LDA A-1 S02 User Manual - page 6
LDA A-1 S02 USER'S MANUAL
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FUNCTIONING DESCRIPTION:
The microphone A-1 functions as an “all-call” , press to talk, single button
microphone. It features light indicators to signal the state of the line/zone where
the page will be broadcasted.
Functioning modes:
Depending on the mode that has been selected internally, the
microphone could perform different behaviors.
•
PTT/LATCH Mode: Throughout the microphone selector, the behavior
will be different. When its position is OFF, the microphone will work in
PUSH TO TALK (PTT) mode, that is, the button should be pressed in
order to make a page. In the position ON, with the first push of the button
the microphone will be fixed on the “floor granted” to the user, and it will
cease emitting once pushed again.
•
0V/5V Mode: Using the operation selector, it is possible to configure the
TTL output line signal, to indicate the use of the audio line in the system.
0V is low level signal and 5V is high level signal.
•
Chime ON/OFF: This position indicates if the chime tone is ON or OFF.
•
TTL/RS-485 Mode: As a default, the functioning mode is TTL. Optionally,
the A-1 can use the RS-485 protocol to communicate with LDA
compatible units. In that case, this option should be active and the
“jumpers” situated in the correct position. This option will always be
activated by the technical team because a wrong configuration could
severely damage the A-1.
•
BUSY=LED Mode: This selector configures the operating mode against a
busy line signal. On the one hand, if it is in the OFF position, the
microphone will not send audio or operation signals while the “BUSY
LINE” signal is active. On the other hand, in the ON position, the
microphone will only operate over the corresponding light indicator,
sending signals of petition and audio. This mode requires normally a
microphone signal process.
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LDA Audio Tech – 31st Severo Ochoa St.- 29590 MÁLAGA, SPAIN.Tel: +34 952028805.
www.lda-audiotech.com