Difference between revisions of "TKIE - Using the loudspeaker as microphone"
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(→ICX/AlphaCom configuration) |
(→ICX/AlphaCom configuration) |
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{{note|Use a 100pF capacitor in series with the plus-wire to remove the microphone bias}} | {{note|Use a 100pF capacitor in series with the plus-wire to remove the microphone bias}} | ||
− | == | + | == 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. | 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. | ||
+ | === ICX/AlphaCom configuration === | ||
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: | ||
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* Audio Program is playing | * Audio Program is playing | ||
* Alarm Message is received | * Alarm Message is received | ||
+ | |||
+ | === Edge configuration === |
Revision as of 11:07, 13 November 2019
This article describes how the loudspeaker connected to a TKIE-2 kit also can be used as a microphone.
Wiring diagram
Minimum loudspeaker impedance is 8 ohms.
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.
ICX/AlphaCom configuration
To operate the relays, an event must be created with the TKIE-2 kit as the Event Owner:
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