arva 3 axes Gebrauchsanweisung Seite 11

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advanced (analogue) mode
Diagrams E1 and E2.
When the ARVA is switched to advanced mode, its sensitivity is maximum (level 9). However, the Advanced symbol flashes if
the sensitivity level is to be reduced. Decrease the sensitivity with the - button until the symbol stops flashing. When the
symbol stops flashing, you can use the numbers, which give an estimation of the distance that still needs to be covered.
n Initial search
Moving forward, turn the device in every direction until the first audible signal is heard. If the signal is weak, continue to move in the
same direction without changing the position of the device until the sound is clearer and sufficiently distinct to be of help. The initial
search is over when a clear signal is obtained.
n Secondary search (cross or directional search) There are two possibilities:
• Cross technique Diagram E1:
As you move forward, keep the ARVA in the same position. It must be moved parallel to itself. When the first signal is obtained,
keep moving in a straight line. The beep becomes louder and the distance indicator decreases. Once the maximum signal has been
reached and starts to diminish, return to the approximate point where it was strongest. Reduce the sensitivity to minimum in order
to detect the point where the beep will be loudest, and start moving in a line perpendicular to the previous direction. You will soon
realise if you are moving in the right direction, as the signal will quickly become louder, or in the wrong direction, in which case it
will diminish. Once again, find the point where the beep is loudest, as previously. Continue until the sensitivity is positioned on one
of the two last levels (minimum sensitivity, and therefore minimum search distance).
• Directional method Diagram E2:
To determine the direction to follow, sweep the ARVA from left to right over 180°, holding it horizontally. The stronger the signal, the
louder the beep will be (and the lower the distance indicator). The right direction is the one in which the beep is the loudest. If the
beep gets louder as you move forward, you are going in the right direction. If it gets weaker, you are going in the wrong direction.
Turn round, walk back a few metres and check again to find the right direction. As you advance, turn down the sound level with the
- button (so that it is easier to determine where the ARVA is emitting the loudest beep). When the sensitivity is down to 2 or 1, the
secondary search is finished.
n Final search
You are very close to the victim when the sensitivity is down to 2 or 1 (the actual level depends on the depth at which the victim is
buried). The cross technique should then be used (see opposite). Remember that in this case the distance indication is replaced by
the intensity and frequency of the beeps. The closer you get to the buried victim, the louder and faster the beeps are emitted. When
the distance between the transmitter and receiver is very small, a single continuous beep is emitted.
FCC requirements:
- FCC ID: O9BARVAADV3
NOTE: This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to part 15 of the FCC Rules. These limits are desi-
gned to provide reasonable protection against harmful interference in a residential
installation. This equipment generates uses and can radiate radio frequency energy
and, if not installed and used in accordance with the instruction, may cause harmful
interference to radio communications. However, there is no guarantee that interfe-
rence will not occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception which can be determined by turning the
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equipment off and on, the user is encouraged to try to correct interference by one or
more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on circuit different from that to which the
receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
- Information to user:
Changes or modifications not expressly approved by the party responsible for
compliance could voidthe user's authority to operate the equipment.
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