3. Powering Methods
3.1 Power from CATV System
CATV RF +
60-90 VAC
Power-Passing Tap
SMC8511
Surge
Protector
SMC8511
Figure 3-1 Power from CATV System
When the SMC8511 is to be CATV line powered the tap must be power passing and the
attenuator value chosen to present the system standard levels to the internal cable modem. A
surge protector (furnished) provides protection from system power events. The laptop computer
utilized for configuration plugs into the Ethernet port.
3.2 Power from PoE Inserter
Ethernet
Port
Surge
Protector
Non Power-Passing Tap
CATV RF
Ethernet
Port
24 VDC
1 amp
PoE
Injector
Figure 3-2 Power from PoE Inserter
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