16 25 U S nickel 5 coin Typically 30 Aluminum pull tab 33 55 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 34: ...slight amount of ground response If you do not hear these noises you will sacrifice detection depth 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 35: ...the target then pull the trigger and raise the searchcoil slightly while passing it over the target 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 36: ...there is no interaction between the sensitivity settings of the All Metal and Discrimination Modes 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 37: ...d the response characteristics of the Motion All Metal Mode are also modified these characteristics 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 38: ...Toggle Switch c Turn detector on while continuing to hold MENU and Toggle d Release Menu and Toggle 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 39: ...tone whose pitch varies in relation to the visual ID number the higher the ID the higher the pitch 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

Page 40: ...ing which values to include or exclude from detection Beware that this combination can be confusing 33 Comprehensive Operating Manual Guide to Metal Detecting PRO ARC 22 PRO ARC Comprehensive Operatin...

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