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Instruction manual
- 10 -
ILA-1000
™
In order to also provide users of hearing aids with a perfect sound signal, so-called induction loops are laid. In
this case, the signal is transmitted by inductive means of a laid-in-space loop in a receiver coil located in the
hearing aid.
The induction loop must be laid in such a way that it encloses the intended area of use. The impedance of the
loop is approximately equal to the direct current resistance.
When laying the loop in concrete, PVC protective pipe should be used,
UNDER NO CIRCUMSTANCES STEEL
TUBE
. In the case of difficult structural conditions, a test loop must first be designed and the supply checked.
NOTE:
Directly above the loop wires the reception is worst, because the field lines run horizontally there.
CONSTRUCTION SIMPLE LOOP SYSTEM „Single Array System“
A simple induction loop system consists of a LOOP amplifier ILA-1000 and one or more equal size induction
loops, see drawing.
Figure 1.1 shows single loop
Figure 1.2 shows double loop
Wire cross-section
Min. cable length
Max. cable length
0.5 mm
2
15 meters
90 meters
1.0 mm
2
30 meters
130 meters
1.5 mm
2
42 meters
160 meters
2.5 mm
2
71 meters
180 meters
4.0 mm
2
115 meters
190 meters
TECHNICAL APPENDIX
ILA
-1000 L
OOP- AMP
ILA
-1000 L
OOP- AMP