Проверка сквозного тракта системы: катушки связи с имплантом D-Coil и индукционной катушки приема внешнего сигнала T-Coil (с использованием совместимого звукового процессора)
http://s3.medel.com/pdf/US/fl-br/21636_40_OPUS2 Quick Guide ...
Integrated telecoil: The telecoil is located in the OPUS 2
control unit and requires no additional parts or cables. Select
telecoil settings using the FineTuner remote control to reduce
background noise with hearing aid compatible telephones and
induction loop systems.
M: Microphone T: Telecoil Only
MT: Microphone and Telecoil Together
http://s3.medel.com/pdf/US/fl-br/24307r1 RONDO QuickGuide.pd...
A telecoil is a special circuit inside the audio processor
designed to pick up electromagnetic signals. These signals –
or induction signals – are wirelessly transmitted to the
audio processor by using a neckloop or induction
loop system.
A neckloop is a wire worn comfortably
around the neck that transmits signals
to the processor.
Simply plug the telecoil accessory
(neckloop) into the audio device or ALD receiver and select
“T” or “MT” on the FineTuner. Adjust volume as needed.
For Induction Loop Systems, simply position yourself within
the listening area and select “T” or “MT” on the FineTuner.
Adjust volume as needed.
http://www.medel.com/blog/whats-the-dl-coil/
L Coil Comparison

Here’s a full comparison between the three most recent MED-EL cable coils:
P Coil D Coil DL-Coil
Audio Processor Compatibility OPUS 1, OPUS 2 OPUS 1, OPUS 2, SONNET SONNET
http://s3.medel.com/downloadmanager/downloads/maestro/en-GB/...