Bitron Video AV1407/010, Instruction Manual

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6 DS90330-004B DS90330-004B 7
4+N SYSTEMS
For 4+n (5 wires) systems, put all the jumpers JP1÷JP5 in position “5”, as shown in the photo (standard
confi guration):
MIK
SPK
In case of traditional speech signal, set the trimmers MIK and SPK as shown in the photo.
In case of electronic speech signal, rotate all the trimmer SPK clockwise.
1+N SYSTEMS
Leave the jumper JPC in “+” position.
For 1+n (2 wires) systems, put all the jumpers JP1÷JP5 in position “2”, as shown in the photo:
MIK
SPK
Rotate all the trimmer SPK clockwise.
Rotate the trimmer MIK at about central stroke position.
CALL BY BUZZER
Put the jumper JPA in position “R”.
JPA
•
ELECTRONIC CALL BY HANDSET LOUDSPEAKER
Put the jumper JPA in position “E”.
JPA
CONNECTIONS
4+N SYSTEMS
call
incoming speech signal (loudspeaker)
outgoing speech signal (microphone)
system ground
door opener
1+N SYSTEMS
system ground
speech signal / call tone
•