Procom DVS-21 - Operation Mode Safe Receiving (Inverted); Operation Mode Acknowledgment

User Guide
DVS-21
02/2018 • V.1.0 • L. Wolle
49/131
© 2017 ProCom
®
Professional Communication & Service GmbH • Technical changes reserved.
Operation mode Safe receiving (inverted)
such as operating mode Safe receiving
Switching state of the relay is opposed to the state of the acquiring optocoupler!
Operation mode Acknowledgment
Generation of a voice acknowledgment in the event of a successful public address!
To detect the AF signals, Optocoupler 2 is connected to the 100V loudspeaker line. If the AF level is
sufficient, a positive acknowledgment is provided by transmitting Line 2 and rapid flashing of LED I/.
The state is reset by ending the public address.
The module detects a public address by the relay closing with Line 3 and generates the voice
acknowledgment if the level is sufficient. To switch the relay, e.g. for impedance measurement, without a
voice acknowledgment being generated, Line 8 must be used.
Note Line 3 and Line 8 are OR linked.
Line function:
Port 1 - 4:
Line 2
M -> CPU
Acknowledgment, voltage detected at Optocoupler 2 (100V loudspeaker signal)
Line 3
CPU -> M
Relay (e.g. Loudspeaker line LL toggling)
Line 8
CPU -> M
Relay (without acknowledgment)
Optocoupler 1 should NOT be used for other applications, as a reference to the voltage of the
loudspeaker line (LL) would be required!
Display and control elements:
LEDs
I/
GREEN - ON
Input voltage detected at Optocoupler 2
O
GREEN - ON
Output relays closed
Al
GREEN - FLASHING (fast)
Acknowledgment, 100V loudspeaker signal detected