ST50 - Loop Transmitter

Inductive transmission enables hearing aid users with additional induction coils to receive audio signals. The loop should be routed in such a way that it encloses the intended usable area. The power requirement depends on the area of the reception field, its nature and the type of loop installation. As a guideline, 0.1W/m² can be assumed, whereby in reinforced concrete buildings the requirement can increase to approx. 0.3-1W/m². The temporary installation of a test loop provides information on this, as well as on possible interference. For large areas, subdivision into sub-areas is useful. When using the ST 50 (G), the impedance of the loop should be between 0.5 and 2 ohms. It corresponds approximately to the DC resistance. When using multi-core cables, the resistance can be adjusted by parallel or series connection of the individual cores. To be able to optimally adjust the loop field, a separate power amplifier is recommended.
ST 50: Incl. two brackets for mounting in a housing.
ST 50 G: Built into a plastic housing, incl. multi-pole terminal strips.
 

Technical data sheet: Download (DE), Download (EN)

Operating instructions: Download (DE/EN)