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Difference between revisions of "TKIE - Using the loudspeaker as microphone"

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(Wiring diagram)
(ICX/AlphaCom configuration)
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== ICX/AlphaCom configuration ==
 
== ICX/AlphaCom configuration ==
The relays of the TKIE switches the loudspeaker. In idle the loudspeaker is connected to the mic input. When the relay is activated the loudspeaker is connected to the amplifier output.
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The relays of the TKIE switches the loudspeaker. In idle the loudspeaker is connected to the mic input. When the relays are activated the loudspeaker is connected to the amplifier output.
  
 
To operate the relays, an event must be created with the TKIE-2 kit as the Event Owner:
 
To operate the relays, an event must be created with the TKIE-2 kit as the Event Owner:

Revision as of 09:46, 13 November 2019

AEIPS.png

This article describes how the loudspeaker connected to a TKIE-2 kit also can be used as a microphone.

Wiring diagram

Wiring diagram - The two relays are used to switch between mic input and amplifier output


Minimum loudspeaker impedance is 8 ohms.

Note icon Use a 100pF capacitor in series with the plus-wire to remove the microphone bias


ICX/AlphaCom configuration

The relays of the TKIE switches the loudspeaker. In idle the loudspeaker is connected to the mic input. When the relays are activated the loudspeaker is connected to the amplifier output.

To operate the relays, an event must be created with the TKIE-2 kit as the Event Owner:

The Audio event is used to switch the relays


In the example above the relays are controlled by the SET_IPRCO command. One can alternatively use the RCO command.

When the "Sub-event" = 62, this event will operate the relays when:

  • M-key is pressed during a direct call
  • Group call is received
  • Audio Program is playing
  • Alarm Message is received