Wegener Communications 4422 Manuale Utente
Page 25
Page 25 of 72
UTY4422-002
Figure 2. Ferrite Bead Installation
* * * CAUTION * * *
To meet FCC requirements, the alarm and contact closures must have a
ferrite bead installed on each pair of wires leading from them. See
Section 2.5.2 (Page 23) and Figure 2 (Page 25) for instructions on their
installation. There are 3 ferrite beads packed with the unit. One of
these is for the alarm relay output, and two are for the contact closures.
+
ALARM
2
CLOSURE
L
G
N
N
B
D
-
- +
+
1
250mA
MAX
-