Sennheiser SpeechLine Instruction Manual download pdf (Page 30)

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

) to connect the microphone or the

table stand to a GPIO port or logic port of the DSP.

왘 Lay all cables so that other persons cannot trip over them and injure

them

selves.

왘 Observe the connection inst

ructions 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”.

n “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-SMEB 114-S

ON PTM PTT ON

OFF

MAT 133-S

MAT 153-S

MEB 114-S

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Sennheiser SpeechLine Instruction Manual Page 30