6-1
CHAPTER 6
Cable Suppression Cores
The Suppression Cores are used to reduce Radiated Emissions generated by I/O and
power connections and to protect against electrical fast transient events such as ESD
and Spikes. The use of the Suppression Cores is required for all I/O wires (per module)
and all radio communication cables to comply with 89 / 336 EEC and FCC Part 15
Directives.
Assembly Instructions:
1. Twist all Input and Output wires together (per module) for easy insertion into one
ferrite as shown in Figure 6-1.
2. Clamp one ferrite on all Input and Output wires (per module) as shown in Figure
6-1.
3. Each ferrite is to be placed as close as possible to the mating connector plug. The
ferrite should not exceed a distance of 10.0 cm from the module itself.
4. Clamp a ferrite on the CPU Port 2 communication cable as close to the radio as
possible as shown in and Figure 6-2.
5. Clamp a ferrite on the CPU Port 3 communication cable as close to the CPU Port 3
connector as possible as shown in Figure 6-1.
Figure 6-1 I/O and CPU Port 3 Cable Suppression Cores – User Connections
Ferrite Units
1 2
3
5
6
4
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