Connecting the products
SpeechLine
IS microphone series
| 29
B) Connecting microphones to a DSP with logic function
To establish a logic connection in addition to the audio connection:
왘
Use a 3-wire cable (Ø 0.14–0.5 mm
2
) to connect the microphone or the
table stand to a GPIO port or logic port of the DSP.
왘
Lay all cables in such a way that other persons cannot trip over them
and injure themselves.
왘
Observe the connection instructions in the instruction manual of your
DSP.
왘
Set the slide switch for setting the behavior of the microphone button
to
ON
in order to activate the “DSP remote mode”.
In “DSP remote mode”, the microphone is permanently on and is muted
or activated via the DSP. The microphone thus permanently provides a
reference signal for AEC algorithms in the DSP.
DSP
logic
Logic in
Ground
Logic out
MAT 133-S
MAT 153-S
MEB 114-S
ON PTM PTT ON
OFF
MAT 133-S
MAT 153-S
MEB 114-S
