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One  of  the  following  may  happen  as  a  result  of  improper  ground  balancing:                                   

-The device gives a signal when the coil is swept over the ground where there is no target.             

-The device is silent but loses detection depth for certain metals.

-The device receives target-like signals next to holes and dips.
The above mentioned situations do not only occur as a result of improper ground balance 

adjustment. However, before looking into other reasons you must be sure that the ground 

balance is correctly adjusted. 
Ground balance value is common to all modes; changes will take effect in all modes. When 

using the automatic ground balance or ground tracking, this setting is adjusted 

automatically.
Ground balance can be done in three ways in FORS Tech: Automatic, Manual or Ground 

Tracking.

During automatic or manual ground balancing, when you press the ground balance 

button, no matter what mode you are using,  the device will unnoticeably revert to the 

General Search mode and the audible tones will be heard accordingly.

AUTOMATIC GROUND BALANCE:

Automatic ground balance is done the same way in all modes:
1. Find a spot on the ground where there is no metal.
2. Press and hold the ground balance button and pump the search coil up and down from 

about 15-20 cm (~6''- 8'') above the ground down to 3 cm (~1'') off the ground.
3. Continue until you hear the beep indicating that the ground balancing is completed. 

Based on ground conditions, it usually takes about 1-4 pumps for the ground balance to be 

completed.
4. Once the ground balance is done, the ground balance value will appear on the LCD 

panel as well as the numeric display on the handle. If you continue to press and hold the 

ground balance button, the device will keep on ground balancing and beeping. To make 

sure that the ground balance adjustment is correct, please repeat the process 2 or 3 times 

and each time check the value on the display. The difference between the values should 

not be greater than 1 or 2 numbers.
5. If you cannot ground balance, meaning you don't hear the beep, either the ground is 

very conductive or not mineralized or there must be a buried metal object underneath the 

coil. In such a case, move to another location and re-ground balance. If you still cannot 

succeed, try manual ground balancing.

90

Ground

Balance

Pump The Coil

90

90

FORS / Page 17

www.noktadetectors.com

NOKTA DETECTORS

GROUND BALANCE

Summary of Contents for Fors Tech

Page 1: ......

Page 2: ...USER MANUAL...

Page 3: ...fessional staff Seeking to create different kind of technology Nokta Detectors offers both high quality products and services to its consumers all around the world Nokta Detectors has been operating u...

Page 4: ...D TARGET ID and ID MASKING PINPOINT DEPTH INDICATION SWEEP SPEED and TARGET IDENTIFICATION LARGE or SHALLOW TARGETS FALSE SIGNALS and COMMON CAUSES MAGNETIC MINERALIZATION LEVEL HOT ROCKS AND SEARCHIN...

Page 5: ...ce indoors The device will constantly give target signals inside places like homes where there are many metals present Use the device outdoors in open fields Do not let another detector or an electrom...

Page 6: ...ttached Place the system box on the rail behind the armrest and push forward Then secure by tightening the nuts Attach the armrest strap by inserting it through the holes 1 System Box 2 Handle and S R...

Page 7: ...telescopic shaft 2 Place the shaft on the coil as shown in the picture 3 Secure by tightening the bolt and the wingnut Wrap the coil cable around the shaft all the way up as shown in the picture and a...

Page 8: ...you are standing in an upright position your arm is relaxed and the search coil is approximately 5cm 2 above the ground Wrong search coil angle Incorrect way of sweeping Wrong search coil angle Correc...

Page 9: ...y rechargeable Ni MH batteries Rechargeable batteries with higher mAh capacity ratings will provide longer run times Using batteries with minimum 2500mAh is recom mended LOW BATTERY The battery icon o...

Page 10: ...rove the performance of the device by activating this feature on suitable ground You can find more details about ground tracking on page 19 3 MENU AND SETTINGS SWITCHES These switches allow you to acc...

Page 11: ...he screen Please read pages 16 20 for more information on ground balance 5 PINPOINT SWITCH It is used to find the exact location of the target Pinpointing saves you digging time by narrowing down the...

Page 12: ...w all the information you need on the numeric display This way you don t need to go back and check the LCD panel constantly This provides great comfort during searching The numeric display backlight t...

Page 13: ...s set by the user in other modes For ideal settings and detailed information please refer to the SENSITIVITY and THRESHOLD settings page 21 Sensitivity level can be adjusted from 1 to 99 The most idea...

Page 14: ...increase or decrease the device s volume based on your preference and environmental conditions Volume level can be adjusted from 0 to 20 When you turn off and on the device it will start with the last...

Page 15: ...rget depth and sweep speed When you turn off and on the device it will start with the last vibration level you chose This setting is common to all modes changes will take effect in all modes The speed...

Page 16: ...tion in the menu the backlight will turn on and number 88 will appear on the numeric display This way the user can see the correct brightness level on screen and adjust it accordingly If you change th...

Page 17: ...e is silent when there is no metal present Discrimination modes have some common features but they have slight behavioral differences ID Masking is a common feature used frequently in these modes ID M...

Page 18: ...UCTIVE GROUND COG This is the special mode of FORS Tech designed for conductive ground wet beach sand alkali sand etc What is special about this mode is that it will not react to iron or similar targe...

Page 19: ...in all modes 1 Find a spot on the ground where there is no metal 2 Press and hold the ground balance button and pump the search coil up and down from about 15 20 cm 6 8 above the ground down to 3 cm...

Page 20: ...th some practice To ground balance manually 1 Find a spot on the ground where there is no metal 2 Select the General Search Mode Pump the search coil up and down from about 15 20 cm 6 8 above the grou...

Page 21: ...e setting It does not provide the user any kind of feedback such as the ground balance value or the beep sound in the auto ground balance When Ground Tracking is active the device may emit a loud audi...

Page 22: ...he ground balancing was successful On the contrary if the device receives noise as the search coil approaches the ground it means that the ground balance has failed In this case change your location a...

Page 23: ...opping sounds and false signals It is important to set the sensitivity setting to the highest level possible where no major popping sounds are heard For example if the noise level is suitable for sear...

Page 24: ...processing Therefore although it may detect very deep or small targets it may not be able to generate an ID In addition to the target ID there is a color scale at the top of the LCD panel which repres...

Page 25: ...crease it to the number you have determined Please keep in mind that certain metals other than the ones you are masking will also be lost or their signal strength will diminish resulting in loss of de...

Page 26: ...l as well as the numeric display on the handle see page 25 The signal tone increases in pitch and volume as the search coil approaches the target In the pinpoint mode the device does not discriminate...

Page 27: ...or down and always keep it parallel to the ground Shallow targets may give multiple responses to the device If you suspect a shallow target lift the search coil and sweep slowly until you get a singl...

Page 28: ...l give a typical metal sound again Negative hot rocks will not give any sound in these modes except for occasional false signals Therefore while searching in the field you can decide by listening to t...

Page 29: ...mode or set the ID Masking below 40 if you are searching for ferrous metals When the ground tracking is active the device may give a warning tone and ID when it passes over a hot rock because the eff...

Page 30: ...ssed for automatic ground balancing It does not indicate any issues or errors It just tells you what to do COIL NOT CONNECTED It indicates an interruption in the search coil transmitter signal The sea...

Page 31: ...device to emit different sounds during this process 6 Turn off and on the device again Go to the menu to check whether your desired startup settings are saved or not Changing the startup settings do n...

Page 32: ...width Motion multi derivative 4 General Discrimination 2 3 Conductive Ground 5 3 tones Auto and Manual Yes Yes Yes Yes 1 99 0 99 28 5x17 8 cm 11 2 x 7 0 waterproof DD 1 8 kg 3 9 lbs including batterie...

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