DC Blocking Board
Notice!
The X1, X2, and X3 connections on the DC Blocking Board have the same numbering, polarity,
and functionality as the X1, X2, and X3 connections on the Isolator Board.
X1
X2
X3
1
2
3
No. Item
Description
1
(X1) 100 volt loop
connection
–
2-pin removable screw connector (pin designation from left to
right):
–
Loop connection X1+
–
Loop connection X1-
2
(X2) 100 volt loop
connection
–
2-pin removable screw connector (pin designation from left to
right):
–
Loop connection X2+
–
Loop connection X2-
3
(X3) 100 volt
loudspeaker tap-off
connection
–
2-pin removable screw connector (pin designation from left to
right):
–
Tap-off connection to loudspeaker(s) X3+
–
Tap-off connection to loudspeaker(s) X3-
6.3
38
en | Connections indicators and controls
Loudspeakers Line Isolator System
2014.03 | V1.1 |
Installation and Operation Manual
Bosch Security Systems B.V.
