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Model CFA-24 Transparent Cable Farm Automation Switch Reference Manual Page 49 of 78
8.3.3 Cable Shield Continuity
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Refer to the Segment Punch Down Block Connection Diagram ( see section 4.3 earlier in this text).
The CFA-24 includes Shield Continuity Connectors marked A-F located at the left side of the punch down blocks. The
A through F connection screws are isolated from each other and from signal and earth grounds. They provide a means
to “bond” the shield of a segment output end to the next segment input end. This provides for a continuous shield
connection from the CO to the CPE.
The CO cable shield is connected to Shield Continuity Connector “A” screw using a #10 ring lug. The SEG 1 input end
cable shield is also connected to the “A” screw which allows the SEG 1 cable shield to be connected to the CO shield.
In a similar manner, each output cable end and input cable end shield is connected to the same Shield Continuity
Connector as shown below. The Shield Continuity Connector screws are 10-32 size and the shield lugs are placed
between the stainless steel washer and screw-head to prevent damage to the pc board.
When less than five (5) segments are used the Shield Continuity Connectors must have jumpers connected to the Shield
Continuity Connector screws in order to maintain shield continuity to the CPE, as shown below.
Shield 1
Shield 2
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S
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