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1.2.5 Data Correctness
Data errors can occur if:
• the power supply of the device or the batteries are too low,
• the cables are too long,
• the unit is operating to close to devices which sends out disturbances or
• atmospheric conditions (electrical storms, lightning, etc...).
1.3 Maintenance and Services
In this section you will learn how to maintain your measuring instrument with all included accessories to
keep it in good condition a long time and to get good measuring results.
The following list indicates what you absolutely should avoid:
• penetrating water
• strong dirt and dust deposits
• hard impacts
• strong magnetic fields
• high and long lasting heat effect
To clean your device please use a clean and dry soft rag or cloth. To avoid any damage you should
transport the device and accessories always in the appropriate carrying cases.
Prior to using your Black Hawk please be sure that all batteries and accumulators are fully charged. Also
do not allow the batteries to completely discharge before recharging them This way your batteries will
have a long and durable life. When the unit is not in use, recharge the batteries every 3 months so that
they retain their performance.
To charge the external batteries use only the approved chargers which are part of our scope of
delivery.
1.4 Danger of Explosion during Excavation
Unfortunately, the last two world wars also made the ground in many places of the world a potentially
explosive scrap heap. A host of those lethal relics are still buried in the ground. Do not start digging and
hacking for an object wildly when you receive a signal of a piece of metal from your device. Firstly, you
might indeed cause irreparable damage to a truly rare find, and secondly, there is a chance that the
object reacts in an insulted way and strikes back.
Note the color of the ground close to the surface. A red or reddish color of the ground is an indicator of
rust traces. As regards to the finds themselves, you should definitely pay attention to their shape.
Curved or round objects should be a sign of alarm, especially if buttons, rings or little pegs can be
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