Owner's manual

Model 5104B Installation Manual 151053-L8
3-2
3.3 Wiring Specifications
Induced noise (transfer of electrical energy from one wire to another) can interfere with telephone
communication or even cause false alarms. To avoid induced noise, follow these guidelines:
• Isolate input wiring from high current output and power wiring. Do not pull one multi-conductor cable for
the entire panel. Instead, separate the wiring as follows:
• Do Not pull wires from different groups through the same conduit. If you must run them together, do so for
as short a distance as possible or use shielded cable. Connect the shield to earth ground at the panel only.
• High frequency noise, such as that produced by the inductive reactance of a speaker or bell, can also be
reduced by running the wire through ferrite shield beads or by wrapping it around a ferrite toroid.
• Route the wiring around the inside perimeter of the cabinet. It should not cross the circuit board where it
could induce noise into the sensitive microelectronics of pick up unwanted RF noise from the high speed
circuits. See Figure 3-1 for an example.
Figure 3-1 Wire Routing Example
High Voltage AC Power
Audio input/output Phone Line Circuits, Terminals 13-20
Notification Circuits Terminals 21-22
Data Communication Circuits Terminals 25-26