User manual

11
Micro Receiver DT20
Micro Receiver DT20 with both R and R+M modes enabled
The chart below shows the output (what the user can hear) when Micro Re-
ceiver DT20 listening modes R and R+M both are enabled, in combination with
different input types and programs in the HI.
When pressing the push-button on the Micro Receiver DT20, the listening
mode is shifted in the following sequence:
Hearing instrument:
Micro Receiver DT20 push-button
Off R mode R+M mode
DAI input
Off Radio only
Radio +
HI microphone
Programmable DAI
input
DAI + M program
Off
Radio +
HI microphone *
Radio +
HI microphone *
Programmable DAI
input
DAI program only
Off Radio only * Radio only *
* When using this setup in combination with Programmable DAI input (DPAI), the level of the two
modes (R+M and R) can be programmed individually to serve as a volume control.
Note! Difference in volume can occur
When using a hearing aid with Programmable DAI input (DPAI) and having both R
and R+M modes in the Micro Receiver DT20 enabled there can be a difference in
volume between the R and R+M modes even if the Micro Receiver DT20 has been
programmed with identical output levels for the two modes. The reason for this dif-
ference is that the output level in the Micro Receiver DT20 is affected by the input
impedance of the hearing instrument.
The difference in output level can vary between different hearing instruments -
usually the output level will be slightly higher in the R+M mode. An adjustment
might be done with the Programmer DT20 in order to meet the users requirements.